Pesticides are an important means of controlling pests and diseases, and they play an important role in the integrated control of pests and diseases. Even if they produce AA grade green fruits, they do not use pesticides at all. At present, the pesticide market is extremely chaotic, and there are many fake and inferior pesticides, which have caused considerable losses to agricultural production and farmers' income. Therefore, farmers are reminded to pay attention to the following problems when purchasing pesticides.
Buying pesticides must look at the active ingredients
Qualified pesticide products must be marked with the active ingredients in addition to the pesticide registration certificate, the permit certificate, and the manufacturer's address. For pesticides that do not contain the active ingredients, it is not clear which specific diseases or pests can be controlled. It should be regarded as a fake pesticide, and it is best not to buy it.
Take Shigao 10% water-dispersible granules and 40% Fuxing emulsifiable concentrate as an example. Shigao active ingredient is difenoconazole, and Fuxing's active ingredient is flusilazole, which are chemically synthesized triazole fungicides. The bactericidal mechanism is to inhibit the synthesis of the fungus ergosterol and cause the bacteria to die; it has the functions of protection, treatment and eradication. Shigao and Fuxing are low-toxic to humans and animals, safe to plants and the environment, and produce pollution-free fruits and A-grade green fruits.
High-priced pesticides, the cost of medication is not necessarily high
The annual expenditure on pesticides used to control pests and diseases requires a lot of money, and it is necessary to think about reducing the cost of medication. However, after accounting, it is found that the cost of pesticides with high unit prices is not high. For example, 40% Fuxing emulsifiable concentrate is priced at 700 yuan per liter (kg) of Fuxing emulsifiable concentrate, and the commonly used concentration for controlling pear black spot disease is 8000~10000 times. Use 8000 times, that is, 8000 kg of water per kilogram of Fuxing plus water, according to the calculation of 15 kg of liquid per tree per tree, the cost of medicine for each tree is 1.4 yuan. Prevention and treatment of pear black spot disease in the critical period using Fuxing 3 to 4 times can achieve the effect of disease-free leaves and diseased fruit throughout the year. If a low-priced pesticide is used, the cost of administration is not necessarily low due to the low use ratio and the number of uses, and the control effect is difficult to compare with Fuxing.
Pay attention to the boastfulness of the control object
Any pesticide can only be used for certain prevention and control objects. Before a certain pesticide is sold as a commodity, strict indoor and outdoor tests and field demonstrations should be carried out to clarify the control objects and control effects. Good pesticides will be marked with control objects, such as imidacloprid, AKTA, Ameren, aphids, whiteflies, spider mites, and hibiscus for sucking mouthparts; 15% anti-mycin is used to control apple spotted leaves Pear black spot disease; it has high control effect on diseases caused by Fusarium and Rhizoctonia at the time of funeral; insect growth regulator such as chlorpyrifos is suitable for controlling pests and mosquitoes of the leaf miner, Averm. It has high control effect on leafhoppers.
At present, the control targets of some domestic pesticides are seriously boastful. Some fungicides are labeled with many control objects, including bacterial diseases, fungal diseases (oculum and non-mycosis diseases), and even virus diseases, but actually This fungicide is not present. The boastfulness of the object of prevention and control is intended to attract buyers who do not know the truth.
Try to buy a single dose, use the compound carefully
The purpose of compounding two or more insecticides is to complement the insecticidal action and improve the control effect, and the compounding of the fungicide is to overcome or delay the resistance of the bacteria to certain obligate fungicides. Jinleiduome Mn-Zn, anti-virus cockroach, kelu, Anke Mn-Zn, Xiansheng, moldy gram, etc. are all good bactericidal compounding agents. A large number of compound pesticides appear on the market, some use a single agent mechanism of action similar, can not achieve synergistic effect; some are the compounding of pesticides to control different types of pests, although the formula is acceptable, but only in these pests to achieve prevention The indicator is applicable. However, it is difficult for two different types of pests to reach the control indicators at the same time. The use of such a compounding agent is actually a waste, increasing the cost of medication; some compounding agents do not indicate the active ingredients and do not indicate the content of the active ingredients. It should be regarded as a counterfeit pesticide.
China Pesticide Network recommends that you try to purchase a single pesticide for a pest control. If there are two or more pests and diseases that need to be controlled at the same time, and different types of pesticides are needed, you can choose a highly targeted pesticide to mix. It is not excluded to use a formula with a reasonable formula.
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