The Effect of Zinc and Abscisic Acid on the Growth of Mung Bean Plant Affected by Moisture Tension

Abstract

An experiment was carried out in Diyala governorate, Al-Muqdadiya district, Al-Wajihiya sub-district during the autumn season of 2020 to study the effect of moisture tension, the levels of zinc and abscisic acid on the yield of the mung bean plant. The study included three rates of zinc (0, 100, 200) mg. L -1 and three levels of abscisic acid (0, 5, 10) mg. L-1 and the plant was irrigated every four days (W1) and eight days (W2). An experiment was applied according to the Split-Split Plot- Design and with a randomized complete block arrangement (RCBD) with three replications. The zinc treatments of 100 and 200 mg.L-1 were higher than control treatment in the number of flowers and weight of 100 seeds, whereas 200 mg.L-1 was higher than 100 mg.L-1 and control treatment in terms of number of pods, number of seeds per pod, and seed yield. The treatments of abscisic acid at 5 and 10 mg.L-1 were higher than control treatment in terms of number of flowers and seeds per pod. The treatment of 5 mg. L-1 was higher than 10 mg. L-1 and control treatment in terms of the weight of 100 seeds and plant yield. On the other hand, treatment of 10 mg. L-1 was higher than 5 mg. L-1 and control treatment in the number of pods. The moisture tension (W2) led to a decrease in the yield properties compared to the moisture tension (W1). The level of interaction (W1+ 100 mg Zn.L-1 + 5 mg abscisic acid .L-1) was the highest in terms of number of flowers and pods, and weight of 100 seeds. For number of seeds in each pod, the level of interactions (W1+ 100 mg Zn.L-1 + 10 mg abscisic acid .L-1) and (W1+ 200 mg Zn.L-1 + 10 mg abscisic acid .L-1) were the highest.