Effects of subsoiling on lateral roots, sucrose metabolizing enzymes, and soil ergosterol in two jeffrey pine stands
The authors determined the effects of subsoiling on woody lateral roots and enzyme activities involved in stem carbon metabolism of 90- the 100-year-old Jeffrey pine (Pinus jeffreyi Grev, and Balf.) growing on the eastern side of the California Sierra Nevada Range. Twelve 1.0-ha plots were established on each of two sites. Four site treatments--thinning and subsoiling entire plots, thinning and no subsoiling, thinning and subsoiling skid trails only, and no thinning or subsoiling (undisturbed control)--were replicated three time on each site. Root excavations and assays of stem cambium sucrose metabolizing enzymes were carried out during the summer and fall of 1994 and 1995. Subsoiled plots had more roots less than 1 cm in diameter exhibiting dieback than undisturbed plots.
- Research Organization:
- Forest Service, Athens, GA (United States). Southern Research Station
- OSTI ID:
- 422096
- Report Number(s):
- PB-97-121800/XAB; TRN: 70031216
- Resource Relation:
- Other Information: DN: Pub. in Tree Physiology 16, 1009-1013(1996); PBD: 1996
- Country of Publication:
- United States
- Language:
- English
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