The mung bean (Vigna radiate) productivity affected by water deficit and plant density

Food production worldwide is affected by periodical water availability. Improving crop yield under water deficit conditions is the goal of agricultural researchers worldwide. Accordingly, a field experiment was carried out as a split-plot design based on randomized complete block arrangement with three replications to determine the possible impacts of different levels of water deficit (I۱, I۲, I۳, and I۴: irrigation after ۷۰, ۱۰۰, ۱۳۰, and ۱۶۰ mm evaporation from class A pan, respectively) and plant densities (D۱, D۲, and D۳: ۳۰, ۵۰ and ۷۰ plants/m۲, respectively) on yield and yield component of mung bean (Vigna radiata). The number of pods and grains per plant, grain weight, plant biomass, grain yield, and harvest index were reduced by enhancing water deficiency, but the irrigation intervals did not change the grains per pod. In all irrigation intervals, the D۲ produced the greatest plant biomass and grain yield per unit area, compared to other planting densities. However, the highest number of grains per plant and grain weight were observed under D۱ planting densities. The highest percentages of harvest index were attained under D۱ and D۲ planting densities. Our results showed that average across irrigation intervals, the highest productivity of mung bean crops was achieved under ۵۰ plants per m۲.

Keywords:

Mung bean , Planting densities , Water deficit , Grain yield