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What diseases and insect pests do Magnolia have and how to control them

Gustavo Fring
2020-06-26 09:50:03
It is easy to be infected with anthrax. First of all, prevention, ventilation and management of water and fertilizer should be strengthened. After the disease, chlorothalonil should be used for spraying treatment. Chlorosis is also one of the diseases. 0.2% ferrous sulfate solution can be used to irrigate the roots. The main pests are grubs, which can be treated with zinc thiophosphate emulsion. Coir moth is also one of the pests. This kind of insects usually gather in groups and need to be treated in time.

I. diseases

1. Anthrax: this disease is mainly harmful to the leaves. Irregular spots appear from the tip of the leaves. There are also small black particles on the surface of the leaves. It is mainly caused by the impermeable growth environment or improper application of water and fertilizer. To treat this disease, we should first adjust the growth factors, strengthen ventilation, promote air circulation, and strengthen the management of water and fertilizer. If you need chlorothalonil for spray treatment after the onset of the disease.

Magnolia

2. Chlorosis: it is also one of the diseases. In the early stage of the disease, the chlorophyll decreases, and in the later stage, the leaves gradually turn yellow, which leads to the decline and death of the plants. 0.2% ferrous sulfate solution can be used to pour some into the root to cure the disease.

Magnolia

II. Pest

1. Grub: this kind of insect is mainly harmful to the underground roots and hinders the absorption function. It can be irrigated with 1000 times of zinc sulfur and phosphorus emulsion, which also has good effect.

Magnolia

2. Coir moth: it is harmful in larval stage. This kind of insect usually gathers in groups, and it will bite the leaves, fruits and young shoots, causing no growth in the area, not only affecting the appearance, but also causing serious problems in growth. If the disease occurs, it can be treated by spraying 800 times of fenitrothion cream, which can remove the big coir moth and reduce the harm in this respect.

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