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The Prevention of Red Grape Disease in Rainy Season

The high temperature and high humidity in the summer are the high incidence of diseases such as grape downy mildew, white rot, anthrax and other diseases, which are particularly conducive to the occurrence of downy mildew, resulting in 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.

Timely treatment of continuous rain or high temperature and humidity, the grapes are most susceptible to disease, should be fully observed in the vineyard a day, see the initial disease, immediately symptomatic spraying. If downy mildew is found, if you see individual parts of the garden, even if it is found on a grape, you should spray it immediately.

Timely fertilization, strong growth of resistant trees and excessive rain, often results in loss of orchard fertility, resulting in weakened tree vigor and reduced self-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 meals”. 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.

Timely soil loosening enhances soil permeability. In summer and autumn rainy seasons, especially after heavy rain and heavy rain, rainwater will make the vineyard land surface compact and the soil will be poorly ventilated, resulting in a lack of oxygen in the grape root system, weakening of the tree vigor, and a reduction in stress resistance. Easy to disease. Therefore, in order to increase the permeability of garden soil, the soil should be ploughed once in a deeper time before the rain or during the rain.

Timely cleaning of the secondary tip, ventilation and light to the grapes in time to pick the heart, timely wipe the auxiliary tip. 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.

Clearing the garden in a timely manner to curb the spread of the disease 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 remove the diseased diseased leaves, diseased branches and diseased fruits from the garden, and bury or burn it. 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.

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