Abstract:
The field experiment was conducted during kharif season of 2016-17 and 2017-18 to find
the influence of potassium fertilization on different growth and yield parameters of rice
along with soil potassium pool. The experiment was laid out in Randomized Block Design
with treatments comprised of different doses of potassium viz. 15, 30, 45, 60, 90, 120
kg/ha and a control plot without any fertilizer and it was replicated thrice. The experiment
revealed that the plant growth parameters viz. plant height, number of active tillers per
plant, test weight and yield were significantly increased with application of potassium
fertilizer. With application of potassium fertilizer, plant parameters such as plant height, no
of active tillers, test weight and yield of rice increased significantly. Pooled data of both
the years suggested that, water soluble, exchangeable, available and HNO3 soluble
potassium increased at all three stages, as fertilizer dose increased. The exchangeable
potassium in control plot showed a decreasing trend with time.
