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Trichlorfon is an organophosphate insecticide known for its low toxicity and broad-spectrum effectiveness. It can convert into dichlorvos in a weak base, but this form is unstable and breaks down quickly. The compound exhibits strong stomach toxicity against pests, has contact action, and is absorbed by plants, although it lacks systemic movement within the plant. Trichlorfon is widely used for controlling chewing mouthpart pests on various crops such as rice, wheat, vegetables, tea, fruit trees, mulberry, and cotton. It is also effective against livestock parasites and household pests. Common formulations include 80% and 90% crystals, 50% and 80% wettable powders, as well as 2.5% and 5% dusts. Here are some of the key applications: 1. Spraying 90% crystals diluted 1000–1500 times effectively controls pests like scale insects, caterpillars, moths, leaf miners, and spider mites. 2. Mixing 50 grams of 90% crystal with 1–2 kg of water and then combining with 10–20 kg of bait (such as cottonseed cake or wheat bran) helps control cockroaches and underground pests. 3. Using 50% trichlorfon WP mixed with bait and spread in the evening is effective for trapping pests like cockroaches. 4. Applying a 1000-fold dilution of 90% crystals to seedling roots helps prevent underground pests such as grubs and cockroaches. In terms of crop-specific use: 1. For rice: Apply 150–200 grams of 80% crystal or soluble powder per acre with 75–100 kg of water. This controls pests like rice leaf miner, rice planthopper, and rice borer. 2. For dry land crops: Use 150g of 80% crystal per acre with 50–75kg of water, or 2kg of 5% powder per acre. Effective against soybean pests like bean aphid and grasshoppers. 3. For cotton: Treat 80–200g of 80% crystal per acre with 75kg of water to control bollworms and leafhoppers. 4. For vegetables: Spray 80–100g of 80% crystal or quick-dissolving powder with 50kg of water to manage cabbage butterfly and diamondback moth. 5. For tea plants: Apply a 1000-fold dilution of 80% soluble powder to control tea caterpillars and tea mites. 6. For fruit trees: Use a 800–1000-fold dilution of trichlorfon crystals to manage pests, and a 500-fold dilution for locust mites. 7. For forestry: Spray 25–200g of 90% crystal per 2 mu for pine caterpillar control. 8. For underground pests: Prepare poison baits using 50–100g of active ingredient per acre to trap cockroaches and other pests. 9. For livestock and sanitary pests: Dilute 80% soluble powder at 400 times for washing animals, and 1:100 for fly control in horses and calves. As you can see, trichlorfon is a highly effective insecticide with versatile applications across agriculture, forestry, and animal health. If you're looking to purchase or find a reliable trichlorfon manufacturer, you can consult China Pesticide Network for detailed information and trusted suppliers.

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