Pest and disease control of black pine

Diseases

Disease Type

The main disease that may occur in this type of pine tree is dieback, which is a parasitic pathogen with relatively weak parasitic ability. They basically lurk inside the tree, and in fact, if the rainfall is normal, the bacteria will not harm the tree. However, if there is too much rain, too little rain, or the weather is too cold, the health of the tree itself will decline. Only at this time can this pathogen harm the black pine. But don't underestimate this disease, as it can kill the entire tree in severe cases.

Disease control

Therefore, it is very important to prevent and treat this disease. First of all, we need to strengthen management and provide sufficient fertilizer. Fertilization can be done around the tree. But you must also keep a certain distance from the tree trunk, about one meter. If there are seriously diseased trees nearby, you must act decisively and remove them immediately. For trees that are not seriously infected, you can choose to remove their infected dead branches and leaves, as well as the surrounding grass. And they cannot be left randomly, but those diseased branches must be destroyed in a centralized manner. In addition, there are branches that grow too densely, which will block the sunlight that the branches can reach. In this case, the densely grown branches should be selected and the weak ones should be removed directly.

Pests

Pest types

This tree is susceptible to many pests, such as pine tip borer, pine caterpillar, etc. Among them, the pine tip borer usually emerges around 11 a.m. If it appears on young plants, it may directly lead to the death of the young plants.

Pest Control

You should observe more often and take immediate action if you find any pests. Because even early discovery can reduce wounds and avoid the occurrence of diseases. The best time to control is when the overwintering adults appear, and a certain dose of cypermethrin emulsifiable concentrate can be used. If you don't want to use chemicals, you can also use other methods to lure and kill them.