Agency Code: 501 Project Code: REF Site Code: MER01 Described by: Henry Smolinski Date: 01/01/1987 Observation type: Unknown Category: Lab Analyses: Detailed chemical and physical analyses. Location: MGA94 Zone: 50 665241 mE 6508349 mN Elevation (m): 430 Location notes: 38 km east of Merredin. In property owned by K & S Clayton, Burracoppin. Opposite to main gate into Research Station (Department of Agriculture). 560 m south of junction of Antonio and Della Roads. 40 m west of Della Road. Site notes: Bettenay & Hingston (1961). Very gently undulating terrain; Drainage: external - nil.N.B. 1. Concretions appear to be hardened mottles.2. Many sand grains rounded and frosted.3. Occasinal pale (10YR7/2) mottles throughout profile. Surface and Hydrological Properties Rock outcrop: Surface coarse fragments: Physical properties: rapid profile permeability Geology/parent material Soil parent material: Siliceous residue from weathered granite; possibly redistributed by win Vegetation Notes: Kwongan. Species List Tree: Acacia fragilis, Hakea coriacea, Santalum acuminatum Tall Shrubs: Eucalyptus burracoppinensis Medium Shrubs: Acacia sp., Allocasuarina acutivalvis, Hakea erecta, Hakea falcata, Isopogon scabriusculus, Melaleuca subfalcata, Petalostylis species Low Shrubs: Astroloma serratifolium, Baeckea crispiflora, Hibbertia species, Melaleuca conothamnoides, Melaleuca platycalyx, Micromyrtus sp., Phebalium tuberculosum Ground: Patersonia sp. Current Classification WA Soil Group: (1999) Acid yellow sandy earth Australian Soil Classification: (2002) Acidic Dystrophic Yellow Kandosol, A thickness thin, A gravels non-gravelly, A texture sandy, B texture clay loamy, Soil Depth very deep ASC confidence: very high Soil Series: Nangeenan Map Unit: 258Ta_1 Other Classifications World Ref Base: (1998) Xanthic Ferralsol FAO soil unit: Xanthic Ferralsol Great Soil Group: Yellow earth Northcote PPF: Gn2.21 Soil Profile Description Horizon Depth (cm) Description A1 0-6 Yellowish brown (10YR 5/6 moist) loamy sand; weak dry consistence; smooth-ped fabric; pedal, moderate structure; notes: porous; slight organic stain in surface; gradual boundary. B11 6-25 Yellowish brown (10YR 5/8 moist) sandy loam; weak dry consistence; earthy fabric; pedal, moderate structure; 1% quartz fine gravel sized coarse fragments; notes: porous; gradual boundary. B12 25-50 Brownish yellow (10YR 6/8 moist) sandy loam; weak dry consistence; earthy fabric; pedal, moderate structure; few segregations hard; notes: porous; gradual boundary. B21 50-90 Brownish yellow (10YR 6/8 moist) sandy clay loam; weak dry consistence; earthy fabric; pedal, moderate structure; few ferruginous segregations 3 -10 mm; notes: porous; gradual boundary. B22 90-150 Brownish yellow (10YR 6/8 moist) sandy clay loam; weak dry consistence; earthy fabric; 5% ferruginous concretions; notes: porous; gradual boundary. 150-185 Brownish yellow (10YR 6/8 moist) sandy clay loam; weak dry consistence; earthy fabric; pedal, moderate structure; 5% ferruginous concretions; notes: porous; gradual boundary. 185-210+ Brownish yellow (10YR 6/8 moist) sandy clay loam; weak consistence; earthy fabric; pedal, moderate structure; 20% ferruginous concretions; notes: porous. Lab Results (501 REF MER01) 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 0-6 5.5 4.7 5 0.64 0.03 26 <2 38 B 2 A 6-25 4.7 4.2 2 0.3 0.02 20 <2 13 C 3 A 25-50 4.6 4 2 <2 <10 D 4 A 50-90 4.5 4 2 <2 <10 E 5 A 90-150 4.3 4.1 32 <2 <10 F 6 A 150-185 4.3 4.1 44 <2 <10 G 7 A 185-210 4.4 4.2 53 <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 0-6 2 0.8 0.1 0.1 0.3 1.3 (1) 8 (3) 2.67 (1) 65 (2) 10.83 (2) D 4 A 50-90 2 0.1 <0.1 <0.1 0.4 0.6 (1) 8 (3) 0.25 (1) 30 (2) 2.31 (2) G 7 A 185-210 1 0.2 0.7 <0.1 1.8 2.75 (1) 25 (3) 0.11 (1) 275 (2) 10.19 (2) Particle Size Analysis Sample Horizon Match Depth s200_200 sand s20_200u silt clay 0u A 1 A 0-6 65 83 (2) 18 5 12 D 4 A 50-90 46 69 (2) 23 5 26 G 7 A 185-210 37 66 (2) 29 7 27 .