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Iowa State University

Agriculture and Environment Extension Publications

Weed Science

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2013 Herbicide Guide For Iowa Corn And Soybean Production, Micheal D. K. Owen Dec 2013

2013 Herbicide Guide For Iowa Corn And Soybean Production, Micheal D. K. Owen

Agriculture and Environment Extension Publications

The success of weed management programs, more specifically herbicide programs, varied considerably during 2012 reflecting the importance of environmental conditions on herbicide performance. Variability of success was seen not only in the postemergence herbicide applications that continue to dominate herbicide use but also in the soil-applied residual herbicides; all herbicide applications were strongly influenced by tillage system, crop planting date, timing and amount of rainfall, and resulting weed emergence timing. While more soil-applied herbicides were used in Iowa during 2012, there are still too many acres of corn and soybean that are treated only with glyphosate. Importantly, the trend of ...


Selecting The Correct Nozzle To Reduce Spray Drift, Brent A. Pringnitz, H. Mark Hanna, Jim Ellerhoff Jul 2001

Selecting The Correct Nozzle To Reduce Spray Drift, Brent A. Pringnitz, H. Mark Hanna, Jim Ellerhoff

Agriculture and Environment Extension Publications

Nozzle selection is the most important factor in reducing pesticide drift. Get details here on matching your application needs to the nozzle best suited to the situation.


Weed Emergence Sequences: Knowledge To Guide Scouting And Control, Iowa State University Extension And Outreach Jan 2000

Weed Emergence Sequences: Knowledge To Guide Scouting And Control, Iowa State University Extension And Outreach

Agriculture and Environment Extension Publications

This poster provides information on when weeds begin to emerge in order to help determine the appropriate time to scout fields and implement control tactics.