Gyeongbuk Punggi Ginseng Research Institute Warns of High-Temperature Damage to Ginseng During Heatwave After Monsoon!

Ginseng Shade Netting Requires Supplementation, Ventilation, and Soil Moisture Management

Gyeongbuk Provincial Agricultural Research and Extension Services (Punggi Ginseng Research Institute) Urges Caution in Ginseng Management During Heatwaves After the Rainy Season.

[Asia Economy Yeongnam Reporting Headquarters Reporter Kim Gwiyeol] The Gyeongbuk Provincial Agricultural Research and Extension Services (Punggi Ginseng Research Institute) has urged caution to prevent heat damage to ginseng cultivation fields during the heatwave period following the monsoon season.

Ginseng is a semi-shade-loving, cool-temperature medicinal crop that prefers a cool climate. Its optimal growth temperature is around 20℃, and when temperatures exceed 30℃, photosynthesis stops and respiration increases, causing a decrease in yield.

Under high-temperature conditions with direct sunlight, leaf scorch (sunburn) occurs, and exposure to heatwaves of 35℃ causes heat damage.

Every year, about 10% of ginseng farms experience heat damage during the heatwave period lasting until mid-August after the monsoon, especially in young 2- to 3-year-old roots.

When heat damage occurs on the aboveground parts of ginseng, severe cases result in the entire aboveground part dying, which also reduces productivity the following year.

In 5- to 6-year-old roots, severe heat damage causes internal browning and white spots during red ginseng processing, leading to quality degradation.

To mitigate heat damage, it is effective to cover the basic shading net with a black shading net and install it 20?30cm above the main stem area to lower the temperature effectively.

Also, if soil moisture is insufficient, heat damage can worsen, so maintaining appropriate humidity is necessary. For dry soil, watering 15L per 1.62㎡ (per plot) at weekly intervals is recommended.

Shin Yongseup, Director of the Gyeongbuk Provincial Agricultural Research and Extension Services, said, “Ginseng is vulnerable to high temperatures, so it is important to manage shading facilities thoroughly during heatwaves and proactively control secondary diseases and pests to prevent damage.”

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