Lagerstroemia Indica Pest Control: Ziweirong (Lagerstroemia Scale): This common pest typically has two generations per year, with eggs or nymphs surviving the winter. Female adults and nymphs feed on buds, leaves, and branches, leading to blackening of the stems and leaf drop, which significantly hinders the tree’s growth. Their excrement can cause sooty mold, making it one of the most damaging pests for Lagerstroemia. Control Measures: Enhance quarantine practices to prevent the introduction of pathogens, apply fertilizers properly to boost plant resistance, ensure good air circulation and light exposure, avoid overcrowding, and perform pruning in winter and early spring to remove infested parts. When infestations are small, manual removal is effective. Powdery Mildew of Lagerstroemia: One of the most frequent diseases affecting Lagerstroemia, powdery mildew primarily targets the leaves, with young foliage being more vulnerable than older ones. It can also affect young shoots and flower buds. The disease starts as small pinkish spots that grow into round lesions, eventually merging into larger patches. In severe cases, the entire leaf turns yellow and falls prematurely. The optimal temperature for this disease is between 19-25°C, with high humidity, making it most prevalent in spring and autumn, especially during the fall season. The pathogen overwinters in buds or mycelium, and spores are spread through the air. Infected plants can be re-infected multiple times during the growing season. Once infected, the photosynthetic activity of the leaves drops by more than half, while transpiration increases, accelerating leaf aging and death. Control Methods: 1. Improve soil fertility and ensure proper drainage to reduce humidity levels.
2. Reduce the source of infection by removing diseased branches, leaves, and buds through regular pruning during the growing season. Burn all infected material to prevent further spread.
3. Apply fungicides such as 25% Triadimefon wettable powder at a 3000x dilution, 70% Thiophanate-methyl wettable powder at 1000x, or 80% Mancozeb wettable powder at 500x. Alternating between different products can enhance effectiveness. Proactive management and early intervention are key to preventing serious damage from these pests and diseases. Regular monitoring and timely treatment will help maintain healthy and vibrant Lagerstroemia plants throughout the year. Emergency LED bulkhead lights with IP65 rating are durable and suitable for outdoor use. The monthly auto-self test function ensures that the lights are always in working order. These lights are designed for ceiling mounted installation, making them ideal for use in corridors, stairwells, and other areas where emergency lighting may be needed. The built-in 7.4V LiFePO4 battery provides reliable backup power in the event of a power outage. These lights are a practical and reliable solution for emergency lighting needs. Emergency Bulkhead,Emergency Bulkhead Light,Led Emergency Bulkhead,Led Bulkhead Emergency Light JIALINGHANG ELECTRONIC CO.,LTD. , https://www.jlhemergencylighting.com