History of pesticide invention

1. Who was the first person to invent pesticides?

Drugs mainly used to control agricultural pests and urban sanitary pests have a long history, large dosage and many varieties.

Insecticides can be divided into:

① stomach toxicity. It enters the digestive system through the mouth of insects and plays a toxic role, such as trichlorfon.

(2) contact killer. After contact with epidermis or appendages, it seeps into the insect body, or corrodes the wax layer of the insect body, or blocks the valve to kill pests, such as pyrethroids and mineral oil emulsions.

③ Fumigating agent. Use the volatilization of toxic gas, liquid or solid to produce steam to poison pests or bacteria, such as methyl bromide.

④ Internal inhalation of pesticides. It is absorbed by seeds, roots, stems and leaves of plants and transported to the whole plant. In a certain period of time, precursors or their activated metabolites feed on plant tissues or suck plant juice with pests and enter insects, which plays a toxic role, such as dimethoate.

According to the toxicological effect can be divided into:

(1) nerve agent. It acts on the nervous system of pests, such as DDT, parathion, carbofuran and pyrethrins.

(2) Respiratory poisoning. Respiratory enzymes that inhibit pests, such as cyanohydrogen acid.

③ Physical poisoning. For example, mineral oil can block the valve of pests, and inert powder can grind the epidermis of pests and kill pests. ④ Specific pesticides. It causes abnormal physiological reactions of pests, such as repellent to keep pests away from crops, inducer to lure pests with sex or bait, antifeedant to inhibit their taste and stop eating, sterile agent to make one male and one female sterile or both male and female sterile, and insect growth regulator to affect the growth, metamorphosis and reproduction of pests.

According to the source can be divided into:

① Inorganic and mineral pesticides. Such as lead arsenate, calcium arsenate, sodium fluorosilicate and mineral oil emulsion. Generally, this kind of insecticide has low efficacy and is easy to cause phytotoxicity to crops, while arsenic is very toxic to people. Therefore, most organic synthetic pesticides have been eliminated since they were widely used.

② Botanical pesticides. About 1000 plants in the world are more or less toxic to insects. Pyrethrum, derris and tobacco are widely used. In addition, some plants also contain active substances similar to juvenile hormone, precocious hormone and molting hormone. For example, camptothecin isolated from the root bark, bark or fruit of Camptotheca acuminata has a strong sterile effect on Dendrolimus punctatus.

③ Organic synthetic pesticides. For example, DDT, HCH, endosulfan, toxaphene, etc. DDT and HCH used to be two pesticides with large output and wide application, but they were banned or restricted in many countries since the early 1970s because of their easy accumulation in organisms. There are more than 400 varieties of organophosphorus pesticides such as parathion, trichlorfon and dimethoate, and the output ranks first among pesticides; Carbamate, such as carbaryl and carbofuran; Pyrethroid fenvalerate, deltamethrin, etc. Chlordimeform and dimehypo of organic nitrogen.

④ Insect hormone insecticides. Such as various juvenile hormones and sex pheromone analogues. (See Insect Hormone Pesticide).

The action mechanism of a few traditional pesticides, such as mineral oil emulsion, is mainly to play a physical insecticidal role on the body surface, while most organic synthetic pesticides enter the pests, interfering or destroying the normal physiological and biochemical reactions in some parts. Some enter the digestive tract, penetrate into the blood through the mouth, some pass through the epidermis, and some pass through the stomata and trachea. Drugs that enter the body have biochemical reactions with various enzyme systems in pests. Some reactions make drugs degrade and lose their toxicity, but some drugs are activated to enhance their toxicity. Undegraded drugs (or active compounds) exert toxic effects in some parts due to different mechanisms, such as the nervous system or cells.

Recently, Eden Bioscience Company has successfully developed a new crop production and protection technology. This new technology will increase the output of crops, make them cleaner and more conducive to human health.

The first application product developed by EDEN Bioscience using this technology is a voice product called Messenger (R). It provides an effective new tool for crop growers, enabling them to control crop growth, reduce diseases and increase yield. This tool can also kill pests, including tiny nematodes.

In this way, crop growers can reduce or not use chemical pesticides harmful to the environment, thus reducing environmental pollution, improving crop yield and producing healthier products.

