Agronomy and Horticulture Department

 

Date of this Version

5-9-1989

Citation

Insect Science, Plant Disease, & Weed Science, University of Nebraska Cooperative Extension, Institute of Agriculture and Natural Resources 89(08) (May 9, 1989)

Comments

Copyright 1989 University of Nebraska

Abstract

In This Issue:

  • 1989 Weed Science Tour
  • Summer Hours
  • Buckbrush and Snowberry -- Control Time Is Now
  • Yellow Nutsedge Control in Turf

1989 Weed Science Tour

The itinerary has been set for the 1989 Weed Tour. This year the tour will progress from west to east across the state. The itinerary is as follows:

Summer Hours

Our summer office hours are from 7:30 a.m. to 4:30 p.m. We are often in the field at this time of year and you may get a more immediate response by contacting the extension agent in your county.

Buckbrush and Snowberry -- Control Time Is Now

Buckbrush and western snowberry development is advanced due to early season warm temperatures. Research shows there's a brief two-week period in May during which 2,4-D performs effectively for the control of these two woody plant species. Control time is now -- May 10 to 25 in eastern and southern Nebraska. Northward, initial treatment could be delayed until May 20. Apply 1 ½ quarts of low volatile 2,4-D ester (4 lbs active ingredient per" gallon) per acre in enough water to provide good coverage.

Yellow Nutsedge Control in Turf

Yellow nutsedge is one of the most troublesome weeds in turf. The warm temperatures in April have caused yellow nutsedge to come on earlier than normal this spring. Basagran is the safest and most effective herbicide for yellow nutsedge control and is now available in pint containers. Mix ¾ to 1 ½ oz. /gal of water along with an equal amount of surfactant or detergent and apply to vigorously growing plants. This will treat 1,000 square feet. If desired control is not obtained with the first application, make additional applications at 10 to 14 day intervals. OSMA, MSMA and other methyl arsenates can also be used for control, but repeat applications at 7 to 10 day intervals are also necessary. The organic arsenicals can discolor turf and should not be applied when temperatures are above 85 degrees. With either approach, don't mow for 4 to 5 days before and after application.



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