A Bioassay of Some Campbell Island Soils
- Central Institute Technology, Private Bag, Trentham, New Zealand
- Department of Botany, University of Otago, P.O. Box 56, Dunedin, New Zealand.
- Present address: DSIR (Grasslands Division), Private Bag, Gore, New Zealand.
Growth of Avena sativa L. and Agrostis tenuis Sibth was measured on peat and mineral soils from sites on Campbell Island in the New Zealand subantarctic. For the peat soils, growth was strongly positively correlated with both pH and Mg levels and less strongly with Ca and Na. With the inclusion of the mineral soil data, only the fit between growth and Ca levels was significant.