Published Paper


Rice and Climate: Unveiling Greenhouse Gas Emissions and Sustainable Mitigation Strategies

Sushil Kumar
Botany Department, RKSD College, Kaithal
Page: 1149-1161
Published on: 2024 December

Abstract

Over 2 billion people rely on rice for their nourishment, which provides 20% of the world’s caloric consumption. But it also contributes significantly to the emissions of greenhouse gases (GHGs), namely nitrous oxide (N?O) and methane (CH?). In flooded rice fields, methane is generated anaerobically, where as nitrogen fertilizer and water management techniques are associated with N2O emissions. The environmental impact of rice cultivation has been addressed through a variety of mitigation techniques, including effective water and fertilizer management, the use of biochar, and cultivar selection. Mid-season drainage (MSD) and alternate wetting and drying are efficient water management strategies that lower CH? emissions by 10.62% to 100%, but they may also raise N?O emissions because of improved nitrification. Both CH? and N?O emissions can be reduced by fertilizer management, which includes the use of tailored fertilizers and appropriate nitrogen rates. By changing microbial structures and improving nutrient retention, the use of biochar not only lowers CH? and N?O emissions but also enhances soil health. There is considerable promise for lowering GHGs while preserving agricultural yields using bacterial inoculation techniques and cultivar selection, especially for drought-resistant rice types. Although, there are still issues with residue management and long-term sustainability, using rice straw for bioenergy production or soil integration presents more chances to reduce emissions. In order to balance agricultural production and environmental sustainability and pave the road for a rice cultivation industry that is climate resilient, this review emphasizes the necessity of integrated methods that include many mitigation techniques.

 

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