Soil Chemistry Overview

This data reflects both the natural elemental composition at the site and the historical influence of nutrient management. Some soil properties such as organic carbon indicate overall soil health, whilst other such as Sodicity, Aluminium and salinity may indicate constraints to root growth and soil water extraction. Comparison between sites of the same soil type will help better understand the difference between these two influencing factors. High or low levels of some nutrients may indicate that some changes in nutrient management may be necessary and we suggest that you contact your local agronomist for their recommendations.

The A1 horizons are neutral at 7.0 _h20 to 7.1 _h20, neutral in the A21 horizon at 6.9 _h20, before trending to moderately acid at 5.7 _h20 in the B2 horizon. Organic carbon in the A11 and A12 horizons is high at 2.50 % and 1.89 % respectively. The cation exchange capacity is very low throughout soil profile, ranging from 4.01 meq/100g in the A11 horizon to 1.56 meq/100g in the A21 horizon. This indicates the soil has very limited ability to retain and supply nutrients and fertilizer. The soil profile is not saline. The A21 horizon is noted to be sodic having an ESP of 6.41 % which is likely to have contributed to the high density in the A2 horizons.