Purdue UniversityAgronomy Department11 Sep 2001
Published at the Chat 'n Chew Cafe, 24 Apr 2002
URL: http://www.kingcorn.org/news/articles.02/GPS_Mapping-0424.html
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Got GPS Toys? Put Them to Work!

R.L. (Bob) Nielsen
Agronomy Dept., Purdue Univ.
West Lafayette, IN 47907-1150
Email address: rnielsen@purdue.edu

Maybe you were one of those fortunate few that received some GPS toys from Santa this past Christmas. Perhaps he left you a new pocket PC outfitted with a WAAS-enabled DGPS receiver and some nifty field mapping software? Maybe these new GPS toys helped you justify the purchase of that new ATV so that you could map a few field boundaries while you cruise around the farm?

Now that you’ve mapped the boundaries of every field on your farm (and maybe your neighbor’s fields, too) with these toys and grid soil sampled down to the nearest half acre, what else is there to do with these high-priced high-tech gadgets? The current delay to the start of corn and soybean planting offers an opportunity for georeferencing (mapping) potential yield limiting factors now before you get going on some serious planting.

Once you’ve mapped these yield limiting factors, don’t stop for the season. Put these GPS-enabled mapping and scouting devices to work throughout the year as other yield limiting factors develop.

Successful yield map interpretation depends on more than just soil maps and intensive soil nutrient sampling. There are a gozillion factors that influence the yield of corn and soybean, the combinations of which change every year. Successful site-specific crop management depends on site-specific identification of as many of these yield-limiting factors as is humanly possible.

Online Sources of Information:

Assorted brands of pocket PCs:
Field mapping & scouting software:
WAAS-enabled DGPS receivers for pocket PCs:
The usual disclaimer: The inclusion or exclusion of products, brand names, or Web sites in this article should not be construed as anything other than a representative list that could be used to assemble a portable GPS-enabled mapping/scouting system and does not constitute endorsement or lack thereof by Purdue University or its Extension Corn Specialist!

KingCorn.orgFor other information about corn, take a look at the Corn Growers Guidebook on the World Wide Web at http://www.kingcorn.org

It is the policy of the Purdue Agronomy Department that all persons shall have equal opportunity and access to its programs and facilities without regard to race, color, sex, religion, national origin, age, or disability. Purdue University is an Affirmative Action employer. This material may be available in alternative formats.
© 2002, Purdue University
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