Synergistic Effects of Phosphorus, Molybdenum, and Rhizobium on Greengram (Vigna radiata L.) Yield in Light Textured Soil

Abstract

A field experiment was carried out during kharif, 2019 and 2020 in different adjoining similar sites at Agronomy Instructional Farm, Chimanbhai Patel College of Agriculture Sardar krushinagar Dantiwada Agricultural University, Sardar krushinagar. The soil of the experimental field was loamy sand. The experiment comprised of eighteen treatment combinations i.e. three levels of phosphorus (P1 : 20 kg P2O5 ha-1, P2 : 40 kg P2O5 ha-1 and P3 : 60 kg P2O5 ha-1); three levels of molybdenum (Mo0 : 0.0 kg Mo ha-1, Mo1 : 0.5 kg Mo ha-1 and Mo2 : 1.0 kg Mo ha-1) and two levels of Rhizobium (R0 : without rhizobium inoculation and R1 : with rhizobium inoculation) were evaluated with GM 4 cultivar of green gram in randomized block design (R.B.D.) with factorial concept with three replications. Results revealed that application of 40 kg P2O5 ha-1 and 0.5 kg Mo ha-1 significantly enhanced the all-nodulation parameters, growth, yield attributes, seed and stover yields of greengram over 20 kg P2O5 ha-1 and 0.0 kg Mo ha-1. Seed inoculation with Rhizobium significantly improved the numbers and weight of effective nodules per plant at 45 and 60 DAS, and others parameters i.e., yield attributes, seed and stover yield. Hence, application of 40 kg P2O5 ha-1 along with 0.5 kg Mo ha-1 and seed inoculation with Rhizobium were found to be most beneficial for greengram variety GM 4 grown in the light textured soils.