The the problem is one of getting top returns from the entire farm. This article furnishes guideposts to types of shifts among enterprises that influence returns as your resources and other farm conditions vary.
Howell, H. B. and Loftsgard, Laurel D.
"Planning for Top Farm Profits,"
Iowa Farm Science: Vol. 11
, Article 7.
Available at: https://lib.dr.iastate.edu/farmscience/vol11/iss11/7