| identifying and quantifying phakopsora pachyrhizi spores in rain. | in summers of 2005 and 2006, rain was collected weekly at over 100 selected national atmospheric deposition program/national trends network sites across the soybean-growing region of the central and eastern united states. rain samples were screened for phakopsora pachyrhizi (causal agent of soybean rust) dna using a nested real-time polymerase chain reaction assay. over this time frame, p. pachyrhizi spores were detected in every state in the study, but more frequently in states along the gulf a ... | 2009 | 19271973 |