Prevention and treatment of mosaic disease (cmv) of geranium
The symptoms of the leaves are mosaic-like, the leaves are smaller than normal, and show uneven. Some varieties produce chlorotic spots and broken flowers.
The pathogen is cucumber mosaic virus (CMV).
The route of transmission is transmitted by sap and aphids.
Prevention and cure method
1. In the process of management and operation, often wash and disinfect with soapy water.
2. Timely control of aphids and eradication of surrounding weeds.
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Ring spot disease of geranium
[pathogen] Tobacco ringspot virus (Tobaccoringspotvirus,TomRSV), lethal temperature 58 ℃, geranium ringspot virus (prlargoniumringspotvirus,PRSV), lethal temperature 85 ℃. [symptoms] the leaves showed chlorotic maculae, ringspots and lines, the plant growth was short, and the flower development was abnormal. [incidence regularity and epidemic characteristics] selection of cuttings from diseased plants is the main way of virus transmission. Juice
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Black stem rot of geranium
Pelargonium black stem rot is a disease that occurs in the stem of pelargonium, which causes the stem of the plant to rot, so that the whole plant wilts and dies. Symptoms: the disease occurs on both cuttings and adult plants. The susceptible cuttings began to rot from the base of the stem, and gradually developed upward, resulting in death. After the onset of the adult plant, the diseased part became black, rotted, gradually developed upward, and finally the leaves fell off. when the disease was serious, the diseased part cut the stem around, resulting in the death of the plant. Pathogen: the pathogen is Pythiumsplendens
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