Effect of zinc and thiourea application on yield attributes and Yield of greengram [Vigna radiata (L.) Wilczek]

Abstract

A field experiment was conducted at Agronomy farm, S.K.N. College of Agriculture, Jobner (Rajasthan) during kharif¸ 2016 on loamy sand soil. The experiment comprising four levels of zinc (0, 2.0, 4.0 and 6.0 kg/ha) and five treatments of thiourea application (control, seed soaking with 500 ppm, foliar spray at branching (500 ppm), foliar spray at flowering initiation (500 ppm) and foliar spray at branching and flowering initiation with 500 ppm) thereby making 20 treatment combinations was laid out in randomized block design and replicated thrice. Results showed that being at par with 6.0 kg/ha zinc fertilization at 4.0 kg/ha significantly increased the yield attributing characters of greengram viz., number of pods/plant, number of grains/pod, test weight, maximum seed, straw and biological yields over preceding levels. Foliar spray of thiourea (500 ppm) was found significantly superior among all the treatments with respect to yield determining characters, It produced the grain, straw and biological yields 1253, 2139 and 3392 kg/ha and thus increase these to the extent of 40.3, 35.3 and 37.2 per cent over control.