New Zealand Journal of
Agricultural Research abstracts
Trace element accumulation by
poplars and willows used for stock fodder
Brett Robinson1,2
Tessa Mills1
Steve Green1
Benoit Chancerel1
Brent Clothier1
Lindsay Fung3
Sarah Hurst1
Ian McIvor1
1HortResearch
Private Bag
11 030
Palmerston North, New Zealand
brett.robinson@env.ethz.ch
2Institut
für Terrestrische Ökologie
Universitätstrasse
16, ETH Zentrum CHN F 29.1
CH-8092 Zürich, Switzerland
3Horizons
Manawatu
Private Bag
11 025
Palmerston North, New Zealand
Abstract Poplars
and willows can accumulate high concentrations of some trace elements.
We investigated the extent and nature of B, Cd, Co, Cu, Fe, Mn, and Zn
accumulation in some commercial poplar and willow clones by using a
lysimeter experiment and field collection of data. Trace element
accumulation was a function of leaf age and the variety or species of
tree. Leaf B, Cd, Mn, and Zn concentrations increased throughout the
season, while Cu decreased and Fe remained unchanged. Poplars and
willows accumulated high concentrations of the trace elements tested,
relative to pasture. The accumulation of Cd is of concern, especially
in willows. Stock exposure to Cd can be managed by judicious clone
selection, harvesting young shoots, or harvesting early in the season.
Poplars and willows may be used as feed supplements to increase Co and
Zn intake by livestock. The varieties ‘Yeogi’ and ‘Crow’s Nest’
accumulated the highest concentrations of Co, yet their Cd
concentrations were not significantly higher than pasture.
Keywords heavy
metal; nutrition; toxicity; clonal variation; cadmium
A05008; Received 11 March 2005;
accepted 24 August 2005; Online publication date 12 October 2005
New Zealand Journal of
Agricultural Research, 2005, Vol. 48:
489–497
0028–8233/05/4804–0489 © The Royal Society of New
Zealand 2005
PDF file of entire paper: Print-quality
(906K) | screen-quality
(407K)
This year's abstracts
|
Journal
home page |
All abstracts
|
Publishing
home page
