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Galdos MV, Soares JR, Lourenço KS, Harris P, Zeri M, Cunha-Zeri G, Vargas VP, Degaspari IAM, Cantarella H. Multi-experiment assessment of soil nitrous oxide emissions in sugarcane. NUTRIENT CYCLING IN AGROECOSYSTEMS 2023; 127:375-392. [PMID: 38025204 PMCID: PMC10657304 DOI: 10.1007/s10705-023-10321-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023]
Abstract
Soil nitrous oxide (N2O) fluxes comprise a significant part of the greenhouse gas emissions of agricultural products but are spatially and temporally variable, due to complex interactions between climate, soil and management variables. This study aimed to identify the main factors that affect N2O emissions under sugarcane, using a multi-site database from field experiments. Greenhouse gas fluxes, soil, climate, and management data were obtained from 13 field trials spanning the 2011-2017 period. We conducted exploratory, descriptive and inferential data analyses in experiments with varying fertiliser and stillage (vinasse) type and rate, and crop residue rates. The most relevant period of high N2O fluxes was the first 46 days after fertiliser application. The results indicate a strong positive correlation of cumulative N2O with nitrogen (N) fertiliser rate, soil fungi community (18S rRNA gene), soil ammonium (NH4+) and nitrate (NO3-); and a moderate negative correlation with amoA genes of ammonia-oxidising archaea (AOA) and soil organic matter content. The regression analysis revealed that easily routinely measured climate and management-related variables explained over 50% of the variation in cumulative N2O emissions, and that additional soil chemical and physical parameters improved the regression fit with an R2 = 0.65. Cross-wavelet analysis indicated significant correlations of N2O fluxes with rainfall and air temperature up to 64 days, associated with temporal lags of 2 to 4 days in some experiments, and presenting a good environmental control over fluxes in general. The nitrogen fertiliser mean emission factors ranged from 0.03 to 1.17% of N applied, with urea and ammonium nitrate plus vinasse producing high emissions, while ammonium sulphate, ammonium nitrate without vinasse, calcium nitrate, and mitigation alternatives (nitrification inhibitors and timing of vinasse application) producing low N2O-EFs. Measurements from multiple sites spanning several cropping seasons were useful for exploring the influence of environmental and management-related variables on soil N2O emissions in sugarcane production, providing support for global warming mitigation strategies, nitrogen management policies, and increased agricultural input efficiency. Supplementary Information The online version contains supplementary material available at 10.1007/s10705-023-10321-w.
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Affiliation(s)
- M. V. Galdos
- Rothamsted Research, Sustainable Soils and Crops, Harpenden, AL5 2JQ UK
| | - J. R. Soares
- School of Agricultural Engineering (FEAGRI), University of Campinas (UNICAMP), Av. Cândido Rondon, 501, Campinas, SP 13083-875 Brazil
| | - K. S. Lourenço
- Soils and Environmental Resources Centre, Agronomic Institute of Campinas (IAC), Av. Barao de Itapura 1481, Campinas, SP 13020-902 Brazil
| | - P. Harris
- Rothamsted Research, Net Zero and Resilient Farming, North Wyke, Okehampton, Devon, EX20 2SB UK
| | - M. Zeri
- National Center for Monitoring and Early Warning of Natural Disasters (Cemaden), São José dos Campos, Brazil
| | - G. Cunha-Zeri
- National Institute for Space Research (INPE), São José dos Campos, Brazil
| | - V. P. Vargas
- Soils and Environmental Resources Centre, Agronomic Institute of Campinas (IAC), Av. Barao de Itapura 1481, Campinas, SP 13020-902 Brazil
| | - I. A. M. Degaspari
- Soils and Environmental Resources Centre, Agronomic Institute of Campinas (IAC), Av. Barao de Itapura 1481, Campinas, SP 13020-902 Brazil
| | - H. Cantarella
- Soils and Environmental Resources Centre, Agronomic Institute of Campinas (IAC), Av. Barao de Itapura 1481, Campinas, SP 13020-902 Brazil
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Oliveira BG, Lourenço KS, Carvalho JLN, Gonzaga LC, Teixeira MC, Tamara AF, Soares JR, Cantarella H. New trends in sugarcane fertilization: Implications for NH 3 volatilization, N 2O emissions and crop yields. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 342:118233. [PMID: 37276616 DOI: 10.1016/j.jenvman.2023.118233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 05/05/2023] [Accepted: 05/20/2023] [Indexed: 06/07/2023]
Abstract
Recycling nutrients helps to reduce the environmental impact of agriculture and contributes to alleviating the effects of global climate change. A recent trend in sugarcane cultivation is the application of concentrated vinasse (CV) combined with fertilizers into an organo-mineral formulation to improve logistics, reduce costs and foster the circular economy. However, the implications of the application of such organo-mineral formulation in sugarcane fields are unclear. In this study, we evaluated the effects of the organo-mineral formulation containing granular urea (UR), and a nitrification inhibitor (NI) on crop yields, NH3 volatilization, and N2O emissions. Field experiments were conducted during two fertilization seasons, dry and wet, and the treatments were: control; UR; UR + NI; CV; CV + UR; and CV + UR + NI. CV was applied at 7 m3 ha-1. The treatments (except control and CV) were balanced to receive the same amount of N and K. Compared with UR, the organo-mineral formulation of CV + UR decreased NH3 volatilization losses from 7% to 4% in the dry season and from 3.5% to 0.5% in the wet season. Conversely, compared with UR, N2O emissions increased significantly (p ≤ 0.05) in CV + UR in the wet season from 1% to 2% of applied N. In the dry season, no differences were observed. The addition of NI was effective in mitigating N2O emissions in both seasons. Emission reductions ranged from 43 to 48% in the dry season and from 71 to 84%, in the wet season. Fertilization with UR or the organo-mineral formulation influenced sugarcane yield only in the dry season, with the highest yield in CV + UR. NI did not affect crop yield. In general, emission intensities (kg CO2eq Mg-1 of stalk) were highest in CV + UR. We conclude that the organo-mineral formulation reduced NH3 losses and increased N2O emissions compared with regular solid fertilizer and that NI was effective for mitigating N2O emissions.
