Vol. 12, Issue 4 (2023)

Author(s):
Lanamika Kjam, AK Singh, Wanphrang Kharkongor, Mercy Vanlalhmangaihi and Seyiekevino Tsukru

Abstract:
An experiment in the field was conducted in 2018 during the Kharif season at the Experimental Farm of School of Agricultural Sciences and Rural Development, Nagaland University, Medziphema to investigate the effect of potassium on the performance of soybean (Glycine max L. Merrill) varieties. The experiment was conducted in a Factorial Randomized Block Design (RBD) consisting of five levels of potassium (0, 20, 40, 60 kg ha^-1 and 40 kg ha^-1 + foliar application at pod initiation stage @ 0.5% MOP) and two soybean varieties (JS 97-52 and DSB 32) having three replications. Potassium application resulted in a considerable increase in plant height, number of pods plant^-1, and number of filled pods plant^-1. The addition of potassium improved the oil content, protein content, seed yield, and stover output. The effect of potassium on seed nutrient content was found to be significant. Except for nitrogen, the effect of potassium on nutrient availability had also been observed to be significant. The increased potassium application, increased the nutrient uptake substantially. Based on these findings, 60 kg K2O ha^-1 is recommended for soybean varieties (JS 97-52 and DSB 32) in Nagaland's foothills and other places with similar edaphic environments.