Common Diseases and Pests of Epiquien and Control Methods
As a rare variety of orchids, Epiquien is favored by horticulture enthusiasts for its unique spotted leaves. This article systematically analyzes the characteristics of three typical diseases and pests, and provides a comprehensive prevention and control plan including environmental regulation and chemical treatment to help you cultivate healthy and sturdy Epiquien.
White Silk Disease Control System
Symptom Identification Features
This disease often occurs during the rainy season with excessive humidity, initially presenting as white cobweb-like mycelium at the base of the leaves, which then causes root browning and rot, leading to the plant's collapse.
Three-Level Control Strategy
1. Immediately replace the contaminated substrate, and use pentachloronitrobenzene powder for soil disinfection. 2. Enhance ventilation in the cultivation environment, use ceramic stones for proper drainage. 3. Isolate and destroy severely affected plants, and spray 25% triazole ketone emulsion 2000 times on surrounding plants for prevention.
(T-J) Disease Comprehensive Response
Disease Development Pattern
In high temperature and humidity environments, leaves develop concentric ring-like brown spots, and in the later stage, black sporulation plates can cause more than 30% yield loss.
Prevention and Control Cycle Management
• Prevention period: Spray 80% mancozeb 600 times solution monthly. • Incidence period: Alternate between 25% propiconazole emulsion 1500 times solution and Bordeaux mixture. • Recovery period: Apply potassium dihydrogen phosphate to enhance disease resistance.
Scale Insect Eradication Plan
Pest Identification Points
In the nymph stage, the body surface has not yet formed a wax layer, which is the key window period for prevention and control. Adult insects often gather on the back of leaves to absorb sap and secrete honeydew, which can trigger sooty mold.
Double Eradication Technique
Physical control: Use a soft brush dipped in 75% alcohol to manually remove adult insects. Chemical control: Choose 40% thiamethoxam water-dispersible granule 3000 times solution, focusing on spraying the axillary parts.
By establishing a three-in-one maintenance system of light (4-6 hours of scattered light daily), temperature control (18-28°C), and humidity (60%-75%), combined with regular pruning of diseased and damaged leaves, the incidence of diseases and pests can be reduced by over 80%. It is recommended to conduct plant protection inspections every quarter to achieve long-term healthy growth management of Epiquien.