Interactive effects of phosphorus and potassium on biomass production and accumulation of nitrogen in field grown mungbean (Vigna radiata L.)

摘要

A field experiment was carried out in the paddy field of Charfession Govt. College, Bhola, Bangladesh during rabi season 2017 to evaluate growth, biomass production and nitrogen accumulation in mungbean plants. The size of the plot was 60 cm x 45 cm. The distance between row to row and plant to plant was 30 cm and 10 cm, respectively. Eight plants were raised per plot. Seven treatments were Psub0/subKsub0/sub (Control), Psub5/subKsub6/sub, Psub5/subKsub12/sub, Psub5/subKsub18/sub, Psub10/subKsub6/sub, Psub10/subKsub12/sub and Psub10/subKsub18/sub kg hasup-1/sup. Forty day old plants were harvestedas root, stem and leaf. The highest plant height (17.2 cm) and number of leaves (14.3 no. plantsup-1/sup) were recorded in P5K12 kg hasup-1/sup treatment at harvest. The maximum concentration of nitrogen in root, stem and leaf were 1.59, 2.51 and 3.82% in the treatments of Psub5/subKsub12/sub, Psub5/subKsub12/sub and Psub5/subKsub18/sub kg hasup-1/sup, respectively. The highest amount of dry matter yield 1.88 g plantsup-1/sup was observed in Psub5/subKsub12/sub kg hasup-1/sup treatment. The overall better dose was Psub5/subKsub12/sub kg hasup-1/sup. Thus, a considerable amount of nitrogen and organic matter might be added to paddy fields through the cultivation of mungbean in the coastal region of Bangladesh.