An M.Sc (Agri) Soil Science thesis — grid sampling, standard lab methods, nutrient index and kriged maps in R and QGIS
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- Handheld GPS / GNSS receiver
- Soil-sampling protocol (0–15 cm, grid-based)
- pH & EC meters, spectrophotometer, flame photometer, AAS, Kjeldahl distillation
- R — gstat, sp/sf, ggplot2
- +3