How to identify diseases and insect pests of orchids?

The symptoms of rational diseases of orchid peanut are often characterized by plant discoloration, such as yellowing and shedding of leaves, scorching of leaf tip or leaf edge, rotting roots and so on.

The parasitic diseases of orchids are fungal diseases, bacterial diseases, viral diseases and parasitic pests. Their common symptoms are:

1. Fungal diseases: common symptoms are leaf discoloration, decay, tissue necrosis (disease spot, ulcer, blight, rot). Atrophy, deformity, gall tumor, etc.

two。 Bacterial disease; symptoms are watery spots, rotten spots, peculiar smell, scorch, wilting, and acute local necrosis.

3. Virus disease: the main symptom is irregular macula on the leaf surface, also known as mosaic disease. Local concave caused by necrosis of mesophyll tissue. The damaged plants are deformed, clustered and short.

4. Parasitic pests: crustaceans, mites, nematodes, etc., which cause yellow spots on the leaves of orchids. These parasites are visible to the naked eye and should be regularly observed and checked at ordinary times so as not to prevent and cure them when they become a disaster.

In addition to parasitic diseases, there are also traumatic pests. The obvious feature of traumatic insect pests is forest disability. Such as ants cripple roots, mice and cats cripple leaves. Mice and cats peeing in orchid pots is a great harm to orchids. Snails, mole crickets and so on will cause scars on the leaves of orchids.

Orchids are basically free from diseases and insect pests in their native place. After artificial cultivation, the diseases are more and more harmful, and the root causes are the discomfort of ecological environment, improper cultivation measures and poor management methods.

The most fundamental way to control orchid diseases and insect pests is to improve the management level of cultivation techniques. And adhere to the prevention-oriented, comprehensive control, grasp the law of disease, identify the nature of the disease, seize the most effective period of control, the right medicine to control orchid diseases and insect pests of the basic principle.

Zhejiang Hongliming