Physiological parameters of cowpea [Vigna unguiculata (L.) Walp] as influenced by integrated nutrient management

A field trial was conducted at the agronomy farm, S.K.N. Agriculture University, Jobner during the kharif season of 2019 to study the response of cowpea [Vigna unguiculata (L.) Walp] to integrated nutrient management. The experiment comprised 12 treatments involving control, RDF (20:40), FYM, Poultry Manure, and their respective combinations, including biofertilizers, which were laid out in a randomized block design with four replications. Results revealed that the magnitude of most of physiological parameters was increased under combined application of T₁₂- 50% RDF + PM @ 2 t/ha + Rhizobium + PSB followed by T₁₁- 50% RDF + FYM @ 4 t/ha + Rhizobium + PSB, T₁₀- 50% RDF + PM @ 2 t/ha + PSB, T₉- 50% RDF + FYM @ 4 t/ha + PSB, T8- 50% RDF + PM @ 2 t/ha + Rhizobium, T₇-50% RDF + FYM @ 4 t/ha + Rhizobium, T₆- 50% RDF + PM @ 2 t/ha, T₅- 50% RDF + FYM @ 4 t/ha, T₄-PM @ 4 t/ha, T₃- FYM @ 8 t/ha and T₂- 100% RDF (20:40) and significantly superior to rest of the treatments. T₁₂ treatment recorded higher CGR, RGR, Leaf area index, and Chlorophyll content remained at par on treatments T₆, T₇, T₈, T₉, T₁₀, and T₁₁.