Disease Prevention and Control of Aloe
As a succulent plant with both ornamental value and medicinal benefits, aloe often faces disease threats in home care. This article systematically analyzes the characteristics of rust disease, brown spot disease, and leaf blight, providing prevention and treatment solutions to help growers establish a scientific protection system.
Prevention and Diagnosis of Aloe Rust Disease
Recognition Features of the Disease
Rust disease often occurs in the plum rain season with high temperature and humidity. The pathogen spores are spread through the air and lie dormant in the soil surface over winter. Initially, orange-yellow blister-like protrusions appear on the back of the leaves, and as the disease progresses, the epidermis breaks, releasing dark brown powdery spores.
Comprehensive Control Plan
1. Regularly check both sides of the leaves, and cut off the affected spots immediately upon discovery. 2. Use UV disinfection lamp to treat the cultivation matrix. 3. Spray 25% triazole ketone wettable powder 2000 times liquid before the rainy season for prevention.
Systematic Control Strategy for Aloe Brown Spot Disease
Development Pattern of the Disease
The disease has a progressive characteristic. It initially presents as a 2-3mm diameter dark green infiltrating spot, which expands into round brown spots with changes in temperature and humidity. In the later stage, black conidiomata are produced, which can cause vascular necrosis in severe cases.
Four-Step Control Process
1. Choose disease-resistant varieties: such as Aloe arborescens, Aloe vera, etc. 2. Implement a crop rotation system: change the cultivation matrix every 2 years. 3. Precision water and fertilizer management: control the amount of nitrogen fertilizer and apply more phosphorus and potassium fertilizers. 4. Chemical control: alternate the use of chlorothalonil and mancozeb formulations.
阻断方案 for Aloe Leaf Blight Disease Transmission
High Incidence Pathology in Southern Regions
The disease is spread through irrigation water and piercing-sucking insects such as aphids. The lesions start at the tip of the leaf, showing a characteristic V-shaped expansion, and in the later stage, typical conidial chains of Alternaria species are produced.
Environmental Control Measures
1. Establish a physical isolation zone, and separately cultivate newly purchased plants for 2 weeks. 2. Install insect-proof nets to block the transmission medium. 3. Maintain a cultivation temperature of above 12°C in winter. 4. Spray the leaves with alginate calcium to enhance the defense of the cuticle layer.
Establishing a plant protection system that focuses on prevention and auxiliary treatment is key to the healthy growth of aloe. It is recommended to conduct systematic inspections every month, analyze the probability of disease occurrence based on temperature and humidity records, and use a combination of biological and chemical control methods. Also, pay attention to the rotation of different pesticides to avoid the development of resistance.