Abstract

The present experiment has been carried out at the research farm at Bagusala under M. S. Swaminathan School of Agriculture, Centurion University of Technology and Management, Odisha during the year 2021 to find out the response of summer Maize (Zea mays L.) to different doses of Nitrogen and Potassium. The experiment was laid out with total number of nine treatments, viz. T1:80 kg N + 0 kg K /ha, T2:100 kg N + 0 kg K /ha, T3: 120 kg N + 0 kg K /ha, T4 :80 kg N + 50 kg K /ha, T5: 100 kg N + 50 kg K /ha, T6 :120 kg N + 50 kg K /ha, T7 :80 kg N + 80 kg K /ha, T8:100 kg N + 80 kg K /ha and T9:120 kg N + 80 kg K /ha. The treatments were laid out in Randomized Block Design with three replications. The results revealed that highest plant height (203 cm), number of leaves (19.8), more dry matter accumulation (1638.5 g/m2) at harvest stage, higher leaf area index (5.4), grain yield (6384 kg/ha), stover yield (8346 kg/ha), biological yield (14730 kg/ ha), harvest index (43.2%) was obtained from treatment 120 kg N + 80 kg K /ha and it was followed by 120 kg N + 50 kg K /ha, 100 kg N + 80 kg K /ha, 100 kg N + 50 kg K /ha, 8sss0 kg N + 80 kg K /ha at different growth stages. For expression of growth parameters, yield attributes and yield application of 120 kg N + 80 kg K /ha (T9) proved its superiority over other treatments.