|Dr. Kevin W. Frank
Michigan State University
|Thanks for your continued support of the MSU Turf Team and the Michigan Turfgrass Foundation. As the summer heat ramps up, we continue preparation for the Michigan State Field Day on August. 14 at the Hancock Turfgrass Research Center. There will be morning research tours and afternoon diagnostic walks and tours. REGISTER now to ensure your spot.
Postemergence Crabgrass Control
The cool, wet start to the year seemingly changed over night with high temperatures and humidity arriving with a vengeance in late June and early July. Following the high temperatures, crabgrass is now surging in many turf areas.
Keep in mind that in contrast to our cool-season turfgrasses that have optimum growing temperatures of about 65-75 degrees Fahrenheit, crabgrass is a warm-season annual that will thrive in the high temperatures of 80-100 F. So as cool-season turf growth has slowed in the last several weeks, crabgrass is now exploding in growth. If post-emergence crabgrass control is in your plans, here’s a herbicide primer. Herbicides will be primarily referred to by their active ingredient.
There are two main options for post-emergence crabgrass control in cool-season turf: quinclorac (Drive XLR8) or fenoxaprop-ethyl (Acclaim Extra). Both products are effective for post-emergence control of crabgrass. However, there are also some key differences between these products (see table):
The entire article can be viewed at https://www.canr.msu.edu/news/crabgrass_control_during_a_hot_summer
Dr. Frank’s work is funded in part by MSU’s AgBioResearch.
This article was published by Michigan State University Extension. For more information, visit http://www.msue.msu.edu. To have a digest of information delivered straight to your email inbox, visit http://www.msue.msu.edu/newsletters. To contact an expert in your area, visit http://expert.msue.msu.edu, or call 888-MSUE4MI (888-678-3464).
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