At present, the company is applying for a sales license for this new product. The US Environmental Protection Agency will complete the registration of this new product in a few weeks.

The invention relates to a preparation method of an insecticide, which utilizes the large adsorption capacity and slow release function of nano silicon-based oxide to enable the insecticide to be released from the nano silicon-based oxide for a long time. Overcomes the shortcomings of the prior art, such as short pesticide residue period, instability to light, easy decomposition and failure, certain harm to human body caused by the infiltration of effective components into space, and certain pollution to the environment caused by residual indecomposable components. This method provides a way to prepare this insecticide.

2. What is the background of pesticide invention? Hello, I'm from the Plant Protection Station.

Pesticide is a kind of medicine used to treat crop diseases and insect pests, and there are many kinds. Pesticides originated in China. 3000 years ago, our people began to fight against locusts and moths; /kloc-using mercury, arsenic and veratrum before 0/800 years; /kloc-plant pesticides such as sulfur, copper and oil were used 0/000 years ago. Demetin pesticide is the first in China. Li Shizhen's Compendium of Materia Medica in Ming Dynasty recorded more than 1890 kinds of drugs, many of which were pesticides to control crop diseases and insect pests. Chemical pesticides originated in Europe. 1874 DDT was synthesized by Zideqin in Germany. At that time, it was only for the study of the theory of organic chemicals. The insecticidal efficacy and practical value were 1936? 1939 was discovered by Miller in Switzerland. 1942 spread abroad. This is the most valuable synthetic insecticide found so far. 1825, the British physicist and chemist Faraday studied the synthesis and chemical properties of 666. But until 1942? Its insecticidal effect was not determined until 1943. This is another extremely superior pesticide. During the period of 1947, French chemist Chirade announced that his research on organophosphorus pesticides was successful, which marked that the development of pesticides entered an "efficient" era.

hope this helps

Who was the first inventor of pesticides? Insecticide is a kind of medicine mainly used to control agricultural pests and urban health pests. It has a long history of use, large dosage and many varieties.

Insecticides can be divided into: ① stomach toxicity according to the mode of action. It enters the digestive system through the mouth of insects and plays a toxic role, such as trichlorfon.

(2) contact killer. After contact with epidermis or appendages, it seeps into the insect body, or corrodes the wax layer of the insect body, or blocks the valve to kill pests, such as pyrethroids and mineral oil emulsions.

③ Fumigating agent. Use the volatilization of toxic gas, liquid or solid to produce steam to poison pests or bacteria, such as methyl bromide.

④ Internal inhalation of pesticides. It is absorbed by seeds, roots, stems and leaves of plants and transported to the whole plant. In a certain period of time, precursors or their activated metabolites feed on plant tissues or suck plant juice with pests and enter insects, which plays a toxic role, such as dimethoate.

According to the toxicological effect, it can be divided into: ① nerve agent. It acts on the nervous system of pests, such as DDT, parathion, carbofuran and pyrethrins.

(2) Respiratory poisoning. Respiratory enzymes that inhibit pests, such as cyanohydrogen acid.

③ Physical poisoning. For example, mineral oil can block the valve of pests, and inert powder can grind the epidermis of pests and kill pests.

④ Specific pesticides. It causes abnormal physiological reactions of pests, such as repellent to keep pests away from crops, inducer to lure pests with sex or bait, antifeedant to inhibit their taste and stop eating, sterile agent to make one male and one female sterile or both male and female sterile, and insect growth regulator to affect the growth, metamorphosis and reproduction of pests.

According to the source, it can be divided into: ① inorganic and mineral pesticides. Such as lead arsenate, calcium arsenate, sodium fluorosilicate and mineral oil emulsion.

Generally, this kind of insecticide has low efficacy and is easy to cause phytotoxicity to crops, while arsenic is very toxic to people. Therefore, most organic synthetic pesticides have been eliminated since they were widely used.

② Botanical pesticides. About 1000 plants in the world are more or less toxic to insects.

Pyrethrum, derris and tobacco are widely used. In addition, some plants also contain active substances similar to juvenile hormone, precocious hormone and molting hormone.

