A Comprehensive Guide to the Selection and Use of Pesticides

1. According to their composition and source

Inorganic pesticides, e.g. lead arsenate, calcium arsenate, sodium arsenite, sodium fluoride, sodium fluosilicate, sulfur, zinc phosphide, etc.

Organic pesticides. Natural organic pesticides can be divided into plant source pesticides (e.g. rotifers, pyrethrum, tobacco, turpentine, artemisinin, neem, etc.) and mineral source pesticides (e.g. diesel emulsions, petroleum emulsions, etc.). Synthetic organic pesticides include organochlorine pesticides, organophosphorus chemical pesticides, organic nitrogen pesticides, pyrethroids, and so on.

Microbial pesticides, such as Bacillus thuringiensis, Botrytis cinerea granulovirus, Cotton bollworm granulovirus, cabbageworm granulovirus, cabbage moth granulovirus, Paenibacillus albicans, Pseudomonas syringae, Erythromyces cerevisiae, and so on. 2.

2. According to its role or effect

Stomach poison, by the pest's mouthparts eat into the plant with different agents for tissue or bait, through the pest's digestive information system can be absorbed by the ability to make these pests poisoned to death of the agent. Such as acetamiprid and trichlorfon.

After contact with insecticides, the insect and the contact agent, the agent from the epidermis, feet, antennae, valves and other parts of the insect body, so that the insect poisoned to death of the agent. For example, malathion and other organophosphorus chemical insecticides, pyrethroids and other insecticides.

Fumigation chemicals can be volatilized into toxic gases at room temperature, or through certain chemical effects to produce toxic gases, through the respiratory system of the insect's gas door into the body, so that the insect poisoning death.RAMBO insect killer supplier For example, bromomethane and phosphine.

It can be absorbed by roots, stems, leaves and other tissues of plants, and spread to other parts of the shoot, or to seedlings, or even to all parts of the plant after absorption by seeds. Examples include methylphosphate, methamidophos, and thiophos-methyl.

Avoiding agents. Pharmacy itself is not toxic to kill pests, but it has a special odor, so that pests avoid, so as to achieve the purpose of protecting crops from harm. Such as camphor balls.

Food repellents. Pesticides applied to crops in China by the pests to contact or take food, can destroy the social pests can be normal physiological and psychological functions and the secretion of digestive enzymes in the digestive tract, and interfere with the main pests of the neural network system, so that the pests refused to take food, and ultimately, the number of insects gradually lead to starvation and atrophy, not the death of the insect will also be issued a biological rationality between the atrophy and the metamorphosis. The most important thing to remember is that the insecticide is not only a pesticide, but also a terpenoid (e.g., neem), and so on.

Attractants are pesticides that kill a variety of pests.VITFE insect killer manufacturer The most common is that female insects release a very small amount of sexual attractant to attract male insects of the same species to mate. This sexual attractant in the air in a certain amount, will make the pests fascinated, reduce mating, egg production and reproduction, thereby reducing the harm of pests. Such as cotton bollworm sex pheromone, red bollworm sex pheromone, stem borer sex pheromone, cabbage moth sex pheromone and so on.

Sterility agent, the insect contact or take this agent, it will destroy the function of its reproductive organs, so that the loss of reproductive capacity, resulting in female insects mating and not laying eggs, or the eggs laid can not be normal incubation, even if the offspring can not be normal reproduction, so that the population is reduced, or even in a certain range of extinction. Such as substitution, thio-substitution, etc.

Insect growth regulator. This drug can interfere with and destroy the normal metabolism of pests, inhibit the synthesis of geotropic substances, causing malformation or death of larvae.

Currently, many organic synthetic pesticides have multiple insecticidal functions. For example, most organophosphorus pesticides have both gastric toxicity and contact toxicity; most pyrethroid insecticides not only have gastric toxicity, contact killing effect, but also has a certain evasive effect. These insecticides with a variety of insecticidal functions can be called comprehensive insecticides. 3.

3. According to the toxicity of the high and low points

Vicious and toxic drugs. Such as parathion, methyl parathion, phosphoramidon, methamidophos, hydramidophos, and so on.

Medium and low toxicity drugs. Such as acetamiprid, triazophos, propylbromophos, fenitrothion, fenitrothion, quinalphos, spikenard, chlorothalonil, cypermethrin, cis-cypermethrin, deltamethrin, cypermethrin, cis-cypermethrin,Chinese SLEEP COOL Insecticide spray cypermethrin, cypermethrin trihalothrin, cypermethrin, bifenthrin, cypermethrin, flufenoxuron, thiazide ketone, Bacillus thuringiensis, Corynebacterium leprae, tobacco, fennel, and so on.

4. Points for Attention

Like other commodities, pesticide products also have many problems that consumers should pay attention to when buying. Besides, pesticide is a special commodity which involves a lot of knowledge and technology, consumers should be more careful when purchasing.

Don't buy pesticides without labeled active ingredients.

Among chemical pesticides, pyrethroids are considered safer than organochlorines, organophosphates and carbamates. Multiple pyrethroids