Weed control in water-saturated soybean cultivation in the coastal area
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Abstract
The study indicated that soybean growth and yield under water-saturated conditions did not significantly differ among various weed control periods or weeding frequencies. Soybeans weeded twice or three times grew similarly to those weeded once. During the study, soybean growth was inhibited even after weed control, indicating faster weed growth compared to soybeans. At 2, 3, and 4 weeks after planting, the predominant weed species was Fimbristylis miliacea, followed by Ludwigia octovalvis and Cyperus sphacelatus R. By harvest time, the experimental site was dominated by Cyperus halpan, F. miliacea, Fimbristylis ciliaris, and C. sphacelatus with SDR (Summed Dominance Ratio) values of 25.45%, 24.86%, 13.88%, and 11.67%, respectively. These findings are crucial for managing weeds in soybean cultivation under water-saturated emvironment.
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