Long-term modelling of crop yield, nitrogen losses and GHG balance in organic cropping systems

Autret, Bénédicte; Mary, Bruno; Strullu, Loïc; Chlébowski, Florent; Mäder, Paul; Mayer, Jochen; Olesen, Jørgen E.; Beaudoin, Nicolas

doi:10.1016/j.scitotenv.2019.134597

Cited by 16 publications

(10 citation statements)

References 83 publications

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“…The results show that the long-term legacy effects of residue N inputs (5-8 years) may be about half those of the recent cycle (1-4 years). Such effects are clearly important and align well with simulated effects of soil fertility building in organic arable cropping systems (Autret et al, 2020;Doltra et al, 2019).…”

Section: Effects Of Short-term N Management Versus Long-term Effectssupporting

confidence: 70%

Legacy effects of soil fertility management on cereal dry matter and nitrogen grain yield of organic arable cropping systems

Pullens

Sørensen

Melander

et al. 2021

European Journal of Agronomy

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The yields of crops in organic farming are typically lower than in conventional farming, although this depend greatly on local climatic conditions and on crop and soil management. A long-term study over three consecutive 4-year cropping cycles at three locations in Denmark compared organic arable cropping systems varying in fertilization management (green manure crops, cover crops, livestock manure) to study the long-term effects of soil fertility management on crop yields. The analysis of the results showed that the nitrogen (N) derived from cover crops has a legacy effect on the dry matter and N grain yield of spring barley being traceable 5-8 years back in time. The net N input of crop residues and manure for the crop cycles 1-4 and 5-8 years prior to the winter wheat had a significant effect on both the dry matter and N grain yield of wheat.The management of organic cropping systems should focus on reducing the weed pressure, promoting soil fertility and increasing the soil N supply to optimize crop yields. For both winter wheat and spring barley, the weed pressure reduced both crop dry matter and the N grain yield. A cover crop as pre-crop had a significant positive effect on both dry matter and N yield of spring barley, while a cover crop in the rotation did not significantly affect grain yield of winter wheat. For both winter wheat and spring barley, manure application was most effective in increasing crop yields. However, N in applied crop residues also had considerable yieldenhancing effects. For winter wheat, the N inputs from crop residues from previous crop rotation cycles (1-4 and 5-8 years) significantly increased yields, while for spring barley, N input in crop residues from incorporated cover crop and the long-term crop rotation cycle (5-8 years) significantly enhanced both dry matter and N grain yield. These legacy effects of soil fertility management through enhancing and retaining organic N inputs of organic arable cropping suggest that a holistic approach to soil and crop management is necessary, and this needs to focus on increasing weed suppression, soil fertility and targeting manure inputs for enhanced N uptake.

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Section: Effects Of Short-term N Management Versus Long-term Effectssupporting

confidence: 70%

Legacy effects of soil fertility management on cereal dry matter and nitrogen grain yield of organic arable cropping systems

Pullens

Sørensen

Melander

et al. 2021

European Journal of Agronomy

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“…Both STICS and AMG made good predictions of changes in SOC stocks in very long‐term experiments (Farina et al, 2020). STICS could also well simulate cover crop effects on SOC stocks and associated changes in N mineralization in three long‐term experiments in France (Constantin et al, 2012) and four long‐term experiments in Switzerland and Denmark (Autret et al, 2020). Finally, STICS has estimated well key environmental variables such as nitrate leaching and N 2 O emissions (Constantin et al, 2012; Plaza‐Bonilla et al, 2017; Vuichard et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

Estimating the carbon storage potential and greenhouse gas emissions of French arable cropland using high‐resolution modeling

