Vol. 10, Issue 12 (2021)

Author(s):
Rajaneesh Singh, Virendra Kumar Patel and Raj Pandey

Abstract:
A field experiment was conducted to observe the effect of inorganic and organic manures on growth, flowering and yield of cowpea (Vigna unguiculata L.) at Jaunpur, Uttar Pradesh in 2019 year. The experiment was arranged in a Randomized Block Design (RBD) with 10 treatments (T₁, T₂, T₃, T₄, T₅, T₆, T₇, T₈, T₉ and T₁₀) of three replicates each. The experiment using treatments T₁ (100% RDF), T₂ (75% RDF + 25% FYM), T₃ (75% RDF + 25% VC),T₄ (75% RDF + 25% PM), T₅ (75% RDF + 25 NC), T₆ (50% RDF + 50% FYM), T₇ (50% RDF + 50% VC), T₈ (50% RDF + 50% PM), T₉ (50% RDF +50% NC), T₁₀ (Control). Observations of crop data revealed that (T₃) i.e. 75% RDF + 25% vermicompost showed maximum plant growth among all of the treatments at different growth intervals i.e. plant height (113.9 cm), leaf area (604.7 cm²), branch number (12.3), days of first flowering (49.8), days to 50% flowering (56.3), first pod emergence (55.1), number of pod per plant (36.6), length of pod (36.1 cm), diameter of pod (2.9 cm), weight of per pod (8.8 g), green pod yield (112.9 q/ha), number of seed per pod (12.2), 100-seed weight (18.2), seed yield per plot (4.5 kg), seed yield (22.4 q/ha). Moreover, the maximum net returns (Rs 67845 ha^-1) and B:C ratio (2.60) were obtained with the T₃ i.e. T₃ (75% RDF + 25% VC). Whereas, minimum plant growth, yield and net return and B:C ratio were recorded under treatment (T₁₀) control. Above result showed that T₃ (75% RDF + 25% VC) was best in all treatments.