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    Author(s): A.N. Foulger; J. Hacskaylo
    Date: 1968
    Source: In: Proceedings of the Eighth Lake States Forest Tree Improvement Conference; Res. Pap. NC-23. St. Paul, MN: U.S. Forest Service, North Central Forest Experiment Station. 41-47
    Publication Series: Research Paper (RP)
    Station: North Central Research Station
    PDF: View PDF  (206.72 KB)

    Description

    Investigations of mineral nutrient-tree growth relationships have dealt mainly with associations involving foliage composition, root formation, or volume production of wood. Few studies have been concerned with changes in wood anatomy associated with element deficiency. In 1949 Davis reported that calcium deficiency was accompanied by a reduction of primary tissue and an increase in secondary tissue in loblolly pine (Pinus taeda L.) stems. Murphey et al. (1962) found that nutrient defiencies affected the percentage of phloem formed and reduced both vessel diameter and the number of rays in sweetgum (Liquidambar styraciflua L.) seedlings. There was no apparent change in fibril angle.

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    Citation

    Foulger, A.N.; Hacskaylo, J. 1968. Stem anatomy variation in cottonwood. In: Proceedings of the Eighth Lake States Forest Tree Improvement Conference; Res. Pap. NC-23. St. Paul, MN: U.S. Forest Service, North Central Forest Experiment Station. 41-47

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