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Veteran Advisor
Posts: 1,488
Registered: ‎10-18-2016
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Covering The Residual Gap

Saw an ISU presentation by Dr. Bob Hartzler in which he said there was a problem between when the pre-emergence residual wore out and when the post-ermergence could kick in.  

 

His solution was to reapply a pre-emergence with residual just before crop emergence.

 

His bottom line was the old days of hoping for a one-pass or maybe even a two-pass herbicide system were done.