What factors will affect the efficacy of pesticide use? The use of pesticides is the most commonly used method for pest control. In the process of pesticide use, farmers often report poor efficacy. Some good medicines with complete three-package, new ingredients, sufficient content, and new dosage forms are deducted by farmers. There are a lot of pesticides in the hats of fake medicines. It is found that the factors affecting the efficacy of pesticides involve many aspects. 1. Pesticide's own factors affect the efficacy of the drug The composition, physicochemical properties and dosage forms of pesticides all affect the efficacy of the drug. There are differences between the different dosage forms of the same ingredients. At the same time, it is impossible to exclude some companies from making a fuss about the content, and stealing the content affects the efficacy. 2, the diagnosis of the disease is not accurate, there is a deviation in medication At present, the diagnosis of diseases relies mostly on the experience of dealers and farmers. Because of the amount of experience, things that confuse fungal diseases and bacterial diseases sometimes occur. When fungi and bacterial diseases are mixed, many farmers are blindly identified as fungal or bacterial diseases, and a single agent is used for prevention and treatment. Such treatment is extremely easy to miss the best prevention and treatment period of the disease, causing some medicines to fail to meet the needs of farmers. The effect of multi-effect drugs to the disease will produce the impression that the drug is not effective. 3, spray quality affects efficacy The quality of the spray directly affects the level of efficacy. At present, conventional spray machines are used in some places, and the sprayed droplets are too large. When the mist falls on the surface of the crop, it bounces. About 50% of the liquid falls on the ground, and the effect cannot be fully exerted. If the diameter of the droplets is reduced by half in the same amount of liquid, the number of droplets obtained can be increased by 8 times, and the efficacy is also greatly improved. Many farmers worry that the efficacy of the drug should not be completely on the surface of the crop, so they will increase the amount of water. This will not improve the efficacy and reduce the efficacy. Because the drops of the leaves on the surface of the crop leaves are limited, when the spray amount exceeds a certain limit, the fine droplets on the leaves will gather into the large droplets to reduce the amount of pesticide on the leaves. In order to improve the quality of the spray, it is necessary to improve the existing spray equipment, reduce the aperture of the spray, reduce the flow of the spray, and keep the spray head and the crop at a distance of more than 20 cm when spraying, forming a good atomization effect, and adding at the time of spraying. The silicone spray auxiliaries can reduce the surface tension of the liquid and reduce the loss of the liquid due to bounce, especially in the thicker waxy crops. 4. The concept of disease prevention needs to be changed For the prevention and control of crop diseases, the common practice of many farmers is to see the doctors, cure and treat them lightly. Some farmers said that in order to treat the disease, a single agent of enoylmorpholine, metalaxyl and cymoxanil has many special effects drugs, and these drugs are used for prevention and treatment before the disease occurs. . This kind of active disease prevention and control method is widespread in many places. Once the drug effect is found to be reduced, the dosage is increased. The long-term use of a certain agent alone will inevitably lead to premature resistance of the pathogen, and will face a situation of no cure when the disease is outbreak. It is necessary to change the existing concept of prevention and control, adhere to the principle of prevention-oriented and comprehensive prevention, scientifically select pesticide varieties, and avoid mixing of various preparations of the same active ingredient. It is recommended to use a mixture of different ingredients and protective preparations to delay the resistance. occur. 5. Misunderstanding of pesticide compounding At present, farmers hope to solve all the pest problems once and for all, and often mix pesticides of different types and different dosage forms, and there are many problems. First, there is a misunderstanding of the second dilution. The correct way is to dilute the several pesticides to be used separately, dilute one kind of pour into the sprayer and then dilute one, and then proceed in order, so that the role of secondary dilution in improving the effect can be truly exerted. Second, the order of administration of different dosage forms during compounding affects the performance of the drug solution. The medicine and fertilizer are foliar fertilizer, wettable powder, water-dispersible granules, suspending agent, microemulsion, water emulsion, water agent and emulsifiable concentrate, so that the mixed agent has good stability. Third, the pH of the drug affects the efficacy of the drug. Improper compounding is prone to acid-base neutralization. For example, copper preparations with a large proportion of bacterial diseases can be discolored and precipitated when mixed with other chemicals. The efficacy of the lighter will be weakened, and the serious ones may cause phytotoxicity. 6. Humidity and temperature will affect the effect of the drug. For example, when the dew is not dry, the dew will dilute the concentration of the solution. Excessively high or low temperatures will affect the efficacy of the drug. In general, the temperature is better in the range of 20 30 °C. In short, it is irrational to hope that the special effects medicines are irrational. The medicines that go to the disease can not be met. In order to improve the efficacy, it is necessary to find the factors that limit the improvement of the efficacy from the above points. Unfavorable factors, maximize the effectiveness of the drug. This article URL: What factors will affect the efficacy of pesticides? Diagnostic Devices,Diagnostic Medical Devices,Medical Routine Diagnostic Tools,Medical In Vitro Diagnostic Tools Surgimed Medical Supplies Co.,Ltd , https://www.surgimedcn.com
What factors will affect the efficacy of pesticide use?