Effect of bioregulators on growth characteristics and yield of mung bean (Vigna radiata L.) under central plain zone of Uttar Pradesh

This study investigates the effects of various plant growth regulators (PGRs) on the growth, yield attributes, and yield of mung bean (Vigna radiata L.) under the central plain zone of Uttar Pradesh during Kharif 2023 and Kharif 2024. The experiment included treatments with indole-3-acetic acid (IAA), maleic hydrazide (MH), gibberellic acid (GA3), 2,3,5-triiodobenzoic acid (TIBA), and kinetin. The experiment was laid out in Randomized Block Design with eleven treatments each replicated thrice. Mung bean variety IPM 205-07 (Virat) was grown with the recommended agronomic practices. Significant improvements in plant height, number of primary branches, leaf area, number of flowers, pods per plant, test weight, seed yield, and harvest index were observed. In Kharif 2023, maximum plant height (49.09 cm), primary branches (5.53), and leaf area (246.71 cm²) were recorded in the GA3 @ 60 ppm treatment. Seed yield peaked at 1231.85 kg/ha with kinetin @ 15 ppm, representing a 15.34% increase over control. In Kharif 2024, similar trends were noted, with the highest seed yield (1200.36 kg/ha) also in kinetin @ 15 ppm. The pooled analysis showed maximum values of plant height (48.54 cm), primary branches (5.40), leaf area (242.58 cm²), seed yield (1216.11 kg/ha), and harvest index (35.41%) in kinetin @ 15 ppm. The study underscores the potential of PGRs, particularly kinetin, in enhancing mung bean productivity in this region.