Thus, it is easier at some times to justify spending money or expending effort to produce more forage or to improve harvesting efficiency than it is at others. A key to success is to plan a forage program that will provide adequate forage when forage value is high and cheap forage when forage value is low.
One must be flexible enough to take advantage of opportunities or to make changes when faced with challenges. 
From Forage-Livestock Quotes and Concepts, D.M. Ball, et. al
