CFTT19

Site: Stradbroke	Location: APP species/seedlot trial VRV148
Aust. Soil Class.: Humosesquic, Aeric PODOSOL	Great Soil Group: podsol
Tech. Class: 022-2-43/1-2-3-12	General Landscape Description: Longitudinal dunefield.
Site Description: 6 % slope to south east	Geology: Pleistocene aeolian sediments
APP Mapping Unit: Gormandale

Soil Profile Morphology:

Surface Soil

A1	0 – 25 cm	Very dark greyish brown (10YR3/2) loamy sand; single grained; very weak consistence moist; clear and smooth transition to:	Site CFTT19 Soil Profile
A21	25 – 60 cm	Light grey (10YR6/1) sand; single grained; loose dry; diffuse and smooth transition to:
A22	60 – 115 cm	White (10YR8/1) sand; single grained; loose dry; sharp and wavy transition to:
Subsoil
Bhs	115 – 150 cm	Dark reddish brown (5YR2.5/2), many very coarse prominent yellowish red (5YR5/8) mottles, sand; with continuous tongues of weakly cemented and massive “coffee rock”; gradual and wavy transition to:
C	150 – 180 cm	Dark reddish brown (5YR3/3), many very coarse, prominent yellowish red (5YR5/8) mottles; sand; single grained; many ferruginous nodules (less than 60 mm).

Key Profile Features:

• Very thick subsurface (A2) horizons
• Accumulation of iron-organic matter compounds (ie. ‘coffee rock’) in subsoil.

• Plant Available Water Capacity (PAWC) is low for sandy soils such as these. The soils are, however, well drained.
• These strongly acidic sandy soils have a very low nutrient holding capacity and are considered infertile – being naturally deficient in nitrogen, phosphorus, sulphur and potassium. Nitrate and sulphate are readily removed by leaching. Deficiencies of trace elements such as copper, zinc and molybdenum are likely to occur. The trace element boron (B) leaches rapidly through acid sandy soils and deficiencies are also likely to occur.

• Good example of Gormandale Sand soil type. No samples taken