博文

目前显示的是 十二月, 2018的博文

Try Chitosan oligosaccaride to reduce use of traditional pesticide

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The Mechanism of action of Chitosan oligosaccharide MECHANISM The mechanism is that plant can produce chitinase by absorbing Chitosan oligosaccharide to interact with pathogenic bacteria, inhibit the growth of pathogenic bacteria, make susceptible plants produce systemic resistance, promote plant synthesis of phytoprotegerin, stimulate the synthesis and accumulation of plant lignin, and at the same time promote the activity of plant disease-resistant enzymes.With the systemic resistance of plants, the vascular bundles of stem base had no lesion or lessened obviously, the root system was developed, the plant was strong, the fresh weight of individual plant was increased, and the disease resistance was improved. ECO-FRIENDLY,WITHOUT ANY RESIDUESChitosan oligosaccharide are different from traditional pesticidesIt does not directly affect harmful organisms, but stimulates the immune responses of plants themselves(including sterss resistance)to play an important role in resisting stress,re…

Dissolution test of Dora chitosan oligosaccharide

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The most troubling grapevine diseases

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There are more than 30 known grape diseases. Among them, sour rot, anthrax and powdery mildew are the most common diseases. If we know more about grape diseases, we can improve grape growing environment, promote grape yield and improve economic benefits.















Grape Sour Rot Sour rot is usually caused by the mixture of acetic acid bacteria, yeasts, fungi, Drosophila larvae and other microorganisms. It is a serious disease that can reduce grape yield by 30%-80%.Symptom There are rotten grapes, if it is bagged grapes, under the bags there is a dark moist, while there are vinegar flies around the rotten ears, emitting acetic acid taste. White maggots can be seen in the rotten fruit. As the rotten juice flows out, the place where the juice flows will rot. Site of occurrence:Fruit Occurrence stage:After grape sealing→When grapes are colored Best prevention time:Staining to Maturity Grape Powdery Mildew It is a common disease of many plant species and belongs to the fungal disease of the genus Leptospi…

What’s symptoms of Grape leaf roll disease ?

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Grape leafroll Diseases Grape leafroll disease is a common virus disease in grape production, which is widely spread. Grape leaf roll disease has semi-latent characteristics. It does not show symptoms in most growing seasons. Most Eurasian plants show symptoms only at fruit ripening stage. Leaf symptoms were most obvious from harvest to deciduous stage. Leaf margins were rolled back, veins became yellow or red, only the main veins remained green, while some varieties gradually withered and browned. The disease is harmful and can reduce grape yield by 20%-50%.








Disease manifestation The symptoms of grape leaf roll disease vary with environmental conditions and time. The symptoms of grape leaf roll disease vary according to environmental conditions and at different times of the year.


Transmission pathway Grape leaf roll virus is mainly transmitted through seedlings, scions and cuttings. Cause of disease Grape leaf roll disease is mainly transmitted by artificial cultivation activities. …