A chemical or treated fertilizer.

A hard white solid formed from a paste of water and partly dehydrated gypsum, used for making sculptures and casts and for immobilizing broken…

Agriculture and Horticulture. A fertilizer consisting chiefly of calcium dihydrogen phosphate (Ca(H2PO4)2), typically prepared by treating phosphate…

A nitrate (sense 1a) used as a fertilizer; esp. potassium, sodium, or ammonium nitrate.

In singular or occasionally plural = superphosphate, n. 2.

A proprietary name for: a fertilizer consisting of a culture of nitrogen-fixing bacteria obtained from the root nodules of leguminous plants.

a fertilizer containing the chief plant nutrients, phosphoric acid, nitrogen, and potash; also elliptical.

a fertilizer consisting wholly or chiefly of calcium cyanamide.

(a proprietary name for) a fertilizer consisting of a mixture of ammonium nitrate and calcium carbonate (chalk).

A proprietary term for preparations of ethylenediamine tetra-acetic acid and its salts used as sequestering agents; spec. one containing…

A proprietary name of various mixtures of polyacrylate salts and other carboxylated polymers manufactured as soil conditioners for improving the…