Quantifying soil organic carbon’s critical role in cereal productivity losses under annualized crop rotations

Rubio, Valentina; Diaz-Rossello, Roberto; Quincke, J. Andrés; Es, Harold M. van

doi:10.1016/j.agee.2021.107607

Cited by 21 publications

(10 citation statements)

References 43 publications

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“…Triangle colors represent rotations: green: rice-pasture; blue: rice-soybean; red: rice-cover crop similar yields to the first year of rice in rice-pasture (Figure 3). This finding does not agree with recent work on rainfed crops in Uruguay, where changes in soil quality or SOC may have a stronger effect on the soil's chemical and physical properties and decreased productivity compared with flooded rice systems (Ernst et al, 2018;Rubio et al, 2021). However, we observed that rice following soybean had higher yields than rice following rice for the two intensification options, as predicted.…”

Section: Rice Grain Yieldscontrasting

confidence: 99%

“…However, replacing pasture with annual crops may negatively influence crop productivity. Recent research in Uruguay illustrated the positive effects of crop–pasture systems on wheat ( Triticum aestivum L.) and barley ( Hordeum vulgare L.), attributing this benefit to better soil quality or higher soil organic carbon (SOC) content (Ernst et al., 2018; Rubio et al., 2021). However, the positive effects of pasture on yield have been shown to decline over time, meaning that the more years under continuous annual crops instead of pasture, the lower the wheat yield (Ernst et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

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Irrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America

et al. 2022

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Rice (Oryza sativa L.) systems rotated with perennial pastures have intensified in South America to increase annual grain productivity, but the effects on rice yield and soil quality remain poorly understood. We evaluated rice grain yield, crop and pasture biomass production, and soil organic carbon (SOC) and total nitrogen stocks (0-15-cm depth) in three rice-based rotations over 8 yr in Uruguay. Treatments were: (a) rice-pasture [a 5 yr rotation of rice-ryegrass (Lolium multiflorum Lam.)-rice, then 3.5 yr of a perennial mixture of tall fescue (Festuca arundinacea Schreb.), white clover (Trifolium repens L.), and birdsfoot trefoil (Lotus corniculatus L.)], (b) rice-soybean [a 2-yr rotation of rice-ryegrass-soybean (Glycine max [L.] Merr.)-Egyptian clover (Trifolium alexandrinum L.)], and (c) rice-cover crop (an annual rotation of rice-Egyptian clover). Rice after soybean or pasture achieved the highest yield (9.8 Mg ha -1 ), 9% higher than rice after rice in the rice-pasture and rice-cover crop systems. Estimated belowground biomass under rice-pasture (2.7 Mg ha -1 ) was 12 and 42% greater than under rice-cover crop and rice-soybean rotations, respectively. Rice-pasture showed an increase of 0.6 Mg ha -1 yr -1 of SOC; no changes were observed in the intensified rotations replacing pasture with additional rice or soybean. All systems sustained soil total N. These results provide insights for implementing sustainable rice-based rotations, with rice-pasture being the only system that increased SOC while achieving high rice yields and belowground biomass productivity.

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Section: Rice Grain Yieldscontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Irrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America

et al. 2022

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“…The economic analysis was conducted based on short-term SICS application, whereas the slow accrual of soil fertility enhancement and soil conservation effects are expected to lead to increasing yield impacts in the long term [130,131]. The short timeframe also carried, e.g., the risk that initial investments for implementation of SICS were given too much weight (though in our study we could not include equipment costs, which could be significant for some SICS) or the risk that workload was overestimated since farmers need time to find the most efficient ways for managing SICS.…”

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confidence: 99%

Soil-Improving Cropping Systems for Sustainable and Profitable Farming in Europe

Hessel

Wyseure

Panagea

et al. 2022

Land

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Soils form the basis for agricultural production and other ecosystem services, and soil management should aim at improving their quality and resilience. Within the SoilCare project, the concept of soil-improving cropping systems (SICS) was developed as a holistic approach to facilitate the adoption of soil management that is sustainable and profitable. SICS selected with stakeholders were monitored and evaluated for environmental, sociocultural, and economic effects to determine profitability and sustainability. Monitoring results were upscaled to European level using modelling and Europe-wide data, and a mapping tool was developed to assist in selection of appropriate SICS across Europe. Furthermore, biophysical, sociocultural, economic, and policy reasons for (non)adoption were studied. Results at the plot/farm scale showed a small positive impact of SICS on environment and soil, no effect on sustainability, and small negative impacts on economic and sociocultural dimensions. Modelling showed that different SICS had different impacts across Europe—indicating the importance of understanding local dynamics in Europe-wide assessments. Work on adoption of SICS confirmed the role economic considerations play in the uptake of SICS, but also highlighted social factors such as trust. The project’s results underlined the need for policies that support and enable a transition to more sustainable agricultural practices in a coherent way.

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“…The percentage of SOC explained 65% of RY variations and decreasing SOC by 0.5% was associated with a reduction in RY of 17.7%. The fact that SOC had a higher association with RY than any of the SPQ indicators evaluated here (Figure 4) suggests that SOC might better represent the complex interaction between physical, chemical, and biological properties because it summarizes and regulates most of these properties (Bünemann et al., 2018; Schjønning et al., 2018; Rubio et al., 2021).…”

Section: Resultsmentioning

confidence: 87%

Deep tillage and nitrogen do not remediate cumulative soil deterioration effects of continuous cropping

2021

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Short-term solutions like increasing N fertilization and decompaction with deep tillage (DT) have been proposed to mitigate soil degradation in continuous cropping systems. However, the joint evaluation of these factors in established no-till systems is limited. This work aims to quantify corn yield losses generated by the cumulative degradation of soil quality of intensified no-till cropping systems, quantify to what extent yield losses could be mitigated by soil DT and N fertilization, and identify the most important process involved in yield reductions. Eleven experiments were installed during 2014 and 2015, on a typic Argiudoll with different soil quality generated by more than 50 years of contrasting land uses. A split-plot design was employed; the main plots were for DT (with and without) whereas the subplots were four N rates (0, 60, 120, and 240 kg ha −1 ). Overall, soil physical quality (SPQ) and carbon losses were associated with yield depletions. An increase in bulk density of 0.1 g cm −3 was associated with a 15.8% yield decrease. Deep tillage improved SPQ and modified water and N dynamics. However, these changes were small, variable, and did not affect corn growth. N fertilization improved yields but did not eliminate differences linked with land degradation and previous crop effects. Soil organic carbon had a better association with yields than bulk density, macroporosity, and penetration resistance. The results of this study highlight the importance of evaluating remediation practices to soil degradation under real conditions, regardless of its greater complexity for interpretation.

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Quantifying soil organic carbon’s critical role in cereal productivity losses under annualized crop rotations

Cited by 21 publications

References 43 publications

Irrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America

Irrigated rice rotations affect yield and soil organic carbon sequestration in temperate South America

Soil-Improving Cropping Systems for Sustainable and Profitable Farming in Europe

Deep tillage and nitrogen do not remediate cumulative soil deterioration effects of continuous cropping

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