Irrigation and Drainage

Oral

397887 - Yield benefits of drainage water recycling in Iowa and Indiana

Wednesday, June 6
2:00 PM - 3:30 PM
Location: Skyway Room
Co-Authors: Ben Reinhart, West Lafayette, IN – Purdue University; Jane Frankenberger, West Lafayette, IN – Purdue University; Matthew Helmers, Ames, IA – Iowa State University; Laura Bowling, West Lafayette, IN – Purdue University

Drainage water recycling captures subsurface drainage water in a storage reservoir for use as supplemental irrigation water during periods of water deficit. This practice is gaining increased attention in the Midwest as a way to both increase agricultural production and minimize offsite nutrient losses. However, quantification of production benefits of drainage water recycling for Midwest agriculture is limited. Increased understanding of the yield impacts of drainage water recycling will better inform decision making of agricultural producers considering adopting this practice. The objective of this study is to quantify potential yield benefits of drainage water recycling for maize production for a range of storage reservoir sizes for sites in Iowa and Indiana. Measured drain flow from research plots is being used to quantify the potential supply of subsurface drainage water, and a recently developed Drainage Water Recycling Evaluation Tool is being used to quantify the volume of water that can be stored for a range of reservoir sizes. The Hybrid-Maize crop model is then being used to estimate yield impacts of supplemental irrigation based on crop water demands and water supply. Results will be presented on the potential water supply for a range of reservoir sizes, crop water demands, and potential yield impacts of supplemental irrigation from drainage water recycling for example sites in Iowa and Indiana. A better understanding of the relationships among drainage water supply, reservoir size, and yield impacts of irrigation is important because it will help determine the feasibility and design requirements of drainage water recycling systems.

Christopher Hay


Iowa Soybean Association

Presentation(s):

Send Email for Christopher Hay


Assets

397887 - Yield benefits of drainage water recycling in Iowa and Indiana



Attendees who have favorited this

Please enter your access key

The asset you are trying to access is locked. Please enter your access key to unlock.

Send Email for Yield benefits of drainage water recycling in Iowa and Indiana