Using Soil Moisture and Spatial Yield Patterns to Identify Subsurface Flow Pathways.

Presents a study on the use of soil moisture and spatial yield patterns to identify subsurface flow pathways. Importance of understanding factors that control differences in crop growth across an agricultural field for the development of effective management strategy; Report that discrete subsurface flow pathways were critical in understanding the impact of soil and climate on within field variability of corn grain yields; Decrease of corn grain yields during a drought with increasing distance from subsurface flow pathways; Suggestion by the research that knowledge of the subsurface hydrology may be critical to effectively manage corn grain production.