For example, camptothecin isolated from the root bark, bark or fruit of Camptotheca acuminata has a strong sterile effect on Dendrolimus punctatus. ③ Organic synthetic pesticides.

For example, DDT, HCH, endosulfan, toxaphene, etc. DDT and HCH used to be two pesticides with large output and wide application, but they were banned or restricted in many countries since the early 1970s because of their easy accumulation in organisms. There are more than 400 varieties of organophosphorus pesticides such as parathion, trichlorfon and dimethoate, and the output ranks first among pesticides; Carbamate, such as carbaryl and carbofuran; Pyrethroid fenvalerate, deltamethrin, etc. Chlordimeform and dimehypo of organic nitrogen. ④ Insect hormone insecticides.

Such as various juvenile hormones and sex pheromone analogues. (See Insect Hormone Pesticide). The action mechanism of a few traditional pesticides, such as mineral oil emulsion, is mainly to play a physical insecticidal role on the body surface, while most organic synthetic pesticides enter the pests, interfering or destroying the normal physiological and biochemical reactions in some parts.

Some enter the digestive tract, penetrate into the blood through the mouth, some pass through the epidermis, and some pass through the stomata and trachea. Drugs that enter the body have biochemical reactions with various enzyme systems in pests. Some reactions make drugs degrade and lose their toxicity, but some drugs are activated to enhance their toxicity. Undegraded drugs (or active compounds) exert toxic effects in some parts due to different mechanisms, such as the nervous system or cells. Recently, Eden Bioscience Company has successfully developed a new crop production and protection technology.

This new technology will increase the output of crops, make them cleaner and more conducive to human health. The first application product developed by EDEN Bioscience using this technology is a voice product called Messenger (R).

It provides an effective new tool for crop growers, enabling them to control crop growth, reduce diseases and increase yield. This tool can also kill pests, including tiny nematodes. In this way, crop growers can reduce or not use chemical pesticides harmful to the environment, thus reducing environmental pollution, improving crop yield and producing healthier products.

At present, the company is applying for a sales license for this new product. The US Environmental Protection Agency will complete the registration of this new product in a few weeks.

The invention relates to a preparation method of an insecticide, which utilizes the large adsorption capacity and slow release function of nano silicon-based oxide to enable the insecticide to be released from the nano silicon-based oxide for a long time. Overcomes the shortcomings of the prior art, such as short pesticide residue period, instability to light, easy decomposition and failure, certain harm to human body caused by the infiltration of effective components into space, and certain pollution to the environment caused by residual indecomposable components.

This method provides a way to prepare this insecticide.

4. When was 4.HCH insecticide invented? HCH powder, scientific name HCH cyclohexane, is a white powdery solid.

1967 September 12, Shandong Provincial Department of Chemical Industry approved Qingdao Chemical Plant to build a production plant with an annual output of 1800 tons of HCH raw powder. 1968 was installed in the first half of the year, and the one-time trial operation was successful. The product quality is qualified. In that year, the output was 494 tons, and it was expanded to 5000 tons in 1977.

BHC powder is a relatively strong insecticide, which is widely used for the insecticidal effect of various crops in rural areas. Due to the poor living conditions and poor sanitation of urban residents, there are many bedbugs, cockroaches and lice, so urban residents also use BHC powder to kill these pests.

HCH powder is seriously polluted, toxic and harmful, flammable and explosive. After the reform and opening up, scientific research has made great progress, and many new pesticides have come out, so BHC powder has been replaced.

1983, the relevant state departments decided to cancel the production of bhc powder nationwide, and this pesticide withdrew from the historical stage.

5. Tell me about the background of pesticide invention. Pesticides are drugs used to treat crop diseases and insect pests, and there are many kinds.

Pesticides originated in China. 3000 years ago, our people began to fight against locusts and moths; /kloc-using mercury, arsenic and veratrum before 0/800 years; /kloc-plant pesticides such as sulfur, copper and oil were used 0/000 years ago.

Demetin pesticide is the first in China. Li Shizhen's Compendium of Materia Medica in Ming Dynasty recorded more than 1890 kinds of drugs, many of which were pesticides to control crop diseases and insect pests.

