Investigating the effects of deficit irrigation and wheat stubble management on grain yield and morpho-physiological traits of mung bean (Vigna radiata L.) in Khorramabad region

In an attempt to investigate the effects of the levels of deficit irrigation and wheat stubble management on the agronomical and morpho-physiological traits of mung bean (Vigna radiate L.), an experiment was carried out in split-plot following a randomized complete block design with three replications during 2009. The main factor comprised deficit irrigation at three levels: the interrupted irrigation at the onset of podding (I1), the interrupted irrigation at the onset of flowering (I2), and the common irrigation (I3). The subplots included wheat stubble management at three levels: planting in stubble by zero tillage (M1), planting in burned stubble by zero tillage (M2), and planting by traditional tillage. The results indicated that the aforementioned treatments had significant effect on grain yield, plant height, the number of secondary branches, dry matter, and harvest index. Grain yield, the number of secondary branches, stem diameter, plant height, dry matter, and harvest index were higher in common irrigation in comparison to the other irrigation levels. Grain yield, the number of secondary branches, dry matter, and harvest index were also higher in traditional tillage compared to M1 and M2 treatments. The Mean comparison of the interaction effect of irrigation and stubble managements revealed that the highest and the lowest grain yield were produced by common irrigation with traditional tillage and the interrupted irrigation at the onset of flowering with planting in stubble, respectively.