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Transactions of the ASAE
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.
American Society of Agricultural and Biological Engineers
Kanwar, Rameshwar S.; Johnson, H. P.; Schult, D.; Fenton, Thomas E.; and Hickman, R. D., "Drainage Needs and Returns in North-Central Iowa" (1983). Agricultural and Biosystems Engineering Publications. 507.
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