Mythimna separata has the characteristics of rapid propagation, short-term outbreak, increased food intake after 3rd instar, and enhanced drug resistance. The control period should be controlled before the third instar larvae. After the seedlings of maize were sown, the second-generation of the armyworm was controlled before the emergence of seedlings. The prevention and control methods could be combined with the soil to close the weeds and sprayed together with insecticides to achieve the double effects of weed control and insect control. In the early stage of larvae, spraying and controlling were performed, and the larvae were eliminated before the third instar. For young instar larvae, insect growth regulators can be used to prevent and control pesticide pollution and protect natural enemies. Per acre can choose 5% flufenoxil (calcium) EC 50 ~ 75 ml, or 25% diflubenzuron suspension 30 ~ 40 ml, or 20% diflubenzuron suspension 5 ~ 10 ml water 50 kg uniform Spray control. When the density of insect population reaches the control index, chemical control should be carried out immediately. Per acre can choose 50% phoxim EC, 77.5% dichlorvos EC, 40% chlorpyrifos (Loss Ben) EC 75-100 ml, or 4.5% Beta-cypermethrin EC 50 ml + 77.5% Dichlorvos EC 50 ml 50 kg water spray. When spraying, it should be before 9:00 a.m. in the morning or after 5:00 in the afternoon. If there is a rainy day, it should be sprayed in a timely manner. The spray should be uniform and thoughtful. The weeds in the fields and roadsides must be sprayed.
he fluorine-containing phenol series product is toxic and irritating, it should be avoided absorbed into the body through the skin. And not allow to store with strong oxidant, alkali, hydrochloric acid and acid anhydride , Store with flammable liquid or solid,must be away from heat and open flames,it should be stored in a cool dry place. Most of the fluorine-containing phenol products are stable at room temperature and pressure, but avoid contact with the oxide. In the air it is easily oxidized color.
Manufacture and storage of fluorine-containing phenol series should be carried out in a well ventilated place. Wear appropriate protective equipment and prevent dust from spreading. Wash hands and face thoroughly after handling.
Most of the fluorine-containing phenol series of products can be sublimated. It can cause severe skin burns and eye damage.
So save the fluorine-containing phenol series in sealed containers must be stored in a cool, dark place. It must be stored locked. In the event of a fire extinguishing agent is suitable dry powder, alcohol-resistant foam, water spray, carbon dioxide.
Containing Phenol,2-Bromo-4-Methylphenol,2-Chloro-3-Fluorophenol
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