Influence of phosphorus and molybdenum on growth attributes and yield of black gram in typic haplustalf

Abstract

A field experiment was conducted to appraise the effect of phosphorus (P) and molybdenum (Mo) on growth and yield of black gram (VBN-8) in Virudhunagar district. The treatment encompassed five levels of P2O5 (0, 25, 50, 75, 100 kg ha-1) and four levels of Mo (0, 0.5, 1.0, 1.5 kg ha-1). The results affirmed that incremental dose of P and Mo significantly influences the growth and yield of black gram. Application of P2O5 at 100 kg ha-1 showed transcendent effect on plant height, nodulation, number of pods, dry matter production and grain yield. Analogous to P, Mo fertilization at 1.5 kg ha-1 equivalently promotes plant height, nodulation, number of pods, dry matter production and seed yield. The conjoint effects of both the nutrients were also conducive in upgrading the productivity of black gram. Thus a synergetic interaction was contemplated between both the anions.