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  1. The soil analysis (testing) methods described in this laboratory guide are the more commonly used methods applicable to most soil types. To assist manual users, interpretation data for analysis results are given for each method.

  2. The limits are useful for soil classification and correlate with the soil’s engineering behavior, such as compressibility, permeability, shrink-swell, and strength. The shrinkage limit (SL) can be useful

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  3. There are two main methods for soil sampling in spatially explicit management — zone-based sampling and grid sampling. With each method, soil samples are collected from predefined areas in a field. By correlating the soil test results with the area of the Figure 3. An example of zig-zag sampling pattern for whole field sampling.

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  4. Soil fertility testing is really the combination of three discrete but interrelated processes: analysis, interpretation, and recommendation (Eckert,1987). Many differences in these three processes exist between labs in different parts of the country and can be the source of great confusion.

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  5. The weight and volume of a soil sample depends on the specific gravity of the soil grains (solids), the size of the area between soil grains (voids or pores) and the amount of void space filled with water. Common terms associated with weight-volume relationships are shown in Table 3-1.

  6. This manual represents a revision and update of the methods of soil analysis currently in use by the Canada-Manitoba Soil Survey. The material was largely derived and updated from Laboratory Methods of the Manitoba Soil Survey (Beke, 1972), with additional information obtained from the Manual on Soil Sampling and

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  8. The compression index of silts, clays, and organic soils has been correlated with the natural water content, initial void ratio and the liquid limit. The approximate values of Cc, for uniform sands in the load range of 1 to 4 tsf may vary from 0.05 to 0.06 (loose condition), and from 0.02 to 0.03 (dense condition).

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