Insecticides Farm Chemicals — Page 5

Pyriproxyfen

As a new type of insect growth regulator, pyrrolyl ether, also known as mieyoubao and mosquito fly ether, was successfully developed by Sumitomo Chemical Industry Co., Ltd. in Japan. It acts as a juvenile hormone of insects and has the effect of inhibiting pupation and emergence of mosquito and fly larvae. When mosquito and fly larvae contact with the insecticide, they basically die in pupa stage and cannot feather. The effective period of the insecticide is about 1 month. It is convenient to use and has no peculiar smell. It is a good insecticide for killing mosquitoes and flies.

Spirodiclofen

Spirodinyl ester is a kind of chemical substance, its molecular formula is c21h24cl2o4. White powder appearance, no special smell, contact killing effect, no inhaling. It has a good killing effect on mite eggs, young mites and RUOYE mites, but it has no effect on adult mites, but it can inhibit the hatching rate of female mites.

TOLFENPYRAD

Imidazolamide is a new type of pyrazomide insecticide and acaricide. Its efficiency and safety have been confirmed by various biological efficacy tests and safety tests. Zolamides have no cross resistance to other insecticides and acaricides currently used in the domestic market, and are rapidly degraded in plants, soil and water. Because of its protection, treatment, eradication, penetration, and non mutagenic characteristics, it is a new type of agricultural insecticide with great development potential and market vitality after triazole insecticides.

Tebufenozide

The pure product is a white solid, m.p.191 ℃, vapor pressure 3.0 × 10-6pa (25 ℃), relative density 1.03 (20 ℃), distribution coefficient 4.25, solubility in water at 25 ℃ is 1mg / L, slightly soluble in organic solvent, stable in storage for 7 days at 94 ℃, stable in light at 25 ℃ and pH value 7. The new accelerating agent of insect peeling has special effect on Lepidoptera and larva, and has certain effect on selective Diptera and Daphnia.

Thiamethoxam

Thiamethoxam is a new nicotine insecticide. Its mechanism is similar to that of imidacloprid. It can selectively inhibit nicotinic acid acetylcholinesterase receptor in insect central nervous system, and then block the normal conduction of insect central nervous system, resulting in the death of insect when paralysis occurs. It not only has contact killing, stomach toxicity and inhaling activity, but also has higher activity, better safety, wider insecticidal spectrum, fast action speed and long duration. It is a better variety to replace those organophosphorus, carbamate and organochlorine insecticides with high toxicity to mammals, residues and environmental problems. It has high activity to Coleoptera, Diptera, Lepidoptera, especially Homoptera. It can effectively control all kinds of aphids, leafhoppers, planthoppers, whiteflies, beetle larvae, potato beetles, nematodes, ground beetles, leafminer moths and many kinds of chemical pesticides. There was no cross resistance with imidacloprid, acetamiprid and nitenpyram. It can be used for stem and leaf treatment, seed treatment and soil treatment. The suitable crops are rice, beet, rape, potato, cotton, bean, fruit tree, peanut, sunflower, soybean, tobacco and orange. It is safe and harmless for crops to use at the recommended dose.

Triazophos

The broad-spectrum organophosphorus insecticide and acaricide can not only kill nematodes to a certain extent, but also have stomach toxicity and contact killing effects, which can penetrate into plant tissues, but also have no inhaling activity, and can harm crop pests (borer, bollworm, spider, aphid) such as cotton, grain, fruit tree, etc, It has a significant effect on underground pests, plant nematodes and forest pine caterpillars, with a period of validity of more than 2 weeks. Its egg killing effect is obvious, especially on Lepidoptera. The LD50 of acute oral toxicity in rats was 66 mg / kg. The preparation includes emulsifiable oil, granules and ultra-low volume liquid.