Any agent that kills or inhibits the growth of a pathogen, but does not hinder the normal growth of the plant, is collectively referred to as a bactericide . How to use fungicides efficiently in production is of great significance for increasing crop yield. Let's talk about the key technologies for the efficient use of fungicides for reference. Properly formulated concentrations When sprayed with fungicides (including liquids and wettable powders), the agents need to be formulated or diluted to the appropriate concentration with water. Different fungicides have their own special requirements for the concentration of the fungicide. When configuring the concentration, it must be strictly in accordance with the "Instructions for Use" and should not be increased or reduced at will. If the concentration is too high it can easily lead to injury, the concentration is too low to achieve the effect of drug use prevention and treatment of disease. Selecting the spraying time Generally speaking, spraying the sterilizing agent too late or too early will affect the control effect. Therefore, the use of fungicides should be based on the occurrence of different diseases of the crops and the predictions and the specific conditions of the disease. Usually, the time of administration of the fungicide should be in the pre-onset (protective use) or early onset (preventive). Mastering the frequency of spraying The frequency of spraying of the fungicide is mainly determined according to the length of the residual period of the drug and the meteorological conditions. Usually spray once every 10-15 days, a total of 2-3 times. In case of special circumstances, such as rain after application, it should be replenished in time. Improve the quality of the drug spray The quality of the spray includes the amount of the drug and the quality of the spray. The amount of medicine should be appropriate, and the excessive use of the medicine will increase the cost, and on the other hand, it may cause phytotoxicity. However, too little medication can not achieve the purpose of medication. The quality of the medication should be exquisite. When spraying, it is required to be finely fogged and sprayed evenly. It should be sprayed on the stems of the plants and the front and back of the leaves, so as to avoid leaking. Cautious drug mixed bactericides are mostly alkaline pesticides , so they can not be mixed with insecticides that are easily decomposed and decomposed by alkaline substances. For example, Bordeaux mixture, stone sulphur mixture, etc. are alkaline and cannot be mixed with 1605, dimethoate, dichlorvos, etc. Otherwise, it will cause "two losses." Some fungicides such as carbendazim, Beauveria bassiana, etc. can not be mixed with Bordeaux mixture, lime sulfur, thiophanate fungicides, pesticides also cause (bacteria) loss of physiological activity and insecticidal microorganisms (bacteria) capability Invalid. In addition, some of the chemical reactions that occur after mixing and cause phytotoxicity can not be "disordered". Of course, not all fungicides can be mixed with other pesticides. A small number of fungicides can also play a synergistic role when mixed with pesticides. For example, dimethoate mixed with acidic bactericidal properties such as zinc or wet sulphur or colloidal sulphur will not only affect the efficacy of the drug, but also improve the efficacy. Attention to avoiding drug resistance Long-term use of a single agent (mainly systemic fungicides) can lead to resistance to pathogens, even if repeated use of drugs will not help, or even worse. In order to avoid disease resistance, it is necessary to scientifically select pesticides, and to do the alternate (rotation) use of different types of pesticides. It is strictly forbidden to use one pesticide for a long time. Chesterton 155 Mechanical Seal,Chesterton 155 Seal,Chesterton 255 Cartridge Dual Seal,Chesterton 442 Mechanical Seal,Chesterton Pump Seals Shanghai Enactus Industrial Co., Ltd. , https://www.enactuseal.com
How to use fungicides efficiently