Effect of growth and yield of maize (Zea mays L.) by optimization of nitrogen through organic and inorganic sources cropunder climatic conditions of Punjab
Gurmanpreet Singh Sodhi and Kamalesh Kumar
Experiment was conducted during zaid season of 2020-21 at the Agricultural Research Farm Dhablan of the G.S.S.D.G.S. Khalsa College Patiala, Punjab. Field experiment was laid out in spilt plot design with 16 different treatments with 3 replications, combination of organic and in –organic fertilizer levels. The soil of experimental field was clay in texture with pH 7.6 and organic carbon 0.58%, available nitrogen 184.4 kg ha-1, available phosphorus 19.10 kg ha-1 and available K 144.9 kg ha-1. Different levels of nitrogen also influenced the plant height at 30, 60 and 90 days. Plant height frequently increases with increase in nitrogen levels during all stages of crop growth. Maximum plant height, number of leaves and dry weight with nitrogen application @ 125% ha-1 whereas the lower plant height, number of leaves and dry weight found over the control treatment (N0). Increase in height, number of leaves and dry weight might be due to positive effect of nitrogen on the growth of the plant which leads to rapid increase in length of internodes and plant height, number of leaves and dry weight. Maximum biological yield among all the nitrogen level, 217.91 q ha-1 data were recorded with N125% application which is significantly higher over the control (175.31 q ha-1). Grain yield increased with FYM20 application over the control which was 73.97 q ha-1. High level of nitrogen increased the grain yield which was near about 72.97 q ha-1 Similarly maximum harvest index (37.07%) was found at highest nitrogen level of N0while the minimum harvest index (33.43%) seen in control treated plots.
Gurmanpreet Singh Sodhi, Kamalesh Kumar. Effect of growth and yield of maize (Zea mays L.) by optimization of nitrogen through organic and inorganic sources cropunder climatic conditions of Punjab. J Med Plants Stud 2023;11(6):70-72.