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Affiliation(s)
- Bruna G Oliveira
- Soils and Environmental Resources Center, Agronomic Institute of Campinas (IAC), Av. Barão de Itapura, 1481. Campinas, SP, 13020-970, Brazil.
| | - Késia S Lourenço
- Soils and Environmental Resources Center, Agronomic Institute of Campinas (IAC), Av. Barão de Itapura, 1481. Campinas, SP, 13020-970, Brazil
| | | | - Leandro C Gonzaga
- Brazilian Biorenewables National Laboratory (LNBR), Campinas, São Paulo, Brazil; Interinstitutional Graduate Program in Bioenergy (USP/UNICAMP/UNESP) - 330 Cora Coralina Street, Cidade Universitária, Campinas/SP, CEP 13083-896, Brazil
| | - Maria Carolina Teixeira
- Soils and Environmental Resources Center, Agronomic Institute of Campinas (IAC), Av. Barão de Itapura, 1481. Campinas, SP, 13020-970, Brazil
| | - Ana Flávia Tamara
- Soils and Environmental Resources Center, Agronomic Institute of Campinas (IAC), Av. Barão de Itapura, 1481. Campinas, SP, 13020-970, Brazil
| | - Johnny R Soares
- Soils and Environmental Resources Center, Agronomic Institute of Campinas (IAC), Av. Barão de Itapura, 1481. Campinas, SP, 13020-970, Brazil
| | - Heitor Cantarella
- Soils and Environmental Resources Center, Agronomic Institute of Campinas (IAC), Av. Barão de Itapura, 1481. Campinas, SP, 13020-970, Brazil
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Araldi de Castro R, de Castro SGQ, Quassi de Castro SA, Piassa A, Pedrosa SG, Tropaldi L. Selectivity and control of Euphorbia heterophylla in sugarcane by herbicide in post-emergence. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2023:1-8. [PMID: 37452474 DOI: 10.1080/03601234.2023.2235248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
To obtain good control of wild poinsettia (Euphorbia heterophylla) in post-emergence in sugarcane crop, we evaluate the herbicides association on post-emergence of E. heterophylla and the ratoon cane selectivity. The experimental scheme was in randomized blocks with 6 treatments and 4 replications. The treatments were: control; ametryn + mesotrione + sulfentrazone (1,500 + 144 + 800 g i.a ha-1); ametryn + mesotrione + diclosulan (1,500 + 144 + 200 g i.a ha-1); ametryn + mesotrione (2,500 + 144 g i.a ha-1: Highest dose); ametryn + mesotrione (2,000 + 144 g i.a ha-1: Lowest dose) and ametryn + mesotrione + diuron (1,000 + 144 + 1,250 g i.a ha-1). The percentage of control, dry mass, height and percentage of germination of E. heterophylla and injury level, yield and technological quality of sugarcane were evaluated. The best control of E. heterophylla was: ametryn + mesotrione +sulfentrazone; ametryn + mesotrione + diclosulan and ametryn + mesotrione (Lowest dose). As for the ratoon cane selectivity the best yield was achieved with the association ametryn + mesotrione +diclosulan. An appropriate association of herbicide molecules provides successful control of E. heterophylla, especially the association of sulfentrazone or diclosulan together with ametryn and mesotrione.
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Affiliation(s)
| | | | - Saulo Augusto Quassi de Castro
- Department of Soil Science, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Alexandre Piassa
- Coopercitrus Cooperativa dos Produtores Rurais, Guaíra, São Paulo, Brazil
| | - Sandro Gonçalves Pedrosa
- Norplan - Associação dos fornecedores de cana do noroeste paulista, Penápolis, São Paulo, Brazil
| | - Leandro Tropaldi
- Department of Plant Production, College of Agrarian Sciences and Technology, São Paulo State University (UNESP), Dracena, São Paulo, Brazil
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de Castro SGQ, Coelho AP, de Castro SAQ, de Souza Chiachia TR, de Castro RA, Lemos LB. Fertilizer source and application method influence sugarcane production and nutritional status. FRONTIERS IN PLANT SCIENCE 2023; 14:1099589. [PMID: 36968372 PMCID: PMC10032168 DOI: 10.3389/fpls.2023.1099589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/23/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION The contrasting weather conditions throughout the sugarcane harvest period in south-central Brazil (April to November) influence fertilization management in sugarcane ratoon. METHODS Through field studies carried out over two cropping seasons, we aimed to compare the performance of sugarcane at sites harvested in the early and late periods of the harvest season as a function of fertilizer sources associated with application methods. The design used in each site was a randomized block in a 2 x 3 factorial scheme; the first factor consisted of fertilizer sources (solid and liquid), and the second factor consisted of application methods (above the straw, under the straw, and incorporated into the middle of the sugarcane row). RESULTS The fertilizer source and application method interacted at the site harvested in the early period of the sugarcane harvest season. Overall, the highest sugarcane stalk and sugar yields at this site were obtained with the incorporated application applying liquid fertilizer and under straw applying solid fertilizer, with increments of up to 33%. For the site harvested in the late period of the sugarcane harvest season, the liquid fertilizer promoted a 25% higher sugarcane stalk yield compared to the solid fertilizer in the crop season with low rainfall in the spring, while in the crop season with normal rainfall, there were no differences between treatments. DISCUSSION This demonstrates the importance of defining fertilization management in sugarcane as a function of harvest time, thereby promoting greater sustainability in the production system.
