Symptoms and control methods of sugarcane maculopathy

Sugarcane cultivation on dry sloping land can be a profitable venture for farmers. However, during the elongation phase of sugarcane growth, a common issue known as sugarcane leaf spot disease may occur. This fungal infection significantly affects productivity, making timely **pesticide** application essential to manage the outbreak effectively. The disease typically begins with small spots on the leaves, which then spread across the entire leaf, turning them red or purplish in color. As the infection progresses, it spreads from the initial center outward, damaging the plant’s ability to perform photosynthesis. This leads to reduced yields—sometimes by as much as 10% in mild cases and over 30% in severe instances. High humidity, warm temperatures, and typhoon conditions create ideal environments for the disease to spread rapidly, often carried by wind and rain. To prevent and control sugarcane leaf spot, farmers should avoid planting single variety crops and instead use a mix of different maturity types. Selecting resistant or immune varieties is also crucial. Regular monitoring is necessary, especially between July and September, to detect early signs of infection. Diseased and dead leaves should be removed promptly to improve air circulation and light penetration in the field, reducing overall humidity. Proper disposal of infected plant material is important to prevent spore spread. Additionally, ensuring good drainage in the fields is vital. After a typhoon, damaged sugarcane should be supported, and nitrogen fertilizer should be applied to help the plants recover more quickly. In June and July, when the disease first appears, immediate action is key. One effective treatment is spraying a Bordeaux mixture made by dissolving 0.5 kg of copper sulfate and 0.5 kg of lime in 50 liters of water. Alternatively, a 500–1000 times diluted carbendazim solution can be used. Another option is mixing 1 kg of sulfur powder with 4 kg of lime powder and applying it to the leaves on a sunny morning before the dew dries. These methods can help reduce the spread and severity of the disease, protecting the crop and ensuring better harvests.

Garden Landscape Light

LED Garden Spike Spotlight

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