When pesticides are used to control pests and diseases , it is often the case that the control effect is not good. In the case of unexplained reasons and lack of proper guidance, they often increase the amount of drug used, the concentration of use, the frequency of application and repeated use of drugs, and even the use of highly toxic pesticides and other banned pesticides, in order to achieve better control results. This not only increases the user's medication costs and labor costs, but also puts pressure on our food safety, environmental protection and sustainable agriculture. What are the main reasons for the poor efficacy of pesticides?
Do not understand technology, the target of prevention is not clear
When the disease is attacked, the insects are killed, and the grass is removed. This is first of all a diagnosis error, unclear discrimination, resulting in wrong medication, poor control and even phytotoxicity.
The timing of medication is not allowed
It is necessary to seize the opportunity to fight drugs. Only by understanding the laws and regulations of the pests and diseases, and taking medicine at the right time, can Qin effect.
The application time is not well grasped
The activities of insects are governed by the law of day and night, and they also have their own "biological clocks." Therefore, we should master the law of pest activity, and apply the medicine on time and in different times at different times to achieve the best results.
Improper application method
The occurrence, damage and habitat of pests in the field have a hazard site. This specific site is the target that pesticides should shoot. If the target is not shot, the pesticide control effect will be poor.
Increased resistance to pests and diseases
The resistance of germs and pests to pesticides is a real problem that hinders the effectiveness and potential efficacy of pesticides.
Limitations of pesticide self-control
Some pesticides have good control effects on certain pests and diseases, but they are powerless to other pests and diseases, and their control effects are extremely poor.
Reasons for water quality
Water has hard water and soft water. Well water, mining water, and spring water in some mountainous areas are mostly hard water. The effect of diluting pesticides is poor. Because of the minerals contained in them, the active ingredients of pesticides will be decomposed. The water in ponds, rivers and streams is mostly soft water with less mineral content. Dilution of pesticides is good, but if the pond water and river water are very turbid, it will also affect the efficacy of the drug.
Spraying liquid waste is big
At present, the spraying instruments commonly used in rural areas are labor-intensive, wasteful, coarse in fog and poor in control. The mist sprayed by the sprayer has poor adhesion and low deposition rate. The drug droplets fall into the soil and are lost in the water, which not only wastes the liquid, but also seriously pollutes the environment.
Reduction of natural enemies
Due to the large-scale application of highly toxic and high-residue pesticides in successive years, the natural enemies of pests have been greatly killed, the ecological balance has been destroyed, and the pests have once again become paralyzed, forming a vicious circle.
The same meteorological conditions and the control effect of pesticides are not related to each other. Different temperatures, humidity, light, wind, and cloudy have an impact on the occurrence, activity, and control of pests and diseases. If the wind big liquid drifts and blows away, it will affect the control effect. Applying an emulsifiable pesticide, it is required to spray without rain for 24 hours.
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