Response of Crop Establishment Methods and Split Application Nitrogen on Productivity of Rice under Irrigated Ecosystem

摘要

A field experiment was carried out during the kharif season to compare the effect of crop establishment methods and split application of nitrogen on production potential of rice under trigated ecosystem. The treatment was comprised methods of crop establishment i.e. transplanting of seedlings, drum seedling of sprouted seed and direct seeding (broadcast) of sprouted seed in main plot and four split application of nitrogen i.e. V basal + V PI stage, 7, basal + 74 maximum tillering + V PI stage, 7, basal + 73 maximum tillering + V3 PI stage and V4 basal + 74 maximum tillering + 74PI stage + 74 flowering stage in sub-plot and replicated in thrice. Results revealed that all the growth parameter viz. plant height, dry weight,crop growth rate and relative growth rate was found to significantly superior with transplanting of seedlings as compared to others methods of crop establishment. Further, the grain yield (6.101 ha~(-1)) was also found to be significantly higher with transplanting of seedlings as compare to drum seedling of sprouted seed (5.87 t ha~(-1)) and direct seeding (broadcast) of sprouted seed (5.401 ha~(-1)). With respect to split application of nitrogen, it was noted that the significantly higher growth and yield attributes was recorded with application of V. basal + V4 maximum tillering+ V4 PI stage + V4 flowering.Therefore, it may be concluded that rice grown with transplanting the seedlings alone with split application of N i.e. V4 basal + V_4 maximum tillering + V4PI stage + V4 flowering was found to be the best alternatives to the rice growing.