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Affiliation(s)
| | - Anderson Prates Coelho
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
| | - Saulo Augusto Quassi de Castro
- Department of Soil Science, “Luiz de Queiroz” College of Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil
| | | | | | - Leandro Borges Lemos
- School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), Jaboticabal, São Paulo, Brazil
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Barbosa Júnior MR, Moreira BRDA, de Oliveira RP, Shiratsuchi LS, da Silva RP. UAV imagery data and machine learning: A driving merger for predictive analysis of qualitative yield in sugarcane. FRONTIERS IN PLANT SCIENCE 2023; 14:1114852. [PMID: 36818852 PMCID: PMC9929953 DOI: 10.3389/fpls.2023.1114852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 01/18/2023] [Indexed: 06/18/2023]
Abstract
Predicting sugarcane yield by quality allows stakeholders from research centers to industries to decide on the precise time and place to harvest a product on the field; hence, it can streamline workflow while leveling up the cost-effectiveness of full-scale production. °Brix and Purity can offer significant and reliable indicators of high-quality raw material for industrial processing for food and fuel. However, their analysis in a relevant laboratory can be costly, time-consuming, and not scalable. We, therefore, analyzed whether merging multispectral images and machine learning (ML) algorithms can develop a non-invasive, predictive framework to map canopy reflectance to °Brix and Purity. We acquired multispectral images data of a sugarcane-producing area via unmanned aerial vehicle (UAV) while determining °Brix and analytical Purity from juice in a routine laboratory. We then tested a suite of ML algorithms, namely multiple linear regression (MLR), random forest (RF), decision tree (DT), and support vector machine (SVM) for adequacy and complexity in predicting °Brix and Purity upon single spectral bands, vegetation indices (VIs), and growing degree days (GDD). We obtained evidence for biophysical functions accurately predicting °Brix and Purity. Those can bring at least 80% of adequacy to the modeling. Therefore, our study represents progress in assessing and monitoring sugarcane on an industrial scale. Our insights can offer stakeholders possibilities to develop prescriptive harvesting and resource-effective, high-performance manufacturing lines for by-products.
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Affiliation(s)
- Marcelo Rodrigues Barbosa Júnior
- Department of Engineering and Mathematical Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), São Paulo, Brazil
- AgCenter, School of Plant, Environmental and Soil Sciences, Louisiana State University, Baton Rouge, LA, United States
| | - Bruno Rafael de Almeida Moreira
- Department of Engineering and Mathematical Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), São Paulo, Brazil
| | - Romário Porto de Oliveira
- Department of Engineering and Mathematical Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), São Paulo, Brazil
| | - Luciano Shozo Shiratsuchi
- AgCenter, School of Plant, Environmental and Soil Sciences, Louisiana State University, Baton Rouge, LA, United States
| | - Rouverson Pereira da Silva
- Department of Engineering and Mathematical Sciences, School of Agricultural and Veterinarian Sciences, São Paulo State University (Unesp), São Paulo, Brazil
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Luo T, Li CN, Yan R, Huang K, Li YR, Liu XY, Lakshmanan P. Physiological and molecular insights into the resilience of biological nitrogen fixation to applied nitrogen in Saccharum spontaneum, wild progenitor of sugarcane. FRONTIERS IN PLANT SCIENCE 2023; 13:1099701. [PMID: 36714748 PMCID: PMC9881415 DOI: 10.3389/fpls.2022.1099701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 12/20/2022] [Indexed: 06/18/2023]
Abstract
Excessive use of nitrogen (N) fertilizer for sugarcane cultivation is a significant cause of greenhouse gas emission. N use-efficiency (NUE) of sugarcane is relatively low, and considerable effort is now directed to exploit biological nitrogen fixation (BNF) in sugarcane. We hypothesize that genetic base-broadening of sugarcane using high-BNF Saccharum spontaneum, a wild progenitor of sugarcane, will help develop N-efficient varieties. We found remarkable genetic variation for BNF and growth in S. spontaneum accessions, and BNF in some accessions remained highly resilient to inorganic N application. Physiological and molecular analyses of two S. spontaneum accessions with high-BNF capacity and growth, namely G152 and G3, grown under N replete and low N conditions showed considerable similarity for total N, NH4-N, soluble sugar, indoleacetic acid, gibberellic acid, zeatin and abscisic acid content; yet, they were strikingly different at molecular level. Global gene expression analysis of G152 and G3 grown under contrasting N supply showed genotype effect explaining much of the gene expression variation observed. Differential gene expression analysis found an over-representation of carbohydrate and amino acid metabolism and transmembrane transport genes in G152 and an enrichment of lipid metabolism and single-organism processes genes in G3, suggesting that distinctly divergent metabolic strategies are driving N-related processes in these accessions. This was attested by the remarkable variation in carbon, N, amino acid and hormone metabolism-related gene expression in G152 and G3 under high- and low-N supply. We conclude that both accessions may be achieving similar BNF and growth phenotypes through overlapping but distinctly different biochemical and molecular mechanisms.
