Improving Rice Yield through Potassium Fertilization in Coastal Region of Bangladesh

Abstract

Potassium (K) is required for the activity of many enzymes, including those of energy metabolism, protein synthesis, and solute transport in rice plants. But lack of K restricts the establishment, development, and yield of crops. To solve these problems, an experiment was conducted in southern coastal soil of Bangladesh.The experiment consisted of seven treatments such as T₁ : Control (No K fertilizer), T₂ : 40 kg ha^-1 K dose from MoP at final land preparation, T₃ : 50 kg ha^-1 K dose from MoP at final land preparation, T₄ : 60 kg ha^-1 K dose from MoP at final land preparation, T₅ : 40 kg ha^-1 K dose from MoP in two equal splits at final land preparation and 30 days after transplanting, T₆ : 50 kg ha^-1 K dose from MoP in two equal splits at final land preparation and 30 days after transplanting, T₇ : 60 kg ha^-1 K dose from MoP in two equal splits at final land preparation and 30 days after transplanting. BRRI dhan75 was used as test crop in this experiment. The results of the experiment revealed that the plant height, filled grain, grain and straw yield of BRRI dhan75 rice were significantly increased by the application of potassium fertilizer. The application of potassium fertilizer increased K, S and P uptake whereas decreased Na uptake in rice. The K and Na ratio was also increased by the application of potassium fertilizer. The results of the experiment also revealed that the higher amount of grain (4.43 t ha-1) and straw (4.68 t ha-1) yield as well as nutrient uptake of rice was observed in T7 treatment among all the tested treatments. The K/Na ratio was also found to be higher in T7 treatment. Therefore, the present study suggests that the rice production could be improved through split application of higher doses of potassium fertilizer in coastal region of Bangladesh.

Cite as:

Md. Shahin Hossin. (2024). Improving Rice Yield through Potassium Fertilization in Coastal Region of Bangladesh. Research and Reviews: Journal of Environmental Sciences, 6(2), 41–48. https://doi.org/10.5281/zenodo.10986220