Common pesticide application methods
Pesticides are an advantageous weapon against diseases, pests, and rats. According to different situations, the application methods of pesticides are also varied. Now I would like to ask Duan Peikui, deputy director of the Shandong Provincial Institute of Pesticides, to give you information on pesticide application methods.
Duan Peikui introduced that the pesticide application method refers to the technical measures adopted to apply the pesticide to the target. According to the types and regularities of diseases, insects, and weeds, proper application of pesticides can not only improve the control effect, save the amount of pesticides, increase the use efficiency and reduce the labor intensity, but also reduce the pollution to the environment and avoid the destruction of natural enemies. Strengthens the security of people, animals and crops. It is understood that, depending on the occurrence of diseases, pests, grasses, and rats, common pesticide application methods mainly include the following.
First, the seed treatment method. There are four methods for seed treatment: seed dressing, dipping (jinzi), soaking and boring.
1. Seed dressing: It is to mix the powder or liquid and the seed evenly to prevent pests and diseases. It is mainly used to prevent species-borne diseases and underground pests. This method has less medication, high work efficiency, good control effect, and little effect on natural enemies.
2, impregnation: is to spread the seeds on the ground, the thickness of about 15 cm, and then spray the liquid on the seeds, and constantly turning to make all the seeds wet, covered with mats and other coverings, sow stuffy day after sowing.
3. Soaking: Soak the seeds or seedlings in a certain concentration of the liquid and allow the seeds or seedlings to absorb the medicine after a certain period of time. This method can control pathogens or seedling pests inside and outside seeds and on seedlings, and has the advantages of less labor, good preservation effect, less dosage, and little effect on natural enemies.
4, boring species: the liquid is mixed with the seeds after a certain amount of time and then sowed.
Second, dusting method. It is the use of the dust generated by the duster to evenly sprinkle the powdered pesticide on the surface of the crop or control object, so as to achieve the purpose of preventing and killing insects. The powder spray method has the advantages of no water, high work efficiency, simple method, timely prevention and control, and even distribution. The disadvantage is that it is greatly influenced by the wind, has poor adhesion to crops and insects, has a large dose, and can easily cause environmental pollution.
Third, the spray method. It is to use a certain amount of pesticides and appropriate amount of water to form a liquid medicine. The liquid spray is used to spray the liquid into droplets and evenly distributed on the surface of crops or control objects. This is the most commonly used method of application. This method is suitable for pesticide formulations such as emulsifiable concentrates, aqueous solutions, wettable powders, suspensions, oils, and soluble powders. It can be used for stem and leaf treatment, and also for soil treatment. The spray method has the advantages that the liquid medicine can be directly contacted and controlled, the distribution is uniform, the effect is quick, the control effect is good, and the method is simple and convenient. However, there are also disadvantages such as easy drift and loss, poor safety for the application personnel and the like.
Fourth, fumigation method. Is the use of fumigants or volatile agents, make it volatile to toxic gases and insecticidal sterilization. This method is suitable for warehouses, greenhouses, soils and other places or places where crops are dense. Fumigation method has the advantages of high control effect, quick action, etc., but requires fumigation indoors, sealing, strict application conditions, spraying personnel must do a good job protection.
Fifth, bait law. It is the use of pests, rodents eaten bait and a poisonous bait with a mixture of stomach poisoning bait, to achieve the purpose of trapping. It is mainly used for the control of underground pests and rodent pests. The effect of control is high, but the safety of humans and animals is poor.
Sixth, soil treatment method. Spraying, dusting, and spreading toxic soils are used to evenly apply pesticides to the ground or in certain soil layers to prevent diseases, insects, and weeds. This is called soil treatment. Many herbicides are applied by this method. This method can extend the efficacy without harming natural enemies.
Seven, smoke law. Use special tools to disperse oily pesticides into aerosols to achieve insecticidal sterilization. Because the particles of smoke are small, the suspension time is longer in the air and the sediment is distributed evenly. This method is often applied to the control of pests and diseases in greenhouse crops.
According to the relevant personnel of the Shandong Provincial Institute of Pesticide Testing, pesticide application methods are varied. However, when farmers use pesticides, they must pay attention to different types of pesticides and different types of pesticides. Appropriate methods of application should be selected according to local conditions to achieve better control. .
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