OTR414

Steep hills on Red Johanna Road		Site Code	OTR414	Melacic, Mesotrophic, Black Dermosol
		Location	Johanna (Junction of Red Johanna Road and Great Ocean Road)
		Landform	Hills
		Geology	Cretaceous sediments
		Element	Upper slope - ridge
		Slope	4%
		Aspect	South-east
Horizon	Depth (cm)	Description
A1	0–13	Very dark brown (10YR2/2); loam; moderate subangular blocky structure; clear boundary to:
A3	13–45	Very dark brown (10YR2/2); clay loam; moderate to strong angular blocky structure; diffuse boundary to:
B2	45–90	Very dark greyish brown (10YR3/2); heavy clay; moderate coarse (40 mm) angular blocky structure; diffuse boundary to:
C	90+	Yellowish brown (10YR5/8) and grey (10YR6/1) mottled medium clay, apedal massive structure.
Management considerations
The gradational (earths) or medium textured soils (loams) nature of the soil profiles are often preferred due to their low physical limitations, but remains dependent on any chemical or depth restrictions. The friable nature of the soil occurs where there is a build up of organic matter. Acidic soil horizons reflects the high rainfall and can restrict the uptake of certain nutrients as well as intolerance for some plant species (due in part to the increasing mobilisation of aluminium and manganese). Deficiencies of calcium, potassium and molybdenum are likely.

Analytical data

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