Response of iron and zinc application on growth, yield and nutrient uptake by groundnut
Author(s): KV Rabari, JM Patel and DL Sundesha
Abstract: Groundnut cultivation covers around 108 countries in world due to its economic and nutritional importance consisting 20 to 25% protein, 45 to 50 percent oil, 5 percent fiber and ash and 20 percent carbohydrate and attains third position in vegetable protein source for human consumption. Now a day’s yellowing and interveinal chlorosis is main problem in cultivation of groundnut due to deficiencies of iron and zinc in the soil. Soil application and foliar application of micronutrient shows beneficial effect on crop yield and soil fertility status. An experiment was conducted at Agricultural Research Station, Sardarkrushinagar Dantiwada Agricultural University, Aseda, Gujarat during three kharif season of years 2020, 2021 and 2022. Groundnut variety GG 20 (Gujarat Groundnut 20) was sown at second fort night of June of every season of the consecutive three years with line sowing method in randomized block design with ten treatments. Effect of different treatment on plant height at 30, 60, 90 DAS and at harvest remained un affected in all three years as well as on pooled results. Soil application of application of FeSO4 @ 15 kg/ha + ZnSO4 @ 8 kg/ha (T7) recorded significantly higher number of pods per plant, pod yield (2734 kg/ha), while T3: ZnSO4 @ 8 kg/ha recorded higher haulm yield (4290 kg/ha) but remained statistically at par with treatment T7. Significantly higher uptake of total nitrogen, phosphorus and potassium, were recorded under the treatment T7: FeSO4 @ 15 kg/ha + ZnSO4 @ 8 kg/ha and remained at par with the treatments T3 and T9. higher total nutrient uptake during all the season well as on pooled basis, however it remained statistically at par with the treatments T10 on pooled of three years. The total uptake of Zn was recorded significantly higher in the treatment T3, T7, T9 and T3 in year 2020, 2021, 2022 and pooled year respectively.
