Studies On Foliar Application Of Potassium Nitrate And Thio Urea On Morpho Physiological Biochemical And Yield Potential In Different Cultivars Of Wheat Under

Abstract

The field experiments were conducted at Student Instructional Farm of CSAUAT Kanpur, during Rabi 2016-17 and 2017-18. The objective of investigation was to study the effect on foliar application of potassium nitrate and thio-urea with different doses on plant traits (morphological, physiological, phenological, biochemical, yield and its components) of two wheat varieties under drought and irrigated condition. It was designed in double-split plot design with three replications. The two conditions i.e., drought (I0) and irrigated (I1) conditions were allocated in the main plots and two wheat varieties i.e., V1 (K-1006) and V2 (K-307) in sub plot and for each five chemical treatments were applied as foliar spray at heading stages by 0.5% potassium nitrate (T1), 1.0% potassium nitrate (T2), 500 ppm (T3) and 1000 ppm thio-urea (T4), along with control (T0) in sub-sub plots. The significantly higher grain yield (5.84 and 5.88 g) with morpho-physiological, phenological and biochemical traits can be obtained by foliar application of 0.5% potassium nitrate (T1) with both conditions of i.e., drought (I0) and irrigated (I1) of wheat crop. In this were represent 0.5% potassium nitrate (T1) i.e., 5.31 and 5.27 g, 1.0% potassium nitrate (T2) i.e., 5.05 and 5.03 g, 500 ppm thio-urea (T3) i.e., 4.84 and 4.80 g, 1000 ppm thio-urea (T4) i.e., 4.73 and 4.69 g as compare to control (T0) i.e., 4.39 and 4.35 g. In cultivars, maximum responsive was K-1006 (V1) in most of traits and gave significantly higher grain yield (5.88 and 5.84 g) and minimum in K-307 (V2) i.e., 5.80 and 5.54 g with both concerning experimental years newline