What to do if the grapes keep rotting after the rain

Measures to deal with rotten grapes in the rainy season

1. Management before rainfall

Deepen the ditch to ensure the smooth drainage of the ditch. If there are diseased fruits and leaves, they should be treated in a timely manner, and if they are too serious, they can be removed directly and taken out of the garden. Spray calcium, magnesium and trace element foliar fertilizer to improve the disease resistance of grape plants.

Spraying a protective fungicide, the tree protection general, with the new high-fat film, is ready for the rainfall.

2. Post-rainfall management

The most basic thing is to clean the orchard in time after the rainfall and do a good job of drainage, preferably while draining, loosening the soil, and cleaning the ditches at the same time to prevent excessive humidity in the vineyard.

Erase the new shoots in time to keep the grape trellis ventilated and light-transmitting. Appropriate spraying of double leaf protection and strong stem king can improve leaf function, enhance tree strength, and improve plant disease resistance. Also, don't be greedy and control the production in the park.

Other precautions.

1. Apply rain-sheltered cultivation technology. This technique is more commonly used to cover the top of the grapes with plastic film, and the water flows out of the vine when it rains.

2. Change the frame type. There are fence type, V-frame, scaffolding and other methods. Compared with various frame types, V-shaped frames, scaffolds and other methods can significantly improve the ventilation and light transmittance in the garden, reduce the occurrence of diseases, and improve the quality of fruits.

3. Cover with mulch. Mulching can reduce soil moisture, reduce orchard humidity and reduce the occurrence of diseases when rainfall comes.

The main reason for the growth of grapes with rotten fruit.

1) Bacterial infection, the main diseases that generally cause grape rot are white rot, anthracnose, and black rot in special years.

2) Malnutrition, weak trees, partial application of nitrogen fertilizer, lack of potassium, calcium, trace elements, or too many fruits, large load, resulting in weak plant growth and reduced disease resistance.

3) The climate is humid, the summer pruning is not timely, the orchard is closed, the ventilation and light transmission are poor, the rain is excessive, and the relative humidity of the soil and air is too large, which accelerates the infection and spread of diseases.

The main control method of grape rot.

1.Strengthen cultivation management.

1) Reasonable fertilization. The amount of pure nitrogen is controlled at about 750kg hm2, and the fertilizer should be applied in a timely manner to prevent the growth of the plant, and the ditch should be applied deeply, so that the organic fertilizer and the inorganic fertilizer are combined, and the nitrogen, phosphorus and potassium fertilizer should be properly matched, and the potassium fertilizer should be increased to improve the disease resistance of the plant.

2) During the growth period, it is necessary to pluck the topping in time and tie the vines in time to make the orchard well ventilated and transmitted, so as to reduce the onset of disease. At the same time, it is necessary to remove the secondary shoots in time to prevent the canopy from being too closed and reduce the occurrence and spread of diseases. After the rain, it is necessary to do a good job of draining the orchard to prevent water accumulation.

2.Eliminate overwintering pathogens.

1) After the grape harvest, remove the damaged shoots and old vines in time to enhance the permeability of the garden.

2) Combined with winter pruning, remove the secondary shoots, cobs, tendrils, stiff fruits, etc. left on the plant and shelf surface, and completely remove the dry branches and fallen leaves that fall on the ground and burn them in a concentrated manner.

3.Pharmaceutical prevention and control.

1) Sprinkle pesticides on the ground to eliminate the source of bacteria. For orchards with serious disease in the previous year, before the disease occurs, lime is sprinkled on the ground (the application amount is about 75kg hm2); Soil with a high pH value (above 7) can be sprinkled on the ground: 1 part of Fumeibi, 1 part of sulfur powder, 2 parts of lime, mix the three evenly, sprinkle on the ground, and the dosage is 15 30kg hm2.

2) Spray protection. Spray Bordeaux liquid every 10 to 15 days during the growing season to reduce the chance of infection.

3) Treat the disease and prescribe the right medicine. Once white rot, anthracnose and other diseases occur, it is necessary to prescribe the right medicine, but pay attention to the alternate use of drugs, not continuous single medicine. Alternative 80% mancozeb wettable powder, 50% Fumei double wettable powder, 40% mycloconazole wettable powder, 50% carbendazim wettable powder and other agents can be used alternately for prevention and control.

In addition, in order to prevent pesticides from polluting the ears after fruit coloring, the concentration of pesticides should not exceed the standard.

You can pick the best one, wash it and put some sugar, seal it in a jar, and make your own wine!

It's rotten, there's no way, you can't eat it.

