Gummosis is a common disease of purple leaf plum, which also threatens the growth of many flowers.
When purple leaf plum gets gum disease, branches and fruits will flow gum and the plant will grow weak. When the plant of Prunus ziyeensis leaves gum, it will swell and deform in the diseased part, and even cause the branches to die in serious cases. When the fruit is infected, it will flow gum and crack.
Purple leaf plum appears gum disease is the invasion of fungus or disease and insect pest more, or it is when breed prune, water and fertilizer are improper cause..
In order to prevent gum disease, it is necessary to strengthen management. Reasonable maintenance measures are not needed. In addition, timely prevention and control of diseases and insect pests are also needed, and pruning work is also reasonable. Before purple leaf plum blossoms, you can scrape off the colloid, and smear it with the elixir.
The porosities of Prunus ziyeensis are harmful to the visual bacteria, mainly to the leaves, branches and fruits. Leaves will produce spots, and dry off, branches will appear ulcer, fruit will grow spots, depression.
When purple leaf plum appears perforation disease, need to strengthen management, apply more organic fertilizer, do not lean on nitrogen fertilizer. Pruning should be reasonable. When pruning in winter, it is necessary to cut off the dead branches and clean the fallen leaves. In addition, there are dozens of spray, before germination, you can spray some Bordeaux solution, after germination, you should choose to spray streptomycin sulfate solution, zinc sulfate lime solution, etc., spray 2-3 times.
Powdery mildew of purple leaf plum is a very serious disease, which will damage the leaves of purple leaf plum and make the affected leaves appear powdery mildew.
For powdery mildew, prevention is the main way to do a good job in sanitation and centralized destruction of leaves. In addition, in the early stage of powdery mildew, 77% of WP can be sprayed, or 25% of WP can be used for treatment.
