Don t you need to treat insects after the grape is bagged?

Grape bagging is generally sprayed before it is done.

After the grapes fall physiologically, when the fruit grows to the size of a bean, it is thinned and bagged immediately after the panicle. Before bagging, the fruit is fully sprayed with insecticides and fungicides allowed to be used in pollution-free food, and the fruit is sprayed on the same day after the liquid medicine is dried.

Before bagging, the grapes should be shaped and pruned, mainly to remove the overly dense branches, re-cut the weak branches, and do a good job of wiping and tying the vines. Grapes are left with 1 ear per new shoot, and 50 to 60 grains per ear.

In addition, soil improvement should be strengthened before bagging, and the application of high-quality soil miscellaneous fertilizer should be increased, and micro-fertilizers such as borax and zinc sulfate should be applied at the same time, and nitrogen fertilizer should be the main fertilizer for top dressing, so as to promote the early growth and development of fruit trees. Generally, watering is carried out before bagging to maintain the soil moisture content at 70 75 of the maximum water holding capacity in the field

The role of grape bagging.

1. Prevent and alleviate fruit diseases.

The bagging grape fruit is isolated from the outside world by the fruit bag, and the physical method is used to block the channel for the spread of germs from other objects to the fruit ear and fruit, reduce the chance of disease and insect infection on the fruit, and effectively prevent the occurrence of black pox, anthracnose, white rot, downy mildew and other occurrences on the grape fruit.

2. Reduce the amount of pesticides used and reduce pesticide residues.

Grape bagging will greatly reduce pesticide residues in fruits, which is an important measure to produce safe food and increase the trust of agricultural products, which has far-reaching significance. Practice has proved that during the grape growing season, the disease prevention link of bagging viticulture can reduce the use of drugs 4-5 times.

3. Improve the surface finish.

After the grape fruit is bagged, the fruit is in a small environment relatively isolated from the outside world, the temperature, humidity and humidity are relatively stable, and the light intensity is reduced accordingly, which delays the aging of fruit epidermal cells, cuticle and cell wall cells. At the same time, the fruit in the bag can avoid wind and rain, dust, chemical pollution, mosquitoes, flies and insect pests and bird damage. The bagged grapes have a smooth surface and a thick and uniform powder, which improves the appearance quality.

4. Improve the rate of excellent fruit and increase economic benefits.

For bagging grape fruits, flower thinning and fruit thinning, inflorescence and fruit spike treatment should be carried out before bagging, which can greatly improve the excellent fruit rate of grape fruits; Secondly, grape fruit bagging can significantly improve the appearance quality and commodity value of grape fruits.

5. Reduce fruit cracking.

The severity of the grape fruit is first and foremost related to the variety, and secondly to the environmental conditions, mainly the moisture conditions. For grape varieties with severe fruit cracking, the fruit bag prevents the skin from absorbing water directly, and at the same time keeps the humidity of the surrounding environment relatively stable, which can reduce the degree of grape cracking.

6. It has a certain protective effect on bird damage and hail.

Bagging is mainly to prevent the leaves from being damaged by man-made injuries or wind and rain, but bagging does not prevent the leaves from being harmed by pests and diseases, and it is still necessary to control pests.

It is necessary to treat, because bagging is only for the sake of making the grapes more aesthetically pleasing, and not treating insects will cause serious losses.

Yes, because there may be cracks after the bag is covered.

Grapes are a delicious and nutritious fruit, but during the growth process, they are often attacked by pests and diseases, and they need to be sprayed to protect their growth and quality. However, there is one way to preserve the quality of the grapes without the need for pesticides, and that is bagging.

Bagging is to put a fine bag on the grapes, which plays a role in preventing insects and diseases. This avoids drug residues, reduces environmental pollution, and reduces safety risks to consumers.

However, there are also some drawbacks to the mountain spoiler bag. First of all, the cost is higher because of the need to purchase additional bags and manual bagging, which increases the production cost. Secondly, an excessively confined environment can also lead to damp rot of grapes.

Overall, bagging is a viable way to avoid drug contamination, but there are trade-offs between costs and benefits for both the producer and the consumer. From the perspective of environmental protection and food safety, bagging is beneficial and harmless, and it is also hoped that this good way of bagging will be more widely promoted and applied.

Summary. Pest control is required before bagging the grapes to ensure the quality and yield of the fruit. Commonly used pesticides include fungicides and insecticides, and the specific pesticides to use should be determined in combination with factors such as local climate, environmental conditions and types of pests and diseases.

Here are some of the potions that will be used:1Fungicides:

Common fungal diseases during grape growth include gray mold and black rot. Broad-spectrum fungicides such as carbendazim can be used to prevent and treat these diseases. 2.

Insecticides: The main pests of grapes are whiteflies, leaf rollers and aphids. They can be controlled with insecticides such as trichlorfon and dimethoate.

3.Plant growth regulators: Sometimes plant growth regulators are also needed to control the growth and development of grapes, for example, paclobutrazol, Corvey and other agents can be used.

It should be noted that when using the drug, it should be used in strict accordance with the instructions on the instructions, and do not overuse or use expired drugs. At the same time, it is necessary to choose environmentally friendly low-toxicity or non-toxic insecticides and fungicides to ensure the safety and reliability of the fruit.

Pro-grape pest control is required to ensure fruit quality and yield before bagging grapes. Commonly used pesticides include buried fungicides and insecticides, and the specific pesticides to use should be determined in combination with local climate, environmental conditions and types of pests and diseases. Here are some of the potions that will be used:

1.Fungicides: Common fungal diseases during grape growth include gray mold and black rot.

Broad-spectrum fungicides such as carbendazim can be used to prevent and treat these diseases. 2.Pesticides:

The main pests of grapes are whiteflies, leaf-curling moths and aphids. They can be controlled with insecticides such as trichlorfon and dimethoate. 3.

Plant growth regulators: Sometimes plant growth regulators are also needed to control the growth and development of grapes, for example, paclobutrazol, Corvey and other agents can be used. It should be noted that when using the drug, it should be used in strict accordance with the instructions on the instructions, and do not overuse or use expired drugs.

At the same time, it is necessary to choose environmentally friendly low-toxicity or non-toxic insecticides and fungicides to ensure the safety and reliability of the fruit.

These medicines seem to be old medicines.

Yes, these are all medicines that can be bought on the market, as long as we can carry out effective prevention and sensitivity, whether it is an old drug or a new drug, it is a good medicine.