Soil sampling and chemical analysis

  1. Define field areas to be sampled separately;
  2. Selection of appropriate sampling method according to the topographic features of the field, the soil differences and the crops grown. / Terrain data is taken from a 3D model and spectral analysis of the soil made with DronŠµ/;
  1. Chemical analysis of the sampled soil measures values of 14 indicators within, which are the following:


Exchangeable cationic capacity (meq / 100g)


Exchange capacity of cation ion-exchange (meq/100g)

K/Potassium (ppm)

P/Phosphorus (ppm)

S/Sulfur (ppm)

Zn/Zinc (ppm)

Na/Sodium (ppm)

Fe/Iron (ppm)

Mo/Molybdenum (ppm)

Cu/Copper (ppm)

B/Boron (ppm)

Mn/Manganese (ppm)

Mg/Magnesium (ppm)

Ca/ Calcium (ppm)

  1. Chemical analysis results are used for:
    • Annual farm management plan;
    • Defining proper fertilizer micronutrients and macronutrients, including their quantity ratio based on the soil needs;
    • Estimating of fertilizer application rate in the different sampled zones;
    • Execution of variable rate application (VRA) prescription map for fertilization;
    • GIS analyses. Field data measurements can be compared such as vegetation measurement (NDVI), chemical results from leaf samples, yield measurements and others.