To control vegetable diseases, fungicides are indispensable, and for the root diseases of vegetables, the application of fungicides to root is a most effective way. Although the fungicide filling operation is relatively simple, it also requires certain rules, otherwise the sterilization effect will be greatly reduced.
Drug selection should be reasonable
It is necessary to select bactericides with strong pertinence and better control effect. Do not blindly use drugs, so as not to delay the timing of prevention and control, and to reduce waste as much as possible.
Application concentration should be appropriate
Fungicides should be mixed with amino acid liquid fertilizers or hormones with stimulating root development as much as possible. The concentration of the liquid medium should not exceed 1500 times, to prevent excessive concentration of soil liquids around the vegetable roots, resulting in phytotoxicity.
Related matters should pay attention
The first is to take into account the soil organisms. The selected fungicides cannot destroy the biological population and ecological balance within the soil after being applied to the soil. Of course, if the vegetables have been diseased and must be sterilized with fungicides, then it is not necessary to consider whether the beneficial microorganisms in the fungicide will be damaged, so as not to cause a large loss, leading to an outbreak of the disease.
The second is not to water before irrigating. After watering, germs will spread with water, causing more dead trees. At the same time, watering can easily lead to the decrease of soil permeability, make the roots of vegetables lose oxygen, produce roots and roots, the resistance of plants is reduced, pathogens are more easily infiltrated, and the occurrence of dead trees is exacerbated.
The third is not to water immediately after irrigating. Watering immediately after irrigating will quickly dilute the liquid in the soil and reduce the bactericidal and disease-preventive effects. If there is water shortage, you can pour small water in the planting ditch. It is advisable to use 1/3 of the ridge height on the surface of the water. Never cross the ridge surface.
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