“…For example, economists continue to consider how farm subsidies affect input markets, including prices of variable farm inputs and other inputs that may be quasi-fixed, such as human capital, R&D embodied in new seeds, and land (see, e.g., Kirwan 2009;Alston 2007). Supply response in the context of farm subsidy programs remains important, and new models and estimates are emerging on how complex programs, including those with indirect production incentives, affect planted acreage and output (see, e.g., McDonald and Sumner 2003;Goodwin and Mishra 2006;McIntosh,Shogren,and Dohlman 2007).…”