Feasibility of fertigation of phosphorus and potash on vegetableclusterbean

摘要

A field experiment under north Gujarat conditions was conducted in summer seasons of 2010 and 2011 at Instructional Farm, Department of Agronomy, Sardarkrushinagar. Sixteen treatment combinations involving three levels of irrigation (1,-Irrigation at60% CPE, I_2-80% CPE and I_3-100% CPE), five levels of fertility (F_1-30 kg phosphorus and 30 kg potash/ha, F_2-30 kg phosphorus and 45 kg potash/ha, F_3-45 kg phosphorus and 30 kg potash/ha, F_4-45 kg phosphorus and 45 kg potash/ha and F_5-60 kg phosphorus and 60 kg potash/ha) and a control (RDF i. e. 20-40 kg NP/ha through surface irrigation) were tried in the experiment with RBD design having four replications. Higher yield attributes and green pod yield (150.3 q/ha) and straw yield (172.8 q/ha) of clusterbean were recorded under treatment I_3F_5 (irrigation at I_3-100% CPE along with fertigation of 60 kg phosphorus and 60 kg potash/ha). It also recorded higher net returns and BCR.