During the rainy season, the leaves of the grape seedlings fell off and the shoots died, what happen

In this case, it is likely to be due to some fungal infection of the plant, in which case it is likely to be blight or root rot.

This situation is mainly due to the fact that the moisture content of the soil in which the grapes are grown is too heavy, and it can be effectively alleviated by digging ditches around the soil to filter out excess soil moisture.

It must have been caused by too much water. Rotten roots.

It should be the rainy season, and there is too much rain, so it is common to encounter too much moisture, which is waterlogged. It is recommended that you replant some varieties that are resistant to waterlogging.

During the sports season, the seedlings are lost, and all the cognition is broken, because the nitrogen absorption of the roots of the grapes is weakened. Nitrogen deficiency can be effectively alleviated by applying a little nitrogen fertilizer.

Now in this situation, hurry up and take the medicine, 40% Fuxing (flusilazole) 8000-10000 times or the United States DuPont fungicide or Dasheng methyl tobuzin, these are good medicines, hurry up, once in three days, after two times, once in 7 days, and once in the next half month. Remember, planting fruit trees is generally prevented by pesticides, especially in the rainy season, especially in the rainy areas of the south, where you generally need to build a shelter for grapes.

The seedlings all died because the rain was so heavy that the roots were drowned.

This situation is likely to be caused by root rot, because it is easy to be infected with some root rot diseases in this season, and the damage to plants is relatively large.

During the rainy season, the grape seedlings also dropped, and what happened to the young shoots? Maybe it's related to the climate, because of the heavy rain, so, I'm going to die.

Refuse that the grape seedling leaves fell off the tender shoots and died, is it that this rain is too much, that soaked to the roots.

The grape seedlings have also fallen, and the shoots are all dead, so we must do it from its roots.

What's wrong, it's caused by waterlogging.

As long as the cross-sectional surface is green and there is sap oozing, the vine can survive. The dry branches of the vines can be caused by a lack of water, so it is necessary to water the soil to moisten it. It can also be caused by a lack of nutrients, in which case the vines need to be supplemented with diluted fertilizer.

When the vine is dry, prune a branch and check that the cross-section of the vine is fresh, if the surface of the cross-section is green and the juice oozes out, the vine can continue to survive. If the surface of the vine is dry, it will not survive.

The dryness of the vines may be caused by a lack of water, and the vines need to be watered in a timely manner, so that the soil is in a moist state. In the later stages of maintaining the vines, it is also necessary to strictly control the amount of watering to ensure that the soil is in a moist state.

If the vines are not fertilized for a long time, the vines will dry up due to lack of nutrients, and too much fertilization will cause the vines to have yellow leaves. When the fertilizer is too little, the diluted fertilizer needs to be watered in time, if it is caused by fertilizer damage, it is necessary to clean up the excess fertilizer in time, and properly watering to reduce the concentration of fertilizer in the soil.

If the vines are placed in strong light for a long time, it will lead to yellow leaves, so it is necessary to transfer the vines to a ventilated and cool place for maintenance, and when the light is too strong, it is necessary to block the strong light in time.

There may be the following reasons: 1. Caused by drought: The leaf scorching caused by drought mainly occurs on the base few leaves of newly planted seedlings or cuttings in the current year.

At first, the edge of the leaf turns yellow and dry, and then gradually expands, and in severe cases, the whole leaf will dry up and fall off. It is a large perennial tree with few dry leaves. 2. The cause of the sunburn:

The time for the grapes to grow new branches and leaves, mostly in May and June, this time is weak, and it is cloudy and rainy, the leaves are thin and tender, and after the rainy season, there are more sunny days, the sun is fierce, and the sultry cherry blossoms are rising, so that the edges of the grape leaves are easy to be burned by the scorching sun and scorched. 3. Caused by salt damage: the salinity content in the soil is high, and the leaves will turn yellow and dry up, especially in the spring drought ridge disturbance, the soil will return to alkali, and the seedlings will be more serious when they first germinate.

4. Caused by fertilizer damage: too much phosphorus fertilizer is applied in winter, and too little nitrogen fertilizer, and the leaves do not grow enough nitrogen fertilizer, and the leaves will be scorched. 5. Caused by drug damage:

Improper use of drugs or excessive concentrations can cause necrosis of leaf tissues and large areas of leaf scorching. 6. Caused by potassium deficiency: grape potassium deficiency will appear on the edge of the leaves.

1. Overwatering: Overwatering will cause water accumulation in the soil, making the branches and leaves of the grape vine yellow; 2. Grape vine blight: when infected, the branches are easy to be broken, and the branches above the diseased part will die of old and necrotic; 3. Downy mildew, yellow-brown lesions will appear at the onset of the disease, and all the branches and leaves will die when it is severe; 4. Powdery mildew, when powdery mildew occurs, all the leaves are white, which affects the photosynthesis of grape vines and makes the branches die.

