Common insect pests of Photinia

Common diseases and pests of Photinia truncatum include rust, longhorn beetle pests, red spider mites, etc.

Rust of Photinia

The pathogen of rust is fungus. It is caused by multicellular rust fungus, which produces spores that make the leaves turn yellow, or the spots on the front of the leaves start out orange-yellow, and the spot tissue gradually becomes fatter and thicker, and the back of the leaves bulge, affecting the appearance.

As time goes by, the spots will expand, possibly becoming round and black, eventually causing the leaves to wither and fall off.

Longicorn beetle pests on Photinia chinensis

When a Chinese photinia tree is infested by longhorn beetles, the female longhorn beetles will bite through the bark and then lay eggs on the branches. The newly hatched larvae will eat under the bark, and as they grow they will gradually bore into the trunk and roots, gradually making the branches of the Chinese photinia tree hollow and causing it to die.

Red spider mites infestation on Photinia

Red spider disease is a reddish-brown oval-shaped disease. Red spiders will weave webs and lay eggs on the leaves of the plant. They use their mouthparts to pierce the branches and leaves to suck the juice of the branches and leaves, causing the chlorophyll in the leaves to be destroyed, causing the leaves to gradually turn yellow, and gray-yellow spots to appear on the leaves until the leaves dry up and fall off.

Prevention and control of common insect pests of Photinia truncatum

Rust control of Photinia truncatula

The rust disease of Chinese photinia can be treated by pruning: completely cut off the branches and buds with fungi on the Chinese photinia tree before the spring rain.

In addition, you can also spray 350 times diluted pentachlorophenol sodium plus 1.01 kg before the spring rain to reduce diseases.