Effect of site on growth of hybrid poplar clones planted on a commercial scale
Thesis/Dissertation
·
OSTI ID:5364448
Two-, four-, and five-year height growth of Populus hybrids were measured over a full range of USDA Soil Conservation Service natural and altered soil drainage and texture classes on fields planted by Packaging Corporation of America using intensive culture. Five clonal trials with 40 clones each were examined for 4-year height growth and were analyzed for effects of site, clone and site by clone interaction. Substantial soil variability became an important factor on the previously-planted sites and had to be considered in the statistical analysis. Ten clones with the best 4-year height growth were identified. Four- and five-year height growth of several of the most promising clones from the clonal trials were then examined over a range of soil/site conditions in commercial-size plantations using a tillage plus herbicide management system. Two-year growth was evaluated using a no-till system. Height growth under both management systems significantly decreased on sites other than those with the most optimum conditions for agricultural crops. Using the results from the clonal trials and the two tillage system studies, soil/site factors which affected establishment and early growth of hybrid popular plantings were summarized and outlined in detail, and a practical field guide was formulated for evaluating the potential of agricultural fields for the intensive culture of hybrid poplars.
- Research Organization:
- Michigan State Univ., East Lansing (USA)
- OSTI ID:
- 5364448
- Country of Publication:
- United States
- Language:
- English
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