Visual Soil Assessment (VSA) Field Guide

The VSA Field Guide contains all the information necessary to cary out VSA on your land. The Guide is self-explanatory and its use does not require special training or technical skills. While the Field Guide contains a wealth of information about soil quality and its fundamental importance to sustainable resource management, the information is expressed in a simple and concise way, and will provide a useful educational tool.

Good Condition VS=2 Moderate Condition VS=1 Poor Condition VS=0 The VSA Field Guide contains many easy-to-use comparison pictures like these that allow the Visual Score of an indicator, in this case soil structure and consistence under cropping, to be assessed.
Good Condition VS=2
Good distribution of friable finer aggregates with no significant clodding.
Moderate Condition VS=1
Soil contains significant proportions of both coarse firm clods and friable, fine aggregates.
Poor Condition VS=0
Soil dominated by extremely coarse, very firm clods with very few finer aggregates.

 

Availability.

A separate publication Soil Management Guidelines for Sustainable Cropping (available from Manaaki Whenua Press) uses the same techniques as a basis for sustainable cropping management.

The VSA guides were produced with the co-operation of Horizons Regional Council, Hawke's Bay Regional Council, Ministry for the Environment, Wellington Regional Council, and Landcare Research.