Anthracnose of Lucky BamboosymptomIn the early stage of the disease, gray-brown spots appear on the leaf tips or edges. The spots are irregular or semicircular in shape, gray-white in the center, dark brown on the edges, and with a yellow halo on the outside. The spots have obvious or unclear ring patterns and small black spots scattered on them. Prevention and treatment methodsIf diseased leaves are found in winter and spring, they should be removed in time, and quicklime should be sprinkled to disinfect the soil. Strengthen ventilation, control water appropriately, reduce the humidity of the potting soil, and apply appropriate organic fertilizer. The diseased and residual materials should be removed and burned in a centralized location, and quicklime should be spread to sterilize and disinfect the soil. Spray pesticides in time to control diseases, spray 3 to 4 times in a row, with an interval of 10 days. Dracaena stem rotsymptomStem rot of lucky bamboo can cause the plant to die and reduce its ornamental value. Mainly from May to September, when the weather is hot and humid, the base of the stem turns yellow and soft, the inside of the stem gradually turns red, and the plant rots from bottom to top. Prevention and treatment methodsBefore planting, you should choose high-quality varieties that have a certain degree of disease resistance. Pay attention to water control and avoid water accumulation. Remove diseased plants immediately when they are discovered to prevent them from infecting other plants. Once you find anything unusual about the stems of lucky bamboo, immediately disinfect them with 3000 times diluted 42% chloramphenicol powder or 1000 times diluted 88% mycobacterium hydrate. Lucky Bamboo Leaf SpotsymptomIn the early stage of the disease, the disease appears as brown spots with yellow edges; the spots gradually expand and become round, with gray centers, dark brown edges, and yellow surroundings; under humid conditions, black particles appear on the spots. Prevention and treatment methodsPrevent the plants from being too dense and maintain ventilation and light. When the growth is too dense, prune it in time and remove diseased leaves immediately. In the early stage of the disease, spray the leaves with 3000 times diluted 42% chlorpyrifos powder, once every 5 to 7 days, and spray 2 to 3 times in a row. Lucky Bamboo Root RotsymptomRoot rot mainly harms the roots of lucky bamboo, causing no buds to grow or uneven buds to grow, a low germination rate, or rot of the tender roots at the base of the plant's stem. Prevention and treatment methodsDuring daily maintenance, avoid rain and provide appropriate shade. Fertilize once a month, using a combination of organic and inorganic fertilizers. When lesions are discovered, spray the pesticide in time. First use 1000 times diluted 70% thiophanate-methyl, then 1000 times diluted 58% ridomycin mancozeb after 5 to 7 days, and then 1000 times diluted 75% thiophanate-methyl after another 5 to 7 days. The order of several agents can be reversed to reduce the drug resistance of the bacteria. |
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