Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 5 June 2006
Published in Agron J 98:1015-1022 (2006)
DOI: 10.2134/agronj2005.0283
© 2006 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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A Survey of Soil Attributes in North Dakota by Landscape Position

D. W. Franzena,*, T. Nannaa and W. A. Norvellb

a Dep. of Soil Sci., North Dakota State Univ., Fargo, ND 58105-5758
b USDA-ARS, U.S. Plant, Soil, and Nutrition Lab., Ithaca, NY 14853


Figure 1
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  		Fig. 1. Soil DTPA Zn levels from a 33-m grid sampling, layered over topography in a 16-ha field near Valley City, ND. Highest Zn levels are in depressions, and lowest levels are on ridge-tops. Data such as this at several site-specific sampling sites within the state were the inspiration for conducting a landscape-based state survey of soil factors.

 

Figure 2
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  		Fig. 2. Location of sampling sites in North Dakota. At least two, and most often three, sites within each of the state's counties were sampled. At each location, upland, slope, and depression landscape soil samples were obtained.

 

Figure 3
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  		Fig. 3. Hot-water-soluble B levels in upland, slope, and depressional positions, North Dakota.

 

Figure 4
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  		Fig. 4. DTPA Zn levels of upland, slope and depressional positions, North Dakota. Upland position Zn data set was not spatially related.

 

Figure 5
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  		Fig. 5. DTPA Cu levels of upland, slope, and depressional positions, North Dakota. Upland position Cu data set was not spatially related.

 

Figure 6
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  		Fig. 6. Soil pH of upland, slope, and depressional positions in North Dakota.

 

Figure 7
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  		Fig. 7. DTPA Cd levels in upland, slope, and depressional positions, North Dakota.

 

Figure 8
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  		Fig. 8. Plant available Se levels in upland, slope, and depressional positions, North Dakota.

 




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