REPRODUCTIVE ORGAN OF SPERMATOPHYTES WHERE GAMETOPHYTE DEVELOPMENT, I.E. FERTILISATION AND SEED DEVELOPMENT, TAKES PLACE.

MATERIAL THAT CREATES, RECONSTITUTES CONSERVES OR INCREASES SOIL FERTILITY. A DISTINCTION IS MADE BETWEEN MANURE (ORGANIC FERTILISER), CHEMICAL FERTILISERS, SOIL AMENDMENTS OR CONDITIONERS AND PH ADJUSTERS DEPENDING ON HOW THEY IMPROVE THE SOIL.

PRACTICE OF APPLYING FERTILISER THROUGH THE WATER IN AN IRRIGATION SYSTEM.

COMBINATION OF PHYSICAL, CHEMICAL AND BIOLOGICAL CHARACTERISTICS THAT MAKES AGRICULTURAL LAND FIT FOR GROWING CROPS.

QUANTITY OF WATER (RELATIVE TO A UNIT OF TIME) RELEASED INTO THE AIR FROM THE GROUND IN A VAPOUR STATE THROUGH THE COMBINED EFFECT OF TRANSPIRATION THROUGH PLANTS AND EVAPORATION OF WATER FROM THE GROUND. OFTEN CALLED ET FOR SHORT.

CONVERSION OF A LIQUID TO THE VAPOUR STATE.

Phenomenon where agents such as wind, water or ice, or gravity or living organisms (bioerosion) gradually break down and carry away soil or rock.

See herbicide; weed killer