Soil Erosion and Crop Productivity: A Worldwide Perspective

Wolman, M. Gordon

doi:10.2134/1985.soilerosionandcrop.c2

Cited by 12 publications

(2 citation statements)

References 8 publications

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“…However, there is a large variability and often an overestimation of the adverse effects because of inconsistent approaches and methodologies [1,35]. Some soils are more vulnerable than others, and the degradative effects are specific to soils, ecoregions, and crops, depending on the management and environmental factors [36]. The north-west Himalayan region of India is one of the hot spots of erosion-induced soil degradation [37,38].…”

Section: Introductionmentioning

confidence: 99%

Impacts of Soil Erosion on Soil Quality and Agricultural Sustainability in the North-Western Himalayan Region of India

et al. 2023

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Erosion by water reduces soil quality and hence crop yield. Understanding the response of crop yields to soil erosion is vital in assessing agriculture’s vulnerability to erosion. However, these effects are difficult to quantify. The study presents a quantitative relationship between soil erosion and soil quality and productivity of rainfed wheat (Triticum aestivum) by comparing field plots with different degrees of erosion in some sub-tropical alfisols in the Doon Valley region of India. By comparing the topsoil depth with the reference site as the control, erosion severity was classified into different phases such as slight, moderate, severe, and very severe. A quantitative, weighted additive model was used to evaluate soil quality for different phases of erosion using soil clay content, water holding capacity, soil aggregate, soil organic carbon, pH, CEC, total N, available P, and available K. The synthesis of long-term experimental data revealed that the mean soil erosion rate varied from 5.5 Mg ha−1 yr−1 in slightly eroded plots to 33.4 Mg ha−1 yr−1 in very severely eroded plots. Compared with the reference forest, the soil organic carbon (SOC) declined by 81.4% and water holding capacity by 31% in severely eroded soils. A substantial loss of total N, extractable P, and available K was also observed. Water stable aggregates (WSA) decreased from 86% to 12.6%, and the cation exchange capacity (CEC) from 25 to 12.6 c mol(+) kg−1. The soil quality index was 0.7 in slightly eroded compared with 0.4 in severely eroded soil. Similarly, the sustainable yield index for wheat was 0.9 and 0.6 for slightly and severely eroded soils, respectively. Thus, there is a strong need to identify land management systems that reduce erosion risks, restore eroded soils, and enhance soil quality.

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Section: Introductionmentioning

confidence: 99%

Impacts of Soil Erosion on Soil Quality and Agricultural Sustainability in the North-Western Himalayan Region of India

et al. 2023

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“…Soil erosion occurs in every natural environment (Wolman, 1985). Erosion rates accelerate when land use changes from permanent cover to cropland.…”

Section: Soil Erosionmentioning

confidence: 99%

Management of self-seeding winter cereal cover crops in a soybean-corn rotation

McDonald

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Chapter 1: General Introduction Cover crops provide environmental benefits that include reducing erosion, increasing soil organic matter, improving chemical and physical soil properties, weed suppression, insect and disease management, and reducing nitrate leaching (Hartwig and Ammon, 2002; Sarrantonio and Gallandt, 2003). Despite these benefits, cover crop adoption has been low (Snapp et al., 2005). Adoption is low because of a limited fall and spring growing season after cash crop harvest and before planting (Snapp et al., 2003), delayed cash crop planting

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Desertification Control through Floodwater Harvesting: The Current State of Know-How

Kowsar¹

2008

The Future of Drylands

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Soil Erosion and Crop Productivity: A Worldwide Perspective

Cited by 12 publications

References 8 publications

Impacts of Soil Erosion on Soil Quality and Agricultural Sustainability in the North-Western Himalayan Region of India

Impacts of Soil Erosion on Soil Quality and Agricultural Sustainability in the North-Western Himalayan Region of India

Management of self-seeding winter cereal cover crops in a soybean-corn rotation

Desertification Control through Floodwater Harvesting: The Current State of Know-How

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