large patch
botanizing_beijing
Hong Kong Clouds and Beijing Botanizing
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The seminar was at Clearwater Bay, a course with manilagrass tees, fairways, and roughs. We saw a little bit of dollar spot and heard from superintendent Darry Koster about his preventative fungicide program for large patch (caused by Rhizoctonia solani). It gets just cold enough at Hong Kong for large patch to be a problem on ...
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Early early early
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The temps have been warmer than normal, in some cases WAY warmer. Here in Manhattan it was 89 on April 1. Even the warm-season grasses are growing like mad. Along with the early plant growth, plant diseases are...
Yellow and Dollar
Some Much-Needed Rain and Some Unwanted Diseases
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In Oklahoma and the Southern Plains, we received some much-needed rain to help offset the drought that has persisted over the last year or so. Some areas of Oklahoma received as much as six inches of rain over the last 10 days. Many have welcomed this, but it did cause...
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Spring dead spot and large patch on my mind
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We have been busily working on getting our fall spring dead spot and large patch preventative fungicide trials deployed here in Stillwater. In Oklahoma we like to initiate fall, preventative fungicide applications prior to the soil temperature falling back down to ...
Yellow tuft on Penncross creeping bentgrass at Hokkaido
Yellow Tuft and Large Patch in Japan
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Precipitation across much of Japan has been above average this year, and it is no surprise then to be seeing two diseases that are associated with wet growing conditions: large patch (Rhizoctonia solani) and yellow tuft (Sclerophthora macrospora). I've seen ...
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How to kill your zoysiagrass
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Earlier this week I inoculated some zoysiagrass for large patch studies. Curious how we do it? First, grow the fungus in ...
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Controlling Large Patch of Zoysiagrass in Oklahoma
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As I promised in my regional update last week, I wanted to present some information on controlling large patch of Zoysiagrass in Northern Oklahoma. I’m going to present some data from two fungicide evaluations that examined the efficacy of various products and also ...
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Rain in Oklahoma? You Don’t say…
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Like Megan, I’m going to give the new blog format a test drive with this post.  I also want to make some comments about what is happening in the South-central U.S. As you can see by the title, it appears that it might actually rain.  Check out the beautiful screen shot taken from the Oklahoma Mesonet this morning for the Stillwater area.  Simply marvelous!  We were hot yesterday and will be again today, but that forecast sure looks like relief to me. With that said, be sure you have a good preventative fungicide down.  We are likely going to get...
Zebra patch
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Hi, I don’t have a lot of news, but I wanted to share these very cool photos that were sent by Darin Pearson at Eagle Bend Golf Course in Lawrence. The course is stripping zoysia into rye, and you can see how the large patch is expressed in the susceptible turf (zoysia) while leaving the rye seemingly untouched. Starting tomorrow I’m off to Tajikistan for about 10 days. I wonder how the turf world will change while I’m gone. It could be cool and rainy, hot and dry, hot and sticky… we’ll see. It’s always interesting to see how quickly...
Stormy skies
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The major news around here this week has been the weather. No, that’s not a photo of the Mother Ship come to take me home, that’s the back of one of the many storm fronts that passed through this past week. I’m sure you have all heard about the devastating tornado in Joplin. Other communities in the region were also struck. Along with the violent winds, hail, etc, abundant rain has accompanied some of the storms. The University of Arkansas talks about wet conditions in their area. They also shared some images of flooding from some storms a few weeks...
Spring dead spot of zoysiagrass
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Spring dead spot of bermudagrass After a cold winter throughout much of the Southeast, damage from spring dead spot is particularly severe on bermudagrass. Scenes like this one are all too common when visiting golf courses in North Carolina right now. We’re also seeing an unusually high number of spring dead spot outbreaks on zoysiagrasses across the southeastern US. Samples, photos, and reports of spring dead spot on zoysiagrass fairways, tees, lawns, and landscapes have been rolling in all spring. Spring dead spot of zoysiagrass? Yes, this is not a new thing. Spring dead spot was first documented in zoysiagrass by...
Why They Call it the Transition Zone
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Spring dead spot of bermudagrass As the old joke goes, “In the transition zone, we can grow all of the turfgrasses, we just can’t grow any of them well”. The last year has been an excellent demonstration of this fact. Spring 2010 brought major problems with winter-kill in the warm-season grasses across much of the southeast. Everyone will remember the summer of 2010 as the year when record heat caused widespread failure of creeping bentgrass putting greens.  Large patch of bermudagrass The spring of 2011 hasn’t been much kinder. Spring dead spot is particularly severe on bermudagrass this spring, and...
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