Symptoms are mainly manifested in the leaves of sugarcane. There are single or several white or milky yellow or light green stripes on the leaves, and the width of the stripes is not uniform. Sometimes the whole leaf turns white, and the leaf is soft. The side branches or tillers that grow out of diseased cane plants are all white, and the severe leaf sheaths are also white, sometimes green patches appear on the white leaves, mottled and of varying sizes. The diseased plants are dwarfed, the stems are thin, the internodes shrink, and the top leaves come together.
The pathogen Mycoplasma like organism is called mycoplasma. Pathogens are present in screened phloem screens of diseased sugarcane plants. In addition to virus transmission through diseased seedlings, diseases can also be transmitted in the field through Taiwan's spotted fly dust mites and leaf mites (Matsumuratetlix hiroglyhious). This is the main route of second infection.
Transmission routes and disease conditions are preserved in diseased sugarcane, especially when the seedlings are kept at the base for several days. The seedlings that grow out are almost all diseased seedlings. They die one month after germination, and the incidence of leafhopper infestation is heavy. There are differences in disease resistance among varieties.
Prevention and control methods (1) Quarantine, the introduction of diseased cane seedlings from the ward is strictly prohibited. Regular inspection, found the diseased plant, immediately removed. (2) Cane gardens with a diseased plant rate of more than 10% are not suitable for perennial plants. Seriously diseased sugarcane gardens must not be planted. Cane seedlings in wards are not allowed to move outside the area to a disease-free area.
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