Abstract
 Delineating Site-Specific Crop Management Units: Precision Agriculture Application in GIS Track: Agriculture Author(s): Dennis Corwin Crop yield is influenced by soil-related, anthropogenic, topographic, biological, and meteorological factors that are highly spatially variable. Because of the complex spatial interaction of these factors, GIS and other advanced information technologies (e.g., spatial statistics, remote sensing, crop-yield response models) are essential tools in precision agriculture. Site-specific management (SSM) refers to the application of precision agriculture to crop production. A fundamental aspect of SSM is the delineation of SSM units, which are spatial domains where soil properties can be managed similarly to optimize crop yield. In a study conducted by USDA-ARS scientists at the George E. Brown Jr. Salinity Laboratory, ArcView, electromagnetic induction, spatial statistics, and regression analysis were used to identify soil-related factors influencing crop (i.e., cotton) yield within an 80-acre field in California's San Joaquin Valley. The developed maps and crop-yield response model provided the essential information for site-specific crop management recommendations. Dennis Corwin USDA-ARS GEBJ Salinity Laboratory 450 West Big Springs Road Riverside , CA 92507-4617 US Phone: 951-369-4819 E-mail: dcorwin@ussl.ars.usda.gov |
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