Toxicity of pesticides What is the interrelationship between virulence and efficacy?

1. According to the comprehensive toxicity evaluation of pesticides (technical drugs) commonly used in agricultural production (acute oral toxicity, transdermal toxicity, chronic toxicity, etc.), it is divided into three categories: high toxicity, poisoning and low toxicity.

1. Highly toxic pesticide (LD50 < 50mg kg): 3911. Sovietization.

Methyl. Finnitraxin, monocrotophos, phosphine, methamidophos, isopropylphos, phosphorus trioxide, dimethoate, zinc phosphide, aluminum phosphide, cyanide, carbofuran, fluoroacetamide, arsenic, metformin, cilixen, silisan, ulcer net, chloropicrin, pentachlorophenol, dibromocarbon, 401, etc.

2. Poisoned pesticides (LD50 between 50-500mg kg): borer, dimethoate, rice wind powder, thiophos, imiphos, bichiphos, hexahexa.

6. Hexachlorocyclohexane, toxaphene, chlordane, DDT, menacarb, menacarb, cicada powder, promethazine, methocarb, methocarb, dichlorvos, pyrethroid, Kewensan, Daowenjing, Dikefenone 402. Fumei arsenic, rice pepper clear, Tujunte, ginseng amine, ginseng amine, 2,4 drops, oat enemy, curare, etc.

3. Low-toxicity pesticides (LD50 > 500MG kg): trichlorfon, marathon, acemethamidophos, phosphine, dicofol, carbendazim, tobuzin, clodidan, mancozeb, formabi, vitellin, isopesticides, aluminum phosphide, chlorothalonil, herbicides, herbicides, norether, herbicides, chlorpromazine, dimethyl chloride, chlorurea, diuron, fluoralin, bendasone, thatch, glyphosate, etc.

Pesticide poisoning can be caused by headache, dizziness, nausea, fatigue, abdominal pain, etc., and severe cases include cramps, dyspnea, coma, incontinence, and even death.

2. The nitrate ingested by the human body comes from contaminated vegetables, and nitrate is the precursor of nitrosamines, which are recognized as the three major carcinogens at home and abroad.

Heavy metals such as mercury, arsenic, lead, cadmium and other heavy metals in municipal garbage, sewage and chemical phosphate fertilizers are important carcinogenic factors in the nervous system, respiratory system and excretory system.

Organochlorine pesticides accumulate in human fat and induce liver enzymes, which is one of the causes of liver cirrhosis and swelling.

Habitual headaches, dizziness, fatigue, sweating, depression, memory loss, hair loss, weakness are the hidden effects of poisonous vegetables and are the precursors of various cancers and other diseases;

Long-term consumption of contaminated vegetables is an important cause of cancer, arteriosclerosis, cardiovascular diseases, fetal malformations, stillbirth, early death, premature aging and other diseases; (Most people don't experience symptoms immediately after eating harmful vegetables.) Poisons accumulate in the human body, and over time can lead to serious consequences. ）

A notable trend is the increasing incidence of cancer and the fact that it is younger and younger, which is largely related to the consumption of contaminated vegetables.

Generally, it can be divided into three kinds of toxicity, namely high toxicity, poisoning, and low toxicity, and pesticide things have always been strange, and each pesticide may have different toxicity.

These are pesticides that work well and are very less toxic to humans and the environment.

If the questioner drinks it, what brand of pesticide will be fine if he washes his stomach?

If it exceeds 10 ml, despite prompt gastric lavage.

Ask what to drink, wash the stomach, there is no harm to the body.

Especially after you are rescued in time, then he will also have a great impact on your physical condition.

Question: Are there any non-pesticides?

Any pesticide is fatal to the human body, even if the rescue is timely, it will cause some sequelae, and some will cause lifelong discomfort, so you must not drink pesticides easily.

If there's something that's best to talk about it in person, scaring the other person tends to push things in the opposite direction.

Question: If you don't have any other medicine, you will be fine if you drink it and wash your stomach.

I didn't understand what the question meant.

After drinking each pesticide, it will be toxic to the body, and when the drug toxicity is relatively high, it will cause death after drinking.

Ask what to drink, drink less, and there will be nothing wrong with gastric lavage in time.