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Affiliation(s)
- Ting Luo
- Sugarcane Research Institute; Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Chang-Ning Li
- Sugarcane Research Institute; Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Rui Yan
- Sugarcane Research Institute; Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Kejun Huang
- Sugarcane Research Institute; Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Yang-Rui Li
- Sugarcane Research Institute; Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Xiao-Yan Liu
- Sugarcane Research Institute; Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Prakash Lakshmanan
- Sugarcane Research Institute; Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Guangxi Academy of Agricultural Sciences, Nanning, China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing, China
- Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia, QLD, Australia
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Wang C, Qi Z, Zhao J, Gao Z, Zhao J, Chen F, Chu Q. Sustainable water and nitrogen optimization to adapt to different temperature variations and rainfall patterns for a trade-off between winter wheat yield and N 2O emissions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 854:158822. [PMID: 36116657 DOI: 10.1016/j.scitotenv.2022.158822] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 09/12/2022] [Accepted: 09/13/2022] [Indexed: 06/15/2023]
Abstract
Optimizing irrigation and nitrogen (N) fertilizer applications is essential to ensure crop yields and lower environmental risks under climate change. The DeNitrification-DeComposition (DNDC) model was employed to investigate the impacts of irrigation regime (RF, rainfed; MI, minimum irrigation; CI, critical irrigation; FI, full irrigation) and N fertilizer rate (N60, N90, N120, N150, N180, N210, N240, N270, and N300 kg ha-1) on yield and nitrous oxide (N2O) emissions from winter wheat growing season under different temperature rise levels (+0, +0.5, +1.0, +1.5, and +2.0 °C scenarios) and precipitation year types (wet, normal, and dry seasons) in the North China Plain. Model evaluations demonstrated that simulated soil temperature, soil moisture, daily N2O flux, yield, and cumulative N2O emissions were generally in close agreement with measurements from field experiment over three growing seasons. By adopting simulation scenarios analysis, the model was then used to explore the effects of irrigation and N fertilizer inputs to balance yield and N2O emissions from winter wheat growing season. Based on reduced water and fertilizer inputs and N2O emissions with little yield penalty, recommended management practices included application of MI-N150 in wet season, CI-N120 in both normal and dry seasons, and CI-N150 for +0 to +2.0 °C scenarios. Recommended practices in different precipitation year types reduced irrigation amount by 75-150 mm, N rate by 75-105 kg N ha-1, yield by 0.16-0.86 t ha-1, cumulative N2O emissions by 0.13-0.64 kg ha-1, and yield-scaled N2O emissions by 15.5-85.0 mg kg-1 compared with current practices. The corresponding metrics for different elevated temperature levels decreased by 75 mm, 75 kg N ha-1, 0.09-0.50 t ha-1, 0.12-0.52 kg ha-1, and 13.7-72.3 mg kg-1, respectively. The proposed management practices can help to maintain high agronomic productivity and alleviate environmental pollution from agricultural ecosystems, thereby providing an important basis for mitigation strategies to adapt to climate change.
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Affiliation(s)
- Chong Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; Key Laboratory of Farming System, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Zhiming Qi
- Department of Bioresource Engineering, McGill University, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Jiongchao Zhao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; Key Laboratory of Farming System, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Zhenzhen Gao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; Key Laboratory of Farming System, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Jie Zhao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Fu Chen
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; Key Laboratory of Farming System, Ministry of Agriculture and Rural Affairs, Beijing 100193, China
| | - Qingquan Chu
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; Key Laboratory of Farming System, Ministry of Agriculture and Rural Affairs, Beijing 100193, China.
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Nong Q, Malviya MK, Solanki MK, Solanki AC, Lin L, Xie J, Mo Z, Wang Z, Song XP, Huang X, Rai S, Li C, Li YR. Sugarcane Root Transcriptome Analysis Revealed the Role of Plant Hormones in the Colonization of an Endophytic Diazotroph. Front Microbiol 2022; 13:924283. [PMID: 35814670 PMCID: PMC9263702 DOI: 10.3389/fmicb.2022.924283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/30/2022] [Indexed: 11/21/2022] Open
Abstract
Some sugarcane germplasms can absorb higher amounts of nitrogen via atmospheric nitrogen fixation through the bacterial diazotrophs. Most endophytic diazotrophs usually penetrate through the root, colonize inside the plant, and fix the nitrogen. To assess the plant’s bacterial association during root colonization, strain GXS16 was tagged with a plasmid-bear green fluorescent protein (GFP) gene. The results demonstrated that the strain can colonize roots all the way to the maturation zone. The strain GXS16 showed maximum nitrogenase enzyme activity at pH 8 and 30°C, and nitrogenase activity is less affected by different carbon sources. Further, strain GXS16 colonization response was investigated through plant hormones analysis and RNAseq. The results showed that the bacterial colonization gradually increased with time, and the H2O2 and malondialdehyde (MDA) content significantly increased at 1 day after inoculation. There were no substantial changes noticed in proline content, and the ethylene content was detected initially, but it decreased with time. The abscisic acid (ABA) content showed significant increases of 91.9, 43.9, and 18.7%, but conversely, the gibberellin (GA3) content decreased by 12.9, 28.5, and 45.2% at 1, 3, and 5 days after inoculation, respectively. The GXS16 inoculation significantly increased the activities of catalase (CAT), superoxide dismutase (SOD), polyphenol oxidase (PPO), ascorbate peroxidase (APX), and glutathione reductase (GR) at different timepoint. In contrast, the peroxisome (POD) activity had no changes detected during the treatment. In the case of RNAseq analysis, 2437, 6678, and 4568 differentially expressed genes (DEGs) were identified from 1, 3, and 5 days inoculated root samples, and 601 DEGs were shared in all samples. The number or the expression diversity of DEGs related to ethylene was much higher than that of ABA or GA, which indicated the critical role of ethylene in regulating the sugarcane roots response to GXS16 inoculation.
