Agency Code: 501 Project Code: REF Site Code: GTN05 Described by: W Macarthur Date: //

Observation type: Unknown Category: Lab Analyses: Detailed chemical and physical analyses.

Location: MGA94 Zone: 50 327434 mE 6827221 mN Location notes: Eradu Nature Reserve (Conservation of Land Management) adjacent to Geraldton-Mullewa Rd, 200 m from southern boundary and 75 m from western boundary. Site notes: Landform/topography: Upland sandplain remnant; Drainage: external - nil.

Landform Landform pattern: sand plain Relief/modal slope: Landform element: Morphological type: flat Pattern Relief: sand plain

Surface and Hydrological Properties Rock outcrop: Surface coarse fragments: Physical properties: cryptogam surface

Geology/parent material Soil parent material: Jurassic sediments - sandstones and shales.

Vegetation Notes: Mallee heath.

Species List : arenarius, sceptrum Tall : Eucalyptus jucunda Medium Shrubs: Allocasuarina campestris, Calothamnus blepharospermus, bucculenta, Hakea circumalata, occidentale Low Shrubs: Chamelaucium sp., Choretrum pritzelii, Calothamnus quadrifidus, didymobotrya, Ground: Conostylis sp., Drosera sp., Mesomelaena stygia, Neurachne sp., Stylidium sp.

Current Classification WA Soil Group: (1999) Brown deep sand Australian Soil Classification: (2002) Basic Regolithic Yellow-Orthic Tenosol, A thickness medium, A gravels non-gravelly, A texture sandy, B texture clayey, Soil Depth deep ASC confidence: very high Soil Series: Eradu Map Unit: 220Er_1

Other Classifications World Ref Base: (1998) Eutric Arenosol FAO soil unit: Eutric Regosol Great Soil Group: Siliceous sand Northcote PPF: Uc5.11

Soil Profile Description

Horizon Depth (cm) Description A11 0-5 Yellowish brown (10YR 5/5 moist) sand; loose consistence; apedal, single grain structure; notes: thin algal crust; clear boundary. A12 5-10 Yellowish brown (10YR 5/6 moist) sand; loose consistence; apedal, single grain structure; gradual boundary. A13 10-20 Yellowish brown (10YR 5/8 moist) loamy sand; very weak dry consistence; sandy fabric; gradual boundary. B11 20-40 Yellowish brown (10YR 5/8 moist) mixed with brownish yellow (10YR 6/8 moist) loamy sand; very weak dry consistence; sandy fabric; gradual boundary. B12 40-80 Brownish yellow (10YR 6/8 moist) loamy sand; very weak dry consistence; sandy fabric; diffuse boundary. B13 80-110 Brownish yellow (10YR 6/8 moist) loamy sand; very weak dry consistence; sandy fabric; notes: Brownish yellow (10yr 6/9).

Lab Results (501 REF GTN05)

Basic Chemistry

Sample Horizon Match Depth pH_w pH_CaCl EC OC_wb N_kjel P_kjel P_HCO3 K_HCO3 2 A 1 A 0-5 6 5.1 1 0.44 0.02 29 2 22 B 2 A 5-10 6.2 5.3 1 0.29 0.01 24 <2 16 C 3 A 10-20 6 5.1 1 0.21 0.01 17 <2 10 D 4 A 20-40 6.3 5.4 1 0.16 0.01 17 <2 <10 E 5 A 40-80 6.5 5.8 1 0.1 0.01 17 <2 <10 F 6 A 80-110 6.2 5.8 1 0.07 0.01 17 <2 <10

Exchangeable Cations

Sample Horizon Match Depth CEC Exch_Ca Exch_Na Exch_K Exch_Mg Sum_Exc ESP CaMgR_ Exch_cats Base_stat h Exch % A 1 A 0-5 2 0.9 <0.1 <0.1 0.3 1.3 (1) 4 (3) 3 (1) 65 (2) 18.57 (2) B 2 A 5-10 1 0.7 <0.1 <0.1 0.3 1.1 (1) 5 (3) 2.33 (1) 110 (2) 15.71 (2) C 3 A 10-20 2 0.7 <0.1 0.1 0.3 1.15 (1) 4 (3) 2.33 (1) 58 (2) 12.78 (2) D 4 A 20-40 1 0.6 <0.1 <0.1 0.3 1 (1) 5 (3) 2 (1) 100 (2) 9.09 (2) E 5 A 40-80 1 0.7 <0.1 <0.1 0.4 1.2 (1) 4 (3) 1.75 (1) 120 (2) 9.23 (2) F 6 A 80-110 1 0.5 <0.1 <0.1 0.4 1 (1) 5 (3) 1.25 (1) 100 (2) 9.09 (2)

Particle Size Analysis

Sample Horizon Match Depth s200_200 sand s20_200u silt clay 0u A 1 A 0-5 77 90 (2) 13 3 7 B 2 A 5-10 83 91 (2) 8 2 7 C 3 A 10-20 76 89 (2) 13 2 9 D 4 A 20-40 72 87 (2) 15 2 11 E 5 A 40-80 65 85 (2) 20 2 13 F 6 A 80-110 72 87 (2) 15 2 11