Abstract
`Melrose'/M.26 apple trees were root pruned annually for 8 yrs at full bloom on 2 sides to a depth of 25-35 cm. Spacial distribution was determined by counting roots on the exposed wall (2m × 2.5m area) of a trench and classifying them into 4 size classes. Root pruning caused a reduction in the total number of roots and the ratio of large to small roots in the 0-30 cm soil depth on the side of the tree that had been root pruned. Total number of roots declined in root pruned trees 60 and 90 cm from the trunk in the sample taken perpendicular to the root pruning cut, but not on the side parallel to the root pruning cut. Root number in all 4 size classes declined with depth and exhibited significant linear and quadratic patterns.
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