Leaf spot caused by Bipolaris spp is considered a warm weather disease. Melting-out caused by Drechslera spp is considered a cool weather disease. Both diseases have 2 similar stages that begin at the leaf level and finishes at the crown and root level with both diseases having similar symptoms. Small, dark purple to black spots on leaf blades with centers turning tan as spots emlarge. As the diseases moves down to the crown and roots, turf appears straw coloured and severe thinning of turfgrass stand can occur.
Annual bluegrass, Kentucky bluegrass
Leaf spot is confined to the leaf blade level during cool weather <21C, but will infect crowns and roots during hot, humid weather over 30C.
Both stages of Melting-Out occur early in the spring and turf recovers when temperature reaches 21C.
Aug8WedAugust 8, 2018
Brian Rosenberg has been named the new Head of Bayer Environmental Science Canada effective August 1, 2018.
May15TueMay 15, 2018
May11FriMay 11, 2018
The premier educational and networking event for golf course superintendents will accept 50 elite members for its 2018 class
May10ThuMay 10, 2018
Bayer is pleased to announce the appointment of Jon Albert as Territory Sales Manager Technical for the Canadian Golf Market. Jon will be responsible for providing technical information and support to golf courses in Eastern Ontario and the province of Quebec.