Loblolly turpentine

Sutherland MD, Wells JW 1956 A re-examination of Indian and loblolly turpentines. J Org Chem 21 1272-1275... 

The behavioral activity of the compounds isolated from the yeasts was tested in laboratory bioassays on pedestrian male and female D. frontalis (446, 448). In this bioassay procedure, a standard attractant mixture of frontalin trani-verbenol loblolly turpentine (1 1 12), referred to subsequently as the triplicate standard, was used. None of the yeast metabolites exhibited any activity alone. The two acetate esters were found to enhance the attractiveness, mainly of males, to the triplicate standard, especially at low concentrations of triplicate standard and ester. 2-Phenyl-ethanol decreased the response of females to the triplicate standard. More recent results on the inhibitory effect of 2-phenylethanol on the response of females has shown that a concentration of triplicate standard that gives a response of 50—60% can be substantially decreased by the addition of 2-phenylethanol at concentrations up to 10 times lower than that of the triplicate standard (Brand, unpublished data). 

Wood wastes do sometimes contain substances that are toxic to plants. In the studies with the 28 species of trees, Allison (1965) reported that most of the woods and barks were not toxic, but California incense cedar and white pine bark were very toxic to garden peas even at the rates of 1 and 2% added to soil in the presence of adequate nitrogen and lime. The woods of red cedar, Ponderosa pine, and loblolly pine, and the barks of California incense cedar and yellow poplar were slightly toxic at the 2-4% rates. The toxicity symptoms usually decreased with time during the two- to three-month period following addition to the soil. There have also been reports that a few other woods, such as walnut, hemlock, fir, and balsam are sometimes, but not always, toxic. Toxicity seems to vary with the age of the tree, and is also dependent upon the quantity added and the test plant. Decomposition time curves, reported by Allison, indicate that it is not uncommon for wood products to slightly retard early decomposition, apparently until the toxic materials disappear. The chemical nature of any toxic products present is not known with certainty but some investigators have attributed the toxicity to resins, turpentine and tannins. 

Pearl IA 1975 Variations of loblolly and slash pine bark extractive components and wood turpentine components on a monthly basis. Tappi 58 146-149... 

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See also in sourсe #XX -- [ ]

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