Effect Of Different Rates Of Superabsorbent Polymer (Tarawat A200) On Soybean Yield And Yield Components (Glycine Max L)
2007
Yazdani, F., Master of Science in Agronomy, University College Aboureihan, Tehran University | Allahdadi, I., Associate Professor of University College Aboureihan, Tehran University | Akbari, G. A., Associate Professor of University College Aboureihan, Tehran University | Behbahani, M. R., Associate Professor of University College Aboureihan, Tehran University
Drought stress is a major constraint for crop production in arid and semiarid regions, such as Iran. Application of some soil conditioners, like superabsorbent polymers, could be effective for absorbing seasonal rain and suitable source of water for plant growth during dry seasons. The aim of the present study was to evaluate of the effect of four rates of superabsorbent polymer (0, 75, 150 and 225 kg /ha) and three irrigation regimes (6, 8 and 10 days) on growth, yield and yield components of soybean (cult. L11) under field conditions. The results of this study showed that there were significant differences among irrigation regimes on seed yield, 100-grain weight, number of pods per main-branch, number of pods per sub-branch, number of secondary branch per plant, plant height and seed protein content. Moreover, the high rates of superabsorbent polymer (225 kg/ha) increased seed yield, 100-grain weight, number of pod per main branch, oil and protein yield and seed protein content compared to the control (zero polymer) and the lowest rate of polymer (75 kg/ha). These results indicated that high amounts of superabsorbent polymer had positive effects on yield and yield components of soybean even under drought-stress conditions.
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