Chemical pesticides originated in Europe. 1874 DDT was synthesized by Zideqin in Germany. At that time, it was only for the study of the theory of organic chemicals. The insecticidal efficacy and practical value were 1936? 1939 was discovered by Miller in Switzerland.

1942 spread abroad. This is the most valuable synthetic insecticide found so far.

1825, the British physicist and chemist Faraday studied the synthesis and chemical properties of 666. But until 1942? Its insecticidal effect was not determined until 1943.

This is another extremely superior pesticide. During the period of 1947, the French chemist Hiladel announced that his research on organophosphorus pesticides was successful, which marked that the development of pesticides entered an "efficient" era.

6. What did Swiss scientists invent to kill insects Answer: Swiss scientists (paul miller) invented (pesticide "DDT") to kill insects.

1939, pesticide was invented. At that time, Swiss scientist paul miller discovered that a chemical called "DDT" (dichlorodiphenyltrichloroethane) was a powerful pesticide.

Insecticide (English: Insecticide. Insecticide) is mainly used to control agricultural pests and urban health pests. It has a long history of use, large dosage and many varieties. In the 20th century, with the rapid development of agriculture, pesticides greatly increased agricultural output. But almost all pesticides will seriously change the ecosystem, most of them are harmful to human body, and some will be concentrated in the food chain.

7. Tell me about the background of pesticide invention. Pesticides are drugs used to eliminate crop diseases and insect pests, and there are many kinds.

Pesticides originated in China. 3000 years ago, our people began to fight against locusts and moths; /kloc-using mercury, arsenic and veratrum before 0/800 years; /kloc-plant pesticides such as sulfur, copper and oil were used 0/000 years ago.

Demetin pesticide is the first in China. Li Shizhen's Compendium of Materia Medica in Ming Dynasty recorded more than 1890 kinds of drugs, many of which were pesticides to control crop diseases and insect pests.

Chemical pesticides originated in Europe. 1874 DDT was synthesized by Zideqin in Germany. At that time, it was only for the study of the theory of organic chemicals. The insecticidal efficacy and practical value were 1936? 1939 was discovered by Miller in Switzerland.

1942 spread abroad. This is the most valuable synthetic insecticide found so far.

1825, the British physicist and chemist Faraday studied the synthesis and chemical properties of 666. But until 1942? Its insecticidal effect was not determined until 1943.

This is another extremely superior pesticide. During the period of 1947, the French chemist Hiladel announced that his research on organophosphorus pesticides was successful, which marked that the development of pesticides entered an "efficient" era.

8. Provide some development history of pesticides. Before 2500 BC, humans began to use pesticides to prevent crops from being damaged.

The earliest application of pesticides was spraying elemental sulfur in Sumer, Mesopotamia about 4500 years ago. Homer, an ancient Greek poet, once suggested using burning sulfur as fumigant.

Pliny the elder in ancient Rome once mentioned using arsenic as insecticide; In 79 AD, Mount Vesuvius erupted, and Pliny Sr died of volcanic smoke with the smell of burning sulfur, thus truly demonstrating the non-selective poisoning effect of sulfur smoke. In the15th century, toxic chemicals such as arsenic, mercury and lead were used on crops to kill pests.

/kloc-in the 0/7th century, nicotine and sulfate were extracted from tobacco and used as pesticides. /kloc-two natural pesticides, pyrethrum and rotenone, were introduced in the 0/9th century.

Pyrethroids are extracted from chrysanthemum plants, and rotenone is extracted from the roots of tropical plants (mainly rotenone). 1939, DDT was found to be a very effective pesticide in paul miller.

It soon became the most widely used pesticide in the world. However, in the 1960 s, it was found that DDT hindered the reproductive ability of many fish-eating birds, thus posing a great threat to biodiversity.

Rachel carson and her best-selling book Silent Spring elaborated on the great influence of chemical pesticides and pesticides on the food chain and ecological environment. More than 86 countries have banned the use of DDT, but in some developing countries, DDT is still used to kill mosquitoes and other insects as vectors of infectious diseases to prevent malaria and some tropical diseases.

Since 1950, the consumption of pesticides has increased by 50 times, and the annual consumption is about 2.5 million tons.