Effect of nitrogen and phosphorus fertilization on growth, yield and nutrient uptake of winter rice bean (Vigna umbellata)

A field experiment was conducted during the winter (rabi) season of 1994-95 and 1995-96 at Bhubaneshwar, in acidic sandy-loam soil, to study the effec t of nitrogen and phosphorus fertilization on growth, yield and nutrient up take of rice bean [Vigna umbellata (Thumb.) Ohwi & Ohashi]. Application of nitrogen at 40 kg/ ha and phosphorus at 60 kg/ha markedly influenced the br anches and pods/ plant, seeds/pod and 1,000-seed weight and significantly i ncreased the seed yield by 57.3 and 27.7% over the respective control. The N and P content as well as their uptake in seed and haulm also increased si gnificantly up to 40 kg N and 60 kg P2O5/ha.