My bad. I don't farm anymore, and am out of date. 2009 they changed the rules. Previously you could use Arsenic in Organic farming. http://www.epa.gov/oppsrrd1

My bad. I don't farm anymore, and am out of date. 2009 they changed the rules. Previously you could use Arsenic in Organic farming. http://www.epa.gov/oppsrrd1/reregistration/organic_arsenicals_fs.html http://www.epa.gov/oppsrrd1/reregistration/organic_arsenical...