Jade Dew Disease and Control Methods
As the "crystal pearl" of the succulent world, Jade Dew is deeply favored by horticulture enthusiasts for its translucent window surface. However, it is highly susceptible to diseases during maintenance, and timely intervention is necessary to prevent plant death. This article systematically analyzes the characteristics of two typical diseases and provides actionable control solutions.
Full Cycle Management of Jade Dew Root Rot Disease
Symptom Identification and Incidence Patterns
The base of the plant exhibits a translucent soft rot, and the center of the leaves gradually turns black and sinks. This disease is隐蔽, initially showing slow growth, and by the time the leaves show wrinkles, more than 80% of the roots have rotted. It is highly prevalent in late spring and early summer (March-May), and the transmission speed accelerates when the environmental humidity is greater than 70%.
Three-Dimensional Control Strategy
Use the "shallow burial and high pot" method when planting: the pot depth should be greater than 15 cm and the soil covering should not exceed 1/3 of the bulb. The matrix is prepared with珍珠岩: akadama soil: decomposed leaf soil in a ratio of 5:3:2. Implement a "dry-wet cycle" system for daily maintenance, and use an electric fan to assist ventilation for 2 hours after watering. Preventively water the roots with a 50% carbendazim solution (800 times dilution) every month, and switch to a metalaxyl (1500 times dilution) solution for continuous treatment 3 times (with a 5-day interval) at the early stage of the disease.
Comprehensive Control of Jade Dew (T-J) Disease
Disease Development Stages
In the early stage, needle-like rust spots appear on the leaf surface, which expand to concentric ring patterns with a diameter of 2-5 mm within 7 days. The peak incidence period is concentrated during the plum rain season (June-July), and the pathogen繁殖 speed peaks when the environmental temperature is between 28-32°C, with an increased incidence rate of 60% in plants with excessive nitrogen fertilizer.
Environmental and Drug Collaborative Management
Install temperature and humidity monitors to ensure that the maintenance environment has good air circulation and relative humidity below 55%. Isolate diseased leaves immediately and cut them 2 cm outside the healthy tissue using preheated horticultural shears (disinfected with alcohol). Alternate between spraying 70% methyl thiophanate (1000 times dilution) and 25% prochloraz (1500 times dilution), focusing on the areas with dense stomata on the leaf back.
By establishing a "prevention-monitoring-control" three-level protection system, the incidence of Jade Dew diseases can be significantly reduced. It is recommended to conduct a plant health check monthly, use pH test paper to monitor the matrix acidity and alkalinity (maintain between 5.8-6.5), and adjust maintenance strategies according to seasonal changes to keep the crystal Jade Dew vibrant and healthy.