The high incidence of various diseases such as grape downy mildew, white rot, anthrax, etc. In the summer, downy mildew can lead to deciduous, dead branches, rotten fruit, and even death of grapes. Therefore, in the summer rainy season, we must strengthen the management of vineyards and prevent and treat diseases in time.
Clear Garden: If there is a disease in the vineyard and there is more rain at this time, it is necessary to clear the garden at any time and clear out the sick leaves, diseased branches and diseased fruits in the garden, and bury or burn them. At the same time, the weeds in the garden should be promptly removed. When cutting the diseased branches and fruit, the scissors should be cleaned and disinfected to prevent cross-infection.
Loose soil: In the summer and autumn rainy season, after heavy rain and heavy rain, the rain will cause the vineyard land to form a knot. Poor soil permeability. As a result, the grape root system is deprived of oxygen, the tree vigor is weakened, and the stress resistance is reduced, which makes it susceptible to disease. Therefore, to stop before the rain or rain. Timely cultivating the soil deeper. To improve the permeability of garden soil.
Treatment: Continuous rain or high temperature and humidity, the grapes are most susceptible to disease, should be fully observed once a day in the vineyard, see the initial disease, immediately symptomatic spraying. Such as downy mildew. If you see some of the park. Even if it is found on a grapevine, it is immediately sprayed.
Clear shoots: To pick up the grapes in time, wipe out the shoots in time. At the same time, for excessive shoots, we must eliminate some of the shoots, which is conducive to ventilation and light transmission and improve resistance.
Fertilization: Excessive rainfall often results in the loss of orchard fertility, resulting in weakened tree vigor and reduced resistance. Therefore, during the rainy season, fertilization should be applied timely according to the loss of soil fertility and grape growth in the vineyard. Fertilization should be based on the principle of “eat less and more mealsâ€. The fertilizer should be applied sparingly and industriously. The top dressings outside the roots should be combined with spraying, and it is best to spray the fruit foliar fertilizers separately.
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