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RESEARCH ARTICLE
Contents Vol 28(2)

Native couch grasses for revegetating severely salinised sites on the inland slopes of NSW. Part 2

W. S. Semple A E , I. A. Cole B , T. B. Koen B , D. Costello C and D. Stringer D
+ Author Affiliations
- Author Affiliations

A NSW Department of Natural Resources, PO Box 53, Orange, NSW 2800, Australia.

B NSW Department of Natural Resources, PO Box 445, Cowra, NSW 2794, Australia.

C West Hume Landcare Group, Albury, NSW 2640 Australia.
Current address: Murray Catchment Management Authority, PO Box 797, Albury, NSW 2640, Australia.

D NSW Department of Primary Industries, Albury, NSW 2640, Australia.
Current address: Murray Catchment Management Authority, PO Box 121, Holbrook, NSW 2644, Australia.

E Corresponding author. Email: bill.semple@dnr.nsw.gov.au

The Rangeland Journal 28(2) 163-173 https://doi.org/10.1071/RJ06004
Submitted: 19 January 2006  Accepted: 17 May 2006   Published: 9 November 2006

Abstract

Perennial ‘couch’ grasses that reproduce from rhizomes and or stolons have some advantages on scalded saline sites where they can reproduce in situations that are often hostile to germination and establishment of obligate seeders. Promising couch grass species from an earlier evaluation at Wagga Wagga and Manildra were Cynodon dactylon, Paspalum vaginatum, Sporobolus virginicus and, to a lesser extent, Sporobolus mitchellii. This paper reports results of a subsequent evaluation of these species as well as Eragrostis dielsii and Distichlis distichophylla at 3 other saline sites (Burrumbuttock, Cudal and Cundumbul). All accessions were established vegetatively and assessed for vigour and survival (all sites), groundcover production and its relationship with EC and pH (2 sites), biomass production, forage value and the effect of regular cutting on groundcover (1 site). S. virginicus appeared the most tolerant to saline conditions and produced high levels of groundcover and biomass but was sensitive to regular defoliation. At the 2 alkaline sites, C. dactylon and D. distichophylla generally outperformed the other accessions in terms of persistence and groundcover but appeared to be relatively low in forage value, and D. distichophylla appeared to have significant weed potential. Paspalum vaginatum produced high groundcover and relatively high biomass of moderate forage value at Burrumbuttock but performed poorly at the other sites. S. mitchellii and E. dielsii persisted on the more benign sites producing only low amounts of dry matter and groundcover and may be useful for environmental plantings where low weed potential is paramount. Despite spatially intensive testing of the topsoil chemistry, there were no obvious relationships between EC or pH and plant performance at the 2 main trial sites – a possible consequence of vegetative propagation.

Additional keywords: alkalinity, biomass, forage value, groundcover, weed potential.


Acknowledgments

Thanks to Messrs. J. Coughlan (‘Cudal Park’, Cudal) and J. Corrigan (‘Fairview’, Burrumbuttock) for supplying the land and on-going access for the trials, S. Jaensch, C. Huxtable and M. Eddie, who collected some Sporobolus accessions for us and Mrs. C. Rose for access to unpublished data. Student volunteers, Ms. E. Mendham and Mr. S. Roberton, occasionally assisted with activities at Burrumbuttock. Soil testing was carried out by Mrs. M. Rankin at Cowra and at the Department of Natural Resources’ soils laboratory at Gunnedah. Helpful comments on the manuscript were provided by Mr. P. Norman. Forage analysis of grass samples by ‘FeedTest’ was funded by part of a grant the West Hume Landcare Group received from the Sustainable Grazing from Saline Land project.


References


Anon. (2005). ‘Native grasses for saline rehabilitation in the Wimmera.’ (Victorian Department of Primary Industries: Horsham.)

Brown A. J. (2005). Seed germination characteristics of native grasses adapted to saline environments. In: ‘Proceedings 4th National Native Grasses Conference’. (Eds C. O’Dwyer and S. Hamilton.) pp. 122–127. (University of Melbourne: Dookie.)

Burvill G. H., Marshall A. J. T. (1951) Paspalum vaginatum or sea shore paspalum. Journal of Agriculture, WA (2nd series) 28, 191–194. open url image1

Cunningham G. M. , Mulham W. E. , Milthorpe P. L. , and Leigh J. L. (1981). ‘Plants of western New South Wales.’ (Soil Conservation Service of NSW/NSW Government Printer: Sydney.)