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Affiliation(s)
- Qian Nong
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Plant Protection Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Mukesh Kumar Malviya
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Manoj Kumar Solanki
- Plant Cytogenetics and Molecular Biology Group, Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland
| | | | - Li Lin
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Jinlan Xie
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Zhanghong Mo
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Zeping Wang
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Xiu-Peng Song
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Xin Huang
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Shalini Rai
- Department of Biotechnology, Society of Higher Education and Practical Application (SHEPA), Varanasi, India
| | - Changning Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- *Correspondence: Changning Li,
| | - Yang-Rui Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture and Rural Affairs, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Yang-Rui Li,
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Zhao H, Lakshmanan P, Wang X, Xiong H, Yang L, Liu B, Shi X, Chen X, Wang J, Zhang Y, Zhang F. Global reactive nitrogen loss in orchard systems: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 821:153462. [PMID: 35093357 DOI: 10.1016/j.scitotenv.2022.153462] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 01/09/2022] [Accepted: 01/23/2022] [Indexed: 06/14/2023]
Abstract
Orchards account for about 5% of the agricultural land in the world, however the amount of nitrogen (N) fertilizer input in orchards is relatively large. Little is known about N input and its impact in orchards at the global scale. Therefore, in this study we systematically evaluated reactive nitrogen (Nr) loss in global orchards. A meta-analysis of 97 studies reported from 2000 to 2021 from different countries showed that the mean global N fertilizer input in orchards was 303 kg N ha-1 yr-1, and the estimated emission factor (EF) of nitrous oxide (N2O) and ammonia (NH3) were 1.39% and 3.64%, respectively. Also, during the same period, orchard nitrate leaching factor (LF) reached 18.5%, and the runoff N loss factor (RF) and net fruit N removal factor (NRF) were estimated to be 2.75% and 5.31%, respectively. The apparent N balance of the global orchard system reached 68.4% of N input. N application increased the Nr loss in various pathways in the orchard. The N2O and NH3 emission and nitrate leaching were linearly correlated with N fertilizer application, and overuse of N resulted in substantial Nr loss. Regionally, the total Nr loss in developing countries was higher than developed countries. Average N input (405 kg N ha-1 yr-1) and Nr loss (102 kg N ha-1 yr-1) of orchards in Asia were the highest. The NH3 volatilization and runoff N loss of deciduous orchards were significantly higher than that of evergreen orchards. N application increased fruit yield, but excessive N input reduced the net fruit N removal (FNR). The results reported here fill an important knowledge gap of N balance analysis of orchards at a global scale and provided a framework for optimizing N management to achieve sustainable fruit production.
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Affiliation(s)
- Huanyu Zhao
- College of Resources and Environment, Southwest University, Chongqing 400716, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Prakash Lakshmanan
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China; Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530000, China; Queensland Alliance for Agriculture and Food Innovation, University of Queensland, St Lucia 4067, QLD, Australia
| | - Xiaozhong Wang
- College of Resources and Environment, Southwest University, Chongqing 400716, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China; State Cultivation Base of Eco-agriculture for Southwest Mountainous Land, Southwest University, Chongqing 400716, China; National Monitoring Station of Soil Fertility and Fertilizer Efficiency on Purple Soils, Chongqing 400716, China
| | - Huaye Xiong
- College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Linsheng Yang
- College of Resources and Environment, Southwest University, Chongqing 400716, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Bin Liu
- College of Resources and Environment, Southwest University, Chongqing 400716, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Xiaojun Shi
- College of Resources and Environment, Southwest University, Chongqing 400716, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China; State Cultivation Base of Eco-agriculture for Southwest Mountainous Land, Southwest University, Chongqing 400716, China; National Monitoring Station of Soil Fertility and Fertilizer Efficiency on Purple Soils, Chongqing 400716, China
| | - Xinping Chen
- College of Resources and Environment, Southwest University, Chongqing 400716, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China; State Cultivation Base of Eco-agriculture for Southwest Mountainous Land, Southwest University, Chongqing 400716, China; National Monitoring Station of Soil Fertility and Fertilizer Efficiency on Purple Soils, Chongqing 400716, China
| | - Jie Wang
- College of Resources and Environment, Southwest University, Chongqing 400716, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China; State Cultivation Base of Eco-agriculture for Southwest Mountainous Land, Southwest University, Chongqing 400716, China; National Monitoring Station of Soil Fertility and Fertilizer Efficiency on Purple Soils, Chongqing 400716, China
| | - Yueqiang Zhang
- College of Resources and Environment, Southwest University, Chongqing 400716, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China; State Cultivation Base of Eco-agriculture for Southwest Mountainous Land, Southwest University, Chongqing 400716, China; National Monitoring Station of Soil Fertility and Fertilizer Efficiency on Purple Soils, Chongqing 400716, China.
| | - Fusuo Zhang
- College of Resources and Environment Science, China Agricultural University, Beijing 100196, China; Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing 400716, China.
