 and when all those three things are there that's when we can have a disease problem show up he tells brownfield the pathogen is what causes the disease a microorganism you know could be a fungus that's out there and that's what the pathogen is it's present there in the field you know sometimes people do some tillage or rotating or things like that so it really doesn't impact what's out there but that pathogen has to be present and then the environmental conditions