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Tree Assimilation of Nitrogen

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Adequate availability of nitrogen in soils is but one problem facing trees. Moving nitrogen inside a tree presents a number of unique constraints and solutions. Transporting some materials across root cell membranes can be accomplished by simple diffusion where materials move from high concentrations to low concentrations. Transport can also be associated with moving electrostatically charged ions from places with like-charges to places of opposite-charges. Active transport systems are used by root cells for nitrogen uptake.

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Community and Urban Forestry
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