New botanical pesticides used in melons, fruits and vegetables

Botanical pesticides refer to pesticides with active components derived from plants, which are substituted for chemical pesticides and should be preferred in the production of pollution-free agricultural products. Next, we will introduce several new botanical pesticides used in melons, fruits and vegetables.

Osthol

Osthol is an active ingredient extracted from the dried and ripe fruit of Umbelliferae plant Cnidium, and the preparation is 0.4% osthol EC. It is mainly contact effect, supplemented by stomach toxicity, and has a good control effect on cruciferous vegetables, cabbage insect and tea inchworm. The dosage for the control of cruciferous vegetables was 0.4% EC 667 square meters 80m ~ 120 ml, and the dosage for the control of tea inchworm was 0.4% EC 100 ml 120 ml. Generally every 667 square meters with diluted liquid 50 murals 75 kg, uniform spray, lasting for about 7 days, safe for crops.

Celangulin

Celangulin is an active ingredient extracted from the root bark and seeds of Celastraceae wild shrub plant Celangulaceae. The preparation is 1% Celangulin EC. The drug has strong stomach toxicity, antifeedant, repellent and contact killing effects, and has a good control effect on cruciferous vegetables. The use dose is 667 square meters, 1% EC 50muri 70ml, generally diluted with water 60mur75kg, evenly sprayed. The drug has good quick effect, the control effect can reach more than 90% one day after the drug, and the effect lasts for more than 7 days, which is safe for crops.

Sanguinarine

The drug has a certain control effect on green insects of cruciferous vegetables, bean aphids, apple aphids, two-spotted leaf mites and pear wood lice. The dosage for the control of cruciferous vegetable green insects and bean aphids is 667 square meters and 30mur50 grams, and the spraying effect of cabbage green insects is the best in the young larval stage; 1% wettable powder is used to control apple tree aphids and two-spotted mites and pear wood lice, and the dilution multiple is 1500 to 2500 times. Generally, the effect of uniform spray is the best in the young nymphs stage of leaf mites and pear wood lice. The quick effect of the drug is general, usually the control effect increases obviously after 3 days, and the effective period is about 7 days, which is safe for crops.

Cineole

Cineole is the main component of eucalyptus oil, and the preparation is 5% cineole soluble agent, which has a good control effect on cruciferous vegetable aphids. The use dose of 5% soluble solution is 667 square meters, 70MUR 100ml, 75 kg of water, uniform spray, lasting about 7 days, safe for crops.