Influence of distinct nutrient sources on growth, yield attributes, and yield of field bean (Dolichos lablab L.)

Abstract

A field experiment was conducted during the summer of 2024 at the Agriculture Research Station, Nelamakanahalli, Chikkaballapur, Karnataka, India, to study the "Influence of distinct nutrient sources on growth, yield attributes, and yield of field bean (Dolichos lablab L.)".The experiment comprised eleven treatments laid out in a Randomized Complete Block Design with three replications.The objective was to assess the impact of various nutrient sources on the growth, yield attributes, and overall yield of field bean.The results revealed that the application of a 100% recommended dose of fertilizers combined with two sprays of nano-fertilizer at 30 and 45 days after sowing significantly enhanced plant height (71.03 cm), yield attributes viz., number of pods per plant (23.91), pod length (5.23 cm), number of seeds per pod (3.95), and test weight (18.12 g).This treatment also achieved a higher seed yield (1139 kg ha) and haulm yield (2114 kg ha), outperforming all other nutrient sources and the absolute control.Conversely, the absolute control recorded the lower values for all measured parameters.In conclusion, the study demonstrates that applying 100% RDF combined with two nano-fertilizer sprays at 30 and 45 DAS is highly effective in enhancing the growth, yield attributes, and yield of field bean.This approach is best practice for maximizing productivity in field bean cultivation.