Pythium blight
central Thailand floods
Mostly About Floods, Some Disease, and Lots of Photos
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Since my last update I’ve seen a bit of the splendidly-named elephant’s footprint (Rhizoctonia cerealis) on Zoysia japonica at Japan, some Anguina pacificae nematode damage — the early symptoms of which look remarkably like...
Dollar spot-8
Light at the end of the tunnel (e.g., It's August)
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It’s been a busy week for golf course superintendents in the region as diseases are in high gear and the heat and temperature stress are causing many golf course putting greens to decline. We are hearing a lot of reports of yellowing and discoloration to bentgrass putting greens, possible nematode issues, and the typical diseases that we would expect to see at this time of the year. Rain storms that swept through much of the mid-Atlantic provided some much needed relief from the drought we were in, but in many cases the rain fell too fast and basically moved via...
Brown Patch-2
Dr. Vincelli's Chemical Control of Turfgrass Diseases
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Brown patch and Pythium blight are very active in the mid-Atlantic and northeastern US at the moment as would be expected. Anthracnose also appears to be making some inroads on annual bluegrass putting greens. A big decision has been whether to apply the DMI fungicide...
Heat Wave Forecasted for Next Week
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We have seen relatively few disease issues in the TDL the past month or so. Throughout Upper Midwest temperatures have been warm, but we have also been quite dry. However the forecast for next week is very different. Highs for next week will been in the low to mid-ninties, more importantly night time temperatures will exceed 72 for most of next week. I included a 7-day forecast from NBC 15 here in Madison, but areas west and south of us will likely experience even hotter temperatures. I know that doesn’t compare with the excruciating heat experienced by those in the...
Brown Patch-6
Turfgrass Diseases in India
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I spent this week in India and saw active dollar spot, fairy ring, probable bermudagrass decline, and also this unidentified disease on a bermudagrass green at Kolkata. I suspect this is pythium blight, due to the apparent streaks of disease moving downhill with the drainage pattern, and because of its occurrence on two greens that appeared to have saturated soil conditions. Upon consulting with the conductor of this website, the possibility that this may be a leaf spot disease was also raised. And as I consult my Compendium of Turfgrass Diseases, I see that the environmental conditions for pythium blight...
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