New Zealand Journal of Agricultural Research abstracts

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Fertiliser and grazing rejuvenation of fescue tussock grassland

D. SCOTT

AgResearch
P.O. Box 60
Lincoln, New Zealand

Abstract  Tussock density, height, and flowering frequency, vegetation composition, and soil chemistry were measured in a 9-year fertiliser trial without pasture seeding on hieracium-infested fescue-tussock grassland in New Zealand. A factorial of 3 superphosphate rates by 3 nitrogen fertiliser rates by 2 nitrogen types was applied in the first 3 years, and half the plots received a single grazing in the 5th year. Effects were small but continued to develop after fertilisation ceased. While a single grazing initially depressed tussock height it subsequently enhanced height. There were changes in relative species abundance in response to fertiliser. Soil P and S levels increased with superphosphate fertiliser but decreased with N fertiliser, probably reflecting uptake by the increased shoot biomass and litter.

Keywords  Festuca novae-zelandiae; Hieracium pilosella; fertiliser; N; P; S; restoration

New Zealand Journal of Agricultural Research, 2000, Vol. 43: 481-490

0028-8233/00/4304-0481 $7.00/0 (c) The Royal Society of New Zealand 2000

PDF file of entire paper: medium quality (811K); (scanned from paper original: notes about this process)

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