Golf Hot Foliage

Copper spot

Start Previous Forward Stop

Slideshow image

Gloeocercospora sorghi

Hosts

Creeping bentgrass

Disease Description:

Copper spot occurs in warm, wet weather on golf putting greens, often in association with and mistaken for dollar spot outbreaks. The disease occurs in small, scattered, roughly round patches 1 to 3 inches in diameter that are salmon- or copper-colored. Although similar, copper spot can be distinguished from dollar spot by a darker spot color (dollar spot is normally more bleached) and a more diffuse appearance to spot margins.

Control:

Most fungicides that control dollar spot and other diseases will also control copper spot, making its occurrence rare. When copper spot is active, limit use of water-soluble nitrogen sources and avoid mowing wet turf to decrease the spread of pathogen spores.

Icon description