Emmel R. H. , Stux R. L. , and Sotera J. J. (1976). ‘Atomic absorption methods manual. Vol. 1. Standard conditions for flame operation.’ (Instrumentation Laboratory Limited: Wilmington.)

Lang D. , and Holmes M. (1995). ‘The cover equation: how much is enough?’ (Department of Land and Water Conservation: Sydney.)

Loch D. S. , and Lees T. W. (2001). Halophytic native grasses for stabilisation and rehabilitation of salt-affected sites in northern Australia. In: ‘Proceedings of the 4th Australian Workshop on Native Seed Biology for Revegetation’. (Eds S. W. Adkins, S. M. Bellairs and L. C. Bell.) pp. 235–246. (Australian Centre for Mining Environmental Research: Kenmore.)

Rayment G. R. , and Higginson F. R. (1992). ‘Australian laboratory handbook of soil and water chemical methods.’ (Inkata Press: Sydney.)

Rose C. , and Rose H. (2005). Productivity and forage quality of water couch (Paspalum distichum): an important native species in grazed coastal wetlands. In: ‘Proceedings of the 4th National Native Grasses Conference’. (Eds C. O’Dwyer and S. Hamilton.) pp. 62–65. (University of Melbourne: Dookie.)

Russell J. S. (1976) Comparative salt tolerance of some tropical and temperate legumes and tropical grasses. Australian Journal of Experimental Agriculture and Animal Husbandry 16, 103–109.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Semple W. S., Cole I. A., Koen T. B. (2003a) Performance of some perennial grasses on severely salinised sites of the inland slopes of New South Wales. Australian Journal of Experimental Agriculture 43, 357–371.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Semple W. S. , Cole I. A. , Costello D. , and Koen T. B. (2003 b). Preliminary assessment of a new suite of native grasses on saline sites. In: ‘Proceedings of the 3rd National Conference on the Management of Native Grasses and Pastures’. (Eds C. O’Dwyer and S. Hamilton.) pp. 161–163. (University of Melbourne: Dookie.)

Semple W. S. , Cole I. A. , and Koen T. B. (2004 a). Exotic v. native salt-tolerant species: our choice now but a potential burden for future generations? In: ‘Proceedings of the Conference on Salinity Solutions: Working with Science and Society’. (Eds A. Ridley, P. Feikema, S. Bennett, M. J. Rogers, R. Wilkinson and J. Hirth.) CD-ROM – Poster session, theme 3. (CRC for Plant-Based Management of Dryland Salinity: Perth.)

Semple W. S., Cole I. A., Koen T. B. (2004b) Native couch grasses for revegetating severely salinised sites on the inland slopes of NSW. The Rangeland Journal 26, 88–101.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Semple W. S., Cole I. A., Brown A. J., Koen T. B. (2005) In search of salt-tolerant plants: are we avoiding native species? Native Grass South Australia 2, 80–83. open url image1

Semple W. S., Koen T. B., Eldridge D. J., Duttmer K. M., Parker B. (2006) Variation in soil properties on two partially revegetated saline scalds in south-eastern Australia. Australian Journal of Experimental Agriculture 46, 1279–1289.
| Crossref |
open url image1

Slavich P. G., Petterson G. H. (1993) Estimating the electrical conductivity of saturated paste extracts from 1 : 5 soil : water suspensions and texture. Australian Journal of Soil Research 31, 73–81.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Stubbendieck J. , Friisoe G. Y. , and Bolick M. R. (1994). ‘Weeds of Nebraska and the Great Plains.’ (Nebraska Department of Agriculture: Lincoln.)

Truong P. N. , and Roberts M. H. (1992). Salt tolerance of some tropical and subtropical grass species grown in Queensland. In: ‘Proceedings of the 2nd National Workshop on Productive Use of Saline Land’. (Ed. T. N. Hermannn.) pp. 36–44. (South Australian Department of Agriculture: Adelaide.)

Tucker B. M. , and Beatty H. J. (1974). Exchangeable cations and cation exchange capacity. In: ‘Methods of analysis for irrigated soils. Technical communication no. 54’. (Ed. J. Loveday.) pp. 118–130. (Commonwealth Agricultural Bureaux: Farnham Royal.)

Wheeler D. J. B. , Jacobs S. W. L. , and Whalley R. D. B. (2002). ‘Grasses of New South Wales.’ (University of New England: Armidale.)









1Except where indicated, botanic nomenclature follows that of Wheeler et al. (2002).