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Published online 1 March 1982
Published in Agron J 74:261-265 (1982)
© 1982 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Selecting Environmentally Analogous Areas for Agronomic Research Using Computer Graphics1

G. L. Ford and G. A. Nielsen2

Test plots are the foundation of most modern agricultural research programs. Experimental sites are frequently selected without substantial knowledge of surrounding land having similar environmental characteristics to which results can be directly applied. Thus, transfer of research results from experimental sites to environmentally analogous areas cannot be accomplished systematically or efficiently. Computer graphics were used in a study of the Montana Agricultural Experiment Station system to determine the amount and distribution of land having environments similar to those of existing research centers and to assist in locating a new center. The computer graphic system internally overlays maps of data and then plots single variable or composite maps showing the desired combination of environmental variables. Identifying agriculturally similar land facilitates the location of areas with potential for particular crop varieties or soil management practices, and permits more effective extrapolation of research results from experimental plots to farms.

Key Words: Land qualities • Technology transfer • Land resource data base • Map analysis • Research extrapolation

1 Contribution from the Montana Agric. Exp. Stn., Montana State Univ., Bozeman, MT 59717. Journal Article No. 1008.

2 Former graduate research assistant, presently assistant professor of environmental sciences and soil science, Univ. of Wisconsin-Extension and Univ. of Wisconsin-Stevens Point; and Professor of soils, Dep. of Plant and Soil Science, Montana State Univ., Bozeman, respectively.

Received for publication October 21, 1980.




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Copyright © 1982 by the American Society of Agronomy.