The Ohio State University

Home TurfNotes Even though this has been a relatively moderate season to grow grass (low levels of disease) during the last week a wide range of samples and calls have been received with diseases active. In some areas warmer temperatures, varying amounts of rainfall and high humidity have resulted in building disease pressure. The follow is a list of what we have seen and a few comments.

Low cut turfgrass (greens)

Anthracnose - both basal rot anthracnose and foliar anthracnose have been on Poa annua, in greens.

Leaf spot on creeping bentgrass - has been found on both old greens 'L-93' and newly seeded greens 'Penncross'.

Brown patch - started the last few days. Watch for if temperature rise and there are wet humid conditions.

Dollar spot - this morning the turf at the OTF Facility looked like snow. With moderate conditions this disease is wide spread. A number of courses are reporting breaks in control on fairways.

Yellow tuft - this rather strange disease on creeping bentgrass is showing up on greens especially in wet sites. Remember this is a water mold and a pythium material needs to be used preventatively to avoid the disease.

Fairy ring - wide spread on greens, fairways and roughs.

Posted by Joseph Rimelspach