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Grape disease prevention begins in spring
1, before sprouting. In this period, the main control objects are various wintering pests. The method is: When the scales on the winter buds start to open, spray 1 to 3 times the concentration of 5 - 5 Baume degrees lime sulfur plus 80% 200-300 times mixture of sodium pentachlorophenol. When spraying, spray grape branches, pillars, iron wire and ground all over. 2, leaf period. In this period, the main targets of prevention and treatment are black pox and green-eyed ticks. First spray 80% spray grams 600-800 times liquid plus 10% quenched 4000 times. Half a month later spray 1:0.5:240 times Bordeaux mixture. 3, before flowering. This period is mainly to prevent blackpox, and it is necessary to control gray mold and cob browning. Spray 80% spray grams 600-800 times liquid, pay attention to avoid flowering spray, so as not to affect the fruit set. 4, after the flowering period. In this period, it mainly controls black-pox, anthracnose and cob ear blight, spraying 50% carbendazim 500 times or 1:0.7:200 times Bordeaux mixture. 5. Fruit enlargement period. This period mainly focuses on the prevention of downy mildew, anthrax and house blight. Can be sprayed with 78% Kebo 600 times fluid or 500 times fluid of carbendazim, if there are symptoms of downy mildew, spray Kebo is the best. 6, seal coloring period. This period is mainly to prevent white rot and prevent anthrax, downy mildew and house blight. Spray 600 times Kepo 600 times, or 1:0.7: 180 times Bordeaux mixture. It was found that there was a white rot disease symptoms, and sprayed with 50% thiram and 600 times liquid. During this period of spraying, add 1 time 10% quenched 4000 times. 7, color change mature period. This period to prevent white rot, anthrax, downy mildew, and prevent brown spot, room blight. Can spray 80% spray grams 600 times or 78% Kebo 600 times liquid, if there is anthrax symptoms, spray 1 times anthrax Fumei 500 times. Note: Stop using the drug 20 days before harvesting. 8, grapes after harvest to the fallen leaves. This period is dominated by the prevention of downy mildew, with 1:1:180 times Bordeaux mixture as the main drug. Can spray 1 spray g, not only prevent disease but also conducive to robust plants. It was found that downy mildew occurred, and sprayed 78% Koboga 80% BDP 500 times once. This period should not be allowed to leave because of no fruit on the tree. 9. If there is a deficiency in the grapes from the leaf to the leaves of the grapes, add the corresponding 0.30% to 0.50% of the missing elements to supplement the elements with the top dressing. 10, dormancy period. In this period, the grape is mainly controlled by various overwintering pests. The method is: to clear the orchard, clear all the dead branches, fallen leaves and weeds out of the park, burn or deep-buried, and this work is carried out twice. It is best to combine the soil with deep turning or rotary tilling.