Helminthosporium Pays Us A Visit Again

Leaf Spot by Eric von Hofen
Almost over night we see the results of Helminthosporium on our TifEagle greens. This is the first time in a year we have seen any signs from our little friend here in Miami. I wrote a similar post on this disease almost a year ago to date. Last year we had record cold temps that brought on the signs of the disease. This year we have had a month of well above temps with light rains that have kept the soil around 80 degrees. This was just enough to increase the pressure of the disease and for us to see the damage. I have started a program of applying fungicides on a 14 to 21 day rotation. I will use Fore, Insigna and Daconil for control and prevention of the leaf spot this winter. It has been 16 days since my last fungicide application so I’m not surprised to see the spots pop up. I spray my greens every friday with a light Harrells fertilizer package so adding fungicides will be easy to do. I will keep you updated this winter on the progress on the control of Helminthosporium. I see a connection between the amount of sun, rain fall and soil temps when the Helminthosporium shows up. Let me know what your seeing on your golf course.

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Helminthosporium on TifEagle Bermudagrass Greens

eric von hofen
Almost over night we see the results of Helminthosporium on our TifEagle greens. This is the first time this year we have seen any signs from our little friend. We have had two weeks of well below temps that have taken the soil below 50 degrees. This was just enough to increase the pressure of the disease and for us to see the damage. One good thing is that we have had full sun and no rain. This will help bring the soil temps back up above 58 degrees and start growing turf again. I plan on starting a program of applying fungicides on a 14 to 21 day rotation. I will use Heritage, Insigna and Daconil for control and prevention of the leaf spot this winter. It has been 32 days since my last fungicide application so I’m not surprised to see the spots pop up. I spray my greens every friday with a light fertilizer package so adding fungicides will be easy to do. I will keep you updated this winter on the progress on the control of helminthosporium.
Eric von Hofen

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