Growth of Norway and Sycamore Maple Taxa in Tennessee

in HortScience
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  • 1 1Univ. of Tennessee, P.O. Box 1071, Knoxville, TN 37901
  • | 2 2Tennessee State Univ., Nursery Crops Research Station, 472 Cadillac Lane, McMinnville, TN 37110

Commercially available Norway and sycamore maple taxa were established as 10 single-plant replications in a cultivar trial at the TSU–NCRS in 1993 and Spring 1994. Each plant was fertilized regularly and drip irrigation was begun Summer 1993. Vegetation within tree rows was controlled with preemergent and postemergent herbicides, while grassed middles were mowed. Growth data was recorded in Fall 1993 and 1994 and height and caliper increment calculated for the 1994 season. In this group of 29 taxa, 9 cultivars were in the group with most height growth: `Columnare', `Pond', `Deborah', `Crystal', `Parkway', `Columnarbroad', `Schwedleri', `Summershade', and `Fairview'. With some exceptions, cultivars with the most height growth tended to have the most caliper growth, while those with the least height growth tended to have the least caliper growth, with the notable exception of `Columnar'. Data will also be presented on insect and disease ratings.

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