Lonoke County
 Agriculture
Podcast
March 3, 2008
Horseweed Burndown in Soybeans (1:11 minutes)
Audio/Video Script:
Susan Scott
County Extension Agent - Agriculture
Starting off with a good burn-down program in soybeans is a must these days.
I'm Susan Scott with the University of Arkansas, Division of Agriculture.
Glyphosate resistant horseweed has now been identified in almost every delta
county in Arkansas. Since there are few good herbicide options in crop,
horseweed must be controlled at burn down.
8 oz/A of dicamba herbicide tank-mixed with glyphosate is the best choice for
control of horseweed. The second option is to use 1 quart of 2,4-D per acre.
This tank-mix is also effective on cutleaf eveningprimrose and other tough
broadleaf weeds. Remember, however, 2,4-D can easily contaminate sprayers.
You may want to consider adding a residual herbicide to control horseweed
that germinates after the burndown has been applied.
Dicamba and 2,4-D have a 14 day plant back interval following 1 inch of rain.
So, the way the plant-back interval works is you spray your burn-down then wait
until you get a rain, then start counting.
Application volumes of 10 gallons per acre by ground, proper speed, boom
height and tip selection will make sure that as much spray intercepts the
horseweed plant as possible. Remember to “Keep it in the Field”.
For more information about burn down programs contact the Lonoke County
Extension Office.
Back to
Agriculture Podcasts
|
