Effect of humic acid application methods on yield and quality of Mungbean (Vigna radiate L.)

The application methods of nutrients play a pivotal role in enhancing crop production. Soil amendment aids in nutrient fixation, while foliar application may improve penetration through the cuticle, thereby reducing nutrient losses. An experiment conducted at the University of Agriculture Faisalabad from March to June 2017 aimed to evaluate different application methods for humic acid in mung beans using a Randomized Complete Block Design. The treatments included were [H1= Control (dry seed), H2= hydro priming, H3=seed priming with 2% humic acid H4=4% humic acid, H5= 2 kg humic acid ha-1, H6= 4 kg humic acid ha-1, H7=0.1% spray of humic acid and H8=0.2% spray of humic acid. Observations on yield and quality components were recorded by following standard procedures. Results showed that No. of pod bearing branches (7.33), No. of pods per plant (18.00), No. of seeds per pod (9.66), 1000-seed weight (44.00 g), plant height (45.16 cm), seed yield (1487.70 kg ha-1), biological yield (5191.30 kg ha-1), harvest index (28.64 %) and protein contents (25.20 %) were statistically significant in the treatment H6 (4 kg humic acid ha-1). In conclusion, soil application of humic acid, especially at a rate of 4 kg ha-1, significantly increased mung bean yield and quality. The findings suggest that this dose was particularly effective, and future research could explore higher doses to optimize humic acid levels for further enhancing mung bean production.