Influence of foliar application of nutrients on biochemical parameters in greengram (vigna Radiate l. wilczek.)

A field experiment was conducted during the kharif season of 2014 at Main Agriculture Research Station (MARS), University of Agriculture Sciences, Dharwad (Karnataka) to study the influence of foliar application of nutrients on morpho-physiological traits, yield and yield components in greengram. Nine treatments comprising of KNO3 (0.1 %), MnSO4 (0.3 %), ZnSO4 (0.5 %), KNO3 (1.0 %) + MnSO4 (0.3 %), KNO3 (1.0 %) + ZnSO4 (0.5 %), MnSO4 (0.3 %) + ZnSO4   (0.5 %), KNO3 (1.0 %) + MnSO4 (0.3 %) + ZnSO4 (0.5 %), Propiconazole (0.1 %) and Control (unsprayed) were laid out in randomized completely block design(RCBD) with three replications. Foliar application was done at two stages 35 and 50 days after sowing (DAS). Among these treatments, KNO3 (1.0 %) + MnSO4 (0.3 %) + ZnSO4 (0.5 %) recorded increased chlorophyll, phenol content and peroxidase activity. The seed yield parameters like number of pods per plant, number of seeds per pod, seed yield per plant, seed yield per hectare and also harvest index were found significantly maximum over the control by the foliar application of KNO3 (1.0 %) + MnSO4 (0.3 %) + ZnSO4 (0.5 %) and was on par with other treatments.