International Journal of Chemical Studies
Vol. 6, Issue 2 (2018)
An overview on the significance of sowing dates and nitrogen fertilization on growth and yield of rice
Author(s): Sheeraz Ahmad Wani, Mohammad Amin Bhat and Mohammad Anwar Bhat
Abstract: The impact of sowing dates and proper fertilization particularly nitrogen (N) on rice cultivation assumes pivotal significance. The dates of sowing and nitrogen fertilization have remained unequivocally the most important agronomic factors for obtaining optimum rice yields and will assume much higher importance under changing climatic conditions. Sowing time is a major factor in rice cultivation and indirectly determines soil temperature and weather conditions to which young seedlings and rice plants are exposed during different development stages. Moreover, an optimum sowing date in a particular ecological setting enables accumulation of desired growing degree days necessary for proper growth and development of rice crop. The optimum transplanting date is different in different agro-ecological settings. Under the temperate climatic conditions where crop growing season is generally short and sharp decline in temperature is noticed later in the season which is detrimental for crop growth, planting time assumes much greater importance. Similarly, optimum levels of nitrogen fertilization form an important aspect of overall fertilizer management in rice for its efficient utilization and higher productivity. Nitrogen fertilizer is a key input for rice production. Excess amount of N application can result in lodging of plant, greater susceptibility to pest infestation and reduction of yield. On the contrary, below optimum doses of N may affect different aspects of rice growth and will lead to stunted crop growth and lower yield, so judicious application of N is significant for obtaining optimum rice yields.
Pages: 2640-2655 | 356 Views 21 Downloads
How to cite this article:
Sheeraz Ahmad Wani, Mohammad Amin Bhat, Mohammad Anwar Bhat. An overview on the significance of sowing dates and nitrogen fertilization on growth and yield of rice. Int J Chem Stud 2018;6(2):2640-2655.