What medicine is used to prevent rot when the grapes are almost ripe

There are two causes of grape rot, one is fertilization and the other is ventilation.

Correct application of organic or inorganic compound fertilizers can enhance the resistance of fruit trees to a variety of pests and diseases, and worsen the nutrition of stinging pests. Excessive nitrogen fertilizer, insufficient phosphorus, potassium and micro-fertilizer, and soil water accumulation will promote the occurrence of pests and diseases, resulting in fruit rot.

The branches and leaves of the grape trellis are too dense, the amount of fruit ears is too large, the ventilation and light transmission are poor, and diseases and pests are prone to occur, resulting in rotten fruits.

Spray plant growth regulators to improve leaf function, enhance tree vigor and improve disease resistance. Control the output and reasonable burden. After the rain, drain and loosen the soil in time, tie vines and tops in time, and ventilate and transmit light in the rack. Increase the application of potassium, calcium and other medium and trace elements and nutrient amino acid fertilizers.

In the event of white rot, anthracnose and other diseases, it is necessary to apply pesticides symptomatically, pay attention to the alternate use of pesticides, not continuous single medication, and prevent pesticides from polluting the ears after fruit coloring.

During the ripening period of grapes, this disease should be prevented and treated in time, showing brown water decay, spreading quickly and causing great harm.

What is the disease of yellow leaves? What kind of medicine is used?

Grapes begin to rot as soon as they are ripe, which can be solved by stopping watering and draining the stagnant water.

Grape rot when it is almost ripe This is grape white rot, commonly known as water rot or ear rot, is a major disease that occurs on grapes, especially before the grapes are ripe, if the weather is rainy, it is often prevalent, which can cause yield loss of more than 60%, and more than 90% in severe cases. It is a disease caused by the fungus white rot shield shell mold.

This problem can be solved by: rational fertilization: reduce the amount of nitrogen fertilizer and increase the amount of phosphorus and potassium fertilizer.

Pruning in time: Cut off the ears of the grapes that are infected or severely cracked. Stabilize the bracket: Stabilize the bracket with nylon rope to avoid bending the branches.

Why do grapes rot and lose grains? 1. The nutrient supply of the fruit is insufficient, such as boron, calcium, magnesium, and nitrogen deficiency, and the branches are vigorous. 2. Endogenous hormone imbalance.

Abnormal environment, disease, and lack of mineral elements can cause hormonal imbalance, and some people use ethephon to promote coloring, but if it is used too early, or the concentration is too high, it will aggravate the fruit drop. 3. Abnormal climate. Including drought, waterlogging, wind and rain, hail, 4, diseases, such as jug disease, canker disease, white rot will cause acorn drop.

There are many causes of grape rot, so it is necessary to eliminate grape rot, and then treat the symptoms, the more common is grape rot caused by excessive water and stagnant water. For this reason, it is generally necessary to reduce the humidity of the ground and drain the water in time after the rain, so as to reduce the incidence of this disease. Because there is stagnant water, it is easy to cause bacteria, and it is easy to breed mosquitoes, so it is naturally easy to cause grape rot, so for some low-lying terrain, it is indeed necessary to drain it in time.

Once the grapes are fruitful, they will choose to cover them in bags, so as to avoid the entry of many germs and mosquitoes, and can reduce the occurrence of grape rot。This practice is more commonly used, and now many growers will bag the grapes when planting grapes, so that the grapes can grow better, and there are no spots and can avoid some bacterial and insect invasion, which is a worthy choice and a good way to prevent the grapes from rotting. <>

The more grapes are not as fruit-bearing as possible, and too much load will lead to weak disease resistance, which will also affect the ventilation zone and light transmission, which will naturally lead to grape rot. Grape rot is indeed a very troublesome thing, so we must prune in time, for some grape trellis is not stable, we must choose to find some brackets to support, to prevent the vine from excessive load, and at the same time to expand a certain gap, to have a lighting and ventilation, so that it will be better. <>

The grapes must be at least 50 cm above the ground, if the grapes are too close to the ground, then it is easy to cause the grapes to rot, because it is easy for bacteria to invade. Planting is a technical work, you need to use more fresh food also need to pay more attention, if you can spread the mulch film that is the best, you should not pave the mulch film should raise the grapes to a judgment of caution, not too close to the ground, close to the ground is easy to have bacterial invasion.

Of course, it is also necessary to apply fertilizer reasonably to increase the disease resistance of the grapes in order to reduce the occurrence of this rot.

You should use the corresponding pesticides, then reduce the amount of water, lower the temperature, increase air circulation, and prune the rotten parts, so that you can **.

It can be ventilated frequently, or fertilized, or it can be written in a wide draft to carry out skillful use of pesticides, state filial piety or sufficient sunlight, so that it can be effective.

