Agriculture

Items

• abomasum

  The fourth stomach of a ruminant, which receives food from the omasum and passes it to the small intestine.
• absorption

  The uptake of water, other fluids, or dissolved chemicals by a cell or an organism (as tree roots absorb dissolved nutrients in soil)
• agricultural product

  Agricultural product means livestock and plants that are produced for commercial purposes and includes any agricultural, horticultural, or aquacultural produce or crop; the raising of livestock, poultry, bees, or fur-bearing animals
• agricultural science

  Sciences dealing with food and fibre production and processing. They include the technologies of soil cultivation, crop cultivation and harvesting, animal production, and the processing of plant and animal products for human consumption and use.
• abiotic

  Non-living basic elements of the environment such as rainfall, temperature, wind, and minerals.
• acacia

  A tree or shrub of warm climates which bears spikes or clusters of yellow or white flowers and is typically thorny.
• acid

  A chemical that gives off hydrogen ions in water and forms salts by combining with certain metals.
• acid rain

  Atmospheric precipitation with pH values less than about 5.6, the acidity being due to inorganic acids (such as nitric and sulfuric) that are formed when oxides of nitrogen and sulfur are emitted into the atmosphere.
• acid soil

  A soil with a pH value <7.0. Usually applied to surface layers or root zone but may be used to characterize any horizon.
• acne

  A skin condition that occurs when your hair follicles become plugged with oil and dead skin cells.
• ad lib

  Occurring, used, or distributed as often as necessary or desired.
• ad valorem

  The Latin phrase ad valorem means according to value.
• adhesion

  Molecular attraction that holds the surfaces of two substances (e.g. water and sand particles) in contact.
• adsorption

  The attraction of ions or compounds to the surface of a solid. Soil colloids adsorb large amounts of ion and water.
• advanced ratio

  The advance ratio is the ratio of the freestream fluid speed to the propeller, rotor, or cyclorotor tip speed.
• adventitious root / fibrous root / bushy root(n)

  An adventitious root is a root that arises from any point other than the radicle or the root axis of a plant.
• aerobic

  Having molecular oxygen as part of the environment. Growing only in the presence of molecular oxygen, such as aerobic organisms.
• afforestation

  The artificial establishment of a forest or plantation by planting or sowing on land on which such vegetation has not previously, or recently grown.
• aggregate

  Many soil particles held in a single mass or cluster, such as a clod, crumb, block or prism.
• agistment

  Historically, it also referred to the proceeds of pasturage in the king's forest in England. It can mean either the contract for taking in feeding horses or cattle on pastureland, or profit derived from such pasturing. In modern usage, it refers to the practice of taking on other people's livestock to graze.
• agriculture

  The science and art of utilizing the soil; including the gathering in of the crops and the rearing of livestock; farming.
• agroforestry

  Any type of multiple cropping land-use that entails complementary relations between trees and agricultural crops.
• agronomy

  A specialization of agriculture concerned with theory and practice of field crop production and soil management. The scientific management of land.
• al

  A suffix with the general sense “of the kind of, pertaining to, having a form or character of” that is named by the stem, occurring in Loanwords from Latin.
• alfalfa

  A valuable leguminous crop for forage or hay used in livestock. Animal Unit.