Glyphosate Yellow Flash
Kevin Ganoe, Area Field Crop Specialist
Central New York Dairy and Field Crops
July 21, 2014
For a very good presentation in PDF form on glyphosate, micronutrients and adjuvants by Mark Bernards, with the University of Nebraska-Lincoln when the presentation was developed and now with the Western Illinois University. Dr. Bernards does an excellent job explaining how yellow flash is related to higher than normal rates of glyphosate and growing conditions not the glyphosate induced manganese (Mn) deficiency that has been suggested. His summary of available research suggests that glyphosate can not be shown to cause Mn deficiency consistently and that an Mn response is more likely caused by a natural lack of available Mn.
A Potpourri of Glyphosate, Micronutrients, and Adjuvants (pdf; 4101KB)
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