Effect of different levels of nitrogen and potassium on soil and plant nutrient analysis of sweet corn

Abstract

A field investigation on “Effect of different levels of nitrogen and potassium on available nutrients, nutrient contents, dry matter per plant and nutrient uptake of sweet corn (Zea mays (L).var.Saccharata)” was carried out at Instructional Farm, Department of Vegetable Science, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (MS) during summer season of year 2018-19. The experiment was laid out in Factorial Randomized Block Design having fifteen (15) treatment combinations and three (3) replications. Among the two factors studied, the factor A i.e. nitrogen (N) was applied in five different levels i.e. N1 (150 kg ha-1), N2 (175 kg ha-1), N3 (200 kg ha-1), N4 (225 kg ha-1) and N5 (250 kg ha-1). While, another factor B i.e. potassium (K) was applied in 3 different levels such as K1 (60 kg ha-1), K2 (80 kg ha-1), K3 (100 kg ha-1). Available nutrients (NPK), plant nutrient content (NPK), dry matter per plant and also plant nutrient uptake (NPK) were found maximum at nitrogen level N5 (250 kg ha-1), potassium level K3 (100 kg ha-1) and treatment combination N5K3 (250 kg N + 100 kg K2O ha-1).