shellbark造句

• Specific information for shellbark hickory is not available.
• Trees include the uncommon Big Shellbark Hickory.
• Rooting habit : Shellbark hickory develops a large taproot that penetrates deeply into the soil.
• The only specific fungus identified from shellbark hickory roots is an ectotrophic mycorrhiza,"
• Shagbark and shellbark hickory, along with pecan, are regarded by some as the finest nut trees.
• In part due to man's activities, shellbark hickory has become rare in its natural range.
• Land subject to shallow inundations for a few weeks early in the growing season is favorable for shellbark.
• Shellbark hickory is free of serious diseases, but it is a host species for a variety of fungi.
• Shellbark hickory is susceptible to bole injury from fire, and fire injuries are often invaded by wood rot fungi.
• Under forest conditions, shellbark hickory often develops a clear bole for half its length and has a narrow, oblong crown.
• None of them causes serious problems for shellbark hickory, although they may be responsible for some stem deformity and growth loss.
• Damaging agents : Although numerous insects and diseases affect hickories, shellbark hickory has no enemies that seriously threaten its development or perpetuation as a species.
• The most common trees in the swamp are Red Maple, Pin Oak, Shagbark Hickory, Shellbark Hickory, Swamp White Oak, American Elm and sweetgum.
• Reaction to competition : Shellbark hickory is very shade-tolerant, exceeded only by sugar maple ( " Acer saccharum " ) and beech ( " Fagus grandifolia " ).