COMPARISON OF WOOD PRESERVATIVES IN MISSISSIPPI POST STUDY.
Annual progress rept. for 1964,
FOREST PRODUCTS LAB MADISON WIS
Pagination or Media Count:
Experimental untreated southern yellow pine posts installed from 1936 to 1938 at the Harrison Experimental Forest, Saucier, Miss., had an average life of 3.3 years. Untreated longleaf pine posts installed in 1949 had an average life of 2.3 years, while those treated with a No. 2 fuel oil and with Wyoming residual petroleum oil have an estimated average life of 5 and 8 years, respectively. Of southern yellow pine posts installed from 1936 to 1941, those treated with borax-boric acid all failed with an average life of 10.6 years. Posts treated with the following preservatives and installed from 1936 to 1941 have had failures totaling 10 or less of the number installed and should last 43 years or longer on an average Pentachlorophenol, 4,8 in crankcase oil copper sulfate and sodium arsenate applied by double diffusion and zinc meta arsenite. Author