Disease and Pest Control of Malus truncatum

Common diseases and pests of Malus truncatum

Diseases

The management of the Chinese honeysuckle is simple, but it is easily harmed by diseases and pests. The main disease is rust. Rust disease attacks the crabapple every year. In severe cases, a large number of leaves begin to fall off during the growing season in July and August, affecting its growth.

Rust is a fungal disease that can overwinter on branches in the form of mycelium and is a stubborn disease.

Pests

The main insect pests are the pear-crowned bug and the peach aphid.

The pear-crowned bug can cause the leaves of the crabapple tree to turn yellow and fall off, with the most serious situation occurring from June to September. The peach aphids are concentrated on young shoots, causing the leaves to curl, and they appear in large numbers from April to June. Both of these pests are likely to cause sooty mold disease.

Prevention and control of diseases and insect pests of Malus truncatum

prevention

Pay more attention to observation in daily life, clean up dead branches and rotten leaves in time, keep the surrounding environment clean and well ventilated.

Strengthen cultivation management, and appropriately increase the application of phosphorus fertilizer and potassium fertilizer and reduce the application of nitrogen fertilizer.

Drug management

Before the occurrence of diseases and insect pests in summer, you can use dichlorvos solution, cypermethrin emulsion solution, etc. to control them. Spraying Bordeaux mixture carbendazim wettable powder or carbendazim wettable powder can effectively prevent and control rust.