EFFECT OF POTASSIUM ON YIELD AND YIELD COMPONENTS OF BLACK GRAM

The investigation into the effect of varying levels of potash application on the yield and quality characteristics of black gram (cv. Mash 88) were carried out on a sandy loam soil having 0.05% N, 8 and 130 ppm P20S and K20, respectively. A uniform dose of 25 and 75 kg Nand P20S ha-I was used in all the treatments. The varying levels of potash were 0, 25, 50, 75, 100 and 125 kg K20 ha-I. The whole quantity of N, P and K in the form of urea, single super phosphate and potassium sulphate, respectively was side drilled just after seeding. The results revealed that application of 75 kg K20 in addition to 25 and 75 kg Nand P20S ha-! showed a significant increase in yield and improved seed protein contents of mashbean.