Abstract
The soils of South Asia provide food to almost 1.8 billion people but are prone to many sustainability issues. The ever-increasing population has put enormous pressure on the available natural resources (land/soil and water), which is threatening future food security. The fertile farmlands are being encroached by urbanzation. Declining groundwater levels, increasing micronutrient deficiencies, the use of fertile soil for brick making, degrading soil structure, and global warming are serious sustainability issues in South Asia. The extensive production of cereals and conventional soil management practices are increasing soil erosion; depleting soil organic matter, soil fertility, water resources, and increasing salinization. The restoration and management of soil organic matter, rainwater harvesting, and the efficient use of water and sustainable nutrient management are essential to sustain the long-term productivity of agricultural soils. Diversification of monocropping systems and the adoption of conservation agriculture may enhance the sequestration of soil carbon and increase biodiversity. However, site-specific technologies must be identified and made available to farmers. Prime agricultural land must be protected against urban encroachment. Communication and collaboration between scientists, farmers, and policymakers are needed to manage soils for ensuring food security in South Asia. The objective of this review is to deliberate the causes of soil degradation in South Asia and suggest soil management options to reverse the degradation trends and ensure long-term food security in the region.
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Nawaz, A., Farooq, M., Ul-Allah, S. et al. Sustainable Soil Management for Food Security in South Asia. J Soil Sci Plant Nutr 21, 258–275 (2021). https://doi.org/10.1007/s42729-020-00358-z
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DOI: https://doi.org/10.1007/s42729-020-00358-z