1. What should I do if it rains when the grapes bloom?

If it rains during the flowering period, as long as the rain is not too heavy, it will not affect the growth, because the grapes themselves are pollinated with closed flowers, which can be fertilized and fruited normally, so there is no need to worry too much. However, if the rain is heavy, it will soak the anthers.

It leads to the rupture of pollen grains by water absorption, so that they cannot be fertilized normally, which will affect the fruit setting rate, affect the fruit, and easily lead to the situation of stuffy skin and small fruits. If the rain is heavy, it is recommended to build a rain shelter to avoid raining for a long time. In addition, foliar fertilizer should be sprayed in time during the management period to improve the resistance of the grapes to natural disasters.

capacity, foliar fertilizer and potassium dihydrogen phosphate.

As long as the damage is not too severe, it is also beneficial to the growth results.

2. Grape flowering management technology.

1. Timely topdressing: Grapes consume more nutrients than usual during flowering, and they need to be topdressed in advance. It is recommended to spray boric acid before flowering.

This leads to better flowering and increases fruit set.

2. Temperature and humidity control: The requirements for temperature and humidity during the flowering period are relatively high, and it is necessary to control it well if you want it to bloom and bear fruit better. The temperature is best around 28 degrees.

Stop watering after the flowers bloom and keep the humidity at about 50%. The greenhouse cultivation bureau should strengthen ventilation and loosen the soil for open-air cultivation.

Grape. 3. Timely thinning of flowers: After the grapes bloom, they should be thinned in time, according to the growth strength of the branches. Keep more than two inflorescences on each fruit branch before flowering.

Thin to dispose of. Finally, ensure that the strong fruit branches have one or two inflorescences, the medium strong branches have one, and the weak branches do not remain.

If the grape vines are too dense, it is easy to make the mountains and become stagnant water, and there may be rotten vines and rotten fruits. In addition, if the soil in which the grapes live is poorly drained, the grapes will be waterlogged and in severe cases, die.

Summer rainfall is mostly beneficial for grape growth, but as summer temperatures rise and transpiration intensifies, the plant's metabolism accelerates, which can be fatal if there is not enough moisture**. However, if the summer rains are flooded, it will affect the pollination of the grapes, affect fruit set, and more diseases will occur.

The right amount of rain in the spring is very helpful for the vines that have just budded, as they maintain moisture in the soil and encourage new shoots and shoots to thrive. However, if the spring rains too early, it is easy to cause frost when the spring temperature is low. In addition, if there is too much rainfall and the soil is not well drained, this will have a negative impact on the growth of the grapes.

Continuous rain affects the ripening of the grapes.

The sudden increase in rain and the excessive moisture content of the soil can cause some grape varieties to be in the bulking and coloring stages, which can seriously affect the coloring and cracking of the fruit.

It affects the quality of the grapes and is also prone to pests and diseases.

Continuous rainy days have an impact on grape seedlings, and they are susceptible to diseases such as grape downy mildew and chai disease, grape white rot, and anthracnose.

It does have an impact on the quality of the grapes, and it is also prone to pests and diseases.

Even rainy days can affect the ripening period of the grapes and make them prone to pests and diseases.

Continuous rainy days can cause grapes to rot, crack, defruiting, etc., delayed ripening, etc.

Rotten grapes can be used to make wine.

Ingredients for making wine: rotten grapes, sugar, bottles, cleaning gauze, glass jars.

How to make wine:

1. First wash and dry the grapes.

2. Put the washed grapes into a large bottle and crush the grapes by hand.

3. Put in the sugar at the ratio of two taels per catty, and stir well by hand.

4. Tightly cover the hole and slow the bottle cap, cover the mouth with a plastic sheet, tie it tightly and put it in a dark place, so that it can ferment naturally.

5. After 30 days, there is a very clear liquid and deposited grape miscellaneous in the bottle, and then filter it with clean gauze, and then put the wine into a glass jar.

Summary. If it snows or rains after digging the grapes, appropriate measures need to be taken to protect the remaining grape ears from rotting, mildew or freezing due to snow or rain. Here are some possible measures:

Covering the ears with a protective covering, such as plastic film or cloth, can protect the ears from water and snow and prevent moisture or snowflakes from entering the ears. Moving the ears indoors or in a sheltered place can prevent the ears from getting wet in snow or rain and reduce the possibility of cold damage to the ears. Spraying an appropriate amount of antifungal agent or fungicide on the ear can effectively prevent the ear from becoming moldy and rotting due to moisture.

For ears that have been damaged, they need to be cleaned up in time to prevent the rot germs on the ears from spreading to other healthy ears.

What to do when it snows after digging grapes, and what to do after it rains.

If it snows or rains after digging the grapes, appropriate measures need to be taken to protect the remaining grape ears from rotting, mildew or freezing due to snow or rain. Here are some possible measures: Covering the ears with a protective covering, such as plastic film or cloth, can protect the ears from water and snow and prevent moisture or snowflakes from entering the ears.

