Effect of foliar feeding of 19:19:19 and potassium nitrate water soluble fertilizers on major nutrient status of soybean in a vertisol

Abstract

A field experiment was conducted at University of Agricultural Sciences, Dharwad on medium black soil during kharif season of 2015 to study the effect of foliar feeding of 19:19:19 and potassium nitrate water soluble fertilizers on major nutrient status of soybean in a Vertisol. Among different treatments, two foliar sprays of 1.0 per cent 19:19:19 recorded significantly higher uptake of nitrogen (196.80 kg ha-1), phosphorus (29.77 kg ha-1), potassium (96.87 kg ha-1) and Sulphur (31.69 kg ha-1). This was closely followed by treatment which received urea (1 %) and KNO3 (2 %) and one spray of 19:19:19 (1 %) at 60 DAS (26.84 and 35.41 q ha-1, respectively). Lower uptake values were recorded in control.