Carvacrol is a botanical pesticide with good antibacterial and insecticidal effects, and its antifungal ability is particularly outstanding.
Carvacrol can be used to prevent and control tomato gray mold, tobacco powdery mildew, brown spot, potato late blight, tea leafhopper, citrus spider mite, cucumber bacterial angular spot, citrus tree lice, tobacco virus diseases, and rice planthoppers.
Chitosan oligosaccharides refer to oligosaccharides in which D-glucosamine is connected with β-1.4 glycosidic bonds. It is produced by degrading chitin into chitosan and then degrading it, or by microbial fermentation. Toxic fungicides. Agricultural grade chitosan oligosaccharides can inhibit the growth of some pathogenic bacteria, affect fungal spore germination, induce changes in hyphae morphology, and biochemical changes within spores. It can stimulate genes in plants to produce disease-resistant chitinase, glucanase, basin and PR proteins, etc.
Chitosan oligosaccharide also has cell activation effect, which helps the recovery of damaged plants, promotes roots and seedlings, and enhances the growth of crops. Stress resistance, promote plant growth and development. Chitosan oligosaccharide solution has anti-toxic, bactericidal and fungicidal effects. It not only has a strong prevention and eradication effect on fungi, bacteria, and viruses, but also has nutritional, regulatory, detoxification, and antibacterial effects.
Chitosan oligosaccharide can be widely used to prevent and control mosaic diseases, leaf diseases, spot diseases, anthracnose, downy mildew, blight, and vine blight caused by viruses, bacteria, and fungi in fruit trees, vegetables, underground rhizomes, tobacco, Chinese medicinal materials, and grain and cotton crops. , yellow dwarf, rice blast, bacterial wilt, soft rot and other diseases.
Chitosan-oligosaccharides are a kind of plant immune inducer, which induce plants to produce disease-resistant factors through their effects on plant cells. Chitosan-oligosaccharides have a certain yield-increasing effect on vegetables, also have a certain effect on various crop diseases such as Tomato late blight, pepper virus disease, peach perforation disease, watermelon wilt disease, etc. have good inhibitory or control effects.
Endogenous: Plant hormones are endogenous substances produced by the plant’s own metabolism, also called endogenous hormones.
Mobility: Plant hormones are mobile and can be transferred to other parts of the plant after production to exert their regulatory effects. The speed and manner in which different plant hormones move vary depending on their species and the characteristics of the plant organ.
Regulatory: Phytohormones have regulatory effects and control the growth and development of plants by regulating their own concentration. Phytohormones can regulate plants through positive and negative feedback mechanisms. For example, high concentrations of auxin inhibit the growth of lateral buds, while low concentrations of auxin promote the growth of terminal buds.
Significant effect: Although the content of plant hormones in plants is very low, usually measured in nanograms and micrograms, they can significantly increase their effectiveness.
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γ-PGA
Seaweed extract
Chitosan-oligosaccharide
Biodegradable chitin is the second-most abundant natural polysaccharide, widely existing in the exoskeletons of crabs, shrimps, insects, and the cell walls of fungi. Chitosan and chitooligosaccharide (COS, also named chitosan oligosaccharide) are the two most important deacetylated derivatives of chitin. Compared with chitin, chitosan and COS not only have more satisfactory physicochemical properties but also exhibit additional biological activities, which cause them to be widely applied in the fields of food, medicine, and agriculture.
Paecilomyces lilacinus– is one of the egg parasitic fungi associated with the eggs of root-knot and cyst nematodes which has shown bright scope for use as an effective biocontrol agent against nematodes and termed as “opportunistic fungus” becasuse it parasitizes some stages of nematodes wherever it gets an opportunity to come in contact. By adaptation, it is not nematode feeder (nematophagous). It infects, colonizes and consumes reproductive structures of root-knot and cyst nematodes at sedentary stages of its life cycle.
For more about Paecilomyces lilacinus from Lin Chemical International,
As fungicide:
The finished product of Rhamnolipids may be applied as a foliar spray, fog, drench, soil or growing media drench, preplant spray or mist on seeds, bulbs, cuttings, and transplants, in closed hydroponics systems, and through irrigation systems. To prevention and control of plant pathogenic fungi on root, bulb, tuber and cane crops.
As insecticide: A Microscopy analyses of aphids treated with dirhamnolipid revealed that dirhamnolipid caused insect death by affecting cuticle membranes of M. persicae. Rhamnolipid shows potential for use as a insecticide to control agricultural pests.
Soil modifier: Can deal with PAHs, (PH value 4.5-7) and remove heavy metal ions, (PH value 8-10). Sugessted dosage: 0.5-4%. Same time can regulate the PH value on alkaline soil to improve harden soil.
As chelate agent: With good chelate ability of metal ion chelating and even stronger than EDTA sometimes. Can be used as chaleting agent in foliar fertilizers to increase the usage of nutrition elements like Ca, Zn, Fe, and so on. According to reports Rhamnolipids either increased total plant uptake of Zn from the soil or increased Zn translocation by reducing the prevalence of insoluble Zn-phytate-like compounds in roots.
Biosurfactants are surface-active agents produced by biological systems, mainly microorganisms. They contain both hydrophilic and hydrophobic moieties that which remain distributed at the interfaces between liquid phases with different degrees of polarity (oil/water), causing a reduction in both surface and interfacial tension which is an important aspect of lubrication and solubilization.
The structure and characteristic of the biosurfactants varies from one organism to another. They are easily degraded by bacteria in water and soil, hence they are appropriate for use in bioremediation processes. Biosurfactants are classified into five major groups:
Kasugamycin is an antibiotic product. Its function is to interfere with the esterase system of growth-promoting cells, thereby affecting protein synthesis, inhibiting mycelium elongation and causing granulation, but has no effect on spore germination , pollution-free and other characteristics, is an environmentally friendly green bio-pesticides.
Kasugamycin was first used on rice blast, and its control effect can reach more than 80%. With the promotion and application, at present, Kasugamycin has been widely used in various crops such as rice, tobacco, potato, cucumber, watermelon, tomato, celery, sorghum, pepper, kidney bean, peach tree, peach tree, litchi, cabbage, etc. It can prevent fungal diseases such as celery early blight, rice blast, citrus gummosis, tomato leaf mold, caltrop flax spot, peach tree brown spot perforation, citrus gummosis, sand skin disease, etc., as well as tomato canker, bluegrass blight, cucumber bacterial angular spot, potato ring rot, pepper bacterial scab, Chinese cabbage soft rot and other bacterial diseases.
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