The poison has expired, is it dead?

When it comes to expired pesticides, everyone's first reaction is to dispose of it, just like milk expires, and everyone must throw it away as the first reaction
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But are all expired pesticides deteriorated or expired? In fact, this is not the case
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So, can expired pesticides be used? Then look down
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? First of all, many people think that since they are expired pesticides, according to general habits, they must be "deteriorated and expired" and they can no longer be sold or used
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But in fact, pesticide is a special commodity, and its shelf life is determined according to the expected control effect that should be achieved against plant diseases and insect pests under normal dosage
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Many expired pesticides can still have good insecticidal and disease prevention effects as long as the dosage is appropriately adjusted and used in strict accordance with scientific methods
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On the other hand, general commodities such as expired food are obviously "invalid, spoiled" or not "safe", and the problem cannot be solved by eating more and using more
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? Secondly, pesticides are highly toxic and polluting, and we cannot easily destroy them
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Even professional technicians who use special technical measures to destroy it can only reduce pollution as much as possible, and the cost of destruction is relatively high
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Therefore, it is not advocated to destroy all expired pesticides
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? Third, you must see the date of production and the expiration date before using the medicine.
If the expiration date has not yet arrived, you must use the dosage strictly according to the instructions; if the expiration date has passed shortly, the dosage should be adjusted appropriately according to the efficacy of the drug
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After the expiration of some biological pesticides, the biological activity decreases and the efficacy weakens; while the concentration of some chemical pesticides becomes higher after the expiration date, and the toxicity increases instead
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Therefore, when using outdated pesticides, the initial dosage must be sprayed in accordance with the recommended dosage.
After 3-5 days of use, check the insecticidal results.
If the effect is not very satisfactory, you can basically increase the dosage appropriately; such as 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
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? Fourth, the amount should be determined according to the stage of crop development
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Especially for crops in the seedling stage, the leaf area is small, and the amount of pesticides should be reduced accordingly, but the spraying of pesticides must still be mixed in proportion to the amount of guidance
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In other stages, the amount of expired pesticides can be increased appropriately
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? Finally, pesticides should be sprayed evenly
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When spraying pesticides, make sure that the syrup is always connected to the pressure scale of the air chamber.
Under such pressure, the sprayed syrup turns into fine droplets that can evenly adhere to the front and back of the leaves
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Generally, when spraying, place the nozzle under the crop blades, with the mouth facing upward, and spray evenly on the front and back of the blade, without changing the position of the nozzle
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Generally, it is better to spray once, and it is not advisable to spray multiple times at the same time, otherwise it is prone to phytotoxicity
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In fact, expired pesticides are not all “invalidated and deteriorated” pesticides, but pesticides whose original dosage may not achieve the expected use effect
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After appropriate adjustment of the dosage, many expired pesticides can still be used
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Moreover, from the perspective of environmental protection, it is obviously more cost-effective to "use" expired pesticides than to spend effort to destroy them
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Do you think this is the case? Source: Living in My Dream