Jeju broccoli spread of black spot disease and rot... call for control measures
Published 2025년 10월 14일
Tridge summary
(Jeju=Yonhap News) Reporter Go Seong-sik = The Jeju Agricultural Technology Institute urged active disease control on the 14th, stating that broccoli in Aewol-eup and Hallim-eup, the main production areas for winter vegetables, showed signs of spreading black spot and black rot diseases.
Early-maturing broccoli is experiencing black spot disease in the flower buds and black rot disease in the leaves, and early-maturing broccoli also shows initial signs of disease. The damage is spreading about two weeks earlier than usual years.
The signs of disease spread are analyzed to be due to hot and humid weather, with an average temperature last month 3.4 degrees higher than the average year and 20 days of rainfall, which is double the average year.
The Jeju Agricultural Technology Institute said that to prevent the spread of diseases, broccoli should not be planted densely and the surrounding drainage should be improved to ensure good water drainage. It also urged farmers to spray fungicides 2 to 3 times at intervals of 7 to 10 days if infection is detected early.
Diagnostic and control information for major broccoli diseases and pests can be found on the Jeju Agricultural Technology Institute website (https://agri.jeju.go.kr/agri/index.htm).
Black spot disease, caused by fungi, mainly occurs in overly moist and densely planted fields. It causes round or oval brown spots on the stems or leaf stalks, which gradually wither and die. If the flower buds are infected, black spots appear and, in severe cases, they rot, reducing marketability.
Black rot disease occurs when bacteria infect wounds caused by rain, wind, or insects. The tips of the leaves turn yellow, and in severe cases, the entire leaf turns brown.
koss@yna.co.kr
Early-maturing broccoli is experiencing black spot disease in the flower buds and black rot disease in the leaves, and early-maturing broccoli also shows initial signs of disease. The damage is spreading about two weeks earlier than usual years.
The signs of disease spread are analyzed to be due to hot and humid weather, with an average temperature last month 3.4 degrees higher than the average year and 20 days of rainfall, which is double the average year.
The Jeju Agricultural Technology Institute said that to prevent the spread of diseases, broccoli should not be planted densely and the surrounding drainage should be improved to ensure good water drainage. It also urged farmers to spray fungicides 2 to 3 times at intervals of 7 to 10 days if infection is detected early.
Diagnostic and control information for major broccoli diseases and pests can be found on the Jeju Agricultural Technology Institute website (https://agri.jeju.go.kr/agri/index.htm).
Black spot disease, caused by fungi, mainly occurs in overly moist and densely planted fields. It causes round or oval brown spots on the stems or leaf stalks, which gradually wither and die. If the flower buds are infected, black spots appear and, in severe cases, they rot, reducing marketability.
Black rot disease occurs when bacteria infect wounds caused by rain, wind, or insects. The tips of the leaves turn yellow, and in severe cases, the entire leaf turns brown.
koss@yna.co.kr
Original content
(Jeju=Yonhap News) Reporter Go Seong-sik = The Jeju Agricultural Technology Institute has urged active disease control as broccoli in Aewol-eup and Hallim-eup, the main production areas for winter vegetables, shows signs of spreading black spot and black rot. Early-maturing broccoli is experiencing black spot and black rot in the flower buds and leaves, respectively, and late-maturing broccoli is also showing initial signs of disease. The damage is spreading about two weeks earlier than usual. The signs of disease spread are analyzed to be due to hot and humid weather, with an average temperature last month 3.4 degrees higher than usual and 20 days of rainfall, which is double the average. The Jeju Agricultural Technology Institute said that to prevent the spread of diseases, broccoli should not be planted densely and the surrounding drainage should be improved to ensure good water drainage. It also urged farmers to spray fungicides 2 to 3 times at intervals of 7 to 10 days if ...
Source: Yna
Would you like more in-depth insights?
Gain access to detailed market analysis tailored to your business needs.
Related market data
What to read next
Read more relevant content
By clicking “Accept Cookies,” I agree to provide cookies for statistical and personalized preference purposes. To learn more about our cookies, please read our Privacy Policy.