Glyphosate applications in RR soy increase soil pathogen level
 

http://www.gene.ch/genet/2001/Jan/msg00016.html

The US study on increased levels of fusarium as a result of glyphosate
applications may be particularly important, however, as most Roundup
Ready
soy varieties are susceptible to the disease 'Sudden Death Syndrome'
caused
by Fusarium solani f. sp. glycines
(http://www.mosoy.org/dec97/soydoc.htm).
RR soy varieties with the best resistance to SDS (which has caused
some
heavy crop losses in recent years) may be only average compared to the
most
resistant conventional varieties (see: http://ipm.missouri.edu/ipcm/
archives/v8n22/ipmltr3.htm).