What do you know about the contraindications for the use of pesticides?

Preamble: Pesticides can have the effect of killing pests. Since the pests have been eliminated, the toxicity is very large, and we must do a good job of protection in all aspects when using insecticides.

There are also many contraindications when using insecticides, and only by understanding these can we achieve a better insecticide effect, so I will share it with you below. <>

Insecticides are toxic, so the most important thing is to take personal protection before using insecticides. Wear protective clothing, gloves, and masks. After spraying pesticides, be sure to change these clothes in time and do a good job of ventilation.

And do a good job of cleaning up the body, don't ignore this step. Don't spray the insecticide for too long, and be careful about how long you spray. When mixing pesticides, be sure to pay attention to the various effects and choose different pesticides according to different crops.

When choosing pesticides, we must go to manufacturers that are trustworthy for big brands to buy, and we must not choose brands that we are not familiar with for the sake of greed. Prevent counterfeit and shoddy products, and pay attention to the production date and shelf life of pesticides. Read the instructions for use of the insecticide carefully and store the insecticide in a cool place.

Pay attention to the age of the insecticide and do not use expired insecticides. <>

Bacterial spores in insecticides, which are very fond of humid environments. Therefore, it is necessary to pay attention to the time of use, if the humidity from the field is high, the higher the efficacy of the medicine at this time. Especially when spraying powdered biosuppressants, it is necessary to pay more attention to the humidity problem in the field.

When spraying insecticides, we should pay attention to the use time, generally in the early morning and evening when there is dew, so that the insecticides can better stick to the crops and promote the reproduction of spores, improve the effect of the efficacy. It will be more effective to spray the plant in the morning when it is foggy or half an hour before spraying.

Be sure to prescribe the right medicine, choose some insecticides with good effects, and at the same time when using insecticides, do not mix them casually to avoid chemical reactions, and be sure to do a good job of personal protection when spraying insecticides, avoid contact with **, but also should avoid rainy weather and windy weather, try to choose to use insecticides on sunny days, so that it will not affect the effect.

When using insecticides, you should avoid rainy weather and windy weather, try to use it on sunny days to avoid affecting the effect of pesticides, and in the process of spraying insecticides, you must do a good job of personal protective measures, wear protective clothing, avoid contact with **, and do not mix casually to avoid chemical reactions.

First of all, when using it, do not mix it with other pesticides, be sure to pay attention to the efficacy of the drug at the same time, do not use it in hot weather or rainy weather, and be sure to put it in a clean environment when storing.

Don't choose more toxic, can't use pesticides often, and don't spray on people, you must pay attention to the surrounding environment when spraying, and you must also take protective measures.

Many people will use pesticides when planting or farming, which can effectively prevent pests and diseases, so that fruits and vegetables can grow better and look better. What are the contraindications for the use of common pesticides?

1. Impact on fruits and vegetables.

We must know that the medicinal properties of pesticides are very strong, and if they are not used properly, they will have an adverse impact on fruits and vegetables, which not only cannot prevent pests and diseases, but also may affect the growth and development of these fruits and vegetables. Therefore, when we spray pesticides, we must choose the right time, for example, there is an insecticide, which will produce a certain amount of damage when the melon and fruit seedlings are grown, and it must be used only after the plant grows and develops into adulthood, and the flowering period of some crops should also be avoided. This insecticide is chlorpyrifos, so when using this insecticide, you must choose the right time.

2. Prevent the decomposition of medicinal properties.

We must know that some pesticides are particularly easy to be decomposed, once the properties are decomposed, then the insecticides will not work, and timely spraying on plants will not be able to prevent pests and diseases. For example, many pesticides have strict requirements for temperature, humidity and sunlight. This insecticide is octanol, which will be decomposed by sunlight under strong light conditions, so this insecticide must be sprayed when the sunlight is relatively weak.

Farmers can spray it in the evening or before the sun comes out, which can be very useful.

3. Avoid drug damage.

The avoidance of pesticide damage here refers to the fact that there are some pesticides that will cause serious harm to plants if used improperly, that is, pesticide damage. Therefore, when using pesticides, it is also necessary to understand the instructions and spray the insecticides at the right time. For example, there is an insecticide called dichlorvos, which is sensitive to seedlings of corn, beans and melons.

So it's best not to spray these insecticides during the seedling period, and you can choose to spray them after they've grown into large plants.

The contraindications for the use of common pesticides are as follows: 1. Avoid using inferior agents. In order to ensure the quality of the medicine, it should be purchased from the regular manufacturer and the sales point of the drug to prevent counterfeiting and shoddy, and pay attention to the production date and service life of the drug and the reasonable storage of the drug to prevent expiration and invalidation.

2. Avoid using at low temperatures. The active ingredients of bacterial biopesticides are protein crystals and living buds. Under low temperature conditions, the spores multiply slowly in the pest's body, and the protein crystals are not easy to function.

3. Avoid dry environment. The spores of bacteria in bacterial bioinsecticides like a humid environment, so the higher the humidity in the field, the higher the efficacy, especially when spraying powdered biological agents. Generally, the fungus powder is sprayed in the early morning and evening when there is dew, so that the fungus can better stick to the stems and leaves of crops, and promote the reproduction of spores and improve the efficacy.

It is more effective to spray the spray in the foggy morning or to water the vegetables half an hour before spraying.

(1) Do not use sewage to dispense Sewage contains many impurities, which will block the nozzle, destroy the stability of the liquid medicine, and reduce the efficacy.

2) Do not use well water to dispense medicine, well water contains more minerals such as calcium and magnesium, which are easy to react with the liquid to form precipitate, thereby reducing the efficacy.

First of all, we must pay attention to personal protection, and we must wear protective clothing, gloves, masks, and after spraying insecticides, we must do a good job of ventilation, and then when mixing, we must not produce chemical reactions, and we must choose different pesticides according to different crops.