In recent years, the occurrence of soybean field pests has increased significantly. To effectively manage these issues, the following prevention and control measures are recommended:
During the adult worm stage, it is advisable to spray 90% trichlorfon crystals diluted at 1000 times or 2.5% deltamethrin emulsion diluted at 2000 times on soybean crops and their pods. During the critical growth period of soybeans, applying 5% insecticide per acre can provide long-lasting protection. This method ensures strong contact with pests and effectively prevents damage from earthworms throughout the entire growing season. If the soybeans are being sown, the insecticide can be applied before planting.
In late July, when the pests are still small and less resistant, it is an ideal time for treatment. Apply 5 kg of 3% phoxim granules or 1.5 kg of 14% Le Sibu granules mixed with 50 kg of fine soil and spread around the rhizosphere of the soybean plants. Lightly till the soil or water after application for better absorption.
If no preventive measures were taken earlier, and in late August, scattered damaged plants are observed, immediate action is necessary. Use 90% trichlorfon or 50% phoxim EC diluted between 800 to 1000 times, and apply it directly to the base of the bean plants using a liquid fertilizer system. Drilling holes in the soil and injecting the solution can greatly enhance the effectiveness of pest control.
By following these steps, farmers can ensure healthier soybean crops and reduce losses caused by pests. It's important to monitor fields regularly and act promptly when signs of infestation appear. Proper timing and correct application methods are key to successful pest management in soybean cultivation.
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