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1. Why an EC map and how does it work?
 Veris EC Mapping System
EC has been proven to be correlated with soil texture, the relative components of clay, silt, and sand. Clay soil has greater EC readings than sandy soil. Soil texture is directly related to both water holding capacity and cation exchange capacity—key soil properties influencing productivity. Veris soil EC provides much more than just a snapshot of the soil surface—the electrical arrays investigate deep into the rooting zone. Soil EC is a powerful tool in agriculture because the properties that influence EC readings also impact many phases of crop production. As shown below, it’s no accident that the patterns on yield maps show up on EC maps.
 Veris EC Map  Cotton Yield in 2005
2. Why choose South Plains Precision Ag?
South Plains Precision Ag, Inc. owns a Veris EC 3100 Mapping system and can map your farms as needed. We have highly trained staff and the most advanced software packages to analyze your field EC maps. More importantly, we are able to give you specific instructions on how to use these maps for applying fertilizers and other crop inputs in a site-specific manner.
As you choose your provider for these services, be careful that you get advice from an independent source. SPPA does not sell chemicals or crop aids and can therefore make recommendations based on an unbiased interpretation of the data.
3. How about the cost?
Ø Complete Soil Mapping Package - Includes soil mapping with the Veris Soil Electrical Conductivity unit and data processing plus a color map and all related files on CD ready for use in GIS software applications. Delivered by mail and/or email for your convenience. $3 per acre
Ø Data Analysis & Map Interpretation - Veris Maps are overlaid and correlated with Aerial Infrared Maps and Yield Maps for a total analysis of the farm’s productivity and health. $100 per hour. Prices valid as of January 1, 2007 & are subject to change
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