The year is spring, and as the temperature rises, the pests and diseases that have passed the winter are beginning to become active again. If we can fully understand the time and regularity of the various pests and diseases of the grape in a year, prevent it in advance, and combine prevention and treatment, it will greatly reduce the probability of outbreaks of pests and diseases in the orchard, which not only saves pesticide expenses, but also can improve the production of grapes. Raise the foundation.
From dormancy to pre-emergence: Qingyuan
Scrape the vine on the old skin, concentrate on destroying the spraying of 3-5 degrees stone sulphur mixture to prevent and control various winter pests and diseases. Note: the ground, branches and shelves should be sprayed.
Budding to leaf stage
Overwintering pathogens such as black pox, white rot, anthracnose
Pests such as thrips and green blinds
Measures: 80% mancozeb WP 600-800 times + carbendazim + imidacloprid / ya (mat) spray
Flowering spikes - before flowering
Focus on the prevention and treatment of black pox disease, cob brown blight and other diseases
Pests such as thrips and green blinds
80% mancozeb WP or Bensen zinc 600-800 times + azoxystrobin + 70% imidacloprid water dispersible granules
After falling flowers
Black pox, downy mildew, white rot and other diseases
Pests such as thrips and green blinds
Pyraclostrobin/benzazole/propenium zinc + yak (1.5% matrine solution) 500 times + fipronil / acetamiprid + Shuofeng 481 2500 times around 5 in the evening Spray control to find the lesions sprayed with difenoconazole / tebuconazole to prevent cracking fruit spray can add strong cover (Ca ≥ 150g / L)
Young fruit expansion period
White rot, brown spot, downy mildew, etc.
In this period, if there is less rain, you can use a nail or Bordeaux spray to prevent the rain. If you have more rain in this period, you can choose azoxystrobin and Daisenlian protection. You should pay attention to the following medicines before bagging 15 days or so. The medicinal agents all have a destructive effect on the formation of grape fruit powder; the powder-based agents are much less fine than the other dosage forms, and it is easy to form plaque-contaminated fruit on the fruit surface; most of the triazole bactericides have side effects of inhibiting fruit enlargement. For example, propiconazole, flusilazole, tebuconazole, myclobutanil, hexaconazole, etc., of course, imported difenoconazole and tebuconazole are relatively safe. Recommended: Atropine / Cinson zinc + boscalylamine · Pythium / Shigao spray or soaked ears, the ear can be bagged after drying
Sealing to coloring
White rot, brown spot, downy mildew, etc.
Brown spot disease, white rot disease, when tebuconazole, difenoconazole is used to treat the initial lesion of downy mildew, 80% dimethomorph water dispersible granules or enoyl whey Other effective agents for treatment
Coloring sugar to maturity
White rot and anthrax tend to occur more seriously
In this period, the fruit is close to maturity, and the fungicide should be selected without contamination on the fruit surface, avoiding the use of wettable fungicides (25% prochloraz oil) or tebuconazole + unparalleled in the world (80% dimethomorph water dispersion) Granules) control white rot and anthrax. When downy mildew occurs, use fluorobacteria and chlorfenapyr.
After picking fruit to before falling leaves
The focus of this period is to protect the leaves. The main diseases are the downy mildew and brown spot disease. The 80% mancozeb WP (Bangjiawei) and Bordeaux mixture are the main agents.
After falling leaves
Timelyly remove the fallen leaves, diseased branches and dead fruits out of the garden, and concentrate on the whole plant, frame and ground spray after 3-5 degree stone sulphur mixture
Finally, the principle of prevention and control of grape pests and diseases is added:
The right medicine: Determine the pesticides to be used according to the type of disease occurrence: Determine the spraying time according to the law of disease occurrence. Focus: Determine the key period of key parts of spraying according to the characteristics of disease: (pre-flowering, post-flowering, coloring) Reasonable compounding: the combination of protective agent and therapeutic agent: the drug that is easy to produce drug resistance should not be used together.
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