Cobar (1978)

Holding Library Call Number
NSW Soil Knowledge Network
Holding Library
Soil Conservation Service of NSW
Notes
This document is provided for general information or historical interest and may contain some information that is no longer accurate or up to date or does not represent current best practice. Readers are warned not to rely on this information alone, and should obtain their own advice before making any decisions.

Contents

SOIL CONSERVATION SERVICE OF NEW SOUTH WALES 1
SOIL CONSERVATION SERVICE OF NEW SOUTH WALES 3
CONTENTS 5 , 4 , 6 , 7
1. INTRODUCTION 9
2. GEOLOGY 10 , 11 , 12 , 14 , 15 , 16
3. TOPOGRAPHY 3.1 General 18
4. CLIMATE 4.1 Introduction 19
4.2 Rainfall 19 , 20 , 22 , 23
4.3 Evaporation 23
4.4 Temperature and Relative Humidity 23
4.5 Climate and Plant Growth 23 , 24
4.6 Climate and Erosion 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32
5. SOILS 5.1 Introduction 33
5.2 Lithosols (Mountain Areas) 33 , 34 , 35
5.3 Lithosols and Red Earths (Cobar Pediplain) 35 , 36 , 37 , 38 , 39 , 40
5.5 Solonized Brown Soils and Calcareous Red Earths 40 , 41 , 42 , 43
5.6 Grey Clay Soils of the Darling River Floodplain 43 , 44 , 45
5.7 Heavy Grey Clay Soils around Willandra Billabong 45
5.8 Desert Loams 45 , 46
5.9 Soil Properties and Design Criteria 46 , 47
6. VEGETATION 49
6.1 White Gum (Eucalyptus dealbata) – Ironbark (Eucalyptus sideroxylon) Association. 49
6.2 Bimble Box (Eucalyptus populnea), White Pine (Callitris columellaris) Association) 49 , 50
6.3 Bimble Box (Eucalyptus populnea), Ironwood-Mulga (Acacia spp.) Association 50
6.4 Acacia – Eremophila Association 51
6.5 Mulga (Acacia aneura) Association 51 , 52
6.6 Mallee (Eucalyptus oleosa – Eucalyptus dumosa) Association 52 , 53
6.7 Belah (Casuarina cristata) – Rosewood (Heterodendrum oleifolium) Association 53
6.8 Coolabah (Eucalyptus microtheca) Association 54
6.9 Mitchell grass (Astrebla lappacea) Association 54 , 55
6.10 Bluebush (Kochia pyramidata – Kochia sedifolia) Association 55
6.11 Saltbush (Atriplex vesicaria) Association 55
6.12 Black Box (Eucalyptus largiflorens) Association 55 , 56
7. LAND USE 58 , 59
8. EROSION 8.1 General 61 , 62 , 63 , 64
9. GENERAL SOIL CONSERVATION PRACTICES 66 , 67
10. WESTERN LANDS LEASE MANAGEMENT PLANNING 10.1 Development of Western Lands Lease Management Plans 68 , 69 , 70 , 71 , 72
10.2 Procedures 72 , 73 , 74 , 75 , 76
11. DESIGN OF STRUCTURES 11.1 Rate of Runoff 78 , 79 , 80 , 81 , 82 , 84 , 85 , 86 , 87 , 88
11.2 Banks on Arable and Grazing Land 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 , 123 , 124 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132
11.3 Waterways 132 , 133
11.4 Gully Control Structures 133 , 134 , 135 , 136 , 137 , 138 , 139 , 140 , 141 , 142 , 143
11.5 Grass Flumes 143 , 144 , 145
12. AGRONOMIC RECOMMENDATIONS 146
12.1 Improved Pastures 146
12.2 Winter Forage Crops 146 , 147
12.3 Summer Forage Crops 147
13. REFERENCES 148 , 149 , 150
ACKNOWLEDGEMENT 150

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