Cation Exchange Capacity (CEC) of Soil (Leaving Cert Agricultural Science): Flashcards

Soil's ability to hold positively charged nutrients (cations)

$\text{cmol}^{+}/\text{kg}$

Cell wall strength

Chlorophyll production

Water regulation

Higher clay content and higher organic matter

EDTA titration method

1-5 $\text{cmol}^{+}/\text{kg}$ (low nutrient holding capacity)

20 $\text{cmol}^{+}/\text{kg}$ (excellent nutrient retention)

Better nutrient retention, less leaching, stable fertility