|Golf Tees show the Fusarium Patches on the Control Plot|
(never rolled ever)
I hypothesize that the reason rolling is having an effect on fusarium is the same reason that rolling has an effect on Dollar Spot. Researches are working to see if it is the increased microbial populations in soils that are rolled that are having an effect on the fusarium patch fungus. I also agree with Dr. Vargas and Paul Giordano's research with respect to dew removal. In my experience we rarely have dew on this turf during periods of high fusarium pressure due to constant rain.
|This plot is rolled 1x/day. The cluster of disease suggests|
that the disease could be spread by a mower from a nearby
control plot located to the top right of this plot.
This is a pretty cool discovery but I do not recommend that everyone go out and start rolling like that fool in Pender Harbour. What I do recommend is that you set aside a small part of your nursery or practice green and do a test for yourself. Leave a spot untreated with pesticides and try a few different rolling frequencies to see if it has an effect on your site. I would recommend you start with rolling frequencies of 1, 2, and 3 times daily.
|This plot is rolled 4x daily|
What really excites me about this discovery is the potential it holds. Fusarium is my biggest threat and the only pest that I cannot control at my location without pesticides. The only respite West Coast turf managers get from this pest is the summer heat and dry weather. I am seeing these results in spring during cool wet conditions on a putting green grown in almost complete shade (2 hours of sun per day tops). If fusarium patch can be controlled in cool wet conditions culturally this could be big. Cultural control independent of the weather. If anything this could mean that turf managers could have another tool in their toolbox for fighting or preventing Microdochium nivale in putting green turf.
|Tru-Turf should really sponsor me. This machine kicks ass!|
|Poa annua rolled 8x daily with a HOC of 0.090" during full seed head flush with only 2 hrs of sunlight/day. Whoa!|
do you see what I see? Where's the seedhead? Oh snap!