Yield formation in common buckwheat:III. Effect of Graded Levels of Nitrogen and Phosphorus Nutrition in Indeterminate Ecotype

The paper is based on 2-year field-based experimental evaluation of determinate ecotype (D 90151) of Nepali common buckwheat (Fagopyrum esculentum Moench) in Chitwan (345 masl), and Kathmandu (1400 msal). The experimental results revealed that the optimum dose of N:P2O5 for determinate ecotype of Nepali common buckwheat ranges from 20:20 to 20:40 kg/ha with a basal dose of K2O @ 20 kg/ha in Chitwan and Kathmandu. Higher doses of both N and P2O5 and heavy rainfall during flowering and fruit setting caused decline in kernel yield. Application of N:P2O5 @ 20:20 to 20:40 kg/ha with a basal dose of K2O @ 20 kg/ha has been recommended for achieving higher kernel yield of determinate ecotype of Nepali common buckwheat with short plant architecture such as Sathiya in the agro-ecological conditions of Chitwan (terai) and Kathmandu (hill).