Workshop Report: Poplar and willow planting for Land Overlay 3A, Gisborne, East Coast region
Recommended Research
Several respondents appeared to have differing viewpoints on:
- the relative contributions of evapotranspiration versus root reinforcement in studies of slope stability involving poplars and radiata pine;
- which of the two species had the greater evapotranspiration rate over a full year’s growth;
- improved understanding of interrelationships between plantings and site factors other than the two broad research areas above;
- how to establish equivalent effectiveness for poplars and radiata pine. The possibility of using empirical studies of poplar height, dbh, root strength to benchmark the effectiveness of poplar pole plantings at various densities compared to radiata pine (notes on this theme provided by Knowles (2007) and McIvor (2007)).
These topics are beyond the scope of this report but are nonetheless potential areas for future research.
It was also recommended that because “effectiveness” field surveys have to date largely been undertaken on Land Overlay 2 and 3 it would be worthwhile to commission a Hick’s style “random” assessment of the effectiveness of later clones of poplars and willows within Gisborne District and to include elements of Land Overlay 3A land.
Contact for Enquiries
East Coast Forestry Project
Ministry of Agriculture and Forestry
Cnr Grey St & Childers Rd
1st Floor ZGFM Building
PO Box 2122
Gisborne 4040
Tel: +64 6 986 8691
Fax: +64 6 986 8697
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