In life, if you find that the leaves of some flowers appear black spots with needlepoints, don’t take it lightly, which is why the flowers are stained with coal pollution. On June 4th, the staff of the Plant Protection Center of Shenyang City stated that if you find that the flowers on the streets, squares, parks, and green areas of the city are stained for coal contamination, you can call 23842171 or 23920151 for consultation.
In the case of flowers infected with coal pollution, the tip of the blade will appear black pulverized coal spots at the beginning of the disease, and the pulverized coal spots will have different sizes. With the gradual thickening of coal seams, it will affect the photosynthesis of flowers.
In general, petunias, cineraria, chrysanthemums, jade pods, Chinese rose and other flowers are susceptible to coal contamination.
Specific prevention methods are as follows: Ensure the ventilation and light transmission of flowers.
Because the occurrence of the disease is closely related to the aphids and whiteflies. Therefore, it is necessary to strengthen the control of insect pests such as locusts while maintaining flowers. Imidacloprid, buprofezin and other agents are available. If it is at the beginning of the disease, it can be rinsed directly with fresh water or sprayed on the leaves.
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