Natural Plant Extract is a kind of solid powder obtained by cleaning, extracting, concentrating and spray drying Chinese herbal fruits and vegetables, without adding any other ingredients; The effective components and essence of plants are extracted, which improves the full utilization rate of plants and is beneficial to human absorption.
The components of plant extracts can be divided into glycosides, acids, polyphenols, polysaccharides, terpenoids, flavonoids, alkaloids and so on. For example, the main component of green tea extract is tea polyphenols. Ginseng extract mainly contains a variety of ginseng monomer saponins; According to different characters, it can be divided into extract, powder, lens, etc., such as violet leaf extract, hang white chrysanthemum extract. Natural Plant Extract,Paeony Extract,Licorice Root Extract,Dong Quai Root Extract Fufeng Sinuote Biotechnology Co.,Ltd. , https://www.sinuotebio.com
Citrus canker disease prevention and control technology
Citrus canker disease Xanthomonas citri (Hasse) Dowson is a bacterial disease that is severely afflicted by citrus and has been established as a quarantine subject at home and abroad. After the plants are damaged, the tree vigor is weak, and the leaves and fruits are easy to fall off; as a result, the yield is reduced and the quality of the fruit is affected. After the seedlings and saplings were severely damaged, the leaves fell and the branches died. This impeded the development of citrus production. [Pathogens and Symptoms] The pathogen of the disease is a species of Bacillus subtilis, which is mainly responsible for citrus and genus of Rutaceae and can also infect kumquat. The bacteria can infect citrus leaves, branches and fruits. In the early stage of the victim's damage, large yellowish oily stains appeared on the needles. After the enlargement, a round spot appeared. The leaves rose to the opposite sides of the leaf. The wood was corked and rough. The center was cracked and cratered. There were yellow halos around the lesions; The victim was similar to the leaves, and there was no yellow halo on the lesions on the shoots. The lesions were often irregular. The lesions had yellow halos on the leaves and the halo disappeared after the fruits matured. [Infective conditions] The pathogenic bacteria reside on diseased branches, diseased leaves, and diseased fruits. In the spring rainy season of the following year, with the help of wind and rain, the branches and leaves communicate with each other and invade from the wound, stomata, or lenticels. Disease seedlings can be transported over long distances. High temperature and rainy conditions are conducive to the epidemic. Partial application of nitrogenous fertilizers, excessive shoots, and improperly trimmed orchards are also prone to disease. From May to September every year is the peak period of onset, and the summer shoots are generally heavier. In addition, there are also differences in disease resistance among different varieties, oranges are more susceptible to disease, grapefruit is the second, and broad-leaved citrus is the lightest. [Prevention and control methods] 1 Strict quarantine, no transfer of seedlings, seeds, etc. from the ward. 2 Seeds of bacteria are sterilized by soaking in hot water at 55-56°C for 50 minutes. 3 winter clear garden, cut off the disease and concentrated burning of leaves and spray 8-1 Baume stone flow mixture. 4 The saplings were sprayed once in the spring, summer, and autumn shoots and green leaves. The results should also be sprayed 10 times, 30 days, and 50 days after the flowering. The agent can be used for 30% oxychlorination. Copper 700-fold dilution, 72% agricultural streptomycin 4000-fold dilution or 50% DT wettable powder 500-fold dilution.