Effect of zinc and thiourea application on growth, yield and nutrient uptake 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 floweringinitiation (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 growth and yield attributing characters of greengram viz., plant height, branches/plant and dry matter accumulation at most of stages, chlorophyll content, LAI, number an weight of nodules/plant, number of pods/plant, number of grains/pod, test weight, maximum yield, higher uptake of N, P and Zn over preceding levels. Foliar spray of thiourea (500 ppm) was foun significantly superior among all the treatments with respect to growth and yield determining characters, nutrient concentration and their uptake in greengram.