D.S. Potdar, A.H. Patil, V.N. Nale and R.M. Pawar
Abstract
Yield and quality of groundnut (Arachis hypogaea L.) as influenced by soil and foliar spray of micronutrients in calcareous soil was assessed by conducting field experiment during summer, 2022 at PG Research Farm, RCSM College of Agriculture, Kolhapur. The experiment was laid out in randomized block design with ten treatments and three replications. Soil application of 20 kg FeSO4.7H2O + 15 kg ZnSO4.7H2O + 5 kg Borax ha-1 along with GRDF was found to be significantly superior for dry pod yield (36.54 q ha-1) and haulm yield (44.83 q ha-1) and it was at par with foliar application of FeSO4.7H2O + ZnSO4.7H2O + Boric acid @ 0.5% along with GRDF at peg and pod formation stage. The highest oil (48.92 %) and protein content (27.70 %) were noticed with soil application of 20 kg FeSO4.7H2O + 15 kg ZnSO4.7H2O + 5 kg Borax ha-1 along with GRDF. However, it was found to be significantly superior over rest of all other treatments except foliar application of FeSO4.7H2O + ZnSO4.7H2O + Boric acid @ 0.5% along with GRDF at peg and pod formation stage. The maximum uptake of N, P and K (189.03 kg ha-1, 29.32 kg ha-1 and 97.18 kg ha-1, respectively) was reported with soil application of 20 kg FeSO4.7H2O + 15 kg ZnSO4.7H2O + 5 kg Borax ha-1 along with GRDF. However, this was on par with combine foliar application of micronutrients. The treatment receiving combine soil application of micronutrients along with GRDF was found to be significantly superior for the total uptake of iron, zinc and boron (2998.58 mg ha-1, 367.87 mg ha-1 and 78.07 mg ha-1, respectively).