A Detailed Guide to the Latest Control Methods for Common Pests and Diseases of Japanese Ginseng (Panax japonicus)

Japanese ginseng (Panax japonicus) is a common medicinal herb and a type of ginseng. Current production is mainly from wild sources, but in recent years there have been signs of artificial cultivation, and related techniques have already begun to take shape in places such as Yunnan. Below, let's take a look together at some of the diseases related to Japanese ginseng!

1. Root rot

Japanese ginseng cannot avoid root rot, a common disease of plants, and the main affected areas are concentrated in the root system and the rhizome near the ground. Outbreaks mostly occur in hot and humid seasons, triggered by long-term exposure to rain, and the root system will show obvious changes. In the early stage, the roots are rust-red and show no signs of decay, but as the disease worsens they can turn decayed black. Carbendazim is commonly used for treatment.

2. Damping-off

This mostly occurs during the seedling stage and directly causes seedling death. It is a disease caused by pathogen infection. The cause is that the seedlings have external wounds, and the soil layer being planted happens to contain the pathogen; as time passes, the pathogen enters the wounds and infects the seedlings. The seedlings first change color and then gradually wither. If the yellow-brown spots on the plant keep growing larger, it has become diseased. To prevent and control it, pour oxadixyl and cymoxanil into the affected area, applying it from the roots.

3. Blight

Blight is a general term, and various plants each have their own corresponding blight conditions. It mainly hinders leaf growth and causes leaves to turn yellow and wither. In Japanese ginseng blight, water-soaked spots of an unusual color appear on the leaves and then slowly spread; the centers of the spots begin to slowly turn yellow and withered, and finally it spreads through the entire plant. In the end the plant becomes listless and slowly dies. Bordeaux mixture can be used for prevention and control.

This pest problem is mostly caused by such larvae hidden in the planting site. If growers do not carry out corresponding insect removal treatment, the larvae will slowly reproduce and eat into the plant roots in the soil layer. This type of pest problem can occur multiple times a year, and the adults will lay eggs in the soil again, causing greater damage than the first time. The first occurrence is concentrated in early summer, around May. Farmers can mix phoxim granules into the soil to kill mole crickets or their larvae.

The above are some common pests and diseases of Japanese ginseng and their control methods. You can refer to the treatment methods above so that you have one more option ready, and later you will be able to grow it even better!