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Singh RK, Singh P, Guo DJ, Sharma A, Li DP, Li X, Verma KK, Malviya MK, Song XP, Lakshmanan P, Yang LT, Li YR. Root-Derived Endophytic Diazotrophic Bacteria Pantoea cypripedii AF1 and Kosakonia arachidis EF1 Promote Nitrogen Assimilation and Growth in Sugarcane. Front Microbiol 2021; 12:774707. [PMID: 34975800 PMCID: PMC8714890 DOI: 10.3389/fmicb.2021.774707] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 11/12/2021] [Indexed: 11/15/2022] Open
Abstract
Excessive, long-term application of chemical fertilizers in sugarcane crops disrupts soil microbial flora and causes environmental pollution and yield decline. The role of endophytic bacteria in improving crop production is now well-documented. In this study, we have isolated and identified several endophytic bacterial strains from the root tissues of five sugarcane species. Among them, eleven Gram-negative isolates were selected and screened for plant growth-promoting characteristics, i.e., production of siderophores, indole-3-acetic acid (IAA), ammonia, hydrogen cyanide (HCN), and hydrolytic enzymes, phosphorus solubilization, antifungal activity against plant pathogens, nitrogen-fixation, 1-aminocyclopropane-1-carboxylic acid deaminase activity, and improving tolerance to different abiotic stresses. These isolates had nifH (11 isolates), acdS (8 isolates), and HCN (11 isolates) genes involved in N-fixation, stress tolerance, and pathogen biocontrol, respectively. Two isolates Pantoea cypripedii AF1and Kosakonia arachidis EF1 were the most potent strains and they colonized and grew in sugarcane plants. Both strains readily colonized the leading Chinese sugarcane variety GT42 and significantly increased the activity of nitrogen assimilation enzymes (glutamine synthetase, NADH glutamate dehydrogenase, and nitrate reductase), chitinase, and endo-glucanase and the content of phytohormones gibberellic acid, indole-3-acetic acid, and abscisic acid. The gene expression analysis of GT42 inoculated with isolates of P. cypripedii AF1 or K. arachidis EF1 showed increased activity of nifH and nitrogen assimilation genes. Also, the inoculated diazotrophs significantly increased plant nitrogen content, which was corroborated by the 15N isotope dilution analysis. Collectively, these findings suggest that P. cypripedii and K. arachidis are beneficial endophytes that could be used as a biofertilizer to improve plant nitrogen nutrition and growth of sugarcane. To the best of our knowledge, this is the first report of sugarcane growth enhancement and nitrogen fixation by Gram-negative sugarcane root-associated endophytic bacteria P. cypripedii and K. arachidis. These strains have the potential to be utilized as sugarcane biofertilizers, thus reducing nitrogen fertilizer use and improving disease management.
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Affiliation(s)
- Rajesh Kumar Singh
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Pratiksha Singh
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
- School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, China
| | - Dao-Jun Guo
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bio Resources, College of Agriculture, Guangxi University, Nanning, China
| | - Anjney Sharma
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Dong-Ping Li
- Microbiology Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Xiang Li
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Krishan K. Verma
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Mukesh Kumar Malviya
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Xiu-Peng Song
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Prakash Lakshmanan
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
- Interdisciplinary Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing, China
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, Australia
| | - Li-Tao Yang
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bio Resources, College of Agriculture, Guangxi University, Nanning, China
| | - Yang-Rui Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bio Resources, College of Agriculture, Guangxi University, Nanning, China
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11
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Routes of Soil Uses and Conversions with the Main Crops in Brazilian Cerrado: A Scenario from 2000 to 2020. LAND 2021. [DOI: 10.3390/land10111135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The Brazilian Savannah, also known as Cerrado Biome, is a hotspot for Brazilian biodiversity. The hypothesis tested in this study is that there are diverse routes of soil uses for agriculture production in Cerrado, derived mainly from areas with pasture (natural and planted) due to the decrease in Cerrado deforestation in the last 20 years (from 2000 to 2020). The aim of this study was (i) to determine the profile of crop production in Brazilian Cerrado; (ii) to demonstrate the routes of soil uses during the last 20 years; (iii) to demonstrate the increase of soybean and corn production in Cerrado. The design of the study was based on data of (i) the accumulation of biomass and carbon in Cerrado; (ii) production area and yield of corn, soybean, coffee, sugarcane, cotton, and pasture (natural and planted); (iii) Cerrado deforestation. Results showed that the vegetation of Cerrado promotes a higher accumulation of biomass and carbon on the subsurface, followed by accumulation in the surface, deadwood, and litter. In the last 20 years, there has been a reduction of 75% in deforestation and an increase of 66% in crop areas and 78% in crop yield. However, there was no clear reduction in deforestation specifically in the Matopiba region. In Minas Gerais/MG, Goiás/GO, and Mato Grosso/MT, there were higher productions of coffee/MG, soybean/MT, corn/MT, sugarcane/MG-GO, and cotton/MT. Planted pasture (and not natural pasture) covered the larger areas, representing 75% of the total area with pasture. The low routes of soil uses from deforestation to (i) planted pasture and (ii) crop production explained the decrease in deforestation. The increases in yield and crop areas are explained by the routes from pasture (planted and natural) to agriculture. Our results provided clear insights that programs of Cerrado preservation should continue the decrease of deforestation with the sustainable development in agriculture, mainly in the Matopiba region where there was no clear decrease in deforestation in the last 20 years.
