Parameter Tree:
EARTH SCIENCE > AGRICULTURE > AGRICULTURAL PLANT SCIENCE > CROP/PLANT YIELDS

Definition:
The quantity of plant materials resulting from cultivation or growth.
Includes all comercial crops, as well as plant biomass yields (i.e. amount
of grass produced per unit land in natural agroecosystems (e.g.
rangeland)). Does not include PRODUCT yield (e.g. bushels of wheat vs.
lbs. flour). 


Reference:
Adapted from: Herren, R.V., and R.L. Donahue. 1991. The Agriculture
Dictionary, Delmar Publishers INC. Albany, New york. 553pp.