Response of yield and yield components of wheat towards foliar spray of nitrogen, potassium and zinc

摘要

An experimental trail was designed to quantify the response of yield and yield component of wheat toward foliar spray of nitrogen, potassium and zinc. The experiment was conducted at Agricultural Research Farm of Khyber Pakhtunkhwa Agricultural University Peshawar during 2002-2003. Yield and yield component of wheat showed significant response towards foliar spray of Nitrogen, Potassium and Zinc. Maximum biological yield (8999 kg ha^-1), number of grains (52) spike^-1 and straw yield (6074 kg ha^-1 ) were produced in plots under the effect of foliar spray of 0.5% N + 0.5% K + 0.5% Zn solution (once), while control (no spray) plots produced minimum biological yield (5447 kg ha^-1), number of grains (29) spike^-1 and straw yield (3997 kg ha^-1). Similarly maximum thousand grain weight (46 g) and grain yield (2950 kg ha^-1) were recorded in plots sprayed with 0.5% N + 0.5% K + 0.5% Zn solution (twice), followed by lowest values (36 g) and (1450 kg ha^-1) in plots having no spray (control). Among the treatment of 0.5% N + 0.5% K + 0.5% Zn solution applied either one or two times, gave best response towards yield and yield components of wheat in irrigated area of Peshawar valley.