Red rot disease in sugarcane, the scientific name for which is Glomerella tucumanensis, is a fungal disease that affects the stems, leading to a decline in the quality and productivity of the crop. Therefore, we on the World of Plants website have explained the causes of red mold disease in sugarcane, its symptoms, and the preventive measures that must be followed.
Symptoms of red mold disease in sugarcane
- Red spots on stems and leaves.
- Discolored, moldy grains.
- Wilting and curling of leaves.
- Sour smell.
- Affected stems are pale in color and large red spots appear on the surface. A longitudinal section of the stem shows red rotten tissue in the white pulp, and in resistant plants, the red diseased areas are often limited to the inner parts as the disease progresses. Cavities may form inside the pulp as do bundles of strengthening fibers. Also visible, the leaves begin to wilt, the plants emit an unpleasant odor, their stems break easily under adverse weather conditions, small red oval or elongated lesions develop on the leaves along the middle, and sometimes along their entire length, the sheaths may contain red spots and small dark spots develop Only occasionally on the edges of the leaves.
Preventive measures for red mold disease in sugarcane
You must plant resistant varieties of plants, if they are suitable for your region, and use healthy seeds and seedlings from a certified source. You must obtain agricultural materials from healthy fields. Also, change the sowing time to avoid high or cold temperatures during the season, with the need to monitor the field or diseased plants remaining from the season. Previous or clumps regularly. Also, work to avoid root growths from diseased crops, with the necessity of removing plant residues from the field after harvest and burning them.
Furthermore, the field must be plowed several times to expose the fungal material in the soil to sunlight, and plans to rotate the crop well with non-susceptible plants for 2-3 years.
Cause of red mold disease in sugarcane
The symptoms are caused by a fungus called Gulmyra tucumensis that can only survive for short periods of time (months) in the soil.
Although it is not a true soil-borne disease, the remains of germs that reach the soil as a result of irrigation of crops may lead to infection in newly planted seeds or seedlings. The disease then spreads through spores produced in the middle vein or stems of infected plants and is transmitted by Wind, rain, heavy dew, and irrigation water. This disease also prefers cold, wet weather, high soil moisture, and monocultures.
Drought also increases the plant's susceptibility to disease. Besides sugarcane, the fungus can also infect small hosts such as corn and sorghum.
Prevention and treatment of red rot in sugarcane
- Use healthy cuttings in cultivation that are free of fungal spores.
- Avoid wounds or punctures caused by insects or mealybugs. To prevent fungus from entering the chopsticks.
- Burning crop residues after harvest.
عزق التربة ومقاومة الحشائش
- Moderate irrigation and improve drainage.
- Taking care of plant growth in terms of irrigation, fertilization, and preparing good soil.
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