It takes knowledge to make a place for yourself in the fast changing, highly competitive farm business of today. Agriculture changes fast. A few examples point this up - minimum tillage for corn, linear programming of dairy farming, and new plant growth regulators.
Mitchell, Roger L.; Bruene, Roger J.; and Patrick, Neil A.
"The Winter Quarter Program: A Short Course for Young Farmers,"
Iowa Farm Science: Vol. 19
, Article 6.
Available at: https://lib.dr.iastate.edu/farmscience/vol19/iss11/6