Vol. 11, Issue 5 (2022)

Author(s):
Venkatagiri Sireesha and Joy Dawson

Abstract:
A field experiment entitled “Effect of Potassium and Magnesium on growth and yield of Groundnut (Arachis hypogaea L.) was conducted during kharif season, 2021 at Crop Research Farm, Department of Agronomy, SHUATS, Prayagraj (UP). The soil of the experimental plot was sandy loam in texture, nearly neutral in soil reaction (pH 7.4), low in organic carbon (0.147%), available N (171.48 Kg/ha), available P (10.3 Kg/ha) and available K (213.7 Kg/ha). The experiment was laid out in Randomized Block Design comprised of 3 replications and total 9 treatments viz. T1: 40 kg/ha Potassium + 10 kg/ha Magnesium, T2: 40 kg/ha Potassium + 15 kg/ha Magnesium, T3: 40 kg/ha Potassium + 20 kg/ha Magnesium, T4: 50 kg/ha Potassium + 10 kg/ha Magnesium, T5: 50 kg/ha Potassium + 15 kg/ha Magnesium, T6: 50 kg/ha Potassium + 20 kg/ha Magnesium, T7: 60 kg/ha Potassium + 10 kg/ha Magnesium, T8: 60 kg/ha Potassium + 15 kg/ha Magnesium, T9: 60 kg/ha Potassium + 20 kg/ha Magnesium. Results obtained that there was significant increase in growth attributes viz., Plant height (44.20 cm), Nodules/pod (80.30), Dry weight (41.64 g/plant);Crop growth rate (7.07 g/m 2 /day), Relative growth rate (0.0035 g/g/day) are non- significant and Yield attributes viz., Pods/plant (25.80), Kernels/pod (2.4), Seed index (46.27 g), Seed yield (2.48 kg/ha), Haulm yield (5.51 t/ha), Harvest index (31.07%) were recorded with the application of 60 kg/ha Potassium+20 kg/ha Magnesium. Therefore, it is concluded that the application of 60 kg/ha Potassium +20 kg/ha Magnesium was recorded higher growth and yield of Groundnut.