Summer Management of Grape

Some vineyards have many diseases in summer, mainly: Grape downy mildew, white rot, anthracnose and so on, downy mildew can cause grape leaves, dead branches, rotten fruit and even death. Therefore, Liu Zhongtang, agronomist and forest fruit expert of Wei County Agriculture and Animal Husbandry Bureau, reminded fruit growers to strengthen the management of vineyard in rainy summer season and prevent diseases in time during technical training in the township. 1. Garden cleaning: If there is a disease in the vineyard and there is much rain at this time, clear the garden at any time, remove the diseased leaves, diseased branches and diseased fruits from the garden, bury them deeply or burn them. At the same time, timely removal of weeds in the garden, in the removal of diseased branches, diseased fruit, to often clean scissors, and disinfection, to prevent cross infection. 2, loose soil: summer, autumn rainy season, especially heavy rain, heavy rain, rain will make the vineyard soil surface hardening, poor soil ventilation, resulting in grape root hypoxia, tree weakened, stress resistance reduced, thus easy to disease. Therefore, it is necessary to cultivate the soil deeper in time before rain or rain stop interval to improve the permeability of the garden soil. 3, treatment: continuous rain or high temperature and humidity, grapes are most susceptible to disease, should be observed once a day in the vineyard, see the initial onset of disease, immediately symptomatic spray. Such as downy mildew, if you see disease elsewhere in the garden, even if it is found on a grape plant, spray immediately. 4, clear shoots: to pick the grape in time, timely wipe off the secondary shoots. At the same time, too many new shoots of the plant, to thin out a part, so conducive to ventilation and light transmission, improve stress resistance. 5, fertilization: too much rain, often cause orchard fertility loss, resulting in weakening of tree potential, reduce their own resistance. Therefore, in rainy season, according to the loss of soil fertility in vineyards and grape growth, timely fertilization. Fertilization should be based on the principle of "eat less and eat more", and fertilizer should be applied less and frequently; topdressing outside roots is generally combined with spraying, and it is best to spray high-efficiency fruit foliar fertilizer alone.