Science · Soils
Chalk
Soft carbonate-rich geological material often producing alkaline soils; overlying soil properties vary.
Calcareous parent material
Profile
- Chemistry
- Dominated by calcium carbonate
- Depth
- Shallow soils may restrict root storage
- Nutrition
- High pH can reduce iron and manganese availability
- Drainage
- Fractures and soil depth govern flow
Water & soil targets
- Moisture (VWC)
- Site-calibrated; measure field capacity and dry-down
- Salinity tolerance
- Not determined by this label; measure EC and relevant ions
- Drought tolerance
- Depends on usable storage, rooting depth and vegetation
Measure retention, infiltration and layer depths in place. Texture or construction labels do not define a universal irrigation threshold.
Problems to watch
- Micronutrient deficiency
- Shallow-soil drought
- Erosion
Stress signs
- Interveinal chlorosis
- Rapid wilt
- Exposed pale substrate
Where you'll find it
- Calcareous landscape planning
- Soil amendment assessment
More soils
All Science profilesGeneral agronomic guidance and typical ranges; actual targets vary by site, soil, climate and season.