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Pesticides are essential production materials for crop growth. The current use of large quantities of chemical pesticides has had some negative effects on crop growth. Therefore, the use of some specific plant-made pesticides is beneficial to environmental protection and cost savings. It can be said that it is a multi-purpose. The following are some of the methods used to make homemade pesticides for reference.
Garlic stems and leaves
Cut the stems of the garlic stems into small pieces of 6 to 7 cm and sprinkle them in the early rice fields to let them rot. The allicin contained in the leaf stem can reduce the occurrence of pests and diseases and reduce the number of pesticide spraying. If the chopped garlic leaves and stems can be put into the field before ploughing, the time for disease prevention and treatment will be longer and the effect will be better.
Nettle leaf
The dried ramie leaves are ground into fine powder, mixed with a certain proportion of soil and mixed with fertilizer to spread to the ground, which can control underground pests such as cockroaches, crickets and tigers. Soaked in 1 kg of ramie leaf powder and water 16-20 kg, infused with a kettle, can cure onion, leeks, garlic, radish, Chinese cabbage, cabbage caterpillar, carnivorous mites and so on. The ramie leaf powder can also be made into a leachate and sprinkled into toilets, pig pens, pits, etc., and has a significant effect on killing mosquito larvae and maggots.
Masson pine
Use 5 kg of masson pine and add 5 kg of boiling water, and immerse in a closed bath for 2 hours to control the rice leafhopper and rice planthopper. 30 times water immersion solution of pine needle can inhibit the spore germination of potato late blight.
Artemisia argyi
Chopped, add 10 times of water, cook for half an hour, spray after cooling, can control cotton aphid, red spider, cabbage caterpillar.
Platycladus
Crush it, add an equal amount of water, squeeze out the original solution, and add water twice to spray, which can control cotton aphid and aphids. The cypress leaf 10 times water immersion liquid has a significant effect on the control of wheat rust.
Weeping willow leaf
Smash it, add water 3 times soak for 1 day or boil for half an hour, filter and spray, can control cabbage caterpillars, mites, mites and so on. 5 times water infusion of willow leaves can inhibit wheat rust.
Mulberry leaf
Add 5 times of water to make a stock solution, add 2 kg of water per 0.5 kg of stock solution, or spray 10 times of water immersion solution of mulberry leaves to control cotton aphid and red spider. The 15 times water immersion solution of mulberry leaves can inhibit the germination of wheat rust pathogens.
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