Leaf roll disease of geranium
Geranium leaf curl disease, also known as geranium wrinkle disease, is a viral disease and is only found in Shanghai.
Symptoms: the leaves of susceptible plants curled downward and atrophied. When the disease is serious, the plant necrosis.
Pathogen: the pathogen is geranium leaf roll virus (PLCV).
Disease regularity: the virus is transmitted by juice, grafting and soil, and no vector insects have been found. The symptoms of the disease are not obvious in summer and autumn, and the virus can be transmitted from the remains of the virus-carrying plants pruned.
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Ring disease of geranium
Geranium ring disease is a common leaf disease of geranium. It has a wide host range and can damage a variety of woody and herbaceous flowers, seriously affecting ornamental plants. Symptoms: at the initial stage of the disease, green spots appear on the susceptible leaves, and then the spots gradually expand, forming a larger round spot. The disease spot is dark brown and has concentric rings. In the later stage of the disease, a black-green mold layer appeared on the disease spot, which was the conidia of the pathogen. Pathogen: the pathogen is Alternaria alternata (AlternariatennuisNees).
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Processing of geraniums?
Processing of geraniums: potted geraniums are suitable for display in public places such as halls, dining cars and meeting places to form a warm atmosphere. Decorating the family balcony, windowsill and desk is more effective, blooming throughout the year, showing a scene of prosperity. Planting or decoration in the open field, decorating rock gardens, flower beds or flower paths can also show the beauty of the plant shape and color of geraniums.
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