Effect of levels of nitrogen, phosphorus and biofertilizer on growth, yield attributes and yield of rabi greengram

摘要

A field experiment was conducted at Anand Agricultural University, Anand, Gujarat during rabi season of the years 2013-14 and 2014-15 to study the response of rabi greengram (Vigna radiata L.) to levels of nitrogen, phosphorus and biofertilizer. An experimental result on pooled basis revealed that application of nitrogen, phosphorus and biofertilizer recorded significant increase in various growth attributes, yield attributes and yield of rabi greengram. Among the different levels of nitrogen, application of N @ 30 kg/ha produced significantly superior plant height, number of branches per plant, dry weight of root nodules per plant, number of pods per plant, seed yield (1219 kg/ha) and haulm yield (2823 kg/ha) and it remained at par with applicationof N @ 20 kg/ha. Similarly, application of phosphorus @ 40 kg/ha recorded significantly higher plant height, number of branches per plant and test weight and the highest in dry weight of root nodules per plant, number of pods per plant, seed yield (1240kg/ha) and haulm yield (2863 kg/ha) as compared to lower levels of phosphorus. Biofertilizers (seed inoculation of Rhizobium + soil application PSB) recorded significantly the highest on growth parameters, yield attributes, seed yield (1212 kg/ha) and haulm yield (2816 kg/ha) over control. Treatment combination P3Bj (40 kg P2Os/ha along with biofertilizer i. e. Rhizobium+PSB) gave outstanding performance in case of dry weight of root nodules per plant, number of pods per plant and seed yield of rabi greengram.