Prevention and Control of Edible Fungi Diseases, Beware of Orchid Scale Insects in Summer and Autumn

Scale insect is the largest pest of orchids, which mainly harms the leaves and stems of orchids, causing the leaves of orchids to turn yellow and wither, and even the whole plant to die. Many generations of reproduction in a year, parasitic concealment, not easy to be found, the body has a wax shell, medicament is not easy to infiltrate, cure difficult and other characteristics, to the majority of orchid lovers have brought trouble. Through the investigation, it is found that summer and autumn is the peak of scale insect reproduction, and the damage is the most serious season, so the following control methods are better.

During the nymph incubation period from June to September, the larvae had not yet formed a wax shell and were culled when the resistance was weak. The medicament uses 2000 times of methamidophos EC or 2000 times of dichlorvos EC. When spraying, 2000 times of methyl thiophanate wettable powder can be added to prevent orchid leaf spot. Secondly, when the scale insect larvae have formed a wax shell, use 1000 times liquid washing powder (no spice and no phosphorus) water, use a clean towel to wipe off the wax shell with mixed washing powder water, and then spray the above medicament. leaf surface, plant base, basin surface, basin outer wall, orchid rack and so on should be fully sprayed, and 2000 times liquid raw lime water should be used again to spray cultivation utensils and places to play the role of sterilization and disinfection.

Symptoms caused by adults of scale insects

Symptoms of adult nymph of scale insects

Effect of pesticide application