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.

Soil pH is slightly acid in the A11 is neutral at 6.7 _h20 trending to moderately acid in the subsequent soil layers. The cation exchange capacity and this ability to hold nutrients is very low throughout the soil profile. The CEC of all the A horizons is very low ranging between 3.14 meq/100g to 3.92 meq/100g, and only 7.07 meq/100g in the B2 subsoil. This indicates the soil has very low ability to hold and supply nutrients to the tree. Despite the low CEC the organic carbon content of the A11 horizon is very high at 3.32 %, but only 0.46 to 1.32 % in the other A1 horizons. The soil profile is not saline and is not sodic. Potassium and phosphorous are noted to be very high in the three A1 horizons.