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Boron Deficiency in Pinus radiata And P. pinaster

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In Pinus radiata and P. pinaster boron deficiency produces characteristic injuries to first year shoots following an initial period of normal elongation. "Shoot dieback" is marked by death, needle loss and distortion of an unlignified outer portion, above a transition zone with shortened discolored needles and maculate pith; abundant fascicle shoots arise below. In "tip dieback" only the shoot apex is damaged but elongation and needle length are reduced, and fascicle meristems are stimulated to form buds. Occurence and severity vary within wide limits. Affected trees have less than 8 ppm B in undamaged first year needles. Borax applications prevent dieback and increase growth.

Document Type: Journal Article

Affiliations: Principal Scientific Officer, Forest Research Inst., Rotorua, New Zealand

Publication date: 1965-12-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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