Ten combinations of pesticides
2022-08-27 00:03:41
1. The combination of pest control and protection of natural enemies. The types of harmful organisms are different in different periods, and the types of natural enemies are also different. While controlling harmful organisms, it is necessary to protect and utilize natural enemies. For example, some plants have a serious occurrence of certain plant leaf mites, while leaf-eating pests are lighter and do not reach the control index. Therefore, 15% scented emulsifiable concentrate and 20% 螨 can be selected when using the medicine. For specific killing agents such as dead net plastic suspending agents, do not use broad-spectrum insecticides such as Kung Fu, Killing and other insects. In this way, it not only kills the cockroach pests, but also effectively protects the natural enemies such as ladybugs, grass ridges and red-eye bees.
2. The combination of biopharmaceuticals and chemical pesticides. Biological pesticides such as Bacillus thuringiensis and Beauveria bassiana have strict requirements on temperature and humidity. After hitting the target, there is a physiological and biochemical process in the harmful organisms, which has a slower effect, but the drug lasts for a long time, while the chemical pesticides are large. Some have the effects of knockdown, contact killing, fumigation, systemic absorption, stomach poisoning, etc., and the effect is quicker. For example, in the pear orchard where the P. sinensis is more serious and the algebra is not neat, use 25% chlorfenapyr No. 3 1000-2000 times solution + 50% malathion emulsifiable concentrate 1000 times solution for prevention and treatment. The effect is very good. Both pesticides are low in toxicity, which not only overcomes the shortcomings of slow killing of chlorfenapyr, but also compensates for the short residual period of malathion. It can also be used as a compatibilizing agent such as avermectin or Bt, and the effect is not bad.
3. The combination of insecticide and fungicide use. In production, diseases and pests often occur simultaneously with the growing season, so the method of compounding pesticides should be adopted in prevention and control. For example, the occurrence of pear hibiscus is also the stage of pear black spot disease, which can be controlled by 10% imidacloprid wet powder 5000 times solution + 40% carbendazim WP 1000 times mixture.
4. The method and concentration of pesticides are combined with different dosage forms and different contents. Pesticide manufacturers make different dosage forms and contents in order to adapt to different regions and different uses. Therefore, when using pesticides, it is necessary to combine different dosage forms and contents, and choose different methods and concentrations. For example, malathion has 45%, 50% emulsifiable concentrate, 70% crude oil and 25% oil. 45% and 50% malathion EC are generally used 1000-2000 times, while 70% of crude oil is sprayed with ultra-low volume of aircraft, only 50-60 grams per acre, and 25% oil is 150-250 per acre. Gram.
5. Use agents in combination with different types of pests. Whether it is insecticides or fungicides, a considerable part is mainly for certain types of pests or a certain kind of pests, even for different periods of certain pests (nymphs, larvae, pupa, adults, eggs). Developed, such agents have poor or only auxiliary effects on other pests, and are even ineffective. For example, 5% Nisola's main role is to target the eggs and larvae of spider mites, but it is not effective for cockroaches, and has poor control effect against rust and cockroaches. The fungicide is divided into two major categories of fungi and bacteria. If it is not clear whether it is a fungal disease or a bacterial disease, it will be blindly used. The effect is certainly not ideal.
6. The prevention period is combined with the drug and dose. The different developmental stages of a plant, the same type or the different occurrences of a certain pest are different in response to the agent, and the dosage and dosage used are not the same. For example, avermectin has an effect on larvae and eggs, but has no effect on cockroaches and adults. It cannot be used in the flood season and adult stage. For example, arsenic mixture (sulphur-sulfur suspension) is used to control pear hibiscus and Kang’s. Whitefly, the different degrees of Baume used in different periods, generally used 3 to 5 degrees before the pear white period, and 0.3 to 0.5 degrees after the balloon period, otherwise it will cause phytotoxicity.
7. The concentration of the drug is combined with the temperature and humidity, and the strong and weak sunlight. In production, the higher the temperature, the more severe the pests occur. The higher the concentration of pesticides used by many farmers, the more they think they can't be cured. In fact, the main reason for the uncontrollable one is that the leaves are large, the second is the thick leaves, and the third is the concealment of pests, which brings certain difficulties to the operation. Whether it is insecticide or fungicide, its control effect is affected by temperature, temperature and sunlight, and strong and weak sunlight. Under normal circumstances, the higher the temperature, the worse the stability of the pesticide's drug properties, the faster the decomposition, the higher the drug effect, then the concentration should be relatively low. The greater the humidity of the fungicide, the worse the effect, and the relative use concentration should be increased.
8. Combination of specific use, alternating use and mixed use of pesticides in prevention and control.
9. Choose to use pesticides in combination with the sensitivity of the plant to pesticides. Some plants are sensitive to certain pesticides, such as peaches, cherries, apricots, and plums, which are sensitive to dichlorvos, which are easy to cause large and deciduous fruit. They should be banned on such plants; some insecticides and fungicides The use of a slight concentration causes Sydney tiger skin disease, which seriously reduces the value of the commodity.
