Consumer demand for organic milk recently surpassed the available supply, with sales of organic products reaching $35 billion in 2014 and continuing to rise. As farms transition to organic production to meet demand, feeding strategies will need to be adapted to meet USDA National Organic Program requirements. Currently, agriculture accounts for approximately 9% of total US greenhouse gas (GHG) emissions; the US dairy industry has committed to a 25% reduction of GHG by 2020 relative to 2009. By varying diet formulation and the associated crop production to supply the diet, farmers can affect the quantity of GHG emissions of various feeding systems. Therefore, researchers from the University of Wisconsin-Madison created a study to compare the effects of feeding strategies and the associated crop hectares on GHG emissions of Wisconsin certified organic dairy farms.