Launay

Constantin

Chlébowski

et al. 2021

Global Change Biology

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Many studies have assessed the potential of agricultural practices to sequester carbon (C). A comprehensive evaluation of impacts of agricultural practices requires not only considering C storage but also direct and indirect emissions of greenhouse gases (GHG) and their side effects (e.g., on the water cycle or agricultural production). We used a high‐resolution modeling approach with the Simulateur mulTIdisciplinaire pour les Cultures Standard soil‐crop model to quantify soil organic C (SOC) storage potential, GHG balance, biomass production and nitrogen‐ and water‐related impacts for all arable land in France for current cropping systems (baseline scenario) and three mitigation scenarios: (i) spatial and temporal expansion of cover crops, (ii) spatial insertion and temporal extension of temporary grasslands (two sub‐scenarios) and (iii) improved recycling of organic resources as fertilizer. In the baseline scenario, SOC decreased slightly over 30 years in crop‐only rotations but increased significantly in crop/temporary grassland rotations. Results highlighted a strong trade‐off between the storage rate per unit area (kg C ha−1 year−1) of mitigation scenarios and the areas to which they could be applied. As a result, while the most promising scenario at the field scale was the insertion of temporary grassland (+466 kg C ha−1 year−1 stored to a depth of 0.3 m compared to the baseline, on 0.68 Mha), at the national scale, it was by far the expansion of cover crops (+131 kg C ha−1 year−1, on 17.62 Mha). Side effects on crop production, water irrigation and nitrogen emissions varied greatly depending on the scenario and production situation. At the national scale, combining the three mitigation scenarios could mitigate GHG emissions of current cropping systems by 54% (−11.2 from the current 20.5 Mt CO2e year−1), but the remaining emissions would still lie far from the objective of C‐neutral agriculture.

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“…Future impacts of climate variability on all crops and cropping systems could be studied by using crop growth models with long-term scenario analysis. Autret et al, (2020) did long term modeling of crop yield, N losses and GHG balance in organic cropping systems through the crop model STICS. The results showed that total N fertilization and total N gaseous loss as well as N surplus and N storage have significant correlations among each other.…”

Section: Long-term Scenario Analysismentioning

confidence: 99%

Impact of Climate Change on Dryland Agricultural Systems: A Review of Current Status, Potentials, and Further Work Need

Ahmed

Hayat

Ahmad

et al. 2022

Int. J. Plant Prod.

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Dryland agricultural system is under threat due to climate extremes and unsustainable management. Understanding of climate change impact is important to design adaptation options for dry land agricultural systems. Thus, the present review was conducted with the objectives to identify gaps and suggest technology-based intervention that can support dry land farming under changing climate. Careful management of the available agricultural resources in the region is a current need, as it will play crucial role in the coming decades to ensure food security, reduce poverty, hunger, and malnutrition. Technology based regional collaborative interventions among Universities, Institutions, Growers, Companies etc. for water conservation, supplemental irrigation, foliar sprays, integrated nutrient management, resilient crops-based cropping systems, artificial intelligence, and precision agriculture (modeling and remote sensing) are needed to support agriculture of the region. Different process-based models have been used in different regions around the world to quantify the impacts of climate change at field, regional, and national scales to design management options for dryland cropping systems. Modeling include water and nutrient management, ideotype designing, modification in tillage practices, application of cover crops, insect, and disease management. However, diversification in the mixed and integrated crop and livestock farming system is needed to have profitable, sustainable business. The main focus in this work is to recommend different agro-adaptation measures to be part of policies for sustainable agricultural production systems in future.

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Long-term modelling of crop yield, nitrogen losses and GHG balance in organic cropping systems

Cited by 16 publications

References 83 publications

Legacy effects of soil fertility management on cereal dry matter and nitrogen grain yield of organic arable cropping systems

Legacy effects of soil fertility management on cereal dry matter and nitrogen grain yield of organic arable cropping systems

Estimating the carbon storage potential and greenhouse gas emissions of French arable cropland using high‐resolution modeling

Impact of Climate Change on Dryland Agricultural Systems: A Review of Current Status, Potentials, and Further Work Need

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