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More On Manganese Deficiency, Glyphosate

A number of university extension have been commenting on a recent article in the March 2010 issue of No-Till Farmer titled, "Are We Shooting Ourselves In The Foot With A Silver Bullet?" that was published on pages 6 and 7.

This article featured comments based upon research and field observations by retired Purdue University plant pathologist Don Huber and Boone, Iowa, agronomist Bob Streit. They expressed concerns that the high use of glyphosate is leading to micronutrient deficiencies in soybeans that may be making them more vulnerable to disease and causing them to mature earlier, among other things.

The following are either links to university Web sites or pdf files that offer commentary from Extension agronomists about the subject. Since this article has appeared to arouse a chorus of debate, we thought you ought to have more opinions on the matter.

Iowa State University

Purdue University

Ohio State University

University of Minnesota

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plant health
Posted from: bob streit, 9/15/10 at 1:52 PM CDT
It is tough to say that we told you so. After starting harvest with very low corn and sb yields being reported, due to horendous levels of Anthracnose, Fusarium, Diplodia, Goss's ...etc problems in Corn. Add in the SDS, Septoria, Downey mildew, Cercospora, Rhhizoctonia ...etc in soybeans an astute and nonrecalcitrant grower and crop advior may have to reconsider doubting that there is a plant health:herbicide application connection. New answers need to be generated with full transparency to growers. A pertinent question is how much money did the Ag Depts at each of those univerities receive from the affected herbicide/genetic companies. ??? Is anyone else curious? Are you getting record yields?

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