Pesticide efficacy refers to the poisoning effect of pesticides on pests or weeds. In agricultural production, the most concerned issue for farmers' friends is the efficacy of pesticides, because the quality of pesticides directly cares about the economic income of farmers. However, in the actual production process, the efficacy of pesticides often does not work well, what are the reasons for the low efficacy of pesticides, and how to give full play to the efficacy of pesticides.
The summary of the Chinese pesticide network Xiaobian on "the reason for the low efficacy of pesticides and how to exert the efficacy of pesticides" is summarized as follows:
Before understanding the " points to give full play to the efficacy of pesticides ", the pesticide network Xiaobian first talked about the reasons for the low efficacy of pesticides.
The reason for the low efficacy of pesticides a <br> environmental factors play efficacy of pesticides and environmental reasons, the temperature, humidity, rain, light, air, soil and other properties directly related; e.g., herbicide acetochlor, trifluralin, The same dosage used in the cable and the dur, the herbicidal effect is poor during drought, and the herbicidal effect is high under suitable soil moisture conditions;
Second, the cause of pesticides Different pesticides, chemical composition, physical and chemical properties, mechanism of action, dosage and processing properties are different, directly or indirectly affecting the efficacy. For example, chlorpyrifos is effective against many lepidopteran pests but not against mites.
Third, the reasons for prevention and control of different pests and diseases have different living habits, even the same disease or pests, due to different developmental stages, the response to different pesticides or similar pesticides is not the same, often showing the difference in control effects. For example, the grass can be effective against most grass weeds and is not effective against broadleaf weeds; monocrotophos has a good effect on the first and second instar larvae of cotton bollworm, but it is less effective for larvae after 3 years old.
After understanding the reasons for the low efficacy of pesticides, we will focus on the key points of giving full play to the efficacy of pesticides .
Give full play to the main points of pesticide efficacy <br> First, the appropriate weather timely selection of appropriate pesticides climatic conditions change the effects of drugs, high temperatures can improve the efficacy; timely medication is the key to success or failure, for different crops and pests Choose different pesticides.
Second, accurately grasp the amount of medication, take the correct method of application according to the instructions on the pesticide label, according to the characteristics of the pests, the growth period of the crop, the method of medication to determine the concentration of the liquid, the amount of drug per unit area and the number of applications, to achieve Good control effect; in order to avoid environmental pollution and protect the safety of natural enemies and objects, it is necessary to pay attention to the application method.
3. Alternate use of pesticides Alternate application of pesticides can avoid the occurrence of drug resistance or reduce the resistance of pests and diseases, and improve the control effect.
Here, the pesticide network Xiaobian believes that everyone has a certain understanding of the " points to give full play to the efficacy of pesticides "; there are more pesticide information, pesticide companies , pest control and other pesticide information in China's pesticide network.
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