Tom Isakeit
Tom Isakeit
across brought carried currents earth eventually hours leaf needed order rust several thousands wet wind
Rust spores can be carried by wind currents hundreds or even thousands of miles, even across oceans. They are eventually brought down to earth by rain, and a leaf that's been wet for several hours is needed in order for a spore to germinate and infect a plant.
far finding north points possibly rust south texas
This finding in South Texas is probably a new introduction. And what it suggests is that soybean rust could take the so-called 'rust corridor' to points possibly as far north as Canada.
happened infected infection plants showing unless visit
Infection must have happened after my visit in December, unless plants were already infected but were not yet showing symptoms.