Mandan News

100th birthday party

By Jackie Buckley
NDSU Extension Agent

Dates to Remember
May 8 – Morton County SCD Meeting, 9:30 a.m. NRCS Office
May 8 – NDSU Extension Service Morton County Open House, 2 p.m. Morton County Commissioners Room
May 13 – Morton County 4-H Council Meeting, Morton County Fairgrounds, New Salem, 7:30 p.m.
May 15 – Morton County Fairboard, Morton County Fairgrounds, New Salem, 8 p.m.

100th Birthday Party Thursday, May 8, 2014
You are invited to join the Morton County Extension staff to celebrate the 100th Anniversary of the Cooperative Extension Service. Officially, it is the official signing date of the Smith Lever Act. Join us for an open house from 2-4 p.m. on May 8. To find out more information about the 100 year celebration and facts please refer to our Facebook page at www.facebook.com/NDSUExtension or the NDSU Extension website at: www.ag.ndsu.edu/extension/extension-100-years/extension-100-years.

Control Crabgrass in Your Lawn
Soil temperature are still very cool. There is still time to make an application of crabgrass killer to your lawn. Once soil temperatures warm up to 50 degrees Fahrenheit the crabgrass seeds will begin to germinate and a pre-emergent application should be made. Use Acclaim, Dimension, or products that contain DSMA, Dacthal, Betasan, Balan, Pendimethalin, or Tupersan. As of Monday, May 5, the soil temperature under turf at the Mandan ARS Station was 38 degrees.

To be effective, pre-emergent herbicides must be in place before germination occurs. Pre-emergence treatments are preferred because they are generally more effective for crabgrass control and less injurious to the turfgrass that post-emergence treatments. In general, pre-emergence herbicides should be applied before soil temperatures reach 50 to 55 degrees Fahrenheit. This will allow the pre-emergent herbicide to form a barrier before the crabgrass seedlings emerge. Pre-emergence herbicides work by inhibiting the growth of young seedlings. These products do not eliminate established plants and must be applied before germination begins. Applications made very early in the spring have potential to break down before the end of the germination window and are, for the most part, not recommended. This is a particular problem in the three out of 10 years when late-season conditions are conducive for a second germination flush. Delaying pre-emergence applications in a very cool or dry spring would provide better season-long control because crabgrass germination is also delayed under these situations. Nearly all of the commercially available pre-emergence herbicides are very effective when applied properly. As always, read and follow label instructions when making herbicide applications.

The above mentioned herbicides will also control other annual grasses if made at the correct time.