Biological pesticides are known for their low residue levels, which make them ideal for producing green agricultural products, especially those certified as AA-grade. However, due to the variety of biological pesticides available, each has unique characteristics. Proper application is essential to maximize their effectiveness and achieve the desired outcomes.
1. Rotenone, also known as Shi Lvbao, exhibits contact and stomach toxicity against pests, while being safe for natural enemies. It is effective against a wide range of insects, including Lepidoptera, Hemiptera, and Coleoptera. For example, it can be used at a dilution of 400-600 times with a 2.5% emulsifiable concentrate to control aphids.
2. Avermectin, also called Qiqisu or Ai Fuding, is a new type of antibiotic-based insecticide with contact and stomach toxicity. It is effective against pests such as pear hibiscus, mites, whiteflies, and heartworms. It is typically applied at a concentration of 4500-5000 times.
3. Chlorinated oxime, also known as rice bran, works by disrupting the molting process in larvae, leading to dehydration and starvation. It is commonly used to control pests like the Oriental fruit moth, grape leaf roller, pine caterpillar, and American white moth.
4. Wu Da Oasis No. 1 is a virus-based insecticide that targets the fat cells and midgut nuclei of insects, causing rapid replication and death. It is particularly effective against lepidopteran pests and should be applied during peak egg-laying periods for optimal results.
5. Yanbaisu is a mixture containing nicotine, ketone, and alizarin, offering strong contact and stomach toxicity. It is effective against Lepidoptera, Diptera, and Hemiptera, including aphids, red spiders, and scale insects. A typical application involves using 1.1% emulsifiable concentrate diluted 1000 times, applied every 7–10 days.
6. Saponin Nicotine is a broad-spectrum insecticide derived from saponin and nicotine, with good rain resistance. It is used to control red spiders and scale insects. In the early stages of scale insect infestation, a 27% solution diluted 300 times is recommended, applied every 5–7 days.
7. Chitin-based products, such as "A Strong," form a protective film on plant surfaces to prevent bacterial infections. It is often used during fruit formation to enhance fruit quality and sugar content. A 2% solution diluted 600–800 times is typically applied every 6–7 days.
8. Asimida is a bactericidal agent that inhibits mitochondrial respiration in bacteria, leading to their death. It is used to control diseases such as pear scab, black spot, and grape downy mildew. A 25% solution diluted 500–800 times is commonly used for pear black spot disease.
9. Polyoxygenate, also known as Bao Li'an or Dox's bacteria, is a broad-spectrum nucleoside antibiotic. It is effective against various fungal and bacterial diseases, including grape black bean disease and strawberry gray mold. A 3% solution diluted 600–900 times is typically used, with applications every 7 days.
10. Kejiakang, also known as mesomycin, is effective against both bacterial and some fungal diseases. It is used to control grape anthracnose, apple ring disease, and other crop diseases. A 3% gram bacterium solution diluted 1000–1200 times is recommended for early-stage applications.
11. Root Complex, also known as Root Rot 110, helps control root rot in fruit trees and promotes root development. During transplanting, it is applied at 800 times dilution, while during growth periods, a 500–600 times solution is used, with 200–300 ml per plant.
These biological pesticides offer a safer, more sustainable alternative to chemical pesticides, supporting environmentally friendly farming practices while maintaining high crop productivity.
Knife Section, Knife Section Combine Parts, Harvester Knife Section, Combine Knife Section
NINGBO BORINE MACHINERY CO.,LTD , https://www.borine-agroparts.com