Most plants contain neem insecticide , anthelmintic , antifeedant substances such as neem , TSN , Neem etc. Neem Neem is a deciduous tree , widely distributed in northern China , and its roots, leaves and fruits contain Toosendanin , you can control a variety of borers , planthoppers , caterpillar , aphids , etc. Bark and leaves contain Toosendanin , alkaloids, kaempferol , phenol and other substances, including bitter fruit quality ; nucleolus containing neem oil.
Mechanism: insects, insect , poor feeding , growth inhibition.
Control target: bollworm , aphids , diamondback moth , beet armyworm, cutworms, Pieris , potatoes ladybug , mites , leafhoppers, leafminers and a variety of whiteflies .
Preparation and use:
Aqueous extract of neem seed production : back pack sprayer Collect the neem tree fruit falls to the ground , remove the flesh , the seeds were washed on the flesh . The seeds are then stored in ventilated place, at the child when needed peeled , chopped, wrapped in a cloth soaked in a bucket within 24 hours, compared to the flooding liter 25-50g. Thus prepared extract on Pieris , melon leaf beetle and locust very effective.
The 5kg neem seed powder wrapped in a cloth inside , soak in a bucket within 12 hours after the squeeze bag , and the other with a little water to melt 10kg soap, into the barrel , stir , add water so that the liquid reaches 100L, spray can control corn borer .
Neem oil production: handmade neem oil. First seeds hulled, inside scoop mashed into a paste to brown , add a little water mass into a ball , kneading in the basin until the surface leaking oil, then beat , neem oil will drop . In this way , 1kg neem seed kernel can be refined 100-150ml Neem oil.
Neem oil with a little soapy water emulsion , diluted with water to 100-200 times can effectively control mites and planthoppers .
Botanical pesticides pest and disease prevention , ecological protection, pollution-free vegetable production preferred pharmacy, there are a large number of existing plants has bactericidal , water power sprayer insecticidal species such as Ailanthus , datura , purslane , walnuts , etc. , to be in our further research applications.
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