Feasibility of fertigation of phosphorus and potash on vegetable clusterbean

Abstract

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 (I1–Irrigation at 60% CPE, I2–80% CPE and I3–100% CPE), five levels of fertility (F1–30 kg phosphorus and 30 kg potash/ha, F2–30 kg phosphorus and 45 kg potash/ha, F3–45 kg phosphorus and 30 kg potash/ha, F4–45 kg phosphorus and 45 kg potash/ha and F5–60 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 I3F5 (irrigation at I3–100% CPE along with fertigation of 60 kg phosphorus and 60 kg potash/ha). It also recorded higher net returns and BCR.