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How should pesticides be stored?

1. Microbial pesticides shall be stored in a low temperature and dry environment, and shall be protected from high temperature and humidity. The storage time shall not exceed 2 years.

2021

10-31

How to identify ineffective pesticides

Dilution method: take 100g of emulsion pesticide, put it into a glass bottle and add 300g of water. Shake vigorously and leave it for half an hour. If the concentration of the liquid medicine is uneven, there is emulsifiable oil on the top and sediment on the bottom, it indicates that the medicine has failed. The more emulsifiable concentrates, the worse the drug properties.

2021

10-31

What is insecticide?

Pesticides refer to chemical agents used to control pests. It includes organic pesticides (organic chlorine, organic phosphorus, organic sulfur preparations, carbamates and pyrethroids), inorganic pesticides (inorganic arsenic, inorganic fluoride, inorganic sulfur preparations), vegetable pesticides, mineral oil pesticides, and microbial pesticides.

2021

10-31

Type of intermediate

Intermediates refer to semi-finished products, which are intermediate products in the production of certain products. For example, to produce a product, it can be produced from the intermediate to save costs.

2021

10-31

The role of intermediates as pharmaceutical works

Drug production requires a large number of chemicals. Most of these chemicals were originally produced by the pharmaceutical industry itself, but with the deepening of social division of labor and the progress of production technology, the pharmaceutical industry transferred some pharmaceutical intermediates to chemical enterprises for production. Pharmaceutical intermediates are fine chemical products, and the production of pharmaceutical intermediates has become a major industry in the chemical industry.

2021

10-31

Application fields of bactericides in industry

Application in industrial circulating cooling water 1. Quaternary ammonium salts: dodecyl dimethyl benzyl ammonium chloride, dodecyl dimethyl benzyl ammonium bromide, tetradecyl dimethyl benzyl ammonium chloride, poly quaternary ammonium salt, etc

2021

10-31

Toxicity determination of pesticides

1. Spray method: a spray method designed to simulate the actual control situation in the forest. In order to reduce the test error and make every tested insect receive the same amount of medicine as far as possible, spray is required to have pressure to make the size of the fog point consistent and spray even.

2021

10-31

Principles of application of biological pesticides

1. Treat symptomatically. The specificity and good selectivity of biopesticides determine that their killing species and host range are relatively specific. Insecticides made of insect pathogenic microorganisms, such as Bacillus thuringiensis and insect viruses, can not only prevent and kill Lepidoptera pests, such as cotton bollworm, cabbage caterpillar, and heartworm. It can also prevent and kill such pests as weevil and American leaf miner. Therefore, the use of biological pesticides should be targeted according to the types of pests.

2021

10-31

What pesticides are sensitive to what crops?

1. Chlorpyrifos is easy to cause harm when used in melon seedling stage, and it should be avoided when used in flowering stage of some crops. 2. Insecticides containing malathion, if used in high concentration, are sensitive to melons, pears, peaches, grapes, beans, cruciferous crops and tomato seedlings, and should not be used.

2021

10-31

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