Here is the new Xtendimax label as approved by the EPA. https://www3.epa.gov/pesticides/chem_search/ppls/000524-00617-20171012.pdf Here is the new list of approved Xtendimax
Here is a good article to help figure the amount of nutrients removed when baling corn stalks. https://cropwatch.unl.edu/2017/corn-stover-removal-nutrient-value-stover-and-impacts-soil-properties
Here is a link to the new application requirements for Xtendimax w Vaporgrip. https://www.roundupreadyxtend.com/stay-informed/Pages/news.aspx https://agcrops.osu.edu/newsletter/corn-newsletter/2016-38/xtendimax-label-xtend-soybeans
Here is a link to the latest documents on crop production, along with an archive list for reference. https://store.extension.iastate.edu/ProductList?Keyword=aep%200302