Prevention and Control of Major Diseases and Pests of Grape in Summer and Autumn

Summer and autumn seasons are the fruit's fruit enlargement and maturity. Due to the increase of temperature and increase of rainfall, the pests and diseases of grapes also increase, often causing great economic losses. In severe years, the orchard is more than 60%. According to the management situation in recent years, we summarized the following prevention measures for reference.
Grape white rot. Grape white rot, also known as water rotten or scratch disease, mainly damage fruit, ear, cob, branches and leaves and so on. The disease began in the Luxi region in the late fruiting period of the fruit enlargement and coloration in the middle and late June, and it was in early July. With the increase of rainfall, the incidence increased. Chemical control: spray once every 7-10 days, spray 3 to 5 times. Within 12 hours after the drug encounters rain, it should be sprayed. The preferred agents are: 80% Triconazole ultra-wettable powder (produced by Henan Xiaqi fruit tree) 2000 times, 75% chlorothalonil wettable powder 500--600 times, 50% thiophanate-methyl Wet powder 600--800 times, 1:0.7: 200 times Bordeaux mixture and so on.
Grape ear blight. The main damage fruit, fruit stems, cobs and leaves. The disease has more incidence after fruit coloring. Chemical control: spray 15% 75% chlorothalonil wettable powder 500--600 times before flowering, drop 7 days spray 68% bacteria rust enemy wettable powder 3000 times (Henan Xia Yin fruit tree production) +1:0.7 : 200 times the Bordeaux mixture, 10-15 days, a total of 3 - 5 times, or with 50% tune 500 - 800 times, 78% Cobo WP 600 - 800 times liquid. When spraying, fruit and ear should be evenly drugged.
Grape anthracnose. It is one of the major diseases that damage the fruit during the ripening period of grapes. Chemicals control 68% rust rust enemy WP 1000--1200 times, 78% Cobo WP 600--800 times, 80% anthraquinone WP WP 600 times, spray 2 - 3 times . If used with rust 3000 times liquid and 1:0.7:200 times the amount of Bordeaux mixture mixed with bactericidal, protective double effect, better control effect.
Grape downy mildew. In the Luxi region, the disease usually begins in late June and early July, and it is the peak period from August to October. Combine with other diseases to control the first injection from the initial stage of the disease, once every 10-15 days, even spray 3--5 times. It can control the disease. Control agent: 80% Trimethoprim WP 2000--2500 times (Henan Xia Li fruit tree production), 58% of Dactylium 600--800 times, 40% of BDP 400--500 times or 1: 0.7: 200 times Bordeaux mixture.
Grape leafhopper. In the Luxi region, there were 3 generations in 1 year, and in mid-May, the nymphs were hatched and mostly yellow-white. In the first and second half of June, the first generation of adults emerged. The second generation of adults had the highest number of occurrences in July and the beginning of August, and the third generation of adults had the highest number of occurrences from September to October. Adults and nymphs gather on the back of a grape leaf to suck juice. The victim's leaves turned green and yellow, and when severe, the leaves were pale or scorch. Seriously affect the yield, quality, affect the maturity of buds and flower bud differentiation. Chemical control: The first generation of nymphs is the key to chemical control, can be combined with other pest control, spray 40% omethoate 1500--2000 times, 50% dichlorvos 800--1000 times, 90% trichlorfon 1200 times solution can receive good pest control effect.

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