Effect of different levels of nitrogen and potassium on fodder maize (Zea mays L.) productivity under irrigated condition in coastal Karnataka during late rabi season

A field experiment entitled “Effect of different levels of Nitrogen and Potassium on Fodder maize (Zea mays L.) productivity under Irrigated Condition in Coastal Karnataka during late rabi Season” was conducted during late rabi 2023 at Zonal Agricultural and Horticultural Research Station (ZAHRS) Brahmavara, Udupi. The results of the experiment showed that, among different nitrogen levels, application of 150 per cent recorded significant higher plant height (316.07 cm), number of leaves (15.94 plant-1), leaf area (4636.98 cm2), dry matter accumulation (131.29 g plant-1), stem girth (8.53 cm), green fodder yield (438.03 q ha-1) net returns (45,457 ₹ ha-1) and B: C ratio (2.07). However, it was on par with 125 per cent of nitrogen application. Among different potassium levels, the application of 150 per cent of potassium has recorded the higher plant height (295.26 cm), number of leaves (15.30 plant-1), leaf area (4645.87 cm2), dry matter accumulation (123.12 g plant-1), stem girth (8.28 cm), green fodder yield (420.74 q ha-1), net returns (42,103) and B: C ratio (2.00) over 125 per cent and 100 per cent potassium application.