Publication Date

1993

Description

Earlier research in Australia and New Zealand has shown that legume growth and persistence may be reduced in the presence of perennial ryegrass (Lolium perenne L.) which frequently contains the endophyte Acreonium lolli Mechanisms to explain these effects need further elucidation. A pot experiment, conducted in a glasshouse, showed that a mulch of senescent perennial ryegrass, which frequently contained A. lolli, reduced the standard of nodulation, root length and shoot and root dry weight of 32-day-old subterranean clover (Trifolium subterranean L.) plants, compared with those grown with mulches which contained less endophyte. The growth of clover plants grown with the ryegrass mulch with lowest endophyte content was no different to growth of clover grown with a chemically inert plastic mulch. Allelopathic effects from the endophyte are discussed.

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Allelopathic Effects of Endophyte in Perennial Ryegrass Residues on Young Subterranean Clover Plants

Earlier research in Australia and New Zealand has shown that legume growth and persistence may be reduced in the presence of perennial ryegrass (Lolium perenne L.) which frequently contains the endophyte Acreonium lolli Mechanisms to explain these effects need further elucidation. A pot experiment, conducted in a glasshouse, showed that a mulch of senescent perennial ryegrass, which frequently contained A. lolli, reduced the standard of nodulation, root length and shoot and root dry weight of 32-day-old subterranean clover (Trifolium subterranean L.) plants, compared with those grown with mulches which contained less endophyte. The growth of clover plants grown with the ryegrass mulch with lowest endophyte content was no different to growth of clover grown with a chemically inert plastic mulch. Allelopathic effects from the endophyte are discussed.