How to prevent and control common pests and diseases of the Radermachera sinica (China doll tree)?

The scientific name of the "China doll tree" is Radermachera sinica. It prefers a high-temperature, high-humidity environment with plenty of sunlight. It tolerates high temperatures but fears cold, prefers moisture and dislikes dryness. For cultivation, use loose, fertile, well-drained loam and sandy loam rich in organic matter. The flowering period is from May to September, and the fruiting period is from October to December. The common pest and disease control methods are described below:

Leaf spot disease: In a high-temperature, high-humidity environment with poor ventilation, its leaves are prone to leaf spot disease.
Control method: Whether indoors or outdoors, ventilation and light transmission should be strengthened to avoid prolonged water retention on the leaf surface, reducing the possibility of leaf spot disease. If a small number of diseased leaves are found, remove and burn them promptly, and regularly spray 50% carbendazim wettable powder at 600 times dilution, once every half month, for 3 to 4 consecutive times. For household potted plants, for disease spots appearing on a small number of leaves of individual plants, you can apply Dakning cream ointment, or use Penkejun at 800-**** times dilution for spraying.
Scale insects: Under conditions of high temperature and high humidity with poor ventilation, especially during autumn and winter when placed in a greenhouse for a long time, scale insects are prone to appear on its stems and leaves.
Control method: Strengthen ventilation and light transmission, and pay attention to controlling environmental humidity. If a small number of live insects are found, wipe them off promptly with a damp cloth, or remove them with transparent tape. For commercial cultivation, during the peak hatching period of the nymphs, spray with 25% buprofezin wettable powder at 1500 times dilution. Kuangshajie has a special effect on scale insect control; use Kuangshajie at 800-**** times dilution for uniform spraying.
Mites: The main damage symptoms are new leaves becoming wrinkled and curled, with an uneven leaf surface. It generally occurs from June to September. High temperature and dryness are conducive to a large outbreak of this pest, while under relatively humid conditions the pest occurs less. Mainly use acaricides such as pyridaben and hexythiazox.
Aphids: One of the most common aphids is the green peach aphid. Symptoms include wrinkled and deformed leaves, usually with glistening honeydew spots. Aphids can be seen with the naked eye. Control method: Spray with zinc phosphide, omethoate, deltamethrin, etc.

What are the common pests and diseases of the China doll tree, and the control methods for China doll tree pests and diseases

The China doll tree not only has an auspicious meaning, but also has the effect of absorbing formaldehyde and resisting bacteria. So there must be many friends growing it, but what are the common pests and diseases that harm the China doll tree? Below, we introduce the control methods for China doll tree pests and diseases, hoping to provide help to friends who grow China doll trees.

What are the common pests and diseases of the China doll tree, and the control methods for China doll tree pests and diseases

Leaf spot disease among the common pests and diseases of the China doll tree

In a high-temperature, high-humidity environment with poor ventilation, the leaves of the China doll tree are prone to leaf spot disease. At this time, the control method for China doll tree pests and diseases should be to strengthen ventilation and light transmission and avoid prolonged water retention on the leaf surface. If a small number of diseased leaves are found, remove and burn them promptly, and regularly spray 50% carbendazim wettable powder at 600 times dilution, once every half month, for 3-4 consecutive times. For household potted plants, for disease spots appearing on a small number of leaves of individual plants, you can apply Dakning cream ointment.

Scale insects among the common pests and diseases of the China doll tree

Under conditions of high temperature and high humidity with poor ventilation, especially during autumn and winter when placed in a greenhouse for a long time, scale insects are prone to appear on the stems and leaves of the China doll tree. At this time, the control method for China doll tree pests and diseases should be to strengthen ventilation and light transmission and pay attention to controlling environmental humidity. If a small number of live insects are found, wipe them off promptly with a damp cloth, or remove them with transparent tape. For commercial cultivation, during the peak hatching period of the nymphs, spray with 25% buprofezin wettable powder at 1500 times dilution.

Mites among the common pests and diseases of the China doll tree

For mites on the China doll tree, the main damage symptoms are new leaves becoming wrinkled and curled, with an uneven leaf surface. It generally occurs from June to September. High temperature and dryness are conducive to a large outbreak of this pest, while under relatively humid conditions the pest occurs less. At this time, the control method for China doll tree pests and diseases is to use acaricides such as pyridaben and hexythiazox.

Aphids among the common pests and diseases of the China doll tree

One of the most common aphids on the China doll tree is the green peach aphid. Symptoms include wrinkled and deformed leaves, usually with glistening honeydew spots. Aphids can be seen with the naked eye. At this time, the control method for China doll tree pests and diseases is to spray with zinc phosphide, omethoate, deltamethrin, etc.

What are the common pests and diseases of the China doll tree, and the control methods for China doll tree pests and diseases are introduced here. To grow the China doll tree well, you should also understand its growth habits. The China doll tree likes high temperatures and plenty of sunlight. The soil requirement is preferably loose, fertile, well-drained loam and sandy loam rich in organic matter.