It is scientific to apply pesticides, especially for pesticide application in greenhouse vegetables in winter. Otherwise, not only will it not achieve the control effect, but it will also be susceptible to phytotoxicity. Therefore, attention should be paid to the application of pesticides.
Do not use live water to prepare pesticides. Because there are many impurities in the living water, it is easy to block the nozzle of the sprayer with its preparation, and it will also destroy the suspension of the liquid to cause precipitation.
Second, avoid using well water to prepare pesticides. Because well water contains more minerals, especially calcium and magnesium. These minerals are easily mixed with the chemical solution to produce a chemical action, and the formation of a precipitate reduces the efficacy.
Three bogey arbitrarily increase the amount of water. Excessive addition of water will reduce the concentration of pesticides. Spraying only a small amount of pesticide on the crop is not enough to kill the pest, and some pesticides may even fail completely. Excessive addition of water can also cause the loss of pesticides and lead to environmental pollution. Therefore, when formulating pesticides, the amount of water added should be strictly controlled according to their concentration range.
Four bogey to increase the amount of pesticides Before the pesticides are approved for production and sales, they must undergo a rigorous field efficacy test, and then determine the actual use data such as the amount of medication, the time of administration, and the number of applications. Therefore, according to the dosage specified in the instruction manual, the control effect can be achieved, and the increase of the dosage not only increases the input, but also causes the phytotoxicity of the crops, increases the residual amount of pesticides in the agricultural products, and aggravates the environmental pollution.
Five bogey irrational pesticide mixture Some pesticides can increase the control effect, reduce the dosage, or achieve the effect of both pests and diseases, and the mixed application is more labor-saving. However, some pesticides cannot be mixed and applied. For example, most of the organophosphorus pesticides will rapidly decompose and fail when they encounter alkaline pesticides or alkaline media. When you need to mix pesticides, you must understand the nature and characteristics of various pesticides, and find out whether they can be mixed. It is best to ask the relevant technicians for guidance before mixing.
Six bogey free use of expired pesticides Pesticides must be used within the shelf life, otherwise it will cause losses.
Seven bogey spraying pesticides during flowering period The flowering period of crops is young, the resistance to stress is weak, and it is prone to phytotoxicity. Therefore, it is necessary to avoid the flowering period when spraying.
Eight bogey spray pesticides before crop harvesting. The high-efficiency and highly toxic pesticide residue period is about 60 days, and the high-efficiency and low-toxicity pesticide residue period is about 15 days. Therefore, whether it is food, vegetables, fruit trees, it is forbidden to apply drugs before harvesting to avoid food poisoning.
Jiubai abuse of pesticides should be based on the type of crops, control objects and the performance of different pesticides to use the corresponding pesticides, to achieve the right medicine, while avoiding the long-term use of a certain agent.
Source: Henan Science and Technology News
Do not use live water to prepare pesticides. Because there are many impurities in the living water, it is easy to block the nozzle of the sprayer with its preparation, and it will also destroy the suspension of the liquid to cause precipitation.
Second, avoid using well water to prepare pesticides. Because well water contains more minerals, especially calcium and magnesium. These minerals are easily mixed with the chemical solution to produce a chemical action, and the formation of a precipitate reduces the efficacy.
Three bogey arbitrarily increase the amount of water. Excessive addition of water will reduce the concentration of pesticides. Spraying only a small amount of pesticide on the crop is not enough to kill the pest, and some pesticides may even fail completely. Excessive addition of water can also cause the loss of pesticides and lead to environmental pollution. Therefore, when formulating pesticides, the amount of water added should be strictly controlled according to their concentration range.
Four bogey to increase the amount of pesticides Before the pesticides are approved for production and sales, they must undergo a rigorous field efficacy test, and then determine the actual use data such as the amount of medication, the time of administration, and the number of applications. Therefore, according to the dosage specified in the instruction manual, the control effect can be achieved, and the increase of the dosage not only increases the input, but also causes the phytotoxicity of the crops, increases the residual amount of pesticides in the agricultural products, and aggravates the environmental pollution.
Five bogey irrational pesticide mixture Some pesticides can increase the control effect, reduce the dosage, or achieve the effect of both pests and diseases, and the mixed application is more labor-saving. However, some pesticides cannot be mixed and applied. For example, most of the organophosphorus pesticides will rapidly decompose and fail when they encounter alkaline pesticides or alkaline media. When you need to mix pesticides, you must understand the nature and characteristics of various pesticides, and find out whether they can be mixed. It is best to ask the relevant technicians for guidance before mixing.
Six bogey free use of expired pesticides Pesticides must be used within the shelf life, otherwise it will cause losses.
Seven bogey spraying pesticides during flowering period The flowering period of crops is young, the resistance to stress is weak, and it is prone to phytotoxicity. Therefore, it is necessary to avoid the flowering period when spraying.
Eight bogey spray pesticides before crop harvesting. The high-efficiency and highly toxic pesticide residue period is about 60 days, and the high-efficiency and low-toxicity pesticide residue period is about 15 days. Therefore, whether it is food, vegetables, fruit trees, it is forbidden to apply drugs before harvesting to avoid food poisoning.
Jiubai abuse of pesticides should be based on the type of crops, control objects and the performance of different pesticides to use the corresponding pesticides, to achieve the right medicine, while avoiding the long-term use of a certain agent.
Source: Henan Science and Technology News
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