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This profile was last updated on 2/1/09  and contains information from public web pages.

Employment History

Board Memberships and Affiliations


  • BS
    Augustana College
  • MS , Agronomy , with an emphasis in soil science
    South Dakota State University
Web References
If this is your first try ..., 1 Feb 2009 [cached]
If this is your first try at on-farm research, make it easy on yourself, and look for a fairly uniform field, suggets John Oolman, director of precision farming research for Agri-Growth Inc., Hollandale, Minn.
"Pick out a field that doesn't have a history of uneven manure application, doesn't have any old field boundaries in the middle and doesn't have large elevation changes," Oolman says. "Don't use the boundaries of the field - the headlands - because they're not typical of the rest of the field, either."
Look at a yield map or search your memory (and maybe the memories of your elders) to assure that the field is fairly uniform. "We've had some surprises," he says. "You'll find spots in a field that are real high in fertility and soil quality, and the 40-year-old farmers won't know why. But Grandpa will say, 'Happy Jack had an old hog farm there.' You'll still see high fertility leels around old homesteads and barns that have been gone for 50 years."
Oolman notes an alternative that farmers sometimes use to compare seed selection is to stirp-plant the field, loading one type of seed in half the planter, another type in the other side. Although this does not randomize the plots, it can be an acceptable method "if you do 25 or 30 strips like this," Oolman says.
Just take care not to favor one side over the other. "Make sure you're planting at the same depth," he notes.
Welcome to Modern Agriculture - The Journal for Site-Specific Crop Management, 21 Aug 2002 [cached]
By: John Oolman
Filling this information void is the goal of John Oolman, director of Concept Research at Agri-Growth, Inc. in Hollandale, MN.Agri-Growth conducts replicated studies under real field conditions on more than 1500 acres in southern Minnesota plus across the major corn, soybean, and wheat growing areas of the Midwest and High Plains."The studies are laid out side-by-side under field conditions in plots of 20 to 80 acres with precision ag technology.Harvest data is overlaid on maps for soil type, topography, organic matter, phosphorus, and potassium and analyzed through geostatistical GIS and spatial analysis," said Oolman."The results are calculated into return on investment, the grower's bottom line.These are the types of things a grower can do on his own farm to test products and practices." GIS technology layers the maps while graphs, tables, geostatistical, and statistical analysis interpret the data.GIS and GPS combined help move growers from plotting and describing areas in their fields to prescribing a product or management process.Modern GIS pushes beyond data mapping, management, and modeling to the spatial reasoning and processing techniques of this technology.
John Oolman is director of Precision Farming and Concept Research at Agri-Growth, Inc., in Hollandale, MN.Agri-Growth conducts Concept Research trials and offers training in precision agriculture.
ProYield Representatives, 22 Nov 2004 [cached]
John Oolman manages the concept research/data analysis and Soil Amendment and Plant Nutrient Calculator, for ProfitPro, LLC.He specializes in managing research in large-scale studies throughout the Midwest involving farm equipment, fertilizers, tillage, equipment, seed and pesticide performance.The studies provide useful information to farmers, agricultural researchers and agricultural businesses that can be used to improve profitability.He has a BS from Augustana College and a MS from South Dakota State University in Agronomy, with an emphasis in soil science, geostatistics, mathematics, and fertility.His expertise is in precision farming technologies, GPS, GIS, yield monitor systems, variable rate applications and remote sensing.
Honeywell SULF-N - Frequently Asked Questions, 16 Mar 2001 [cached]
John Oolman Agri-Growth
John Oolman Agri-Growth
John Oolman Agri-Growth
John Oolman Agri-Growth
John Oolman Agri-Growth
John Oolman Agri-Growth
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