Common diseases and insect pests of Phalaenopsis and their control methods

Phalaenopsis is a kind of special plant, it belongs to a kind of orchid, where is it special? Because it is a plant with only one trunk stem, its appearance is very beautiful, and it is a very ornamental plant. Phalaenopsis is generally sold in florists, which is very suitable for cultivation at home. At the same time, many cultivation partners are at a loss after being eroded by diseases and insect pests, so Shuai Shuai will introduce to you the common diseases and control methods of Phalaenopsis.

I. anthrax

1. Etiology

Anthracnose is a plant-type disease caused by poor ventilation in the growing environment of plants.

2. Symptoms

Anthrax mainly attacks the leaves of Phalaenopsis. At the initial stage of the disease, the leaves will breed some maculae, which will be relatively small at first, will slowly grow into a circle with the passage of time, and the disease spots will develop into patches in the later stage, and finally become black spots.

3. Prevention and cure

From the etiology, we can know that it is mainly caused by the airtight growth environment of Phalaenopsis, so we should start with the etiology, first put Phalaenopsis in a cool and cool place to grow, and then apply some appropriate amount of zinc fertilizer to it. Zinc can make the resistance of leaves better, and you can also spray some Bordeaux solution plus chlorothalonil solution, which can be sprayed every other week. If you are already sick, you should spray anthrax net, twice at a time, once every other week.

2. Grey mold

1. Etiology

Botrytis cinerea is a plant disease caused by low temperature, high humidity and very humid surroundings.

2. Symptoms

The main harmful part of Botrytis cinerea is the flower. at the beginning of the disease, some waterlogged spots appear in various parts of the flower, and then slowly turn into a large patch, which, if serious, will kill the whole Phalaenopsis flower, so it greatly reduces the ornamental value of Phalaenopsis.

3. Prevention and cure

First of all, we make adjustments according to the cause, to keep our Phalaenopsis growing environment dry, to control its growth to the most suitable temperature, and then to reduce the flowers that have become sick, to prevent and control the harm to other healthy flowers, and to avoid infection. then spray Dysen zinc wettable powder, dock solution, spray once a day, about 2-3 times.

3. Soft rot

1. Etiology

Most of them are caused by the growth environment of high temperature and high humidity, which has been in this environment for a long time.

2. Symptoms

Soft rot mainly harms the leaves, at the beginning of the disease, there will be some transparent and immersed spots on the leaves, in the later stage of the disease, these spots will make the leaves rot, and then die, and there is a foul smell, and even endanger the plants.

3. Prevention and cure

First of all, to control the temperature and humidity of the growth environment in the most suitable range, water can not be irrigated so frequently, and the diseased spots should be reduced to prevent contagion. In addition, the leaves are sprayed with agricultural streptomycin, polyantimycin and bacillus special wettable powder, once every ten days, three times.

The above are the common diseases and insect pests of Phalaenopsis and their control methods. Have you learned it? If you suffer from the above diseases, you can first cut off the source of the disease, directly reduce the severity of the disease, and then control the environmental factors and spray it.