farm, farm management, crop yields, costs, agriculture economics department
Cooperative Extension Service, South Dakota State College of Agriculture and Mechanic Arts
Many factors affect the profits from raising crops. Some of these factors such as hail, blight, scab, drought, excessive moisture, hot winds, etc., are beyond the control of human beings. Other factors like preparation of the soil, kind and purity of seed, date of seeding, etc., may be controlled to a large extent. Without doubt the two most important factors aside from the price received, are the yield per acre and the cost per acre.
McCollough, H. D., "How Crop Yields and Acre Costs Affect Profits" (1923). SDSU Extension Circulars. 168.