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Bean Yellow Mosaic
Beans are easy to grow, help improve soil structure, and add nitrogen to the ground. They can also become infected with bean yellow mosaic.
Three different bean mosaic diseases commonly occur in North America: bean common mosaic, cucumber mosaic, and bean yellow mosaic. These are all viral diseases that cause downward cupping and wrinkling of leaves, especially as leaves get older, along with the telltale mosaic pattern. Bean leaves that develop a bright yellow mosaic pattern may be infected with the bean yellow mosaic virus. There are several strains of bean yellow mosaic (BYM). In addition to beans, bean yellow mosaic can infect peas, peanuts, soybeans, black locust, and fenugreek.
Bean yellow mosaic symptoms
You can differentiate between bean yellow and the other mosaic infections because bean yellow has a yellow mosaic rather than a light or dark green mosaic. Bean yellow mosaic also exhibits as bright yellow spots on leaves. Plants infected at an early stage of development can become severely stunted. Remove them from the garden and toss them in the trash.
Bean yellow mosaic lifecycle
The bean yellow mosaic virus, or BYMV, commonly overwinters in legumes, such as alfalfa, clovers, fava beans, gladiolus, and vetch. The virus moves from plant to plant in aphids. When an aphid feeds on an infected plant, it becomes a carrier, transporting the disease to every plant it feeds on from that point forward.
Since resistant cultivars are not yet available, these tips may help prevent bean yellow mosaic in your garden:
Finally, if you see an infected plant, trash it.
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