Crop establishment and nitrogen management affect greenhouse gas emission and biological activity in tropical rice production

Mohanty, SK; Swain, Chinmaya Kumar; Sethi, Santosh Kumar; Dalai, P.C.; Bhattachrayya, P.; Kumar, Anjani; Tripathi, Rahul; Shahid, Mohammad; Panda, B.B.; Kumar, Upendra; Lal, Banwari; Gautam, Priyanka; Munda, Sushmita; Nayak, A. K.

doi:10.1016/j.ecoleng.2017.03.014

Cited by 37 publications

(10 citation statements)

References 71 publications

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“…Even if such curves were to be developed based on one or a few studies, their utilities would be limited to a small inference space. Even within each study (e.g., Mohanty et al., 2017; Yoo et al., 2016), the scores assigned to CH 4 and N 2 O emissions do not increase or decrease simultaneously with SQI measures, meaning that environmental scoring curves might need to be developed separately for CH 4 and N 2 O emissions.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of indirect and direct scoring methods to relate biochemical soil quality indicators to ecosystem services

Xia

Wander

2022

Soil Science Soc of Amer J

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Soil health assessments use scoring curves to quantify relationships between soil quality indicators (SQIs) and ecosystem services (ESSs). We evaluated methods for scoring curve development using three labile C pools (β-glucosidase [BG], fluorescein diacetate [FDA] hydrolysis, and permanganate oxidizable carbon [POXC]).Concepts and methods for SQI interpretation used by established frameworks were assessed, with 129 studies reporting relationships to either soil organic C (SOC) (n = 367), a common surrogate for indirect estimation of ESSs, or direct measures of crop yield (n = 88), soil respiration (n = 66), and N 2 O and CH 4 emissions (n = 51). Indirect assessment of BG using SOC and site covariates resolved tillage-based differences (P < .05). Correlations between SOC and SQIs observed under different land uses suggested that use of SOC for indirect scoring would be more effective for FDA than POXC. Direct relationships were generally positive between SQIs and yield (89%), soil respiration (89%), and N 2 O and CH 4 emissions (76%), but such relationships could be nonlinear. Direct assessment revealed that both positive and negative ESS outcomes increased with labile C fraction abundance that complicates the assignment of ESS-based SQI scores. Although direct SQI scores are relatively easy to interpret, relationships between scores and SQIs can vary 10-fold for different sites and cropping systems (upland versus rice paddy), which is much greater than treatment-based differences observed within single sites. To quantify relationships between SQIs and ESS outcomes, one must measure influential site covariates (SQI-ESS covariates) along with details about management, sampling, and analysis.

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Section: Resultsmentioning

confidence: 99%

Evaluation of indirect and direct scoring methods to relate biochemical soil quality indicators to ecosystem services

Xia

Wander

2022

Soil Science Soc of Amer J

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“…Inorganic nitrogen (N) fertilisers contribute to approximately 75% of direct emission from agricultural soil (Zheng et al 2004;Mohanty et al 2017). Besides contributing to GHG emission, nitrogenous fertilisers decrease soil microbial activity and bacterial diversity (Ding et al 2017).…”

Section: Traditional Organic Compostingmentioning

confidence: 99%

Traditional agriculture: a climate-smart approach for sustainable food production

Singh

2017

Energ. Ecol. Environ.

225

118

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Sustainable food production is one of the major challenges of the twenty-first century in the era of global environmental problems such as climate change, increasing population and natural resource degradation including soil degradation and biodiversity loss. Climate change is among the greatest threats to agricultural systems. Green Revolution though multiplied agricultural production several folds but at the huge environmental cost including climate change. It jeopardized the ecological integrity of agroecosystems by intensive use of fossil fuels, natural resources, agrochemicals and machinery. Moreover, it threatened the age-old traditional agricultural practices. Agriculture is one of the largest sectors that sustain livelihood to maximum number of people and contribute to climate change. Therefore, a climate-smart approach to sustainable food production is the need of hour. Traditional agriculture is getting increased attention worldwide in context of sustainable food production in changing climate. The present article advocates traditional agriculture as a climate-smart approach for the sustainable food production and also deliberates the correlation between climate change and agriculture.

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“…Although comparisons between different LCA studies in different regions are not straightforward (Wang et al 2015;Leach et al 2012), there were many interesting results from this study. The maize production in Southwest China involves several environmental hotspots, such as LU, GWP, EP, and ATP, which are signi cantly different from previous research for other crop production systems in China (Wang et al 2017), India (Mohanty et al, 2017), USA (Kim et al 2014). The particular challenges for China's agricultural systems are greater than those in other countries with larger land, water endowments, and smaller populations.…”

Section: Environmental Consequences and Energy Consumptionmentioning

confidence: 82%

Environmental Impacts, Human Health, and Energy Consumption of Nitrogen Management for Maize Production in Subtropical Region

Yao

Zhang

Wang

et al. 2021

Preprint

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Over-application of fertilizers could not improve crop yield and agronomic efficiency, but result in increasing nitrogen (N) surplus and adverse effects on the ecosystem sustainability. Although some previous studies have addressed one or a few environmental aspects in crop production, an integrated assessment for the effects of N fertilizer on multiple environmental impacts, and the optional steps of normalization and weighting is required. A consecutive 2-yr plot-based field experiment was conducted with five N fertilizer levels (0, 90, 180, 270, and 360 kg N ha-1) in maize production at three sites in Southwest China, to evaluate the environmental performance and sustainability through joint use of life cycle assessment (LCA) and energy consumption analysis. Results demonstrated that the optimal N rate (180 kg N ha-1) showed greater potential for maintaining high yield (achieved 86% of the yield potential) and reducing the global warming (-31%), acidification (-47%), eutrophication (-44%) compared to farmers’ practice, and energy depletion potentials, by reducing pollutants emission during the production and transportation of N fertilizer and Nr losses at farm stage. Optimal N treatment indirectly reduced the land use, life-cycle human toxicity, aquatic eco-toxicity, and terrestrial eco-toxicity potentials by improving grain yield and agronomic efficiency. In addition, the optimal N treatment reduced the energy consumption by enhancing the energy use efficiency (EUE) (+74%) and reducing non-renewable energy form (-45%) than the farmer’s practice. This study will provide comprehensive information for both scientists and farmers involved in maize production and N management in subtropical region.

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Crop establishment and nitrogen management affect greenhouse gas emission and biological activity in tropical rice production

Cited by 37 publications

References 71 publications

Evaluation of indirect and direct scoring methods to relate biochemical soil quality indicators to ecosystem services

Evaluation of indirect and direct scoring methods to relate biochemical soil quality indicators to ecosystem services

Traditional agriculture: a climate-smart approach for sustainable food production

Environmental Impacts, Human Health, and Energy Consumption of Nitrogen Management for Maize Production in Subtropical Region

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