Drainage Needs and Returns in North-Central Iowa
Current status of drainage and estimated drainage needs of the soils in the Des Moines River basin as indicated from an extensive survey are presented. A high percentage of the area has the potential for receiving benefits by improving county mains and on-the-farm drainage. Analyses have been made of the economic potential for drainage improvements by comparing three drainage input levels. Benefit-cost ratios indicate drainage of very poorly drained and poorly drained soils is a good investment for corn and soybean production.
This article is from Transactions of the ASAE 26 (1983): 457–464, doi:10.13031/2013.33958. Posted with permission.