Now it is the high temperature rise, the pests and diseases of various vegetables are beginning to appear, and the medicinal root irrigation is a good way to treat pests and diseases. It is also being used by farmers friends in a wide range, although the medicinal roots are a line. The effective measures, but also very dangerous, must pay attention to when using, then what are the precautions for the filling of the medicine? Here is a detailed introduction to the contraindications of the medicine.
What are the precautions for filling the medicine?
Drug selection should be reasonable
To choose a highly targeted and effective fungicide , do not blindly use drugs, so as not to delay the timing of prevention, while reducing waste as much as possible.
Appropriate concentration
The fungicide should be mixed with humic acid liquid fertilizer or hormones with stimulating root development as much as possible. The concentration of the liquid medicine is generally not higher than 800 times, and the concentration of the soil liquid around the root of the vegetable is prevented from being too high, causing phytotoxicity.
Soil biology must be balanced
The selected biocide can not damage the biological population and ecological balance inside the soil after being applied to the soil. If the shed of the bacterial fertilizer has been applied, try not to use the bactericide to fill the roots to prevent disease, so as to prevent the beneficial microorganisms in the bacterial fertilizer from being killed, so that the bacterial fertilizer loses the fertilizer effect. If the vegetable has been diseased, it is necessary to use a bactericide to fill the root. Do not consider whether the beneficial microorganisms in the bacterial fertilizer will be damaged, so as to avoid the disease outbreak due to small loss.
Watering should not be done before rooting
First, because the root disease of vegetables has already occurred, if watering, the bacteria will spread with the running water, causing more dead trees.
Second, because watering easily leads to a decrease in soil permeability, causing hypoxia in the roots of vegetables, resulting in roots, reducing plant stress resistance, pathogens are more susceptible to infection, and the occurrence of dead trees is exacerbated. Therefore, it is not advisable to water before filling the roots.
It is not advisable to water immediately after root irrigation
Watering immediately after rooting will quickly dilute the liquid in the soil and reduce the effect of sterilization and disease prevention. Therefore, try not to water the water within a few days after the rooting with the fungicide. If there is water shortage, you can pour a small amount of water in the planting ditch. It is better to use 1/3 of the water surface to the ridge height. Never cross the ridge surface to avoid the concentration of the chemical solution in the soil being diluted.
Remedy for phytotoxicity should be timely
After irrigating with a bactericide, once the vegetables have symptoms such as wilting, yellowing, and stopping growth, they should be remedied in time to avoid further damage.
Remedial measures: First, quickly pour a clear water to dilute the concentration of the liquid in the soil; second, promptly use Aiduoshou or Yunda 120 spray to add roots to alleviate the phytotoxicity, prompt the roots to recover as soon as possible, and let the plants transfer Normal growth.
More pesticide knowledge , please pay attention to China Pesticide Network
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