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12
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Organic Wastes Amended with Sorbents Reduce N2O Emissions from Sugarcane Cropping. ENVIRONMENTS 2021. [DOI: 10.3390/environments8080078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Nutrient-rich organic wastes and soil ameliorants can benefit crop performance and soil health but can also prevent crop nutrient sufficiency or increase greenhouse gas emissions. We hypothesised that nitrogen (N)-rich agricultural waste (poultry litter) amended with sorbents (bentonite clay or biochar) or compost (high C/N ratio) attenuates the concentration of inorganic nitrogen (N) in soil and reduces emissions of nitrous oxide (N2O). We tested this hypothesis with a field experiment conducted on a commercial sugarcane farm, using in vitro incubations. Treatments received 160 kg N ha−1, either from mineral fertiliser or poultry litter, with additional N (2–60 kg N ha−1) supplied by the sorbents and compost. Crop yield was similar in all N treatments, indicating N sufficiency, with the poultry litter + biochar treatment statistically matching the yield of the no-N control. Confirming our hypothesis, mineral N fertiliser resulted in the highest concentrations of soil inorganic N, followed by poultry litter and the amended poultry formulations. Reflecting the soil inorganic N concentrations, the average N2O emission factors ranked as per the following: mineral fertiliser 8.02% > poultry litter 6.77% > poultry litter + compost 6.75% > poultry litter + bentonite 5.5% > poultry litter + biochar 3.4%. All emission factors exceeded the IPCC Tier 1 default for managed soils (1%) and the Australian Government default for sugarcane soil (1.25%). Our findings reinforce concerns that current default emissions factors underestimate N2O emissions. The laboratory incubations broadly matched the field N2O emissions, indicating that in vitro testing is a cost-effective first step to guide the blending of organic wastes in a way that ensures N sufficiency for crops but minimises N losses. We conclude that suitable sorbent-waste formulations that attenuate N release will advance N efficiency and the circular nutrient economy.
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13
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Wang X, Zhang W, Lakshmanan P, Qian C, Ge X, Hao Y, Wang J, Liu Y, Yang H, Zhang Z, Guo Z, Gong S, Fan T, Zhang J, Dong G, Shen D, Wang Y, Cheng W, Lv J, Wang X, Lu T, Yin C, Yang H, Luo J, Qiao Y, Yao Z, Chen X. Public–private partnership model for intensive maize production in China: A synergistic strategy for food security and ecosystem economic budget. Food Energy Secur 2021. [DOI: 10.1002/fes3.317] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Xingbang Wang
- College of Resources and Environment, and Academy of Agricultural Science Southwest University Chongqing China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin Southwest University Chongqing China
- Center for Resources Environment and Food Security China Agricultural University Beijing China
| | - Wushuai Zhang
- College of Resources and Environment, and Academy of Agricultural Science Southwest University Chongqing China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin Southwest University Chongqing China
| | - Prakash Lakshmanan
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin Southwest University Chongqing China
- Sugarcane Research Institute Guangxi Academy of Agricultural Sciences Nanning China
- Queensland Alliance for Agriculture and Food Innovation University of Queensland St Lucia Qld Australia
| | - Chunrong Qian
- Institute of Crop Tillage and Cultivation Heilongjiang Academy of Agricultural Sciences Harbin China
| | - Xuanliang Ge
- Institute of Crop Tillage and Cultivation Heilongjiang Academy of Agricultural Sciences Harbin China
| | - Yubo Hao
- Institute of Crop Tillage and Cultivation Heilongjiang Academy of Agricultural Sciences Harbin China
| | - Junhe Wang
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences Qiqihar China
| | - Yutao Liu
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences Qiqihar China
| | - Huiying Yang
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences Qiqihar China
| | - Zhongdong Zhang
- Maize Research Institute Shanxi Academy of Agricultural Sciences Xinzhou China
| | - Zhengyu Guo
- Maize Research Institute Shanxi Academy of Agricultural Sciences Xinzhou China
| | - Shuai Gong
- Maize Research Institute Shanxi Academy of Agricultural Sciences Xinzhou China
| | - Tinglu Fan
- Institute of Dry Land Agriculture Gansu Academy of Agricultural Sciences Lanzhou China
| | - Jianjun Zhang
- Institute of Dry Land Agriculture Gansu Academy of Agricultural Sciences Lanzhou China
| | - Guohao Dong
- Maize Research Institute Dezhou Academy of Agricultural Sciences Dezhou China
| | - Dongfeng Shen
- Maize Research Institute Luoyang Academy of Agriculture and Forestry Sciences Luoyang China
| | - Yuhong Wang
- Maize Research Institute Luoyang Academy of Agriculture and Forestry Sciences Luoyang China
| | - Weidong Cheng
- Maize Research Institute Guangxi Academy of Agricultural Sciences Nanning China
| | - Juzhi Lv
- Maize Research Institute Guangxi Academy of Agricultural Sciences Nanning China
| | - Xiuquan Wang
- Maize Research InstituteMianyang Institute of Agricultural Sciences Mianyang China
| | - Tingqi Lu
- Maize Research InstituteMianyang Institute of Agricultural Sciences Mianyang China
| | - Chaojing Yin
- College of Economics and Management Southwest University Chongqing China
| | - Huan Yang
- College of Resources and Environment, and Academy of Agricultural Science Southwest University Chongqing China
| | - Jinlin Luo
- College of Resources and Environment, and Academy of Agricultural Science Southwest University Chongqing China
| | - Yuan Qiao
- College of Resources and Environment, and Academy of Agricultural Science Southwest University Chongqing China
| | - Zhi Yao
- College of Resources and Environment, and Academy of Agricultural Science Southwest University Chongqing China
| | - Xinping Chen
- College of Resources and Environment, and Academy of Agricultural Science Southwest University Chongqing China
- Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin Southwest University Chongqing China
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14
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Nitrogen Fertilization. A Review of the Risks Associated with the Inefficiency of Its Use and Policy Responses. SUSTAINABILITY 2021. [DOI: 10.3390/su13105625] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Nitrogen (N) is a key input to food production. Nearly half of N fertilizer input is not used by crops and is lost into the environment via emission of gases or by polluting water bodies. It is essential to achieve production levels, which enable global food security, without compromising environmental security. The N pollution level expected by 2050 is projected to be 150% higher than in 2010, with the agricultural sector accounting for 60% of this increase. In this paper, we review the status of the pollution from N fertilizers worldwide and make recommendations to address the situation. The analysis reviews the relationship between N fertilizer use, N use efficiency, no-point pollution, the role of farmer management practices, and policy approaches to address diffuse pollution caused by N fertilization. Several studies show a lack of information as one of the main hurdles to achieve changes in habits. The objective of this study is to highlight the gravity of the current global non-point pollution as well as the need for a communication effort to make farmers aware of the relationship between their activity and N pollution and, therefore, the importance of their fertilizer management practices.
