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Visual indicators of soil condition
Pasture growthIn the paddock1 quiz
Indicator 1 - dark green patches1 quiz
Indicator 2 - yellowing pastures1 quiz
Indicator 3 - grass dominant pasture1 quiz
Indicator 4 - stock camps1 quiz
Indicator 5 - reduced summer growth1 quiz
Indicator 6 - lucerne stunting1 quiz
Sub-Clover and Legume NodulationPlants and pastures
Indicator 7 - small, dark green leaves1 quiz
Indicator 8 - bronzing of sub-clover1 quiz
Indicator 9 - stunted sub-clover plants1 quiz
Indicator 10 - few or white nodules1 quiz
Soil CharacteristicsSoil surface and clover roots
Indicator 11 - soil surface1 quiz
Indicator 12 - soil disturbance1 quiz
Weeds as Indicators of Soil ConditionHigh fertility indicators1 quiz
Low fertility indicators1 quiz
Item 11 of 17
Indicator 9 – stunted sub-clover plants
What do you see and when?
- Stunted sub-clover plants, usually pale green in colour
- Seen in autumn and winter.
What could this indicate?
- Soil acidity and associated high soil aluminium
- Soil borne diseases
- Caused by four main pathogens (Phytophthora, Pythium, Aphanomyces, Rhizoctonia).
What test can I do to confirm?
- Soil test, with reference to pH and aluminium.
- Test strips with lime. Note, lime responses are often not seen in the first year, especially if lime is not incorporated.
- Inspect roots. Hostile soil conditions will result in stunted roots with less fine roots.
- Diseased roots are commonly yellow in colour with reduced or pruned branches and may also have brown/ black lesions.
- Test strips of foliar fungicide such as Phosphorus acid.
- Predicta B to identify pathogen presence.
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