Eye spot disease on sugarcane, the causative agent is Helmintho sporiumsa cchari, which is a fungal disease that causes brown to red spots to appear on the leaves, which negatively affects the photosynthesis process and the health of the plant. This disease is considered one of the agricultural challenges that reduces productivity. The quality of the cane crop. Therefore, we on the World of Plants website have explained the causes of eye spot disease on sugarcane, its symptoms, and the preventive measures that must be followed.
Cause of eye spot disease in sugarcane
- Eye spot is transmitted by conidia, which are abundantly produced on leaf lesions and dispersed by wind and rain.
- High humidity and dew formation also help the germination of fungal spores.
- Colonization of younger leaves is also faster than in older leaves.
- Transmission does not occur through seeds.
- Mechanical transmission by equipment and human activity is also not a problem.
Symptoms and damage of eye spot disease on sugarcane
Symptoms appear in the form of oval brown to red spots, 0.4 to 0.5 mm long and 0.5 to 2 mm wide, with yellow-brown margins.
The brown color extends upward to the top of the leaf, where multiple infections occur, and the spots can connect with each other so that the entire leaf becomes infected.
Symptoms appear more on younger leaves. In severe infestations, the leaves rot and fall. This is known as the acute form of the disease.
Prevention and treatment of eye spot disease in sugarcane
Adopting the following measures can reduce the incidence of the disease to a minimum. It is sprayed with 0.2% copper oxychloride or 0.3% mancozeb, with 2 to 3 sprays at a rate of one spray every 7 days.
Symptoms of eye spot disease on sugarcane
Symptoms of the disease initially appear as red spots on both sides of the leaf. Later, oval ulcers with red to brown margins appear.
Within 1-3 days of inoculation, sugarcane leaves infected with Bipolaris sacchari appear as small red spots on both surfaces of the leaf.
The spots then become oval along the axis parallel to the main veins. The margin color ranges from red to brown. Then the center of the spot becomes gray or tan. The spots come together and form long lines.
Sugarcane seedlings infected with the blight may die 12-14 days after planting as a result of top rot in severe cases.
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