After two separate herbicide applications, the Bentgrass on #2 is showing the results we want!
This post is a continuation from yesterday's post about the effectiveness of herbicides; specifically the removal of Creeping Bentgrass growing in Kentucky Bluegrass/Tall Fescue roughs. This was taken on #2 between the approach and the pond. You can see the Bentgrass is being impacted much harder compared to that on #1. As a Superintendent, I'm always trying to figure why things like this occur. This application was made to this area within 10 minutes of #1 being treated. The spray applications were made on the exact same days as well. This is an example of how the work we do can come with mixed results and much of it can be beyond our control. Regardless, the results above are outstanding.
As I think about this, the unknowns that I ask myself are: What variety of Bentgrass is this compared to #1? Perhaps its a different variety that is more sensitive to Tenacity herbicide? What is the age of the Bentgrass? Could it be that younger plants (or older plants) are more sensitive to the herbicide? Could it be the growing environment? On #2, this is a well drained area on the side of a slope compared to #1, which is flat and stays slightly damper. Could it be the difference in the amount of sunlight each area receives? I could go on and on like this and probably will at a time I should be asleep! Again, this proves there is a lot we don't understand about the effectiveness of different products and why some pests of the same species are impacted more than others. The same could be said for people and diseases.