1. Which pesticide is better for killing small snails?Snails like moisture and are afraid of light. They hide in cracks or hidden places during the day and start to look for food in the evening. The peak feeding period of snails is around 10 pm. They burrow into the soil in the early morning and can feed all day on rainy days. They often crawl out after rain to harm vegetables. Snails can generally reproduce 1-2 times a year. April and May are the peak mating and egg-laying periods, May to June is the first peak period of damage, and October to November is the second peak period of damage. Prevention and control methods: remove weeds. Snails lay eggs in the topsoil layer. If the eggs are exposed to the soil surface, the egg shells will rupture and die after being exposed to the sun for more than 17 hours. Therefore, removing weeds during the peak egg-laying period can worsen the living environment of snails and achieve the purpose of indirectly eliminating snails. ② Chemical control. Use 6% snail killer granules to lure and kill, and apply evenly between vegetable rows in the evening, applying a pile every one meter or so, with about 30-40 grains per pile.2. Does highly effective chlorfenapyr kill snails?Can kill snails. High-efficiency cyhalothrin belongs to the pyrethroid insecticide, which has contact and stomach poison effects and a broad insecticide spectrum. It mainly controls pests with piercing-sucking mouthparts such as aphids, and can also control pests with chewing mouthparts, and can also kill mites. It has a long lasting effect, kills insects quickly, and has strong knockdown power, but it does not have a systemic effect and has no control effect on snails. It is not a snailicide, so high-efficiency cyhalothrin cannot kill snails or the effect is very poor. 3. Ants and snails have become a plague. What pesticide can be used to kill them?Chemical control. (1) Use 0.50-0.6 kg of 6% Metaldehyde (tetraacetaldehyde) snail-killing granules, 8% Metaldehyde granules or 2 kg of 10% Metaldehyde (snail enemy) granules per mu, mix with appropriate amount of fine soil or fine sand, and spread evenly in the field in the evening. (2) In the early morning when snails have not yet burrowed into the soil, spray with 800-1000 times diluted copper sulfate or 1% salt water, the control effect can reach more than 80%. (3) If snails are found causing damage, spray the leaves with 1500 times diluted 90% crystalline dichlorvos. 4. What pesticides can be used to kill snails?(1) Use 0.5 kg of 6% polyacetaldehyde granules per mu, mix with 15-20 kg of fine soil or fine sand, and spread evenly in the field in the evening. (2) In the early morning, when snails have not yet burrowed into the soil, spray with 800-1000 times diluted copper sulfate or 1% salt water, and the control effect can reach more than 80%. (3) If snails are found causing damage, spray the leaves with 8% metaldehyde (Tiannuo) 1000 times diluted immediately. Pesticides produced by regular manufacturers are effective. Brand names are not allowed here to prevent suspicion of advertising. 5. What are the commonly used agents for preventing and controlling snails on garden plants?Commonly used agents include 40% ethylene aluminum WP 250-300 times solution, 25% ridomycin WP 800-1000 times solution, 75% chlorothalonil WP 500-800 times solution, 72% cypermethrin WP 600-800 times solution, 25% metalaxyl WP 500-800 times solution, etc. It is best to use various agents alternately to prevent the bacteria from developing drug resistance. Spraying should be done in the morning on a sunny day, and the solution should be evenly sprayed on the back of the leaves. 6. Are these two methods the only way to completely and efficiently control snails?1. Killing with poison bait: Use 8% metaldehyde granules, about 500 grams per mu, and spread it in the evening, apply it in strips or spots (the spot application distance should be 40-50 cm) on the ridges of the field to kill, which has a good effect. 2. Chemical control: For snails on leaves, you can use 300 times diluted 80% metaldehyde wettable powder or 800-1000 times diluted 98% copper sulfate to spray the crops in the evening. This will make it easier for snails to contact the pesticides when they are active, and the ideal effect can be achieved. Apply the pesticide again after two weeks for better results. 7. Can ordinary pesticides be used to kill snails by sprinkling salt on them?cannot To prevent and control snails, you cannot use pesticides for controlling ordinary insects. These conventional pesticides have basically no effect on snails, which belong to the mollusc family. Even if you spray, scatter, or apply these pesticides on the ground, they will have no effect. In order to achieve the goal of "putting the medicine into the field and completely eliminating snails", it is necessary to use special drugs for controlling snails, slugs, apple snails and other mollusks. According to the actual control effect in the field, the best drug for controlling snails is metaldehyde or drugs containing metaldehyde as an effective ingredient (selective snailicide, which kills snails but does not harm crops), such as the common 6% metaldehyde granules and 80% metaldehyde wettable powder on the market, or other compound drugs containing metaldehyde as an effective ingredient. Whether it is granules or powders, metaldehyde can effectively kill all kinds of soft snails, including snails. Because metaldehyde or drugs containing metaldehyde active ingredients, after contact with snails or after being accidentally ingested by snails, Not only will it destroy the enzyme activity in the snail's body, paralyze the snail's nerves, and reduce the snail's ability to move, but this drug will also cause the soft-bodied snail to continue to secrete large amounts of mucus and continue to become dehydrated until the snail eventually dies from excessive dehydration. This is what we often call the stomach poison method of killing insects. |
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