Date of this Version
Citation Insect Science, Plant Disease, & Weed Science, University of Nebraska Cooperative Extension, Institute of Agriculture and Natural Resources 87(2) (March 13, 1987)
In This Issue:
-Weed Control Startegies for Winter Wheat
Don't Plow Alfalfa Sod- Spray It
Weed Control Strategies for Winter Wheat
Spring is rapidly approaching and winter wheat producers should be formulating plans for controlling weeds in winter wheat fields. Uncontrolled weeds compete with wheat for water, nutrients, light, and space, and can reduce yields dramatically. Research has shown that one tansy mustard plant per square foot can reduce wheat yields by 15%, while the same population of blue mustard plants can reduce yields by 30%. Pennycress has been a major problem for wheat growers in eastern and central Nebraska. Further, spring-germinating weeds can cause problems after wheat harvest in western Nebraska by using valuable soil water during the fallow period. Therefore, it is important to control weeds in growing wheat.
Don't Plow Alfalfa Sod - Spray It
Killing alfalfa with herbicides is more economical than plowing, is very effective, and leaves the soil less subject to erosion. An excellent seedbed results from herbicide-killed sod whether the crop is planted no-till or following light tillage. The most consistent treatment we have evaluated for alfalfa control is 1 qt. 2,4-D + 0.5 pt. Banvel/A with 2 qt. 2,4-D ester/A a close second. The herbicide approach will cost $5.00-$6.00/A + application compared to $10.00-$15.00 for plowing and seedbed preparation. Alfalfa should be actively growing and have at least 4" of green growth at treatment.