Nutrition

Soil Nutrient Mapping

Site Specific Technology involves the use of GPS equipment, soil sampling, analysis and map generation using a Geographical Information Software (GIS) package.

After completing a paddock/block boundary, soil sampling is then done on a grid basis (ranging from .04ha to 6ha) and the results from each grid sample are used to generate nutrient maps. See below examples

Resource nutrient layers can be created in existing paddocks or blocks to ensure accurate fertiliser recommendations. Elements tested for include pH, EC, OC, Nitrate N, Chloride, Sulfate S, Colwell P, Ex Cations (Ca, Mg, Na, K, Al), CEC, Zn, Mn, Cu, Fe, B.

These soil maps are ideal for identifying and rectifying nutrient problems in a particular zone or area whilst optimising fertiliser and associated application costs. Site specific soil testing is particularly effective when developing new land.

Sampling can be done on 6, 4, 2, 1 and 0.5 hectare grids. It is recommended that smaller grids be used when testing a small amount of area that is used for intensive cropping ie horticulture.


   
  

   Example of NO3-N (nitrogen)

Example of pH (CaCI2)

 See Analytical Information for more information on nutrition.