Chapter 29

Distinguish among or between the following: macronutrients, micronutrients, and beneficial elements; A horizon, B horizon, and C horizon; necrosis and chlorosis; field capacity and permanent wilting percentage; ammonification, nitrification, and denitrification; symbiotic nitrogen-fixing bacteria and free-living nitrogen-fixing bacteria; determinate nodules and indeterminate nodules.

What attributes of loam soils help make them ideal agricultural soils?

Why is cation exchange important to plants?