Botanical pesticides refer to pesticides whose active ingredients are derived from plant organisms, and which are the preferred pesticide varieties for the production of pollution-free agricultural products.
Blood root alkaloids - Blood root alkaloids are one of the main active ingredients in the total alkaloids of the Papaveraceae plant. The preparation is 1% of the blood root alkalitable wettable powder. Alkali wettable powder). The medicine has certain control effect on the cruciferous vegetable cabbage caterpillar, the cardamom, the apple jaundice, the two-spotted spider mites, and the pear tree hibiscus. The control of cruciferous vegetables, cabbage caterpillars and kidney bean aphids, is 1% wettable powder 667 square meters 30-50 grams, and the best effect of spraying cabbage caterpillars in the young larvae is to control apple locusts and two-spotted spider mites. Pear tree and pear hibiscus use 1% wettable powder, the dilution ratio is 1500-2500 times, and it is generally best to spray evenly in the young nymphal stage of spider mites and pear hibiscus. The drug has a quick-acting effect. Generally, the control effect is obviously increased after 3 days, and the effect period is about 7 days, which is safe for crops.
Osthole - Osthole is an active ingredient extracted from the dried and mature fruit snake bed of the umbelliferous plant snake bed. The preparation is 0.4% osthole emulsifiable concentrate. It is mainly based on contact toxicity, supplemented by stomach toxicity, and has good control effect on cruciferous vegetable cabbage caterpillar and tea tree tea. The dosage of the cabbage flower of the cruciferous vegetable is 0.4% EC 667 square meters 80-120 ml; the tea tree tea ruler dosage is 0.4% emulsifiable concentrate 100-120 ml. Generally, every 667 square meters is diluted with 50-75 kilograms of liquid, and evenly sprayed for about 7 days, which is safe for crops.
Celangulin - celangulin is extracted from the root bark and seeds of the wild shrub plant of the genus Euonymus, and the preparation is 1% celangulin emulsifiable concentrate. The drug has strong stomach toxicity, antifeedant, repellent, and contact killing effects, and has good control effect on the cruciferous vegetable cabbage caterpillar. Use a dose of 667 square meters 1% emulsifiable oil 50-70 ml, usually add water 60-75 kg diluted, evenly spray. The drug has good quick-acting effect, and the control effect can reach more than 90% one day after the drug, and the effect period is more than 7 days, which is safe for crops.
The eucalyptin is the main component of eucalyptus oil. The preparation is 5% eucalyptus solution. According to the Chinese pesticide network , the drug has good control effect on cruciferous vegetable aphids. Use a dose of 5% solution 667 square meters 70-100 ml, 75 kg of water, even spray, effective period of about 7 days, for crop safety.
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