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An Introduction to the Soils of the Esperance Advisory District

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An Introduction to the Soils of the Esperance Advisory District Research Library Bulletins 4000 - Research Publications 1990 An introduction to the soils of the Esperance advisory district T C. Stoneman Tim D. Overheu P G. Muller National Soil Conservation Program (Australia) Follow this and additional works at: https://researchlibrary.agric.wa.gov.au/bulletins Part of the Agriculture Commons, Natural Resources Management and Policy Commons, and the Soil Science Commons Recommended Citation Stoneman, T C, Overheu, T D, Muller, P G, and National Soil Conservation Program (Australia). (1990), An introduction to the soils of the Esperance advisory district. Department of Primary Industries and Regional Development, Western Australia, Perth. Bulletin 4230. This bulletin is brought to you for free and open access by the Research Publications at Research Library. It has been accepted for inclusion in Bulletins 4000 - by an authorized administrator of Research Library. For more information, please contact [email protected]. Agdex 524 ISSN 0729-0012 BULLETIN= June 1990 AN INTRODUCTION TO THE EgPERANCEE ADVISORY DISTRICT -descriptions, illustrations and notes on seven common soils COMPILED BY T.C. STONEMAN, T.D. OVERHEU AND P.G. MULLER National Soil Conservation Program WESTERN AUSTRALIAN DEPARTMENT OF AGRICULTURE IForeword Descriptions, illustrations and notes on nine common soils This publication is one of a series dealing with soils pH values - pH values recorded in the text are from 1:5, commonly occurring, or of particular significance, in 0.01 M calcium chloride (CaC12) solutions or 1:5 soil the wheatbelt advisory districts of the Department of water extracts depending on the availability of data. Agriculture. The districts regarded as'wheatbelt' are Sometimes pH values are given for both procedures. Geraldton, Three Springs, Moora, Northam, Merredin, Soil maps the maps indicating where each soil most Narrogin, Katanning, Lake Grace, Jerramungup, Albany - commonly occurs are derived from interpretations of and Esperance (see map). Most of the publications will Sheet 5 of the 'Atlas of Australian soils' (Northcote et al. be in this format, but the Northam Bulletin will be rather 1967). However, the maps showing the distribution of more comprehensive in its coverage of the soils, land- some soils are limited in their reliability due to the lack and agriculture, scapes of adequate soils information. The publications have the objective of encouraging and Particular acknowledgement is made for funds provided aiding recognition by advisory staff and farmers of by the National Soil Conservation Program to assist the different wheatbelt soils and the development of greater a Department of Agriculture undertake this project. appreciation of the influence that soil characteristics have on land capabilities. Particular points to note with respect to the terminology and descriptions used in this publication follow. Great Australian Soil Groups - the names used follow theidentifications discussed by Stace et al. (1968) in 'A handbook of Austral- ian soils'. Northcote soil classification - as described in Northcote, K.H. (1979) 'A factual key for the recognition of Australian soils'. Soil profile sketches - these line drawings interpret the profiles presented in the match- • Geralchon ing colour photographs. ,_.___n.—, 1 Colour photographs of the colour h' • - many Three Springs photographs show a darker coloured vertical band of soil on either side of the depth tape. The strip has been moistened and is intended t— to indicate moist and dry soil colours. Merredin Northam I • Soil colours - the common names used in soil • descriptions are standard names derived from Perth Munsell soil colour codes. Narnogin • Lake Grace • • Katanning L - * T. C. Stoneman formerly Principal Officer, Soil Jemarnungup - • Conservation Branch, Department of Agriculture. Present address 112 Rosedale Street Floreat Park 6014 T. D. Overheau, Research Officer, Esperance District Office. P. G. Muller, formerly Research Officer, Esperance District Office, now with the Queensland Department of Primary Industry. 3 IThe Esperance advisory district The Esperance Office of the Department of Agriculture The western part of the sandplain is dissected by five services an advisory district embracing the shires of major south-flowing rivers which terminate in inlets or Esperance and part of Ravensthorpe. The district has an lakes on the coastal plain. The rivers flow only in winter area of approximately 1.6 million hectares and has about and in summer only pools of brackish water remain. The 600 farms. valleys have moderate to steep sided slopes and are incised 60 below the general level of the Geologically, the Esperance district is underlain by up to m sandplain. East of Esperance the sandplain lacks well- Proterozoic igneous rocks. West of the Salmon Gums- defined drainage lines apart from several short coastal Esperance highway, the rocks are dominantly gneisses, streams which extend only 10 to 15 km inland. while to