Replanting Failed Corn Stands – Herbicide Considerations

 

Replanting a corn field due to weather-related stand problems usually involves killing the first planting, which otherwise really just turns into a weed.  A recent article by Dr. Aaron Hager in the U. of Illinois newsletter, “The Bulletin – pest management and crop development information for Illinois”, summarizes this and other herbicide issues for corn replant situations  

 

http://bulletin.ipm.illinois.edu/?p=3874

  

 

Bottom line – the only methods to ensure complete control of the first stand of glyphosate-resistant corn are tillage or application of Select Max.  Use of Select Max must be followed by a wait of six days before replanting corn, to avoid risk of herbicide injury.  Gramoxone and glufosinate (assuming it’s not LibertyLink corn) can have substantial activity on the first stand of corn, but usually do not completely control it.  These herbicides are most effective when applied with atrazine or metribuzin, and also when corn is tall enough that the growing point is out of the ground. 

 

Video: What’s at Stake in Every Slice | On The Brink: Episode 7

Six hundred Canadian farms grow grain for Warburton's under custom contract — and that partnership exists because of Canadian plant breeding. Now the man responsible for maintaining it is sounding the alarm.

Adam Dyck is the program manager for Warburton's Canada, a company that produces over two million loaves of bread a day for more than 20,000 retail locations across the UK. He's watched Canadian wheat deliver thirty years of yield gains and quality advancements that make it worth sourcing at scale — and shipping across the Atlantic. But he's also watching the investment conditions that produced those gains come under pressure. Dyck makes the case for a new funding mechanism that brings both public and private dollars into wheat breeding before Canada's competitive window starts to close.