BL 34D - Crop Ecology

Semester 2 1998-99

Lectures 15 and 16 - Soils

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Particle Size Analysis by Hydrometer Method and
The British Soil Science Society version of this method.


Figure. The soil triangle


Determination of Soil Moisture Content - gravimetric method.

In a bulletin, A comparison of three methods of determining soil water content, the ThetaProbe and Speedy Moisture Tester were compared to the more traditional gravimetric method, as means of determining soil water content.
The ability of these methods to measure soil water content was tested on two contrasting soils in KwaZulu-Natal. Regression analysis indicated that these methods were comparable on a soil specific basis at the P 0,001 level of significance, and they were found to be equally suitable for measurement purposes. Results and problems encountered for each method are also discussed.

Determination of Soil Organic Matter Content Using a Muffle Furnace.

Determination of Soil pH

Links

Recommended Soil Testing Procedures for the Northeastern United States - 12 chapters.
Soil Analysis Practical at Eastern Connecticut State University.
Keys to Soil Taxonomy by Soil Survey Staff, United States Department of Agriculture, Natural Resources Conservation Service.
The Eleven Soil Orders. Several images representing each of the 11 soil orders are available for viewing at the University of Idaho, Soil Science Division.
Glossary of Soil Science Terms. by the Soil Science Society of America.
Crop Fertilization Based on North Carolina Soil Tests
An example of a commercial laboratory soil analysis information sheet, information to be submitted with a soil sample.
British Society of Soil Science Chemical Methods Database
Soil Test Kits
Mycorrhizal Interactions in Sustainable Agriculture by R.P. Schreiner and G.J. Bethlenfalvay


This page last updated 19 March 1999

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