The main characteristic of the disease is that the victim's fruit and tissue are brownish and gradually soften and rot. The fruit stems and fruit surfaces often grow a rather thick mold layer, which is the conidial stem and conidia of the pathogen. The fungus layer appears white when it starts to appear, and it is thin. When it is formed in large quantities, the mold layer becomes a greenish green color and is thicker. Many yellow-white pitted small spots appear on the grapes, and the boundary with healthy tissues is clear. Usually occurs at the pedicles. In severe cases, most of the fruit on the whole-spike grapes are partially discolored, and even the whole fruit is yellowish-white, resulting in the final loss of fruit. Water shrinks.
Rotten fruit often has a damp, rancid smell. The grape begins to mature, and when it is harvested, only one layer of dry shell is often left over from the rotting fruit. By gently touching the whole rotted ear, the dusty spore powder is released. Occasionally, the disease may also appear as brown, light yellow or green mildew, which is caused by other species of germs.
In the prevention and control must strengthen orchard standardized management, strict control of the load and the thickness of the leaf curtain layer, to promote the technique of fruit spalling, moderate tightness of the ear, and timely removal of diseased ears, debris and other debris. Onset of serious orchards can be used 42% powder will be clear 250 times suspension agent, 10% difenoconazole water dispersible granules 6000 times, 50% Mobile 1500 times double wettable powder.
Grape black mold and grape gray mold prevention and control methods are similar, specifically the following points:
Science Park
When building a park, try to choose a high-pitched, well-ventilated plot. Relax the line spacing appropriately, adjust it to be parallel to the main wind direction, and do not lower the scaffolding to ensure ventilation and light transmission, which can effectively prevent or reduce the occurrence of gray mold.
Clear bacteria source
In the fall and winter season, weeds, leaves, fallen leaves, and diseased fruits that have been cut off from the fields, sick branches and leaves, are burned or buried deeply, and the source of pathogens is reduced. In the growing season, the diseased inflorescences and ears must be completely cut off to prevent re-infection.
Fertilizer management
When the orchard is short of water, it will be filled with water, and it will be drained in case of rain. Appropriately control the amount of nitrogen fertilizer, increase the application of phosphorus and potassium fertilizers, various trace elements and organic fertilizers, so that the tree grows robustly and enhance the plant's own resistance to disease.
Chemical control
Generally control in the inflorescence separation period, before flowering, before bagging and near fruit ripening standard drug control. Protection agent is used when there is no illness, such as Cobo, essential and Bordeaux mixture. Once symptoms are found, immediately apply a therapeutic agent, such as 50% Syringe 1000 times, 40% pyrimethanil 1000X and other agents.
Manual Video Measuring Instrument
Manual image measuring instrument is a precision measurement instrument that uses manual driving for 3 axes, and the measurement software is manual point taking.
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The manual image measuring instrument consists of three parts: an image acquisition device, a data acquisition device, and a two-dimensional measurement software. The zoom objective lens and high-resolution color camera form an image acquisition device, and the data acquisition device is composed of a grating ruler and a data processor. The image and data are measured using 2D measurement software to achieve point, line, arc, and distance measurements.
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