Moving the ears indoors or in a sheltered place can prevent the ears from getting wet in snow or rain, and reduce the possibility of cold damage to the ears. Spraying an appropriate amount of antifungal agent or fungicide on the ear can effectively prevent the ear from becoming moldy and rotting due to moisture. For the ears that have been damaged, it is necessary to clean them up in time to prevent the rot germs on the ears from spreading to other healthy ears.

It should be noted that the time of harvesting of grapes varies from region to region and under different climatic conditions, so it is important to choose the right time to harvest grapes according to the local climatic conditions and the characteristics of the grape variety, and try to avoid harvesting grapes in snowy or rainy weather.

The cultivation of grape key eggplant does have its technical content:

1. Observe the growth of grape leaves, and deal with the diseased leaves and yellow leaves found during the growth process;

2. The grapes are about to ripen, and they are prone to rotten fruit disease and fruit cracking disease, and they should not be watered too much during the ripening period;

3. Look at the face of the leaves, such as yellowing and weak, top dressing;

4. Grapes are prone to leaf spot and leaf blight, so apply pesticides in time.

Apple cracking is a physiological disease, which mostly occurs in the harvest period, and its symptoms are twofold: one is the cracking of the top of the fruit; The second is the dehiscence of the fruit pedicle. Usually compacted soil, poorly drained clay soil, waterlogged, arid soil has serious fruit cracking; Even rainy and sunny, sharp high temperature monotonous, and easy to crack fruit when rainy during the coloring period; The amount of fruit is large, and the fruit thinning is improper, which is easy to cause fruit cracking.

The prevention measures are as follows:

1. Adjust soil moisture. When the soil moisture changes dramatically, the soil permeability is poor, and the drainage is poor, it is necessary to take open channels or culverts to do a good job of drainage. At the same time, the physical properties of the soil were improved by deep turning and the application of organic fertilizer and lime to reduce the change of soil moisture.

2. Cover with mulch. The vineyard is covered with mulch, which not only prevents the roots from absorbing too much rainwater, but also prevents the evaporation of ground moisture, reducing soil moisture change. In times of drought, mulching should be linked to irrigation.

3. Adjust the amount of results. Trees with poor grape coloring or years with strong coloring and production have a lot of fruit cracking, so it is necessary to go through ear thinning, grain thinning, ear pinching, and adjusting the amount of fruit to reduce fruit cracking.

4. Cover the fruit. When the surface of the grape absorbs rainwater directly or from the roots, the fruit swells and presses, causing cracking. Therefore, the rainy day to take the rain shelter method, can effectively avoid the cracking of the fruit, the use of fruit bagging, can receive good results.

5. Cultivating and weeding. Cultivating loose soil can not only eliminate weeds, reduce the occurrence of diseases and insects, but also fluff up the soil, which has the effect of drought can improve moisture, waterlogging can dry moisture, and adjust soil moisture content. Usually 10-15 days of tillage, after the rain should be timely ploughing and scattering moisture.

6. Prevention and control of pests and diseases. Grape pest damage wounds are an important factor in grape fruit cracking, so it is extremely important to do a good job in the prevention and control of grape pests and diseases in time. Completely eliminate dead branches and fallen leaves, and burn or bury diseased leaves and fruits.

Spray 5 Baumé stone sulfur content before germination. When powdery mildew occurs, it can be sprayed with 25 powdery rust 1500 times, or 70 methyl tobuzin wettable powder 1000 times, sprayed 2-3 times, or 800 times of antibacterial special solution for prevention and control. For pest control, you can choose 1000-1500 times of dimethoate, or 1500 times of "1605" emulsion.

Absorbed too much water, stretched out.

In fact, as long as the rain is not too heavy and is not affected, the grapes are pollinated with closed flowers.

Some varieties will appear large and small grains due to rain erosion, and the pollen can complete the pollination and fertilization process a few hours after the anther breaks, but if the rainwater soaks the anthers, it will cause the pollen grains to absorb water and expand and rupture, and cannot complete the normal fertilization process, resulting in abnormal fertilization of some affected fruit grains, and small fruits will appear without falling. Generally, Eurasian species are heavier, and European and American species are lighter or absent.

If you are a little worried, you can spray fertilis grape foliar fertilizer in various periods of grape growth, the effect of natural disaster resistance is more obvious, cooling down in most parts of the country some time ago, it is the flowering period of fruit trees, my pear tree is in full bloom, sprayed with fertive leaf foliar fertilizer and potassium dihydrogen phosphate, the damage is not too serious, some are not sprayed!