The EPA is registering the herbicide Enlist Duo with first-time-ever restrictions to manage the problem of resistant weeds.

For wheat growers, it's a truism: Plant varieties that are resistant to prevalent diseases. But what if the wheat plant has to pay a price for resistance, possibly reducing its yield? Is the resistance worth it?

University of Nebraska-Lincoln greenhouse studies have confirmed a Palmer amaranth population resistant to postemergence application of atrazine and HPPD-inhibiting herbicides (Callisto, Laudis, Armezon/Impact). This is the second report (after Kansas) of a Palmer amaranth population resistant to atrazine and the HPPD group of herbicides.

Even as crops resistant to 2,4-D herbicide are being developed, populations of weeds are also developing a resistance, says the journal Weed Science.

A waterhemp population from southeast Nebraska has been confirmed to be resistant to 2,4-D, but the resistant population is believed to be limited to a few fields.

Between this year’s harvest and next spring’s planting, winter annual weeds can take over fields, but a fall burndown application can knock down weeds and set up growers for a strong 2011 crop

It’s that time of year to sample fields for soybean cyst nematode, and new Ohio State University research is indicating that soybean producers may need to double up their efforts to analyze soil for eggs.