The roots should be cleaned up to a certain extent, and all the rotten parts should be pruned and excavated, and then the re-judgment should be given for planting, and the soil should have loose and good air permeability, and remember to control the environment every time.

<>1. Black rot: It mainly occurs in the fruit ripening period, which can lead to fruit rot and fall. 2. Acid rot:

It occurs mainly during the fruit coloring period, after which the fruit will exude juice with an acetic acid taste. 3. Botrytis cinerea: Botrytis cinerrea infects grapes, causing moldy dots on the surface of the fruit, which is easy to rot when the fruit is ripe.

4. Anthrax: small black spots in the shape of rings appear on the surface of the fruit, and orange-red mucus will appear at the small black spots when the environment is humid.

1. What is the cause of grape rotten?

1. Black rot.

1) The disease mainly occurs during the ripening period of the fruit, and the fruit will rot and fall after the disease.

2) It is recommended to sprinkle lime powder, sulfur powder, and formabi on the ground during planting to kill germs and pests and ensure that grapes can grow normally.

2. Acid rot:

1) The disease mainly occurs in the fruit coloring stage, and the prerequisite for the occurrence is that there is a wound on the fruit, and the juice will flow out of the wound after the disease, with an acetic acid smell.

2) It is recommended to cut off all the infected fruit ears and fruit bends.

3. Botrytis cinerea.

1) Grapes are infected by Botrytis cinerea, resulting in gray mold-like substances on the surface of the fruit, which are easy to rot when the fruit is ripe.

2) It is recommended to reduce the amount of nitrogen fertilizer and increase the application of phosphorus fertilizer and potassium fertilizer to provide sufficient nutrients for the plant and promote its healthy growth.

4. Anthrax.

1) The disease will cause small black spots to appear on the surface of the fruit, and orange-red mucus will appear at the small black spots when the environment is humid.

2) It is recommended to bag the fruit to prevent rainwater from splashing on the surface.

2. What are the prevention and control measures for grape rot?

1. Black rot.

1) Remove the source of overwintering, drain water in time, and increase organic fertilizer.

2) From June to September, spray 600 times of chlorothalonil liquid, or 800 times of 50% carbendazim, or 800 times of Tobuzin, or 1:1:200 times of Bordeaux solution.

2. Acid rot:

1) Plant disease-resistant varieties, rationally use or do not use hormone drugs, to prevent damage to the peel or cracking.

2) If the diseased particles are found, they should be removed in time and buried in a concentrated manner.

3) Since the beginning of the heading stage, spray 400 times of 80% Bordeaux solution, spray once every 10 days, and spray 3 times continuously.

3. Botrytis cinerea.

1) Before the budding of the plants in mid to early March, the whole garden was sprayed with 5 Baumé stone sulfur mixture.

2) Spray 600 times of 50% Fumei double wettable powder, or 300 times of 50% iprodione wettable powder.

4. Anthrax.

1) Cut off weak branches and diseased dead fruits in time, and bury them deeply or burn them in a concentrated manner.

2) Drain water in time, reduce humidity, tie vines and topping in time, and improve the ventilation and light transmission conditions between plants.

3) Before germination, spray 5 Baumé stone sulfur mixture; During the inflorescence separation period, 78% Kebo 800 times solution was sprayed; Before flowering leakage, spray 50% carbendazim 600 times; Before bagging, the ears were treated with 1200-1500 times of the solution.

1. Botrytis cinerea: the prevention and control of grape rot requires the application of phosphorus fertilizer and potassium fertilizer to increase the yield. 2. Anthrax:

Use a paper bag over the fruit to protect it from rain. 3. Acid rot: cut off the ears and fruits infected with the disease to avoid infection.

4. Black rot: sprinkle lime powder or sulfur powder around the grapes.

1. Botrytis cinerea

Grape rot may be caused by the plant infected with gray mold mold, gray mold will appear on the surface of the fruit, to prevent grape rot and fruit search, it is necessary to reduce the use of nitrogen fertilizer, increase the application of phosphorus fertilizer and potassium fertilizer, provide the plant with the nutrients needed for growth, make it more robust.

2. Anthrax:

The main disease of grape is anthracnose, which will cause the fruit to show small black spots in the shape of a ring, and orange-red mucus will appear at the small black spots in the humid environment.

3. Acid rot

Acid rot mainly occurs in the fruit coloring period of grapes, the prerequisite for the occurrence of the fruit is a wound, it will make the juice flow out of the wound and with acetic acid smell, the prevention and control of grape acid rot, the use of sharp scissors, the infected fruit ears and fruits are all cut off.

4. Black rot

When cultivating grapes, it is necessary to sprinkle lime powder, sulfur powder, Fumei and other agents around the ground to eliminate pests and germs and maintain the normal growth of grapes.