1Ph.D. Research Scholar, Division of Agronomy, ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110 012
2Principal Scientist, Division of Agronomy, ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110 012
3Senior Scientist, Division of Agronomy, ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110 012
4Scientist (Senior Scale), Division of Agronomy, ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110 012
5Director, Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad, Telangana-500 059
ICAR-Indian Agricultural Research Institute, Pusa, New Delhi-110012
Online Published on 29 January, 2022.
An experiment on was conducted during the rainy (kharif) season of 2019 at Barapani, Meghalaya, to study the comparative effect of buckwheat (Fagopyrum esculentum Moench) and ricebean [Vigna umbellate (Thunb.) Ohwi & H. Ohasi] green manures on growth and productivity of rice (Oryza sativa L.), to assess the economic feasibility of various nutrient-management options in rice-production system. The results revealed that, plant height growth, dry-matter accumulation, tillers, grain yield and economics were improved under green-manuring buckwheat and rice bean along with RDF combination. In situ green manuring of and nutrient management (RDF 100, 75 and 50%) significantly (P≤0.05) influenced the grain yield (t/ha) of direct-seeded, upland rice. Maximum grain yield (4.55 t/ha) was obtained with buckwheat green-manuring + 100% recommended dose of fertilizer. Soil-microbial activity in terms of enhanced enzymatic activity of acid phosphatase was observed under green-manuring with RDF (1005). Hence buckwheat proved to be a superior green manure along with 100 recommended doses of fertilizers.
Buckwheat, Direct-seeded, Economics, Green manuring, Upland rice, Yield
