Common Diseases and Control Methods of Zibao
Zibao, as a beloved succulent plant, often faces disease threats that can impact its healthy growth. This article systematically analyzes the identification characteristics of leaf spot and rust diseases and provides scientific control solutions to help growers accurately respond to disease challenges.
Atlas of Zibao Disease Diagnosis
Leaf Spot Disease Pathological Characteristics
Zibao leaf spot disease presents typical concentric circle lesions: initially, red-brown spots appear on the leaf surface (about 2-3mm in diameter), which expand to irregular gray-brown patches (up to 1/3 of the leaf area) as the disease progresses. The black-brown ring pattern around the lesion edges is clearly visible. When humidity is >70%, black mold-like substances (conidial masses) can be seen on the surface of the lesions.
Signs of Rust Infection
The characteristic manifestation of Zibao rust disease is orange-yellow pustular eruptions (uredinia), densely distributed on the back of the leaves. In severe cases, both the front and back of the leaves show rusty powder-like substances. The transpiration rate of the diseased plants increases by 30%-50%, accompanied by secondary symptoms such as leaf curling and growth stagnation.
Zibao Disease Control System
Physical Control Measures
Implement a three-step treatment immediately upon detecting diseased leaves: ① isolate the diseased plant within a radius of 1 meter ② wear sterilized gloves to remove the diseased tissue ③ apply charcoal powder to the wound to prevent secondary infection. It is recommended to conduct a full plant examination weekly, focusing on hidden areas such as the back of leaves and the base of the stem.
Chemical Control Solutions
For leaf spot disease, it is recommended to use a 25% azoxystrobin suspension at 1500 times the dilution (every 7 days, for 3 consecutive sprays); for rust disease, prefer 30% benzoxazole microemulsion at 2000 times the dilution plus an organic silicone additive. Alternate the use of different mechanisms of action to avoid resistance.
Zibao Health Management Strategy
Establish a preventive maintenance system: maintain a day-night temperature difference of 8-10°C, use bottom渗透式 irrigation (keeping soil moisture at 40%-60%), and apply seaweed acid water-soluble fertilizer monthly to enhance disease resistance. It is recommended to install an air circulation fan to ensure a ventilation rate of >0.5m³/min in the cultivation environment.
By precisely identifying symptoms, implementing staged control measures, and standardizing environmental parameters, a three-in-one plan can significantly improve the success rate of Zibao disease control. Regularly use multiparameter meters to monitor key indicators such as EC value and pH, and build a plant health warning system to prevent diseases before they occur.