High Heat and Humidity Persist, Pest Outbreaks Abound... Ulsan Agricultural Technology Center Implements Emergency Management for Horticultural Crops

Ulsan City emphasized thorough management of pests and diseases in horticultural crops during hot and humid periods.

The Ulsan Agricultural Technology Center (Director Shin Taeman) recently urged that, due to the hot and humid weather, the occurrence of pests and diseases in major vegetables is expected to increase after July, so management should begin from the early stages of occurrence.

The center recommended that since hot and humid environments easily cause pest and disease outbreaks, it is advisable to spray a 0.2% urea solution 2 to 3 times at intervals of 5 to 7 days, focusing on areas with poor or stunted growth after the rainy season, to restore growth and enhance resistance to pests and diseases.

It pointed out that solanaceous vegetables such as chili peppers, tomatoes, and eggplants, which are mainly cultivated in open fields, require periodic pest control due to frequent occurrences of diseases like late blight, anthracnose, and damping-off.

Also, when the hot season fully begins, the temperature of the ground surface or plant body becomes higher than the air temperature, causing symptoms such as leaf scorch and fruit scorch.

At this time, when ground temperature rise and dryness overlap, nutrient absorption is hindered, making it easy for calcium-deficient fruits to occur, and temperature-sensitive aphids and thrips increase, potentially causing viral diseases.

The center pointed out that in facility cultivation areas, artificial cooling, shading, and ventilation should be appropriately used to prevent heat damage.

For open-field cultivation, it recommended periodic watering and covering furrows with straw or grass to prevent ground temperature rise and dryness damage.

To prevent calcium-deficient fruits, it advised spraying a 0.3% calcium chloride solution 2 to 3 times at 7-day intervals.

For more details, contact the Crop Environment Team at the Ulsan Agricultural Technology Center.

Ulsan City Hall.

This content was produced with the assistance of AI translation services.