Chrysanthemum Diseases  

Your chrysanthemum plant needs to be guarded against diseases and insects, though it does have a strong constitution and is able to survive most ailments.

The following are the most common diseases that may affect chrysanthemum, and tips on what you can do to control them.

Chrysanthemum Diseases:

Wilt (Fusarium oxysporum f.sp. chrysanthemi): This makes the leaves turn yellow or brown, leads to stunted growth and rotting of the root or the stem base. Proper sanitation, use of disease-free planting material and drenching the soil with Dexon are ways to control this disease.
                                                                                          

Rust (Puccinia crysanthemi): Rust usually strikes in early spring, leaving brown blister-like swellings on the undersides of the leaves. Removing the infected leaves and spraying the plants with Karathane of 025 percent concentration are effective remedial methods.

Septoria Leaf Spot (Sepotria chrysanthemella): Leaf spots happen during the rainy season, with the lowermost leaves getting infected first. Spraying Bavistin (0.05 percent) or Benomyl (0.1 percent) followed by Captafol (0.2 percent) and Carbendazim (0.1 percent) is recommended.

Stem Rot (Fusarium solani): Another rainy season infection, this leads to the discoloration and decay of the affected leaves. Root decay is seen only during advanced stages, and external symptoms of this disease are quite rare. Avoiding excessive moisture and spraying Bordeaux mixture (1 percent) are some ways of treating this disease.

Powdery Mildew (Oidium chrysanthemi): Older plants are more prone to this infection, particularly under humid conditions. The leaves start turning yellow and the fungus leaves a powdery coating on them. Good air circulation and Sulphur fungicides can help control this condition.

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Chrysanthemum Diseases

 

 

    
 

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