The branches are dead, probably due to overwatering. In the high temperature environment of summer, excessive watering leads to serious soil waterlogging, and the lack of oxygen in the roots of the vine can not carry out normal physiological activities, which can easily lead to the condition of root burning of the vine, and when the situation is serious, the branches and leaves of the grape vine will die.

Grape vine branches and leaves may also suffer from vine leaf disease, vine leaf disease mainly harms branches or new shoots, in the early stage of the disease, the lesion spots are slightly sunken and reddish-brown, and then expand to black brown spots, the diseased vines are easy to be broken, and the branches above the diseased part will be senescent or even die.

When the vines are infected with downy mildew during the seedling period, the branches also die. Downy mildew mainly harms the leaves, in the early stage of the disease, there will be light yellow nearly polygonal lesions on the leaves, when the air is humid, the back of the leaves will produce moldy spots, and in the later stage, there will be continuous chloasma spots on the leaves, and the branches and leaves will all die when the situation is serious.

Grape vines infected with powdery mildew can also cause branch death, powdery mildew mainly affects leaves, stems and ears, the initial stage of the disease will show white spots, later will turn brownish-red, the lesions will cover the whole leaf, seriously affect the leaf photosynthesis, so that the branch necrosis condition.

Suspected vine blight, also known as vine cutting disease. It is mainly a pesting vine or new shoot. The base of the vine is susceptible to disease near the surface, and the initial lesions are reddish-brown, slightly concave, and then expand into large black-brown spots.

In autumn, the epidermis of the diseased vine is longitudinally filiform, easy to break, and many small black particles are produced on the surface of the diseased part, that is, the fruiting body of the pathogen. The main vine is infected, and the branches above the diseased part grow weak or die. The new shoots are infected, the leaf color turns yellow, the leaf margins are curled, the new shoots wither, and the leaf veins, petioles and tendrils often have black spots.

Prevention and control methods (1) Timely inspection of the branches, after the discovery of the disease, the light ones are scraped off with a knife, the heavy ones are cut off or sawed off, and the wounds are disinfected with Baume 5 degree stone sulfur mixture or 45% crystal stone sulfur mixture 30% times. (2) Strengthen vineyard management, increase organic fertilizer, loosen or improve soil, drain water in time after rain, and pay attention to anti-freezing; (3) It can be combined with the prevention and control of other grape diseases, and spray 80% sodium pentachlorophenol 200 300 times liquid Baume 5 degrees stone sulfur mixture before germination. In time for jetting in 5 June:

200 times Bordeaux liquid 2 3 times or 77% can kill 500 times of wettable particle powder, 50% copper succinate (DT fungicide) wettable powder 500 times liquid, 14% copper complex ammonia water 350 times liquid.

Now in this season, it's either dead or sunburned.

There are many reasons why grapes sprout and die after planting, such as light, temperature, right and wrong, and many other reasons.

The specific cultivation techniques are as follows:

1. Grapes are light-loving plants, which have high requirements for light, and the length of light hours has a great impact on the growth and development, yield and quality of grapes. When the light is insufficient, the new shoots grow weakly, the leaves are thin, the leaf color is light, the fruit spikes are small, the flowers and fruits fall more, the yield is low, the quality is poor, and the winter buds are poorly differentiated. Therefore, when planting, it is required to choose a place with good light, and pay attention to improving the wind and light conditions of the shelf surface, and at the same time, correctly design the row direction, row plant spacing and adopt reasonable shaping and pruning techniques.

2. Temperature is the most important meteorological factor affecting grape growth and fruiting. Grapes are warm temperate plants and require a fair amount of heat. The average monthly temperature required for the growing season (from bud to fruit ripening) is more than 1 0 degrees Celsius, and the accumulated temperature varies depending on the variety.

Temperature also has an important influence on the growth and fruiting process of the grapes. High temperatures can cause harm to grapes, but the degree is far less than low temperatures, which are a common problem in the world's viticulture, and low temperatures limit the cultivation area of grapes. Grapes are generally cultivated in the Northern Hemisphere between 20°51°N.

3. Water plays an important role in the life activities of grapes, and nutrients are dissolved in water and transported to various organs, so water is the carrier of nutrients through water transpiration, which regulates the body temperature of the tree and can promote the absorption of water and fertilizer. If the soil is too dry, it is difficult for roots to absorb water and nutrients from the soil, photosynthesis is weakened, and old leaves are prone to yellowing, shedding, and even plant withering and death.

Is it watered too much and the roots are waterlogged.