Frequency Distribution of Tract Productivity Indexes and Examples of Their Utilization in Rural Land Assessment
1975
Mausel, P. W. | Runge, E. C. A. | Carmer, S. G.
The soil conservation needs inventory 2% sample of soil data for Illinois was combined with productivity indexes to obtain state, county, and subcounty soil productivity characteristics that were used to evaluate variations in rural land quality. State soil productivity distributions were developed to provide a general framework of soil quality. Frequency diagrams (histograms) of county soil productivity indexes were constructed. Ratios comparing soil productivity histograms for the state and each county were developed and analyzed. Productivity characteristics of soil associations were provided for each county by a table that gives the percentage of the county in each soil association, the percentage of each soil association in each of seven productivity index categories used in the histogram format, and compares ratios between state and county soil association productivity indexes within the seven productivity index categories. The productivity index data using formats developed can be applied to evaluate the relative quality of soil for agricultural use between counties and between soil associations within counties. These data should aid county and state officials in evaluating rural land assessments.
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