the east they are mainly granitic. Much of the area of the granite bedrock is overlain by thin discon- There are no well-defined watercourses in the central tinuous layers of sedimentary rocks (sandstone, siltstone, and eastern mallee and the salt lakes act as drainage lignite and spongolite). The physiography of the district sumps. is that of a level to undulating plain, which in the western The soils of the sandplain are mainly duplex soils with parts, has been dissected by well-incised drainage lines. gravelly sand surfaces (lateritic podzolic soils, Soils 1 The plain slopes to the south from its northern fringe and 2; yellow podzolic soil, Soil 4 and deep sands, (Dowak 290 m a.s.1.) until it reaches a low escarpment podzols, Soil 3) while in the more northern mallee area, near the coast. The escarpment falls from 10 to 40 m to soils are chiefly calcareous, alkaline and sodic (solodic, coastal plain which is, in places, only 10 a narrow m Soil 5; solonized brown soil, Soils 7 and 8; calcareous above level. Prominent sand dunes border much of sea yellow earth, Soil 9; and solodized solonetz, Soil 6). the coast and cover large areas of the coastal plain. Agricultural land use is predominantly sheep grazing From the edge of the escarpment to an inland contour of and cropping; cattle raising is practised by some farmers about 180 m lies the 'Esperance sandplain' comprising on the sandplain. Crops grown include wheat, barley, the southern half of the advisory district. The northern lupins, oats and small areas of oilseeds, field peas and part of the advisory district comprises the mallee' area, summer fodder crops. which is quite different in character from the sandplain, carrying taller trees and having heavier soils. Granitic domes, lakes and the dissected drainage lines are prominent features of the plain. The granitic domes are smooth rounded masses of bedrock which protrude to varying heights above the plain. Mount Le Grand is the highest, reaching an altitude of 345 m. Other granitic domes are scattered irregularly about the plain to the north-east and east of Esperance. Many rounded depressions are scattered across the sandplain. They are of various sizes and fill with water during winter, but are usually dry during summer. There are few open lakes and most are grown over with vegetation. The water in depressions and lakes is gener- ally saline. In the southern part of the mallee the salt lakes are elongated in a general east-west direction and are incised several metres into the plain. In places they occur in dense clusters. Further inland, the lakes are more scattered and tend to be more circular. 4 References to soils of the Esperance advisory district Further reading Bury ill, G.H. and Tealde, L.J.H. (1938). The occurrence of solonetz Anon. (1988). Soils of south-western Australia. Ministry of Educa- (structural alkali) soils in Western Australia. Journal of the Depart- tion, Western Australia. Australia 15 (2nd Series): 97-109. ment of Agriculture, Western Bettenay, E. (1984). Origin and nature of the sandpiain, in "Kwongan, Burvill, G.H. (1988). The soils of the Salmon Gums district, Western plant life of the sandplain". pp. 51-68. University of Western Australia. Western Australian Department of Agriculture, Technical Australia Press. Bulletin No. 77. Carder, D.J. and Grasby, J.C. (1986). A framework for regional soil Northcote, K.H. (1979). A factual key for the recognition of Austral- conservation treatments in the medium and low rainfall districts. ian soils (4th Edition). Rellim Technical Publications Pty Ltd, Department of Agriculture, Western Australia. Research Report 1/ Adelaide, South Australia. 86. Northcote, K.H., Bettenay, E., Churchward, H.M. and McArthur, Clarke, E. de C. and Phillips, H.T. (1952). Physiographic and other W.M. (1967). Atlas of Australian soils. Explanatory data for sheet 5 notes on apart of the south coast of Western Australia. Journal of the CSIRO, Melbourne University Royal of Western Australia 37: 59-90. - Perth-Albany-Esperance area. Press, Society East Melbourne. McArthur, W.M. (1991). Western Australian reference soil sites. Overheu, T.D., Muller, P.G. and Gee, S.T. (1991). Esperance land Published by the Western Australian Department of Agriculture on resource survey. Land Resource Series No. 8. Western Australian behalf of the Australian Society of Soil Science (in press). Agriculture. Department of Northcote, K.H. et al. (1975). A description of Australian soils. Scholz, G.G.H. (1990). The soils of Mt. Beaumont land release areas, CSLRO, Australia. Stages 1 and 2. Land Resources Series No. 7. Western Australian Smith, R. (1952). The soils of the south Western Australian agricul- Department of Agriculture. tural region. D.Sc. Thesis, University of Western Australia. Smith, S.T. (1950). Soil survey of the Esperance Downs Research Teakle, L.J.H. (1938). A regional classification of the soils of Station. Unpublished report. Western Australian Department of Western Australia. Journal of the Royal Society of Western Australia Agriculture. 24: 123-195. Stace, H.T.C., Hubble, G.D., Brewer, R., Northcote, K.H., Sleeman, J.R., Mulcahy, M.J.
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