Chemical compound composed of nitrogen and hydrogen (NH4). Component of the nitrogen cycle. Product of organic matter decomposition. Can be fixed to clay minerals and later exchanged.

A form of nitrogen that is commonly found in the soil.

A plant-available form of nitrogen contained in many fertilizers and generated in the soil by the breakdown of organic matter. See nitrogen cycle.

NH4+. Derived from ammonia by combination with a hydrogen ion. A nitrogen compound taken up by plants from soils.

(n) the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion

Chemical compound composed of nitrogen and hydrogen (NH4). Component of the nitrogen cycle. Product of organic matter decomposition. Can be fixed to clay minerals and later exchanged.

<chemistry> A compound radical, NH4, having the chemical relations of a strongly basic element like the alkali metals. See: Ammonia. (01 Mar 1998)

A plant-available form of nitrogen contained in many fertilizers and generated in the soil by the breakdown of organic matter. See nitrogen cycle.

This form of nitrogen can be used by plants, or converted to nitrate by bacteria (and then taken up by plants). It is a positively charged ion (cation), attracted to negatively charged soil clay. For [..]