What are the pesticides commonly used in orchards?

Fungicides are commonly used. Planting fruit trees, especially in the rainy season or when they are about to bear fruit, will inevitably have some bacterial diseases, once bacterial diseases are found, then it is necessary to spray pesticides for control. There are many fungicides on the market, such as this barium polysulfide, which can have a good bactericidal effect.

Of course, some people will also choose to use Bordeaux liquid.

This drug is a broad-spectrum fungicide, which can have a good effect on a variety of bacterial diseases. <>

Insecticides will definitely be used next, and there are many types of insecticides, and you can choose this avermectin insecticide drug. When the fruit in the orchard is about to ripen, there will inevitably be some insects, so we should spray some pesticides to kill insects or even prevent them. Generally speaking, spraying some pesticides in advance for insect control is the best, when the insect pest occurs to spray, it may have a certain impact on the fruit, and some may cause the fruit to be unsightly, affecting the pulse, so it will directly affect our economic benefits, so it is best to choose to prevent in advance in the high season.

CypermethrinIt is also a commonly used insecticide in orchards. Some insects in the orchard will ovulate, and ovulation from the inside will generally choose on the roots or leaves, if some drugs are not used to effectively kill, then it is likely to lead to frequent harm, and even insect flooding. In addition, pesticides are used for too long and frequently, and insects will become resistant to this drug.

Therefore, when using pesticides, different varieties should be replaced. <>

ImidaclopridIt is a strong insecticide, with strong systemic absorption on the leaves, and the effect is particularly long, and it can have a good killing effect for some insects that bite the leaves. Like caterpillars, for example.

Ah, or rather, like this scale worm.

Ah, it can have a good killing effect, because this time the insect will gnaw some leaves, and it just so happens that this pesticide is strong and will remain on the leaves.

The more common pesticides in the orchard are stone sulfur mixture, avermectin, imidacloprid, acetamiprid, chlorpyramidale, fipronitr, spiromethyl, and kung fu methrin.

Fungicides, herbicides, growth regulators, insecticides, fiprofenon, these are very common and have a wide range of applications.

For example, there are insecticides, herbicides, and then acaricides, rodenticides, and fungicides, and these five pesticides are commonly used in orchards.

For example, there are gouache powder granules, and then it also includes emulsifiable concentrate, wettable powder, and then also includes suspension agent, water agent, microemulsion and so on.

These more commonly used pesticides are, water dispersible granules, wettable powders, emulsifiable concentrates, suspensions, water agents, concentrated emulsions, and microemulsions.

WP, water dispersible granules, water agents, suspensions, emulsifiable concentrates, emulsifiers, these are the types of pesticides commonly used in orchards.

WP: It is a dosage form that uses chemical fertilizer, inert filler and a certain amount of modifier to achieve a certain powder particle size after sufficient mixing and crushing according to the ratio.

Water-dispersible tablets: It is made by mixing solid chemical fertilizer raw materials with moist wattle, dispersants, viscosity enhancers and other modifiers and fillers, which are quickly dissolved and dispersed into granules after encountering water. Water-dispersible tablets have the characteristics of good liquidity, easy use, good storage reliability, and high composition of related ingredients, and have the advantages of wettable powder and granules.

1. Dimethoate is white and crystalline, with camphor smell, and industrial products are usually light yellow-brown emulsions. Melting point 51 52, boiling point 86 Pa, vapor pressure (kPa) MPa 25; It is stable in aqueous solution, but it is easy to hydrolyze when exposed to lye, and is converted into methyl sulfide isomer when heated. It is stable to sunlight and flammable in case of open flame and high heat.

It is decomposed by heat and releases toxic gases such as phosphorus and sulfur oxides. Slightly soluble in water, soluble in most organic solvents, such as alcohols, ketones, ethers, esters, benzene, toluene, etc.

2. Ruijinte original medicine is white powder at 23 o'clock. 20 relative density, melting point, vapor pressure Pa. Solubility in milligrams of water (pH7), acetone grams 100 ml, dichloromethane grams 100 ml, hexane grams 100 ml, methanol grams 100 milliliters, toluene grams milliliters.

The half-life in soil is 1 to 3 months, and in water it is 135 days. The photolysis half-life in water is 8 hours, and the photolysis half-life in soil is 34 days.

3. Azadirachtin white crystalline powder, odorless, extremely bitter taste. Melting point 244 245 (decomposition). Optical rotation.

Soluble in pyridine, acetone, ethanol, methanol, slightly soluble in chloroform, benzene, almost insoluble in petroleum ether and water. It is easy to hydrolyze under acid and alkali conditions, and easy to decompose under light. The emulsification and thermal storage properties of the preparation are stable and qualified.

