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Direct-Seeded Rice in Nepal

DOI : https://doi.org/10.36349/easjals.2021.v04i03.005
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Abstract: To over half the world's population, rice is the primary staple food. In recent years, there has been a shift from transplanted rice to direct-seeded rice cultivation mainly driven by seasonal scarcity of agricultural labor, increasing water scarcity, and high cost of production. Labor constraints mean sowing and transplanting are often delayed, resulting in yield losses. It is cost and time intensive for farmers. It causes adverse effects to soil and environment. Because of the low input demand, direct-seeded rice (DSR) has gained a lot of attention. Direct seeded rice refers to the process of developing seed crops from field seeds instead of transplanting seedlings. Three methods of direct seeding are known, namely: dry-DSR, wet-DSR and water seeding. Precise land grading, good crop establishment, accurate water management, weed management, and nutrient management are the most important prerequisites for successful direct-seed rice crop. There are no varieties to date specifically targeted for DSR but many of the inbred varieties and hybrids bred for puddled transplanted are found to be suitable. Direct seeding follows the aerobic cultivation of paddy, so the nutrient dynamics are altered. Several key nutrients like N, P, S, Zn, and Fe are likely to be a constraint. The infestation of weeds can cause significant loss of DSR yield.

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Dr. Afroza Begum

Lecturer, Dept. of Pharmacology and Therapeutics, Shaheed Monsur Ali Medical College & Hospital, Uttara, Dhaka-1230, Bangladesh

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