Experience has taught us that organophosphate pesticides are one of the most commonly used agricultural pesticides, most of which are highly toxic or moderately toxic, and a few are low toxic. Most species of organophosphate insecticides have a killing effect and are therefore also known as insecticides and acaricides. Organophosphorus insecticides have many advantages and a wide range of uses. Most organophosphorus pesticides have a broad spectrum of insecticidal effects. Commonly used organophosphorus pesticides in daily life are trichlorfon, dichlorvos (DDVP), dichlorvos calcium, and Bromphophos, malathion (marathon), fenthion.
Toxicity of organophosphate insecticides: Some varieties of organophosphorus pesticides are highly toxic to humans and animals, and there is a slight misuse during use, which can lead to poisoning accidents.
There are many varieties of organophosphate insecticides, and their performances vary widely. However, as insecticides, they generally have the following characteristics: six characteristics of organophosphorus pesticides:
1. High toxicity and easy detoxification.
Most varieties are highly toxic to humans and animals, and some species are highly toxic. They should be used safely and safely to avoid pesticide residue poisoning. Although organic phosphorus insecticide is highly toxic, it is easy to cause human and animal poisoning, but it has been widely used in high-efficiency antidote such as atropine and phosphate.
2. The insecticidal spectrum is wider.
At present, the commonly used organophosphorus pesticides can control a variety of agricultural and forestry pests, and some can be used to control sanitary pests and livestock and poultry ectoparasites.
3. Toxic to pests (including mites).
Higher than organochlorine pesticides, higher than or equivalent to carbamate insecticides, but lower than pyrethroid insecticides, generally 50 grams of active ingredient can be used in the field. The mechanism of insecticidal action is to inhibit cholinesterase activity in pests.
4. Diversified insecticide methods can meet a variety of needs.
Most varieties have contact and stomach toxicity. Some varieties have internal or osmotic effects. Some varieties have fumigation effect. They can be applied in various ways to prevent different types of agricultural and forestry such as above ground, underground, drill collar and sucking. Pests. Its insecticidal mechanism is to inhibit the activity of cholinesterase in the pest, destroy the normal conduction of the nervous system, and cause a series of symptoms of nervous system poisoning until death.
5. Most organophosphorus pesticides are easily decomposed under alkaline conditions and therefore cannot be mixed with alkaline substances.
6. Resistance is slower and more complete for crops.
Organophosphorus pesticides are indispensable in our daily life. They have high-efficiency killing performance, less resistance or cross-resistance, strong virulence to pests (including mites), and high efficacy of most varieties. The use concentration is low. Generally, the effect is better when the temperature is high.
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