Poplar canker disease is a common occurrence of poplar, and if it is not controlled in time, the damage is more and more serious. Some nursery places are almost every disease, and the condition is very severe. The pathogenic bacteria of the canker is a kind of bacteria. It is wintering in the bark, and it is spread by rain, insects, etc. The perforation and perforation of wounds invade and rot and spread until the ulcer. First, the onset of symptoms, blisters appear near the trunk skin pores, hand pressure that is a liquid outflow, blister rupture after the outflow of odor liquid, there are a large number of bacteria. In the end, the diseased section collapsed into ulcer spots and the lesions turned brown and rot. When the disease is serious, dense blisters can cause all bark to rot, affecting sparsely causing the whole plant to die. Second, prevention and control 1. Strong fertilizer water management, spraying "high-fat membrane + tree generals" sterilization, enhance tree vigor, to avoid trauma. 2. Transplant large seedlings, apply "wound anti-corrosion film" to the wound, close the virus replication and transmission route, and prevent infection. 3. The field management must be strengthened to increase the poplar spirit.
Ivermectin is a new broad-spectrum, high-efficiency and low toxicity ANTIBIOTIC antiparasitic drug. It has good repellent effect on internal and external parasites, especially nematodes and arthropods. But it has no effect on tapeworm, trematode and protozoa. The repellent effect of macrolide Antiparasitic Drugs on nematodes and arthropods lies in increasing the inhibitory transmitter of the insect body γ- The release of aminobutyric acid (GABA) and the opening of Cl ion channel controlled by glutamate enhance the permeability of nerve membrane to Cl, so as to block the transmission of nerve signals, and finally nerve paralysis, so that muscle cells lose their contractile ability, resulting in insect death.
Name: ivermectin Injection 10% Ivermectin,Pharmaceutical Ivermectin Injection,100ml Ivermectin Injection,30% Injectable Ivermectin Shandong Unovet Pharmaceutical Co.,Ltd. , https://www.unovetcn.com
Alias: ivermecti; mk933; 22,23-dihydroavermectin B1; Uvemec; Ivosint; Ivermectin; EQVALEN; IVOMEC;
CARDOMECmk-0933; Mectizan; Vermic;
CAS No.: 70288-86-7
Molecular formula: c48h74o14
Molecular weight: 875.09300
Exact mass: 874.50800
PSA:170.06000
LogP:5.60140
Structural type:
Ivermectin
It is a derivative of avermectin. William C. Campbell, the discoverer of avermectin, and Yoshimura won the 2015 Nobel Prize in physiology and medicine for their outstanding achievements in fighting river blindness and elephantiasis.
Ivermectin is a semi synthetic macrolide multicomponent antibiotic produced by Streptomyces avermitilis fermentation. It mainly contains ivermectin B1 (BLA + B1B) not less than 93%, of which BLA shall not be less than 85%.
Ivermectin B1 is 22,23-dihydroavermectin B1.
Physicochemical properties
Properties: This product is white crystalline powder; Tasteless. This product is easily soluble in methanol, ethanol, acetone and ethyl acetate, almost insoluble in water, and has slight hygroscopicity. Ivermectin is a 16 membered macrolide antibiotic. Its basic structure is the macroester ring at the carbon 16 position and three main substituents, namely hexahydrophenylfurans at the C2 to C8 positions, disaccharide at the C13 position and ketone at the C17 to C18 positions.
Storage conditions: 2-8 º C