Armillary rot on hazelnuts is considered one of the most dangerous diseases that affect hazelnut plants, leading to deteriorating tree health and reducing their productivity. In this article on your site, WORLD OF PLANTS, we will discuss the symptoms of this disease and methods of prevention and treatment to preserve the hazelnut crop.
Symptoms and effects of armillary rot on hazelnuts
Armillaria Root Rot disease on hazelnuts, also known as Mushroom Root. This disease causes general weakness of the trees and causes yellowing and falling of the leaves. In the case of severe infection, the branches die from the tips. When removing the bark of the affected trees in the area of the trunks near the surface of the soil, the presence of mycelium growths is noted. White, fan-shaped, spreading between the wood and bark
The rhizomorphs extend on the infected roots and are threads of hyphae in the form of cylindrical ropes with a dark brown or black peel with a diameter of 1-2 cm. The fungus
The cause is mushroom-type fruit bearings that reach a length of 7-25 cm. At the top of the bearing is a fleshy layer with a diameter of 5-15 cm. On the lower surface there is a fertile layer composed of basidiomycetes containing basidiomycete spores.
Prevention and treatment of armillary rot on hazelnuts
- Destroying the fruiting bodies before the germs mature.
- Removing and uprooting infected trees, burning them, and disinfecting the soil with carbon disulphide or lime.
- If the infestation occurs in trees that are difficult to uproot, it is recommended to make a trench 1 foot wide and 2 feet deep around these infected trees in order to prevent the spread of rhizomorphs to neighboring healthy trees.
- Spray a ferrous sulfate solution around the bases of trees to prevent spores from growing and mycelium from being exposed.
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References
Armillary mold on hazelnuts - green sage
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