Effect of potassium on yield and storage quality of two process potato varieties

Abstract

ABSTRACT : From two years field trial, it was found that highest tuber yield was observed in Asterix (36.4 ton/ha) from 200 kg K20 application and Felsina (27.5 ton/ha) from 150 kg K20 application. From the regression curve, it was estimated that the optimum K20 doses were 192 kg/ha (for Asterix) and 181.5 kg/ha (for Felsina) which maximizes the yield, were 35 and 28 ton/ha, respectively. In case of dry matter, it was observed that both the variety Asterix (21.8 %) and Felsina (22.2 %) were produced from 200 kg-K20/ha was used and further increase of fertilizer dose dry matter decreased. However, the optimum K20 doses for Asterix and Felsina were 175 and 179 kg/ha and the estimated dry matter were 20.83% and 22.3%, respectively. K20 also increased the seed size potato production upto a certain limit. In normal storage condition, increase in K20 application decreased the cumulative weight loss.