Authors include Fatemeh Etemadi, Dr. Masoud Hashemi, Dr. Francis Mangan, and Dr. Sarah Weis. This guide can be found under the Research tab, in Agronomy Research Reports 2015. Further questions may be directed to Fatemeh Etemadi, fetemadi@psis.umass.edu or Dr. Hashemi, masoud@umass.edu.
http://ag.umass.edu/crops-dairy-livestock-equine/research/agronomy-resea...