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A Test in Campeche, Mexico, of Treated and Untreated Fence Posts from Two Tropical Species

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Treated and untreated posts from the species kitinche (Caesalplnia gaumeri Greenm.) and lolom (Cordia alliodora [R. and P.] Cham.) were tested for durability in a fence line at the El Cayal Experiment Station, Campeche, Mexico, during the period September 1957 to September 1962. The lolom posts absorbed approximately double the amount of preservative (5 percent pentachlorophenol solution) absorbed by the kitinche posts. However, at the end of the 5-year period, 84 percent of all lolom posts were broken while 87 percent of all kitinche posts were unbroken. The preservative solution significantly prolonged the life of the small and medium class treated posts. Survival of the treated posts was approximately 9 percent better than untreated posts in both classes. The results also indicate that unpeeled, untreated kitinche posts are very durable under field conditions in Campeehe. Lolom posts are easily peeled and absorb more preservative solution than do kitinche posts, yet are not as durable. Further tests of lolom posts, with different treating schedules and preservative solutions, are indicated. Full significance of treatment for kitinche posts will probably not be realized until the tests have continued for a longer period, because of the posts' over-all durability.
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Document Type: Journal Article

Affiliations: Director, El Cayal Expt. Sta., Ministry of Agriculture, Campeche, Camp., Mexico

Publication date: 1964-06-01

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