Rosmann Weed Management Trials

Ron and Maria Rosmann, in Harlan, Iowa, carried out a trial for four years over two decades examining the effect of tillage system on yield and weeds in soybeans when herbicides are not used. A difference in broadleafed weeds as much as ten-fold gave the Rosmanns clear information about which practice best fit their cropping system.  Their study confirms that where herbicides are not use, the potential for most weeds is higher in conventional tillage than in ridge tillage.

For a broader discussion of weed management in ridge tillage, click here.