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3 edition of Inducing lightwood in pine trees by paraquat treatment found in the catalog.

Inducing lightwood in pine trees by paraquat treatment

Donald Ray Roberts

Inducing lightwood in pine trees by paraquat treatment

by Donald Ray Roberts

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Published by Southeastern Forest Experiment Station, U.S. Dept. of Agriculture, Forest Service in Asheville, N.C .
Written in English

    Subjects:
  • Paraquat,
  • Gums and resins,
  • Slash pine,
  • Longleaf pine

  • Edition Notes

    Statement[Donald R. Roberts].
    SeriesResearch note SE -- 191., Research note SE -- 191.
    The Physical Object
    Pagination[4] p. :
    ID Numbers
    Open LibraryOL17619545M
    OCLC/WorldCa54544330

    The stimulation of lightwood formation (oleoresin soaking) in Pinusresinosa Ait. treated with the bipyridylium salt, paraquat (1,1′-dimethyl-4,4′-bipyridylium dichloride), affected various. Pine trees are the dominant plants in many cool-temperate and boreal forests. They are particularly successful in cold areas where broad-leaved plants are unable to survive such as the boreal forest and at high altitude. Ecology of pine trees. Pines are well adapted to .

    Detection of weakened hosts from a distance by bark beetles through olfaction was investigated in field experiments. No significant numbers of Scolytidae were attracted to anaerobically treated pine bolts, stem disks, or sugar and ponderosa pine bark including phloem. Treatment of living trees with cacodylic acid induced attacks byDendroctonus brevicomis, D. ponderosae, Ips latidens.   Pine trees are considered a softwood tree, which means the wood is softer than hardwood varieties. Pine trees grow around the world, not just in the U.S. Pine .

      A main reason for this is because Pine trees represent eternal life, and thus pine cones represent the continuity and renewal of life. It truly all comes full circle. Planting Instructions. Ponderosa Pine seeds are very easy to germinate and grow, the dormancy within the seed is very short and easily broken. They require a small pre-treatment. 1. Wolter K.E. "Ethylene potential alternative to bipyridilium herbicides for inducing light wood in red pine". Proceedings Annual Lightwood Research Conference. pp, Wolter K.W. and Zinkel D.F. "Observations on physiological mechanisms and chemical constituents of induced .


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Inducing lightwood in pine trees by paraquat treatment by Donald Ray Roberts Download PDF EPUB FB2

@article{osti_, title = {Paraquat and pine trees in east Tennessee}, author = {Schnell, R L and Toennisson, R L}, abstractNote = {The Tennessee Valley Authority started a series of 8% Paraquat tests in east Tennessee on loblolly, shortleaf, and Virginia pines in the spring of In addition to species, we are also testing the effects of season of treatment application and the length.

Paraquat treatment has induced lightwood formation in all species of pines tested to date, but failed to cause a significant response in firs, spruces, hemlock, and Douglas-fir. In a year-old natural slash pine stand, paraquat concentrations as high as 24 percent caused only slight mortality. @article{osti_, title = {Paraquat-induced lightwood in two European conifers - Scotch pine and Norway spruce}, author = {Wroblewska, H and Conner, A H and Rowe, J W and Peters, W J and Roberts, D R}, abstractNote = {Paraquat treatment induced oleoresin-soaked lightwood in Scotch pine; borehole and ax-frill treatment methods were equally effective.

Paraquat treatment induced oleoresin-soaked lightwood in Scotch pine; borehole and ax-frill treatment methods were equally effective. Paraquat treatment of Norway spruce induced limited lightwood. The concentration of enhanced oleoresin formation in paraquat-treated trees may be as high as 40% on a dry weight basis months after treatment.

The amount of oleoresin normally obtained from pine by solvent extraction is approximately % or 50% of the total 3% ether or benzene - alcohol extractives of dry wood. The treatment induced formation of gum ducts and cavities in the sapwood (Nair et.

al., ). Guggul, an oleo-gumresin exuded by Commiphora wightii is the source of an important drug, the guglip, which possesses hypocholestraemic and hypolipaemic activi-ties and is used in the control of artherosclerosis, the main cause of coronary heart disease.

Field and laboratory ovipositional responses ofMonochamus alternatus Hope, respectively, to methanol and water extracts from pine inner bark were examined in comparison with those to pine inner bark, especially using a laboratory-built apparatus for the latter bioassay.

