tailieunhanh - Differential response of rice hybrids and varieties to nitrogen fertilization and their exploitation in Andaman and Nicobar islands

In Andaman and Nicobar Islands, India, rice productivity is low due to traditional long duration variety (C-14-8) cultivation on poorly fertile soils with minimal or no fertilizer use due to heavy rains. In this context, ability of rice hybrids and high yielding varieties (HYV) under varying nitrogen supplies to adopt and enhance rice productivity and profits. Field study was made during 2015 rainy season in split plot design with three replications. Treatments formed by combination of 5 rice cultivars (3 hybrids: KRH-4, 28P09 & DRRH-3 and two HYV: WGL-14 and CARI Dhan-6) in main plot and four nitrogen (N) rates (0, 50, 100 and 150 kg/ha) as sub-plot treatments. Best performing cultivars (KRH-4 hybrid and WGL-14 variety) and nitrogen rate (100 kg) were evaluated in 2016 and 2018 seasons. | Differential response of rice hybrids and varieties to nitrogen fertilization and their exploitation in Andaman and Nicobar islands

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