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Research Journal of Agronomy
Year: 2008  |  Volume: 2  |  Issue: 3  |  Page No.: 82 - 86

Effect of Spraying S-3307 on Yield, Dry Matter Accumulation and Distribution of Relay-Planting Soybean

Yan Yan-Hong, Yang Wen-Yu, Wan Yan and Yang Xiao-Li    

Abstract: Relay-planting soybean pattern is dominant in Southern China. However, the soybean grow flourishing easily below corn, so its yield is lower. S-3307 is a new kind of plant growth retardants, which is used in controlling flourishing growth and improving crop yield such as wheat, rice and so on. The purpose of this experiment was to explore the effect of spraying different concentrations of S-3307 at branching and first bloom stage on soybean yield, dry matter accumulation and distribution. The results showed as follows. Spraying S-3307 at branching stage could significantly influent yield and the concentration of 30, 60, 90 mg kg 1 was significantly higher than the contrast by 21.26, 7.64 and 5.32% separately and the effect of spraying S-3307 at first bloom was not significant. Spraying S-3307 at branching stage could significantly influent dry matter accumulation and the concentration of 30 mg kg 1 was higher than the contrast by 16.43% at maturing stage. Spraying S-3307 at branching stage could significantly increase the ratio of dry leaf weight and dry pod weight, while the ratio of dry stem weight was lower than the contrast at maturing stage. These indicated that spraying the lower concentration of S-3307 was propitious to dry matter accumulation, transferring to the pod and increasing the yield.

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