South Korean ginseng farmers are being advised to harvest root crops with tractor-mounted harvesters set 20cm deep to prevent root damage, as m.dailian.co.kr reported.
This guidance is important because improper handling can cause raw ginseng, which has a moisture content of approximately 75%, to decay if left at room temperature or lose value due to moisture loss in dry environments. Even minor physical trauma or environmental fluctuations can affect the product.
- Harvest with precision: When using tractor-mounted harvesters, insert the blade more than 20cm deeper than the surface of the ridge and operate at low speeds to prevent roots from being cut or broken. For the 3m sections at the ends of ridges where machine rotation is difficult, it is safer to dig by hand using a hoe.
- Prioritize airflow: Use ventilated cardboard boxes for packaging and avoid airtight plastic packaging, which can cause moisture to build up inside and degrade quality.
- Control the climate: Maintain a constant, low storage temperature between 3 and 8°C and manage to prevent sudden temperature changes to suppress moisture loss.
The Mechanism of Post-Harvest Degradation in Ginseng
The high water content (approximately 75%) in raw ginseng creates a state where it can easily decay if left at room temperature, or lose significant commercial value if exposed to a dry environment. To prevent damage, farmers should first remove stems and covers and inspect the direction of the rhizome (head) before working. After harvesting, fresh ginseng should be moved immediately to a shaded area to avoid direct sunlight. It is also necessary to lightly remove soil and strictly separate healthy ginseng from those damaged by pests or diseases to prevent the spread of rot.
These recommendations highlight the RDA's specific instructions. The 20cm harvesting depth is a measure to prevent roots from being cut or broken. Avoiding direct sunlight and using ventilated boxes are key to managing the product. Avoiding airtight plastic packaging is essential because moisture accumulation inside can lead to a rapid decline in quality.
Bridging Global Regulatory Standards for Herbal Products
The principles outlined by South Korea’s RDA focus on preventing contamination and degradation through careful management from the harvesting stage to low-temperature storage. By following these meticulous standards, the RDA aims to protect farmer income.
Careful Handling Protects Farm Income
“Ginseng’s marketability can drop significantly due to even minor wounds caused during harvest or inappropriate storage environments,” said Park Bu-hee of the National Institute of Horticultural & Herbal Science. “Please manage carefully from the harvesting stage to low-temperature storage to protect farm income.”
Comparative Post-Harvest Management Data
Adherence to these protocols is intended to prevent the phenomenon of ginseng rotting or drying out during the distribution process.
| Management Practice | Reported Spoilage Rate | Average Market Value Retention |
|---|---|---|
| Adhering to RDA Guidelines (20cm depth, ventilated storage, 3-8°C) | ||
| Standard Harvesting + Ambient Temperature Storage | ||
| Mechanical Harvesting (incorrect depth) + Airtight Plastic Storage |
Contraindications & When to Consult a Doctor
If the root shows signs of rot, it should be managed to prevent the spread of decay.
