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Thoughts for the week

6/29/2014

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Here is a couple of quick notes on field observations:

Bean fields are starting to show some weeds.  Surprisingly, I am seeing more grass than in the past but generally it is the same list of weeds that is expected.  The bean pre herbicides should start to peter out so this observation is not unexpected.  Now that fields are drying and some spraying can go on, remember if you have not had the chance to spray for volunteer corn, the rate of whatever product you have been using will probably not be enough.  Generally your vol. corn recommendation is for corn that is less than 12 inches tall and the rate needed to control corn above 12 inches is higher than what is normally talked about.  Also, expect your vol corn product to work slower on this taller corn.

Corn fields are for the most part, clean.

Corn fields, as you have noticed, are not the right color.  This is due to the excess rain, but not necessarily due to loss of N as corn will show symptoms similar to N loss in saturated soils.  Here are a couple of good articles that discusses this: http://cornandsoybeandigest.com/fertilizer/estimate-nitrogen-losses-wet-corn-fields?NL=SO-09&Issue=SO-09_20140628_SO-09_749&YM_RID=dhgatchell@gmail.com&YM_MID=1473471&sfvc4enews=42&cl=article_2_b and http://www.extension.iastate.edu/CropNews/2014/0617sawyer.htm.

This week there needs to be some discussion on what can be salvaged from the corn fields in regards to supplemental N applications.

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