Generally speaking, the toxicity of fungicides is low. Please refer to the label on the packaging for details. Slightly toxic.

Pesticides have to peel off their skin without dying after drinking, which is extremely harmful to internal organs and other organs, and it is easy to leave various sequelae. It is not recommended.

High toxicity: 50 100 mg kg body weight, such as dichlorvos. Poisoning:

100 500mg kg body weight, such as dimethoate. Low toxicity: 500 to 5000 mg kg body weight, such as malathion.

Slightly toxic: 5000 to 15000mg kg body weight, such as dithion.

The toxicity of pesticides commonly used in agricultural production is generally divided into three categories: high toxicity and low toxicity.

Many producers are depressed. Because they are using the same herbicide, but the effects are very different, and even drug damage can occur. Shu Rong, an expert in agricultural science and technology, emphasized that the effect of herbicides is not only the effect of the herbicide itself, but also closely related to the environment in which it is used.

We share seven factors that affect the effectiveness of pesticides. Composition, physicochemical properties, and pesticide dosage form affect efficiency. Different dosage forms of the same ingredients and content will be different, and the production process and production capacity of CADA preparations will be different, and the effect will be different.

At the same time, it is not excluded that some companies raise questions about the content and secretly reduce the content, which affects the efficacy of the drug. In general, high temperatures are good for the absorption of liquid herbal products with better results. Of course, the higher the temperature, the better.

The correct time to use is: In high temperature time, it is recommended to use it before 11 am and 11 pm.; It is recommended to keep the temperature low between 10 am and 15 pm.

When it comes to preparing pesticides, many people don't have a standard preparation standard, only usam fuzzy utensils, such as bottle caps used for preparation. Therefore, it is easy to make the concentration of pesticides too large and beyond their capabilities, and in addition, some people believe that the higher the concentration, the better the pesticide control effect.

When you use pesticides, if the concentration is high and there is little water, it is difficult to spray the whole plant, which can easily cause damage to the drug. Practice has fully proved that the effect of spraying is indeed different in different time periods. On a sunny day, spraying numa on a slightly drier afternoon may cause the sprayed pesticide to form a film in the attachment before sunset, oh.

Pesticides sprayed under these conditions work best at this time. Spraying at this point also prevents the high temperature from penetrating into the sprayer.

Change the habit of spraying pesticides and improve the quality of spraying. According to the size of the fruit tree and the number of leaves, the pesticide can be sprayed fairly, and the amount of the liquid medicine should be controlled, according to the order of cima down and inder out, spray the liquid medicine before and after the blade, the liquid medicine should be uniform and thoughtful, and no short spray or heavy spray. It is best to have all the leaves stained with a liquid drug that does not have water droplets.

If you can make sure that the branches are not leaking, that there is medicine in the leaves, and that there is no flow, you have to be a master.

The virulence of a pesticide refers to the ability of a pesticide to damage an organism after it acts on the target organism.

Toxicity refers to the degree of toxicity of pesticides to humans and animals, and does not represent the degree of toxicity to pests and diseases.

According to China's grading standards, toxicity can be divided into five grades: highly toxic, highly toxic, poisonous, low toxic, and slightly toxic.

Efficacy refers to the pest itself, while virulence refers to the toxicity to humans and livestock.

Pesticides have a control effect on pests, except for some specific insecticides, basically because the agents have a direct poisoning or toxic effect on organisms. The degree of toxicity of pesticides is often evaluated by toxicity or efficacy. Virulence refers to the nature and extent to which the agent itself has a direct effect on different organisms.

Generally, under relatively strict control conditions, a measure of various pesticides is given under relatively strict control conditions, using precise test methods, and adopting standardized breeding test insects or strains and weeds, as an evaluation or comparison standard. Virulence determination is generally carried out indoors, and the measured results generally cannot be directly applied to the field, but can only provide a reference for prevention and control. The efficacy is the result of the combined effect of the drug itself and a variety of factors.

Different dosage forms, different host plants, different pest control objects, different use methods and various field environmental factors are closely and inseparably related to the effect of pesticides. The efficacy is mostly tested under or near field conditions in close combination with the actual production. Therefore, it has practical value for prevention and control.

Virulence and efficacy have different meanings, but they are interrelated and complement each other.

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