Abstract
Seasonal variations in the spatial distribution of root tips were studied in 19 and 29 year old teak plantations, located on red and alluvial soils respectively. The pattern was essentially similar at both sites, but generally the alluvial soil site exhibited a greater number of root tips. Root tips decreased with increasing distance from the tree base. Through-out most of the year the relative distribution of root tips decreased with depth; the difference between 0–10 and 10–20 cm depths was marginal, but 20–40 cm depth contained distinctly fewer root tips. At all distances a similar seasonal trend was noticed, a mid rainy season peak being followed by a steady decline until the dry summer except for an abrupt rise to a smaller peak in February after the winter rains.
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