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Dry matter energy and nutrient contents of 8 year old stands of eucalyptus regnans acacia dealbata and pinus radiata in new zealand

, : Dry matter energy and nutrient contents of 8 year old stands of eucalyptus regnans acacia dealbata and pinus radiata in new zealand. New Zealand Journal of Forestry Science 15(2): 142-157

Acacia dealbata Link. and Eucalyptus regnans F. Muell. growing on a productive site contained 75% and 65% more dry matter in the above-ground parts of the trees than did an adjacent stand of Pinus radiata D. Don. The eucalypt and pine growth was close to that expected from more extensive studies in the same area. The most striking difference among the stands was their nitrogen economy. To a depth of 40 cm btut excluding roots in the soil, the A. dealbata contained over 60% more nitrogen than P. radiata and 40% more than the E. regnans. Using pine as a basis, E. regnans and A. dealbata had accumulated 77 and 277 kg N/ha/annum for 8 years.


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