Virginia TechBender, D. A.Kline, D. EarlMcCarl, Bruce A.2014-05-302014-05-301990Bender, D. A.; Kline, D. E.; McCarl, B. A., "Postoptimal linear programming analysis of farm machinery," Transactions of the ASABE. 33 (1): 0015-0020. (doi: 10.13031/2013.31286) @19902151-0032http://hdl.handle.net/10919/48223Linear programming (LP) is a widely used technique for farm machinery selection. Shadow prices from LP models are typically used to identify farm machinery bottlenecks. Shadow prices represent the value of an additional unit of a scarce resource, such as planter hours during a given time period. This shadow price approach can be misleading since a machinery change may affect the usages of other scarce resources, such as tractors and labor. A postoptimality algorithm is presented which improves on the shadow price approach. This algorithm gives detailed information on the effects of a machinery change on all relevant tractor and labor resources. This information is useful for investigating complex machinery interactions. The postoptimality algorithm is illustrated with a case study in Texas.en-USIn Copyrightagricultural engineeringArticle - Refereedhttp://elibrary.asabe.org/abstract.asp?aid=31286&t=3&dabs=Y&redir=&redirType=https://doi.org/10.13031/2013.31286