Author(s)

Rafeza Begum^1*, Md. Safiqul Moula², Rakhi Rani Sarker³, Mahmudul Hasan Chowdhury⁴, Sheikh Yesin Ali⁵, Md. Kayes Mahmud⁶, Sharmin Akter⁷

¹Soil Resource Development Institute, Jamalpur, Bangladesh.
²Soil Resource Development Institute, Kushtia, Bangladesh.
³Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh.
⁴Soil Resource Development Institute, Rajshahi, Bangladesh.
⁵Nutrition Nestle Bangladesh PLC, Dhaka, Bangladesh.
⁶Soil Resource Development Institute, Patuakhali, Bangladesh.
⁷Soil Resource Development Institute, Dhaka, Bangladesh.

A pot culture experiment was conducted in the greenhouse of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh, using eleven soil series of Bangladesh in order to see the depletion behaviour of potassium (K) by continuous cropping using rice (var. Iratom-24) as the test crop. The soil series were Ranishankhail, Kaonia. Sonatala, Silmondi, Gopalpur, Ishurdi, Sara, Kongsha, Nunni, Lauta and Amnura on which four successive rice plants (45 days duration) were raised with (100 ppm K) or without addition of potassium. Nitrogen, phosphorus, sulfur and zinc were applied as basal to all pots. Potassium application resulted in higher dry matter yield, increased K concentration and uptake in all the soils compared with no K treatment, which gradually decreased in the subsequent harvests. Plant takes up K not only from exchangeable pool but also from non-exchangeable sites. A minimum replenishment of K from the soil reserve was observed. Continuous cropping has resulted in the depletion of available K of the soil. The result indicated that in order to sustain higher crop yield under intensive cultivation, the addition of potash fertilizer is necessary.

Potassium, Exchangeable Pool, Depletion Behavior

Begum, R., Moula, M.S., Sarker, R.R., Chowdhury, M.H., Ali, S.Y., Mahmud, M.K. and Akter, S. (2024) Potassium Depletion in Rice Cultivation: Insights from a Pot Culture Study in Bangladesh. Open Access Library Journal, 11, 1-10. doi: 10.4236/oalib.1112439.