OBJECTIVE FORESTRY

Detailed explanation-1: -Sandy soils have rather large particles and large pore spaces (macro pores). Clay soils have very tiny particles with very small pore spaces (micro pores), but because there are many times more pore spaces, clay soils have greater total pore space than sandy soils.

Detailed explanation-2: -Sand is the largest mineral particle and it has more pore space between its particles than silt or clay.

Detailed explanation-3: -Pores come in all sizes, although clays have predominantly small pores, and sands have large pores. Most soils are a mixture of sand, silt and clay particles, so there is a mixture of different sized soil pores (Figure 2.7). Figure 2.7.

Detailed explanation-4: -Clay has the highest total porosity.

Detailed explanation-5: -Starting with the finest, clay particles are smaller than 0.002 mm in diameter. Some clay particles are so small that ordinary microscopes do not show them. Silt particles are from 0.002 to 0.05 mm in diameter. Sand ranges from 0.05 to 2.0 mm.