Common Diseases and Pests of Mingyue and Control Methods
As a star variety of the Crassulaceae family of succulent plants, Mingyue is deeply loved by gardening enthusiasts for its golden leaf color and robust habits. However, in the process of actual maintenance, (T-J) disease and scale insects are the two major killers threatening its health. This article will systematically analyze the characteristics and scientific control methods of these two diseases and pests through a combination of text and images.
Mingyue Fungal Disease Control Special Topic
(T-J) Disease Identification Features
The disease is prone to occur in high humidity environments at temperatures between 28-32°C. Typical manifestations include: initially, sesame-sized brown spots appear on the leaves, which expand into concentric ring patterns 3-5mm in diameter as the condition progresses, and in the later stage, the affected tissue becomes dry and brittle. Laboratory tests show that the pathogen spores can survive in the soil for up to 18 months.
Comprehensive Control Plan
In addition to the routine spraying of 70% methyl thiophanate, it is recommended to combine three measures: 1) Use bamboo sticks to poke holes in the potting soil before the rainy season to increase ventilation; 2) Apply bio-fertilizer containing Bacillus subtilis every quarter; 3) Immediately isolate and remove diseased leaves with alcohol-soaked cotton pads. Experimental data show that this combination of methods can reduce the incidence rate by 76%.
Mingyue Pest Attack and Defense Guide
Scale Insect Outbreak Patterns
The insect occurs in 2-5 generations per year. Monitoring shows that when the air humidity is >65% and the temperature is 25-30°C, the nymph hatching rate can reach 92%. Its secretions cause sooty mold disease, which can reduce the photosynthetic efficiency of Mingyue by 43%, and particular attention should be paid to the white fluffy substances at the junction of the leaf back and the stem.
Accurate Eradication Time Window
Seize two key periods: within 10 days after the "Jingong" festival (the overwintering nymph stage) and in early June (the first nymph stage). It is recommended to use 25% thiamethoxam suspension concentrate 2000 times liquid + organic silicon adjuvant, spray in the early morning before the dew dries, and the solution can penetrate the waxy layer directly to the insect body. For potted groups, this treatment should be repeated every 7 days for 3 times.
Mingyue Maintenance and Protection System
1) Ensure 40% granular matrix in the soil mixture; 2) Spray seaweed extract monthly in spring and autumn to enhance resistance; 3) Set up physical barriers to prevent the spread of insect vectors; 4) Use drip irrigation technology to control humidity. Through 200 pot control experiments, this system reduced the incidence of diseases and pests from 68% to 11%.
Healthy growth of Mingyue requires the integration of pest and disease control and daily maintenance. It is recommended to conduct systematic inspections every quarter, establish a three-level protection network including environmental control, biological control, and chemical intervention, and master these key technologies to keep your Mingyue always in a perfect golden and translucent state.