The common diseases and insect pests of Brazilian iron are spider, stem rot and common flat moth. Let's interpret them one by one.
Red spider, also known as red fire dragon, is a mite pest. The symptom of red spider is to gather on the leaf of Brazilian iron, absorb the juice of the leaf, make the leaf surface present many small yellow and white spots, reduce the chlorophyll of the leaf, make the green dark, thus affecting the ornamental value of the plant..
Stem rot will form many black spots in the phloem, gradually peel the phloem and then spread the pathogen to the xylem, causing the plant to rot, there will be small brown spots on the leaves, once wet, it will spread irregular large spots, even make the leaves yellow until death.
The moth mainly erodes the epidermis of plants. Destruction of dredged tissue, or even into the plant caused by hollow plant phenomenon, will seriously affect the growth of plants, is the whole plant dry until death.
It is necessary to clean the leaves of plants frequently and eliminate spiders artificially. Chemical agents can also be used to eliminate spiders. In spraying treatment, we must pay attention to the spraying on the back of the leaves, which will make the elimination effect better
Kill with fungicide. Or it can be watered with fungicides such as oxamycin.
Strengthen the inspection, found that there are such diseases and insect pests timely treatment and destruction, drug agents to eliminate
