New types of botanical pesticides suitable for fruits and vegetables
New botanical pesticides used on fruits and vegetables
(Agricultural Wealth Network) Botanical pesticides refer to pesticides whose active ingredients are derived from plants. They are the pesticide varieties that should be given priority for replacing chemical pesticides and producing pollution-free agricultural products. Next, we will introduce several new types of botanical pesticides used on fruits and vegetables.
Osthole
Osthole is an active ingredient extracted from the dried, mature fruit of the Umbelliferae plant Cnidium monnieri, known as cnidium fruit. The formulation is 0.4% osthole emulsifiable concentrate. It acts mainly by contact poisoning, with stomach poisoning as a secondary effect, and has good control efficacy against cabbage caterpillars on cruciferous vegetables and tea geometrids on tea trees. For controlling cabbage caterpillars on cruciferous vegetables, the use dose is 80-120 mL of 0.4% emulsifiable concentrate per 667 sq m; for controlling tea geometrids on tea trees, the use dose is 100-120 mL of 0.4% emulsifiable concentrate. Generally, 50-75 kg of diluted spray solution is used per 667 sq m, sprayed evenly, with a residual effective period of about 7 days, and it is safe for crops.
Celastrus angulatus extract
Celastrus angulatus extract is an active ingredient extracted from the root bark and seeds of the wild shrub Celastrus angulatus of the Celastraceae family. The formulation is 1% Celastrus angulatus emulsifiable concentrate. This pesticide has strong stomach poisoning, antifeedant, repellent, and contact poisoning effects, and has good control efficacy against cabbage caterpillars on cruciferous vegetables. The use dose is 50-70 mL of 1% emulsifiable concentrate per 667 sq m, generally diluted with 60-75 kg of water and sprayed evenly. This pesticide has relatively good rapid action, with control efficacy reaching more than 90% 1 day after application, a residual effective period of more than 7 days, and it is safe for crops.
Sanguinarine
Sanguinarine is one of the main active ingredients in the total alkaloids extract of Macleaya cordata, a plant in the Papaveraceae family. The formulation is 1% sanguinarine wettable powder (5% Macleaya cordata total alkaloids wettable powder). This pesticide has certain control efficacy against cabbage caterpillars on cruciferous vegetables, bean aphids on kidney beans, yellow apple aphids and two-spotted spider mites on apple trees, and pear psyllids on pear trees. For controlling cabbage caterpillars on cruciferous vegetables and bean aphids on kidney beans, the use dose is 30-50 g of 1% wettable powder per 667 sq m, with the best control efficacy when spraying for cabbage caterpillars at the young larval stage; for controlling aphids and two-spotted spider mites on apple trees and pear psyllids on pear trees, use 1% wettable powder at a dilution of 1500-2500 times, generally with the best control efficacy when sprayed evenly at the young nymph stage of spider mites and pear psyllids. The rapid action of this pesticide is average, and control efficacy usually becomes noticeably higher only 3 days after application, with a residual effective period of about 7 days, and it is safe for crops.
Cineole
Cineole is the main component of eucalyptus oil. The formulation is 5% cineole soluble concentrate. This pesticide has good control efficacy against aphids on cruciferous vegetables. The use dose is 70-100 mL of 5% soluble concentrate per 667 sq m, mixed with 75 kg of water, sprayed evenly, with a residual effective period of about 7 days, and it is safe for crops.
Osthole
Osthole is an active ingredient extracted from the dried, mature fruit of the Umbelliferae plant Cnidium monnieri, known as cnidium fruit. The formulation is 0.4% osthole emulsifiable concentrate. It acts mainly by contact poisoning, with stomach poisoning as a secondary effect, and has good control efficacy against cabbage caterpillars on cruciferous vegetables and tea geometrids on tea trees. For controlling cabbage caterpillars on cruciferous vegetables, the use dose is 80-120 mL of 0.4% emulsifiable concentrate per 667 sq m; for controlling tea geometrids on tea trees, the use dose is 100-120 mL of 0.4% emulsifiable concentrate. Generally, 50-75 kg of diluted spray solution is used per 667 sq m, sprayed evenly, with a residual effective period of about 7 days, and it is safe for crops.
Celastrus angulatus extract
Celastrus angulatus extract is an active ingredient extracted from the root bark and seeds of the wild shrub Celastrus angulatus of the Celastraceae family. The formulation is 1% Celastrus angulatus emulsifiable concentrate. This pesticide has strong stomach poisoning, antifeedant, repellent, and contact poisoning effects, and has good control efficacy against cabbage caterpillars on cruciferous vegetables. The use dose is 50-70 mL of 1% emulsifiable concentrate per 667 sq m, generally diluted with 60-75 kg of water and sprayed evenly. This pesticide has relatively good rapid action, with control efficacy reaching more than 90% 1 day after application, a residual effective period of more than 7 days, and it is safe for crops.
Sanguinarine
Sanguinarine is one of the main active ingredients in the total alkaloids extract of Macleaya cordata, a plant in the Papaveraceae family. The formulation is 1% sanguinarine wettable powder (5% Macleaya cordata total alkaloids wettable powder). This pesticide has certain control efficacy against cabbage caterpillars on cruciferous vegetables, bean aphids on kidney beans, yellow apple aphids and two-spotted spider mites on apple trees, and pear psyllids on pear trees. For controlling cabbage caterpillars on cruciferous vegetables and bean aphids on kidney beans, the use dose is 30-50 g of 1% wettable powder per 667 sq m, with the best control efficacy when spraying for cabbage caterpillars at the young larval stage; for controlling aphids and two-spotted spider mites on apple trees and pear psyllids on pear trees, use 1% wettable powder at a dilution of 1500-2500 times, generally with the best control efficacy when sprayed evenly at the young nymph stage of spider mites and pear psyllids. The rapid action of this pesticide is average, and control efficacy usually becomes noticeably higher only 3 days after application, with a residual effective period of about 7 days, and it is safe for crops.
Cineole
Cineole is the main component of eucalyptus oil. The formulation is 5% cineole soluble concentrate. This pesticide has good control efficacy against aphids on cruciferous vegetables. The use dose is 70-100 mL of 5% soluble concentrate per 667 sq m, mixed with 75 kg of water, sprayed evenly, with a residual effective period of about 7 days, and it is safe for crops.