First, agricultural control. Regularly cleaning the garden and timely cultivating the soil can help destroy the habitats of snails and their egg-laying sites, reducing the overall population. During fall and winter, deep plowing can bring eggs and overwintering adults to the surface, where they are exposed to sunlight or preyed upon by natural enemies. In areas with severe snail infestations, leaving a small patch of weeds during winter and spring or autumn plowing can attract snails, making it easier to remove them later.
Second, lime application. Sprinkle a thin layer of quicklime around the base of plants, but avoid applying it directly on the leaves to prevent interference with photosynthesis. Snails that come out at night to feed will come into contact with the lime, causing them to dehydrate and die. Alternatively, apply lime in the furrows and ridges of the field to create a protective barrier. A recommended rate is 5 to 7 kg per acre, though this method is less effective when the ground is wet.
Third, chemical control. Use 10% metaldehyde granules (snail bait) evenly on the surface of the crop pods in the evening, or apply 6% methiocarb granules across the field. For better results, apply the granules near the base of the plants. Additionally, using 6% methiocarb for prevention and treatment can help manage snail populations. If infestations are severe, repeat the treatment every 10 to 15 days to effectively reduce damage caused by snails.
Fourth, manual collection. Snails are most active early in the morning or after rain, so these are ideal times to manually collect them from the ground and plants. Be sure to follow the manufacturer's instructions regarding the proper use and dosage of any chemicals applied. Combining these methods can significantly improve snail management in gardens and farmlands.
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