How to prevent pests from developing drug resistance
Silicon Carbide,Refractory and Abrasive,80%- 99.5% Silicon Carbide Food Sweeteners Chemical Reagent Co., Ltd. , http://www.nsauxiliaryagent.com
November 07 21:01:13, 2018
In recent years, due to the extensive use of chemical pesticides, coupled with the lack of basic knowledge of pesticides used by many flower farmers, improper use of drugs, resulting in more and more species of flower and tree pests resistant to drugs, and the degree of resistance is getting higher and higher. The following methods can be used to prevent pests from developing drug resistance: 1. Rotating drugs: Do not use certain pesticides to prevent and control certain pests for a long period of time. This can cut off the process of pest-resistant population formation. Rotating varieties should use pesticides with different mechanisms of action as much as possible. Such as organophosphorus pesticides, pyrethroid pesticides, carbamate pesticides, biological pesticides, etc., the principle of insecticide is different, can be used interchangeably. The use of the same type of pesticides in rotation should be prudent, because pests can easily obtain cross-resistance, that is, after a certain resistance to a certain kind of pesticide, it will also produce resistance to other varieties of the same kind of pesticide. Such as the anti-dimethoate Jerusalem artichoke, but also against dichlorvos, trichlorfon, etc. will also be resistant. Second, the mixed medication: the use of two kinds of pesticides with different modes of action and mechanisms can reduce the rate of occurrence of pest resistance. Even if drug resistance has been established, mixed drugs can also inhibit the drug resistance. At present, the most successful options for mixed use are: trichlorfon, dichlorvos and malathion, mixed use of pyrethroid insecticides and organophosphorus pesticides, trichlorfon and phoxim, methyl parathion Mixed use, oil emulsion and organic phosphorus insecticide mixed use. It must be noted that compounded pesticides cannot be used for a long period of time and they must be used alternately. Otherwise, there is a danger of causing drug resistance, and even causing more resistance to pests. Third, the intermittent use of pesticides or decommissioned: When a pesticide has caused the resistance of certain pests, such as the use of the pesticide in a period of time stopped, the insect resistance will gradually diminish or even disappear. For example, parathion-induced resistance to spider mites, after several years of decommissioning, the drug resistance of spider mites can basically disappear. In this way, the effect of the medicament can still be restored. Fourth, adding synergist: Adding synergist in pesticides, can obviously play a role in activating pesticides, improving efficacy, delaying and inhibiting insect pests from producing resistance. If a small amount of diesel oil is added to the omethoate to control the scale insects and soluble oyster shells, the pesticides will enter the insects and overcome the resistance of the insects to omethoate. In addition to oil substances, commonly used synergists are neutral detergent, soy milk, vegetable oil and so on. Fifth, a variety of drug methods: the use of pesticides in addition to conventional spray, you can also use other methods, such as mixed soil, poison baits, soil application, applicator, drops, injections, etc., alternating with different methods of drug use Helps prevent and overcome pest resistance. Sixth, the development of the use of soil pesticides: a wide range of raw materials for agricultural pesticides, production is simple, will not induce resistance to insect pests. At present, the soil pesticides to be developed are mainly plant-based pesticides such as tobacco, yanghuahua, ramie, and garlic. In addition, detergents, oils, quicklime, Caustic Soda, rosin, etc., are also good raw materials for making pesticides.