Research Archive

The effects of competition between Lotus pedunculatus cv. "Grasslands Maku", white clover (Trifolium repens cv. "Grasslands Huia") and browntop (Agrostis tenuis) at different levels of applied phosphate

Research Archive

The effects of competition between Lotus pedunculatus cv. "Grasslands Maku", white clover (Trifolium repens cv. "Grasslands Huia") and browntop (Agrostis tenuis) at different levels of applied phosphate

Metherell, A. K.
Type: Dissertation
Permalink: https://hdl.handle.net/10182/4658
Originally published: 1979 by Lincoln College, University of Canterbury
Keywords: Lotus pedunculatus; white clover; Trifolium repens L.; Grasslands Maku; Grasslands Huia; browntop; Agrostis tenuis; phosphate fertiliser; competition; aluminium toxicity; insect pest resistance; soil phosphorus; yield components
Fields of Research: 070302 Agronomy; 070306 Crop and Pasture Nutrition; 079902 Fertilisers and Agrochemicals (Incl. Application)

Abstract:

The effects of competition between browntop (Agrostis tenuis), white clover (Trifolium repens) and Lotus pedunculatus were examined at five levels of phosphate fertilizer applied to a moderately acidic, phosphorus deficient Cass high country yellow brown earth in a glasshouse pot trial. This study demonstrated the ability of L. pedunculatus to outyield white clover at low levels of available soil phosphorus, but at high rates of fertilizer yields of the two species were similar. Although there was an indication that L. pedunculatus had a competitive advantage in terms of phosphorus uptake it did not significantly suppress the growth of white clover. The yield of the mixture of L. pedunculatus and white clover was generally intermediate to those of the two species growing alone. The balance of L. pedunculatus and white clover in the mixture was determined primarily by the level of phosphate fertilizer. Browntop reduced the yields of both legumes but had a greater effect on L. pedunculatus and markedly reduced the percentage of Lotus in the mixtures with white clover. The results are discussed in relation to aluminium toxicity and competition for light, nutrients and soil oxygen.

Show full item record

Files in this item

[PDF]
Name: metherell_bagrsc.pdf
Size: 6.243Mb
Format: PDF
Description: dissertation

This item appears in the following Collection(s)

Search Research Archive


Browse

My Account

Statistics