Chrysanthemum, as a traditional ornamental plant in our country, is loved by people for its graceful posture and unique fragrance. In the process of growing chrysanthemums, many flower farmers encounter the problem of tumors on chrysanthemum leaves. This not only affects the appearance of chrysanthemums but may also lead to poor growth or even death. What are the reasons for tumors on chrysanthemum leaves? How can we prevent and treat them? This article will provide you with detailed answers.
Reasons for Tumors on Chrysanthemum Leaves1. Virus Infection: The most common cause of tumors on chrysanthemum leaves is virus infection, such as chrysanthemum yellowness virus, chrysanthemum latent virus, etc. These viruses invade the cells of chrysanthemum leaves, causing cell proliferation and forming tumors.
2. Bacterial Infection: Some bacteria can also cause tumors on chrysanthemum leaves, such as chrysanthemum pattern blight bacteria, chrysanthemum black spot bacteria, etc. These bacteria, after invading chrysanthemum leaves, will damage the normal growth of the leaves, leading to the formation of tumors.
3. Pest Damage: Pests like the chrysanthemum longicorn beetle and chrysanthemum borer can also cause tumors on chrysanthemum leaves. After these pests invade the leaves, they absorb nutrients from the leaves, leading to abnormal leaf growth and forming tumors.
4. Improper Fertilization and Watering Management: Issues like excessive or insufficient fertilization, and improper watering can also cause tumors on chrysanthemum leaves. Excessive fertilization can lead to high soil salinity, affecting the growth of chrysanthemums; improper watering can damage the root system, causing tumors.
Methods to Prevent and Treat Tumors on Chrysanthemum Leaves1. Preventive Measures:
(1) Choose healthy, virus-free chrysanthemum seedlings.
(2) Strengthen fertilization and watering management, fertilize and water appropriately to avoid high soil salinity.
(3) Regularly inspect chrysanthemum plants and deal with pests in a timely manner.
2. Treatment Measures:
(1) Virus Infection: Use virus inactivators, virus inhibitors, and other agents for prevention and treatment. Strengthen plant management to enhance plant immunity.
(2) Bacterial Infection: Use fungicides such as carbendazim, methyl thiophanate, etc., for prevention and treatment. Applying these agents in the early stage of the disease can effectively control the condition.
(3) Pest Damage: Use specific insecticides for pests like the chrysanthemum longicorn beetle and chrysanthemum borer. Pay attention to alternating the use of insecticides to prevent pests from developing resistance.
Tumors on chrysanthemum leaves are common problems in the process of growing chrysanthemums. Understanding their causes and prevention methods is crucial for improving the economic benefits of chrysanthemum cultivation. Flower farmers should strengthen plant management, deal with diseases and pests in a timely manner to ensure healthy growth of chrysanthemums. Choosing healthy, virus-free chrysanthemum seedlings and strengthening fertilization and watering management can effectively reduce the incidence of tumors on chrysanthemum leaves.