Effect of irrigation deficit and super absorbent polymer on morphological characteristics and yield of green bean (Phaseolus vulgaris L.)
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
In order to study the effect of two factors of irrigation deficit (drought stress) and superabsorbent polymer application on morphological characteristics, plant yield and yield components of green bean, two experiments were conducted in a completely randomized design with factorial arrangement in greenhouse conditions in Educational- Research Greenhouse, Faculty of Agricultural, Mashhad Branch, Islamic Azad University, Mashhad, Iran during in cropping season 2017-2018. In both experiments: experimental factors were included, superabsorbent polymer in 4 levels (0, 3, 5 and 7 g per kg of soil) and irrigation deficit in 4 levels (20, 40, 60 and 80 % decrease of soil water weight based on Field Capacity). In the first experiment 3 and in the second experiment, 6 replications were considered. The results of analysis of variance showed that in the first experiment, effect of irrigation deficit, superabsorbent polymer and interaction between two factors had significant effect on the plant height, number of leaf, fresh and dry weight of plant, leaf area, number of pod per plant and fresh pod weight. In the second experiment, effect of irrigation deficit and superabsorbent polymer on number pod per plant, number of grain per pod, grain yield per plant and biomass were significant. But, in the second experiment, interaction between to factors had only significant effect on number of pod per plant, grain weight per plant and biomass. In both experiments, means comparison under the influence of irrigation deficit and superabsorbent polymer showed that with decreasing of 40% moisture from field capacity, all traits were decreased. In general, the results of this study showed that application of superabsorbent polymer caused of decreases the negative effects of drought stress.
Keywords:
Language:
Persian
Published:
Iranian Journal of Irrigation & Drainage, Volume:14 Issue: 1, 2020
Pages:
241 to 250
https://www.magiran.com/p2133404
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