Spurred by late spring and early summer rainfall, farmers’ row crops across much of Kansas are thriving. And so are the weeds they’re trying to control, including Palmer amaranth, an aggressive and invasive weed that used to be controlled by the popular herbicide glyphosate.
A journal article published recently (July 2014) confirms that rotation resistant and rotation susceptible western corn rootworms are affected by Bt root tissue in a similar fashion.
The heavy rains across Iowa have made timely postemergence weed control difficult, even in fields treated with preemergence herbicides. This leads to questions as to what can be done to insure control of weeds larger than specified on herbicide labels.
Screening waterhemp for herbicide resistance (06/26/14)
Update on herbicide resistance in waterhemp (05/11/12)
Soil an overlooked resource (04/18/11)
Afternoon Comments 07/24
Corn futures dipped on China talk Thursday. Corn futures followed soybeans higher Wednesday night and seemed likely to keep rising after the weekly Export Sales report stated the new-crop result far above expectations. However, rumors that China will insist that U.S. DDGs shipped to that country be certified free of an unapproved GMO trait apparently undercut the market. September corn settled 1.0 cent lower at $3.615/bushel late Thursday, while December sagged 1.25 cents to $3.695.