Irrespective of the existence of volatiles from paraquat-induced lightwood, pine inner bark and its methanol and water. [10] Roberts, D.R. Inducing lightwood in pine trees by paraquat treatment.

USDA Forest Research Notes SE [11] Shah, J.J. and Setia, R.C. Histological and histochemical changes during the development of gum canals in Sterculia urens. Phytomorphology Gum tears observed on treated Acacia senegal plants.

Spruce pine responds to treatment with paraquat by producing lightwood, that is, wood soaked with oleoresin. Its response is similar to that of slash pine, and the increase in turpentine produced is proportionately greater than the increase in resin acids (12).

Spruce pine is planted to some extent for use as a Christmas tree. Inducing lightwood in pine trees by paraquat treatment. USDA Forest Serv.

Res. Note SE Rockwood, D. L., and L. Frampton. Genetic variation in sand pine and slash pine for energy production in silvicultural biomass plantations.

Proc. 15th S. Forest Tree Improv. Conf. Treatment of eastern hemlock (Tsuga canadensis (L.) Carr.) with the herbicide paraquat did not induce formation of lightwood. However, a dead zone of phloem extended above the paraquat-treatment site. Controlled infestation ofDendroctonus terebrans (Olivier) on bolts of slash pine,Pinus ellionii Engelm.

tii, elicited greater attraction of wild conspecifics than uninfested bolts. Secondary attraction was not apparent, however, to standing slash pines that had received volunteer attacks, when compared with attraction to unattacked but susceptible trees.

Hindguts from in-flight or. Furfural is now produced commercially by acid treatment of the xylan in corn-cobs and sugarcane bagasse. Since it would be available in much greater quantity from wood hydrolysis, new applications would be needed. ROBERTS, D.R. Inducing lightwood in pine trees by paraquat treatment.

USDA Forest Service Research Note SE, April. The search for alternative biomass energy forms has centered on two approaches: (1) production of cellulose fiber in biomass of low net energy value p. Killing any tree seems a shame, but pine trees can become diseased, overgrown or may be situated in an inconvenient area.

Killing a mature pine tree can be difficult. Forest management professionals sometimes resort to burns, banding and chemical treatments and yet often the trees still come back. Irrespective of the existence of volatiles from paraquat-induced lightwood, pine inner bark and its methanol and water extracts stimulated ovipositional response only in the presence of free moisture.

We evaluated the effects of thinning and fertilization on eight indices of susceptibility to insects in loblolly pine trees (Pinus taeda L.) growing in a year-old plantation in eastern Virginia, U.S.A. Resin flow rates, starch concentratons in phloem, an index of relative growth, and bark and phloem thickness all were greater in trees in thinned plots than in control or fertilized plots.

Biomass 2 () BY-PRODUCT RECOVERY AND VALORISATION IN THE KRAFT INDUSTRY: A REVIEW OF CURRENT TRENDS IN THE RECOVERY AND USE OF TURPENTINE AND TALL OIL DERIVATIVES ALLAN JOHANSSON Industrial Technology Center, Battelle-Geneva Research Center, 7 Route de Drize, 7 Carouge, Geneva, Switzerland (Received:.

The development of alternative sources for energy and chemicals, particularly the use of plant biomass as a renewable resource for fuel or chemical feedstocks has received much recent attention.

This report reviews the chemical utilization of plant materials for liquid fuels or organic chemicals, and presents the possibility of producing hydrocarbon and related chemical products, directly or.

Trees treated with paste containing yeast extract and CEPA had oleoresin yield equivalent to that of trees exposed to commercial paste (Fig.

2A). This response was observed for all concentrations examined. Download: Download full-size image; Fig. Annual production of oleoresin by pine trees treated with yeast extract or paraquat.

Paraquat (1, 1'-dimethyl-4, 4' bipyridilium salt) induced heartwood formation in Azadirachta indica. The wood at the site of treatment showed desiccation. The induced heartwood is observed even at the height of 3 to metres from the site of the treatment.

Histochemical studies showed disappearance of starch grains and accumulation of lipids, insoluble polysaccharides and phenolics in the.To clarify the roles of volatile oil from paraquat-induced lightwood in the attack mechanism of Japanese pine sawyers, Monochamus alternates HOPE, on paraquattreated pine trees, field and.1.

Author(s): Sachs,I B Title(s): Paraquat-induced lightwood in red pine observed by scanning electron microscopy/ I.B. Sachs. In: Scanning electron microscopy.