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Title: Glyphosate effects on plant mineral nutrition, crop rhizosphere microbiota, and plant disease in glyphosate-resistant crops

Author
item Duke, Stephen
item Lydon, John
item Koskinen, William
item Moorman, Thomas
item Chaney, Rufus
item HANMERSCHMIDT, RAYMOND - Michigan State University

Submitted to: Journal of Agricultural and Food Chemistry
Publication Type: Review Article
Publication Acceptance Date: 9/26/2012
Publication Date: 9/26/2012
Citation: Duke, S.O., Lydon, J., Koskinen, W.C., Moorman, T.B., Chaney, R.L., Hanmerschmidt, R. 2012. Glyphosate effects on plant mineral nutrition, crop rhizosphere microbiota, and plant disease in glyphosate-resistant crops. Journal of Agricultural and Food Chemistry. 60:10375-10397.

Interpretive Summary: Recently there have been recent claims that glyphosate-resistant (GR) crops sometimes have mineral deficiencies. Claimed deficiencies have been linked to alleged increases in plant disease in GR crops. This review evaluates the literature that is germane to these claims. The conclusions are: 1) although there is conflicting literature on the effects of glyphosate on mineral nutrition on GR crops, most of the literature indicates that this is not a significant problem; 2) most of the available data support the view that neither the GR transgenes nor glyphosate use in GR crops increases crop disease; and 3) yield data on GR crops do not support the hypotheses that there are substantive mineral nutrition or disease problems that are specific to GR crops.

Technical Abstract: There have been recent claims that glyphosate-resistant (GR) crops sometimes have mineral deficiencies. Claimed deficiencies, such as with Mn, have been linked to alleged increases in plant disease in GR crops. This review evaluates the literature that is germane to these claims. Our conclusions are: 1) although there is conflicting literature on the effects of glyphosate on mineral nutrition on GR crops, most of the literature indicates that this is not a significant problem; 2) most of the available data support the view that neither the GR transgenes nor glyphosate use in GR crops increases crop disease; and 3) yield data on GR crops do not support the hypotheses that there are substantive mineral nutrition or disease problems that are specific to GR crops.