10. Use the combination of the agent and the auxiliary. Regardless of whether the fungicide or the insecticide is generally spread, the permeability is poor, and the protective effect of the pest's own protective film or secretion, which brings great difficulties to the prevention and control of such pests. It has a good penetration and spreading effect, and it is very effective to add 0.3% detergent or 1000 times of harm to the pests such as pear flower nets, pear hibiscus and scale insects. Good penetration and expansion have enhanced the efficacy.
2. The combination of biopharmaceuticals and chemical pesticides. Biological pesticides such as Bacillus thuringiensis and Beauveria bassiana have strict requirements on temperature and humidity. After hitting the target, there is a physiological and biochemical process in the harmful organisms, which has a slower effect, but the drug lasts for a long time, while the chemical pesticides are large. Some have the effects of knockdown, contact killing, fumigation, systemic absorption, stomach poisoning, etc., and the effect is quicker. For example, in the pear orchard where the P. sinensis is more serious and the algebra is not neat, use 25% chlorfenapyr No. 3 1000-2000 times solution + 50% malathion emulsifiable concentrate 1000 times solution for prevention and treatment. The effect is very good. Both pesticides are low in toxicity, which not only overcomes the shortcomings of slow killing of chlorfenapyr, but also compensates for the short residual period of malathion. It can also be used as a compatibilizing agent such as avermectin or Bt, and the effect is not bad.
3. The combination of insecticide and fungicide use. In production, diseases and pests often occur simultaneously with the growing season, so the method of compounding pesticides should be adopted in prevention and control. For example, the occurrence of pear hibiscus is also the stage of pear black spot disease, which can be controlled by 10% imidacloprid wet powder 5000 times solution + 40% carbendazim WP 1000 times mixture.
4. The method and concentration of pesticides are combined with different dosage forms and different contents. Pesticide manufacturers make different dosage forms and contents in order to adapt to different regions and different uses. Therefore, when using pesticides, it is necessary to combine different dosage forms and contents, and choose different methods and concentrations. For example, malathion has 45%, 50% emulsifiable concentrate, 70% crude oil and 25% oil. 45% and 50% malathion EC are generally used 1000-2000 times, while 70% of crude oil is sprayed with ultra-low volume of aircraft, only 50-60 grams per acre, and 25% oil is 150-250 per acre. Gram.
5. Use agents in combination with different types of pests. Whether it is insecticides or fungicides, a considerable part is mainly for certain types of pests or a certain kind of pests, even for different periods of certain pests (nymphs, larvae, pupa, adults, eggs). Developed, such agents have poor or only auxiliary effects on other pests, and are even ineffective. For example, 5% Nisola's main role is to target the eggs and larvae of spider mites, but it is not effective for cockroaches, and has poor control effect against rust and cockroaches. The fungicide is divided into two major categories of fungi and bacteria. If it is not clear whether it is a fungal disease or a bacterial disease, it will be blindly used. The effect is certainly not ideal.
6. The prevention period is combined with the drug and dose. The different developmental stages of a plant, the same type or the different occurrences of a certain pest are different in response to the agent, and the dosage and dosage used are not the same. For example, avermectin has an effect on larvae and eggs, but has no effect on cockroaches and adults. It cannot be used in the flood season and adult stage. For example, arsenic mixture (sulphur-sulfur suspension) is used to control pear hibiscus and Kang’s. Whitefly, the different degrees of Baume used in different periods, generally used 3 to 5 degrees before the pear white period, and 0.3 to 0.5 degrees after the balloon period, otherwise it will cause phytotoxicity.
7. The concentration of the drug is combined with the temperature and humidity, and the strong and weak sunlight. In production, the higher the temperature, the more severe the pests occur. The higher the concentration of pesticides used by many farmers, the more they think they can't be cured. In fact, the main reason for the uncontrollable one is that the leaves are large, the second is the thick leaves, and the third is the concealment of pests, which brings certain difficulties to the operation. Whether it is insecticide or fungicide, its control effect is affected by temperature, temperature and sunlight, and strong and weak sunlight. Under normal circumstances, the higher the temperature, the worse the stability of the pesticide's drug properties, the faster the decomposition, the higher the drug effect, then the concentration should be relatively low. The greater the humidity of the fungicide, the worse the effect, and the relative use concentration should be increased.
8. Combination of specific use, alternating use and mixed use of pesticides in prevention and control.
9. Choose to use pesticides in combination with the sensitivity of the plant to pesticides. Some plants are sensitive to certain pesticides, such as peaches, cherries, apricots, and plums, which are sensitive to dichlorvos, which are easy to cause large and deciduous fruit. They should be banned on such plants; some insecticides and fungicides The use of a slight concentration causes Sydney tiger skin disease, which seriously reduces the value of the commodity.
10. Use the combination of the agent and the auxiliary. Regardless of whether the fungicide or the insecticide is generally spread, the permeability is poor, and the protective effect of the pest's own protective film or secretion, which brings great difficulties to the prevention and control of such pests. It has a good penetration and spreading effect, and it is very effective to add 0.3% detergent or 1000 times of harm to the pests such as pear flower nets, pear hibiscus and scale insects. Good penetration and expansion have enhanced the efficacy.
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