Self-contained method for pollution-free pesticides

The selection of pesticides is the key to whether or not pesticide residues in vegetables, fruits, and tea are excessive. The current market is increasing the demand for pollution-free products, and the production of pollution-free agricultural products requires the use of pollution-free pesticides. The so-called pollution-free pesticides are those with low doses, good control effects, little or no toxicity to humans and animals and various beneficial organisms, require easy decomposition in the external environment, and do not cause high pollution, low toxicity, and low residual pollution to the environment and agricultural products. pesticide. In production, farmers' friends can use some simple and common raw materials to prepare their own pollution-free pesticides. The following describes several methods of preparation of pollution-free pesticides.

Insect preparations

The corpses of cabbage caterpillars, armyworms, cotton bollworms and ground tigers were collected and mashed into pulp. Add a small amount of 100g of paste, soak for 24 hours, filter out the liquid, and then against the 50 kg of water, add 50 grams of detergent powder and mix well and serve as liquid medicine. Use these liquids to control similar pests, killing rates of up to 90%.

Leaf preparation

1.5 kilograms of fresh buckwheat leaves pounded with 1.5 kilograms of water, filtered to slag, plus 40 kilograms of water per kilogram of juice, can control cabbage caterpillars, rapeseed meal. Use 1 part of eucalyptus leaves and 3 kg of water, soak for 1-2 days. Filter and spray the water immersion liquid to control locusts, cabbage worms, etc.

Pigeon feces preparation

One kilogram of pigeon droppings plus 10 kilograms of water is placed in the barrel or in the tank for 15-20 days. When used, stir well and pour it on the roots of the vegetables. This will not only control the ground tiger, but also can topdress the crop.

Onion preparation garlic, onion 20 grams each mixed mash, wrapped with gauze, soaked in 10 kg of water for 24 hours. This liquid can effectively control the beetles, aphids, red spiders.

Plant ash preparation

10 kg of ash per acre is used to soak the 50 kg of water for 24 hours, and the filtrate can be sprayed to effectively control aphids and yellow squash. If the onion, garlic, leeks are affected by the species fly, onion fly, can be applied per acre or planting ash 20-30 kg, both anti-mite and increase production, the effect is obvious.

Wheat bran preparation

First, stir 5 kg of wheat bran and cool it for use. The 90% crystal trichlorfon 130-150 grams, 250 grams of sugar, 50 grams of white wine and 5 kilograms of warm water, stir, and then pour the cooled wheat bran mixed with a good mix. In the evening of the sunny day, it was chosen to sprinkle pesticides between the rows of vegetables and near the roots of the seedlings to prevent underground pests such as earthworms and floorworms.

The baking soda formulation uses a 0.2% baking soda solution to control powdery mildew, anthracnose, downy mildew, and grey mold of cowpea.

Potassium permanganate preparation

With 0.2% potassium permanganate dilution can control melon powdery mildew, usually 5-6 days spray 1, even spray 2-3 times, the effect is not worse than triadin. After eggplant is transplanted live, spraying 800 times potassium permanganate solution can control the knock-out of eggplant fruit.

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