YIELD PERFORMANCE OF MUNGBEAN IN DIFERRENT LIGHT LEVEL A Thesis By Md. Hafizur Rahman

Abstract

A field experiment was carried out at the Research Field of Department of Crop Physiology and Ecology, Hajee Mohammad Danesh Science and Technology University, Dinajpur during the period from April 20, 2015 to June 30, 2015 to evaluate the three mungbean varieties in regard to morpho-physiological parameters, yield and yield contributing characteristics under different light levels. The experiment was laid out in a split plot design with three replications. Three light levels i.e. 100, 75 and 50 percent of full sunlight were assigned in the main plot while three mungbean varieties (BINA mung 5, BINA mung 8 and BARI mung 6) were assigned in the sub-plot. Light levels were adjust using mosquito nets of different mesh sizes and color. Different light levels had a significant effect on morpho-physiological characteristics like plant height, number of leaves, leaf area, chlorophyll content, dry weight of leaf, stem and root of different days after sowing (DAS) of different mungbean varieties. In case of yield and yield contributing characteristics like number of pods per plant, number of seeds per pod, thousand grain weight and yield of different mungbean varieties found higher at 100 percent of full sunlight compare to 75 and 50 percent of full sunlight. Among the three varieties, BARI Mung 6 showed lesser reduction in pods per plant, number of seed per pod, thousand grain weight and yield both at 75 and 50 percent of full sunlight and this variety may be used as tolerant variety under partial shade condition.