Species of biological pesticides commonly used in flowers

(Agricultural Wealth Network) Control of flower leaf-eating pests

1. Insect growth regulators. Chlorfenuron series insecticides are new insect growth regulators. Their insecticidal mechanism is to inhibit chitin synthesis in insect cuticle. Demerylurea is mainly a stomach poison, but it can also penetrate insect cuticle and act. The product has the advantages of good control effect, long residual effect period, low control cost, rain water resistance, insect resistance, safety to flowers, plants, human beings, livestock and environment, etc.

Second, it is a bacterial pesticide-Bt emulsion. Bt emulsion is Bacillus thuringiensis microbial pesticide, belonging to Bacillus bacterial pesticide. Its main insecticidal component is hemispore crystal. It has become a major biopesticide widely used in countries around the world. The pathogenic mechanism of Bt emulsion is that Bt insecticidal toxin can make the digestive tract of pests change and die. Leaf-eating pests eat leaves with Bt emulsion, causing paralysis, food failure, slow response, diarrhea, and then appear black rings in the abdomen, and gradually expand to the whole body, and finally poisoning death. After death, pests turn into black soft bodies, rot, hang upside down or die on leaves and branches. Bt bacteria have pathogenic and toxic effects on various lepidopteran larvae and leafhoppers, such as fruit borer, yellow thorn moth, geometrid moth, etc., mainly used to control lepidopteran insect larvae.

Botanical pesticides mainly include the following four types.

1% smoke·hundred·plain oil: multi-component Chinese herbal medicine plant emulsifiable insecticide, easy to produce resistance to insects can also be quickly killed, with good degradation, no residual poison, safe use, pollution-free characteristics, has the role of stimulating the growth of flowers.

Baicao No. 1 (0.6% matrine·lactone aqueous solution): prepared by crushing, dissolving, adding auxiliary agents and penetrating agents of various plants and Chinese herbal medicines such as Cynanchum komarovii, Sophora alopecuroides, etc. The mechanism of action is mainly contact killing, stomach poison is auxiliary, and it has promotion effect on flower growth. It can be used to control various aphids and leaf-eating pests of flowers.

Baichongsha (1.2% smoke·ginseng emulsifiable concentrate): belongs to plant pesticide, the active ingredients are nicotine and matrine, and it has stomach poison, contact killing and fumigation effect on insects. Low toxicity to humans and livestock, no pollution to the environment, no phytotoxicity to flowers.

Fruit and vegetable net (0.5% meliamin emulsifiable concentrate): belongs to botanical pesticide. The medicine has high efficiency, safety, low toxicity, low residue and no phytotoxicity to flowers. At the same time, it has stomach poison, contact killing and certain antifeedant effect.

1. Fungal pesticides, mainly aphids.

Aphicide is a new fungous biological pesticide. Its main insecticidal component is an ester-soluble sterol compound. It has low toxicity, quick knock down to aphids, and kills leaf mites. It does not harm beneficial insects such as lacewing and ladybug. It has the effect of promoting the growth of flowers.

Second, antibiotic series pesticides.

Amitin (1.8%, 0.9%): Amitin is also called Aifuding. The active ingredient of this drug is abamectin, which is widely used at home and abroad. It can effectively control numerous phytophagous mites and other pests that are insensitive to or resistant to commonly used pesticides, such as red spiders, leaf miners, sting moths, geometrids, lymantrids, psyllids and other leaf-eating and stinging flower pests. It has stomach poison and contact killing effect on mites and other pests. Compared with chemical pesticides, the recovery speed of predatory and parasitic beneficial insects is faster after using this medicine, which is beneficial to ecological balance. The medicine is easy to decompose when it meets oxygen and light, and has no residue. It is beneficial to human beings, livestock, flowers and plants.

Liuyangmycin (10% aqueous formulation): An acaricide, a new antibiotic agent.

Huaguangmycin (2.5% powder preparation): A new antibiotic acaricide, which does not pollute the environment, has no residue in the air and soil, and has protective effects on beneficial insects.

Third, plant pesticides, mainly guard birds (0.5% veratrine alcohol), is a plant pesticide, veratrine alcohol solution as the main raw material, on all kinds of aphids, especially easy to produce resistance aphids best effect, also has a certain effect on spider mites.