How to deal with expired pesticides? Pesticide expiration does not mean failure does not advocate all destruction
When it comes to expired pesticides, everyone's first reaction is to dispose of them. Just as milk has expired, everyone is sure to throw away the first reaction. But are expired pesticides all gone or have failed? In fact, this is not the case. So, can the expired pesticides be used? Then look down. First of all, many people think that since it is an expired pesticide, according to the general habits, it must be "deterioration, failure", and can no longer be sold or used. In fact, pesticides are a special commodity, and their shelf life is determined according to the expected control effect of plant diseases and pests under normal doses. Many expired pesticides, as long as the dosage is properly adjusted, strictly in accordance with scientific methods, still have good insecticidal and disease-preventing effects. The general commodities such as expired foods are obviously "ineffective, deteriorating" or not "safe". They cannot be used to solve problems by eating more and more. Have Secondly, pesticides are highly toxic and polluting and cannot be easily destroyed. Even professional technicians who use special technical measures to destroy it can only minimize pollution and have a high cost of destruction. Therefore, it is not recommended to destroy all expired pesticides. Third, before the use of the drug, we must see the date of manufacture and the shelf life. If the shelf life has not yet arrived, it should be used strictly in accordance with the amount of guidance. If the shelf life is too late, the dosage should be adjusted according to the efficacy of the drug. Because some biological pesticides have reduced biological activity after expiration, the efficacy is weakened; while some chemical components become high after the pesticide expires, the toxicity is enhanced. Therefore, when using outdated pesticides, the initial use amount must be sprayed according to the instructional dosage. After 3-5 days after use, the results of killing pests and diseases are checked. If the effect is not very satisfactory, the dosage can be basically increased in the original; After the second spray, the result is still not obvious, you need to change the pesticide or use the pesticide alternately; if the effect is significant after use, you can continue to use it. Fourth, we must grasp the dosage according to the stage of crop development. Especially in the seedling stage of the crop, the leaf area is small, and the dosage should be reduced accordingly, but the pesticide should still be blended according to the proportion of the guidance. At other stages, an appropriate amount of expired pesticides can be added. Finally, pesticides are sprayed evenly. When spraying pesticides, the medicine should always be connected to the pressure mark line of the air chamber. Under such pressure, the sprayed medicine will form fine droplets, which can be evenly attached to the front and back of the blade. Generally, when spraying, the nozzle is placed under the crop blade, the mouth is facing upward, and the front and back of the blade can be evenly sprayed without changing the position of the nozzle. Generally, it is better to spray once. It is not advisable to spray multiple times at the same time, otherwise it is prone to phytotoxicity. In fact, expired pesticides are not all “failed, degraded†pesticides, but pesticides that may not achieve the expected results according to the original dosage. Many expired pesticides can still be used after appropriate adjustments. Moreover, from the perspective of environmental protection, it is obviously more cost-effective to “use†expired pesticides than to spend more effort. (Pesticide Assistant) This article URL: How to deal with expired pesticides? Pesticide expiration does not mean failure does not advocate all destruction
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