- Eurasian Journal of Soil Science
- Vol: 12 Issue: 2
- Yield response of rice (Oryza sativa L.) to elevated potassium applied under the irrigated ecosystem...
Yield response of rice (Oryza sativa L.) to elevated potassium applied under the irrigated ecosystem of Bangladesh
Authors : Md Zakir Hossain, Md Mahfuzur Rahman, Md Niaz Morshed, Md Eftekhar Uddin, Md Hasibur Rahaman Hera, Naznin Sultana, Md Abul Hashem
Pages : 104-110
Doi:10.18393/ejss.1198190
View : 14 | Download : 9
Publication Date : 2023-04-01
Article Type : Research
Abstract :A field experiment was conducted at Bangladesh Agricultural University farm, Mymensingh, Bangladesh, during the Boro season, 2017 with six different K fertilizer rates: 0, 10, 20, 30, 40 and 50 kg ha-1 to determine the optimum rate of potassium (K) fertilization for the improved yield of a specific rice variety in the irrigated ecosystem under floodplain area. Compared with no K fertilizer, adding K increased the rice grain and straw yields significantly, with all other yield contributing components, except 1000-grain weight. The highest yield of grain (7.07 ton ha-1) and straw (8.48 ton ha-1) were recorded in recommended fertilizer dose (RFD) of NPS + 50kg K treatment, which were statistically identical with RFD of NPS + 40 kg K. Rice grain and straw yields due to the different treatments increased by 18.65% to 53.74% and 18.67% to 53.78%, respectively over control. K content and uptake through grain and straw were significantly influenced by applying different levels of K. These results specified that the use of 40 kg K ha-1 had better performance on the grain and straw yields. Therefore, we conclude that the application of 40 kg K ha-1 along with the RFD of NPS for BRRI dhan29 cultivation is the best option for higher yield in Old Brahmaputra Floodplain soil.Keywords : Boro rice, floodplain, irrigated ecosystem, potassium, yield