Fourth, Nongmengte original medicine is white or light yellow crystals, slightly soluble in a variety of organic solvents, solubility (20 23): milligrams in water, 10 grams of acetone, 20 grams of cyclohexanone, 66 grams of dimethyl sulfoxide, 50 milligrams of hexane, 850 milligrams of toluene. However, the preparation is soluble in water and most organic solvents.

Stable at room temperature.

Try to use some insecticides, fungicides and herbicides, because this can be better for crops, and can also avoid multiple spraying of pesticides.

It is very easy to carry, and it is very safe, it is easy to mix with water, the effect is very good, and it is safe for the fruit, etc., these are the characteristics of pesticides.

The characteristics of pesticides are that they have strong lethality, have a good effect on crops, and have a very good sterilization effect, which can effectively kill the bacteria on crops and will not cause any harm to crops.

Generally, the effect of the medicine is relatively strong, and then the absorption effect is also special, and at the same time, it will not harm these insects, and then it can also control pests, and then it can also provide nutrients for crops.

In the winter, the fruit trees will enter a dormant period, at this time the resistance of the tree should be increased, and the resistance of the tree should be increased, and some pesticides should be sprayed, so that there will be fewer insects in the coming year.

It is necessary to choose the appropriate time for pesticide spraying, and to choose pesticides suitable for winter use, while paying attention to the effect of pesticides, the technology of pesticide use, and the nutrient loss of orchard water.

To do the work of prevention, but also pay attention to the use of pesticides, but also to choose suitable pesticides, at the same time to choose frost-resistant pesticides, pay attention to the specific use time of pesticides.

There are 7 types of pesticides commonly used, namely insecticides, fungicides, herbicides, acaricides, rodenticides, nematicides, and plant growth regulators.

Insecticides: It can control various pests, including insecticides, dimethoate, methamidophos and other drugs.

Fungicides: can prevent and control plant diseases and inhibit the growth of pathogens, including carbendazim, fenanin, zeb zinc and other drugs.

Herbicides: can control weeds, including herbicides, herbicides and other drugs.

1. Insecticides

1. Insecticides refer to agents that can control various pests (some agents have acaricidal effects), including dimethoate, methamidophos, insecticide, inulin-ulin, dichlorvos and other drugs.

2. Insecticides mainly exert the effect of killing insects through four ways: stomach poisoning, contact killing, fumigation and internal absorption.

2. Fungicides

1. Fungicides refer to agents that can prevent and control plant diseases and inhibit the growth of pathogens, including carbendazim, fenrustin, zebden, gram blast, Bordeaux liquid and other drugs.

2. Fungicides can protect crops from damage and eliminate invasive bacteria, and the main role of most of these drugs is to prevent the occurrence and spread of diseases.

3. Herbicides

1. Herbicides refer to agents that can control weeds, including green melon, herbicide, fluorin, herbicide and other drugs.

2. According to the herbicidal effect of herbicides, they can be divided into contact herbicides and systemic herbicides. Contact herbicides can only control annual weeds that germinate from seeds, while systemic herbicides can control perennial weeds.

3. In the case of excessive concentration, some herbicides will kill all weeds and crop seedlings, or cause pesticide damage to crops.

Fourth, acaricides

1. Acaricides refer to the agents used to prevent and control mites (such as red spiders), including mitetes, dicofol, dicofol, dicofone and other drugs.

2. Acaricides have a certain selectivity, and have different control effects on mites at different stages of development, and some agents have good contact killing effect on eggs, larvae and larvae, but the control effect on adult mites is poor.

5. Rodenticides

1. According to the mode of action, rodenticides can be divided into fumigants and stomach poisons.

2. According to the ** division, it can be divided into organic rodenticides, inorganic rodenticides, and natural plant rodenticides.

3. According to the characteristics of the action, it can be divided into acute rodenticide (single-dose rodenticide) and chronic anticoagulant (multi-dose anticoagulant).

6. Nematicides

1. It is suitable for vegetables, tobacco, fruit trees (including strawberries), forest trees and other plants, and can prevent and control various nematodes.

2. According to the chemical structure, such agents can be divided into halogenated hydrocarbons, dithiocarbamate, thiocyanides, and organophosphorus.

7. Plant growth regulators

Plant growth regulators refer to agents specially used to regulate plant growth and development, including chlormequatin, ethylene, gibberellin, naphthalene acetic acid and other drugs. These drugs have a similar effect to plant hormones and can promote or inhibit the growth and development of plants.