New Zealand Journal of Agricultural Research abstracts

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Adaptation to low fertility hill country in New Zealand of white clover lines selected for differences in response to phosphorus

J. R. CARADUS
A. DUNN

AgResearch Grasslands
Private Bag 11008
Palmerston North, New Zealand

Abstract  White clover breeding lines developed as high and low P-responsive, in glasshouse selection trials, were compared, over three years, with 17 other breeding lines and cultivars for growth in four soil-fertility treatments under two defoliation treatments on a hill-country farm. Differences between P-response groups were transitory and biologically insignificant. Selection for differences in response to P in a controlled environment was not successful in identifying white clover germplasm adapted to low P hill-country soils. White clover breeding lines and cultivars that achieved high growth over the 3-year duration of the trial had New Zealand parentage and were all medium to small leaf types.

Keywords  cultivars; low phosphorus tolerance; selection; Trifolium repens; white clover

New Zealand Journal of Agricultural Research, 2000, Vol. 43: 63-69

0028-8233/00/4301-0630 $7.00/0 (c) The Royal Society of New Zealand 2000

PDF file of entire paper: medium quality (460K); (scanned from paper original: notes about this process)

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