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Singh P, Singh RK, Li HB, Guo DJ, Sharma A, Lakshmanan P, Malviya MK, Song XP, Solanki MK, Verma KK, Yang LT, Li YR. Diazotrophic Bacteria Pantoea dispersa and Enterobacter asburiae Promote Sugarcane Growth by Inducing Nitrogen Uptake and Defense-Related Gene Expression. Front Microbiol 2021; 11:600417. [PMID: 33510724 PMCID: PMC7835727 DOI: 10.3389/fmicb.2020.600417] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 11/27/2020] [Indexed: 12/27/2022] Open
Abstract
Sugarcane is a major crop in tropical and subtropical regions of the world. In China, the application of large amounts of nitrogen (N) fertilizer to boost sugarcane yield is commonplace, but it causes substantial environmental damages, particularly soil, and water pollution. Certain rhizosphere microbes are known to be beneficial for sugarcane production, but much of the sugarcane rhizosphere microflora remains unknown. We have isolated several sugarcane rhizosphere bacteria, and 27 of them were examined for N-fixation, plant growth promotion, and antifungal activity. 16S rRNA gene sequencing was used to identify these strains. Among the isolates, several strains were found to have a relatively high activity of nitrogenase and ACC deaminase, the enzyme that reduces ethylene production in plants. These strains were found to possess nifH and acdS genes associated with N-fixation and ethylene production, respectively. Two of these strains, Pantoea dispersa-AA7 and Enterobacter asburiae-BY4 showed maximum plant growth promotion (PGP) and nitrogenase activity, and thus they were selected for detailed analysis. The results show that they colonize different sugarcane tissues, use various growth substrates (carbon and nitrogen), and tolerate various stress conditions (pH and osmotic stress). The positive effect of AA7 and BY4 strains on nifH and stress-related gene (SuCAT, SuSOD, SuPAL, SuCHI, and SuGLU) expression and the induction of defense-related processes in two sugarcane varieties, GT11 and GXB9, showed their potential for stress amelioration and PGP. Both bacterial strains increased several sugarcane physiological parameters. i.e., plant height, shoot weight, root weight, leaf area, chlorophyll content, and photosynthesis, in plants grown under greenhouse conditions. The ability of rhizobacteria on N-fixing in sugarcane was also confirmed by a 15N isotope-dilution study, and the estimate indicates a contribution of 21-35% of plant nitrogen by rhizobacterial biological N fixation (BNF). This is the first report of sugarcane growth promotion by N-fixing rhizobacteria P. dispersa and E. asburiae strains. Both strains could be used as biofertilizer for sugarcane to minimize nitrogen fertilizer use and better disease management.
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Affiliation(s)
- Pratiksha Singh
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China.,State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bio Resources, College of Agriculture, Guangxi University, Nanning, China
| | - Rajesh Kumar Singh
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China.,State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bio Resources, College of Agriculture, Guangxi University, Nanning, China
| | - Hai-Bi Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China.,Guangxi South Subtropical Agricultural Science Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Dao-Jun Guo
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China.,State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bio Resources, College of Agriculture, Guangxi University, Nanning, China
| | - Anjney Sharma
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Prakash Lakshmanan
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China.,Interdisciplinary Center for Agriculture Green Development in Yangtze River Basin, College of Resources and Environment, Southwest University, Chongqing, China.,Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia, QLD, Australia
| | - Mukesh K Malviya
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Xiu-Peng Song
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Manoj K Solanki
- Department of Food Quality and Safety, The Volcani Center, Institute for Post-Harvest and Food Sciences, Agricultural Research Organization, Rishon LeZion, Israel
| | - Krishan K Verma
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China
| | - Li-Tao Yang
- Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China.,State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bio Resources, College of Agriculture, Guangxi University, Nanning, China
| | - Yang-Rui Li
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Sugarcane Research Center, Chinese Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, China.,Guangxi Key Laboratory of Crop Genetic Improvement and Biotechnology, Nanning, China.,State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bio Resources, College of Agriculture, Guangxi University, Nanning, China
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