Impact of Different Potassium (K) Application on Seed Protein Content of Brassica under Different Levels of Irrigation in Field Condition

Abstract

Pakistan is confronting a chronic scarcity of domestic edible oil requirements. One of the major issues with brassica oil seed production is the water requirement of the brassica crop. Field experiments were laid out in randomized complete block design (RCBD) with split plot arrangements at Malakandher Research Farm Khyber Pakhtunkhwa Agricultural University Peshawar Pakistan to study the effect of different levels of irrigation and potassium on seed protein content of Brassica. Four varieties Wester, Rainbow, Oscar and Legend were selected on the basis of their good response to potassium application in water stress conditions. The data revealed that maximum seed protein content (21.98%) was observed in those treatments where 100% irrigation level was applied and minimum seed protein content (19.37%) was produced by plants where 60% irrigation level was applied. Maximum seed protein content (21%) was in plants treated with 120 kg K ha^-1 and minimum seed protein content (20.14%) with 60 kg K ha^-1. The interaction between I x K showed maximum seed protein content (22.43%) in those plants treated with 100% irrigation level and 120 kg K ha^-1 and minimum seed protein content (19.14%) was observed with 60 kg K ha^-1 and 60% irrigation level. Maximum seed protein content (22.77%) was produced by variety Wester (V1) at 100% irrigation level and 120 kg K ha^-1 while minimum seed protein content (18.80%) was given by variety Oscar (V3) when treated with 60 kg K ha^-1 and 60% irrigation level.

Keywords: Brassica, Oil Seed, Seed Protein, Variety, Irrigation, Potassium.