Effect of Sulphur Fertilization on Leg-Haemoglobin and Carboxylase Content at Different Growth Stages of Mungbean (Vigna radiata(L.) Wilczek

Abstract

An investigation was carried out on mungbean at crop research centre of S.V.P. University of Agriculture and Technology Meerut Uttar Pradesh during spring season 2010. Field experiment was conducted consisting 17 treatments combination and laid out in randomized block design (RBD) with 3 replications on mungbean variety SML-668 which showed a significant variations among themselves in the the Leg-haemoglobin content of nodules, which was highest during the 30 DAS, and decreased during 40 DAS, 50 DAS and was minimum at harvest stage in all the treatments. Improved fertilization of sulphur through various treatments increased the Leg – haemoglobin content of nodules significantly over T17 (control) treatment. Variety SML-668 showed significant variations among themselves in the activity of RuBP case at vegetative, early pod setting and active pod filling stage. The magnitude of enzyme activity was in the range of 33.21 to 9.71 mg CO2 dm−2 hr−1 during vegetative stage, in treatment T15 (23.18) as compared to T17 control (9.71). During early pod setting (33.21) and during active pod filling stage (27.42).