Agriculture

Items

• alkali

  Any substance capable of furnishing the hydroxyl ion (OH) to its solution or other substances / a substance having marked basic properties in contrast to acid. The most important alkali metals in soil are sodium and potassium.
• alkaline soil

  Any soil that has a pH >7. Usually applied to the surface later or root zone but may be used to characterize any horizon or a sample thereof.
• allelopathy

  The process by which one plant may affect other plants by biologically active chemicals introduced into the soil, either directly by leaching or exudation from the source plant, or as a result of the decay of plant residues. The effects, though usually negative, may also be positive.
• alluvial

  Unconsolidated materials deposited in close proximity to streams and rivers through the agency of running water.
• alluvial soil

  A soil developing from recently deposited alluvium and exhibiting essentially no horizon development.
• aloe

  A succulent plant with a rosette of thick tapering leaves and bell-shaped or tubular flowers on long stems, native to the Old World.
• alternative agriculture

  Alternative agriculture essentially refers to agricultural systems that differ from conventional farming techniques that can be energy and resource exhausting.
• amendment

  Any substance other than fertilisers, such as lime, sulfur, gypsum, sawdust, used to alter the chemical or physical properties of a soil, generally to make it more productive.
• anaemia

  Deficiency of healthy red blood cells in blood. Red blood cells (RBCs) are essential to carry oxygen to all parts of the body. Fatigue, unexplained weaknesses are some of the common symptoms.
• anatomy

  Anatomy is the identification and description of the structures of living things.
• anemone

  A plant of the buttercup family which typically has brightly coloured flowers and deeply divided leaves.
• angler

  Is a person who catches fish with a rod and a fishing line.
• anhydrous

  The meaning of anhydrous is free from water and especially water of crystallization.
• animal

  A living organism that feeds on organic matter, typically having specialized sense organs and nervous system and able to respond rapidly to stimuli.
• animal food

  Refers to food given to domesticated livestock such as coe, horses, poultry, etc.
• animal manure

  The excreta of animals, with or without the admixture of bedding or litter, in varying stages of decomposition, e.g. stable manure, barnyard manure, kraal manure.
• animal skin

  The skin is the outermost protective covering of an organism.
• anion

  Negatively charged ion, during electrolysis it is attracted to the positively charged anode.
• anoestrus

  Applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus.
• ant

  A small insect typically having a sting and living in a complex social colony with one or more breeding queens.
• ant –termite

  Termites are small, pale insects that superficially resemble ants.
• anthill

  A mound of debris thrown up by ants or termites in digging their nest.
• antelope

  A swift-running deerlike ruminant with smooth hair and upward-pointing horns, of a group native to Africa and Asia that includes the gazelles, impala, gnus, and elands.
• anthelmintic

  Any drug that acts against infections caused by parasitic worms (helminths).
• anther

  Anther, in flowering plants, the part of a stamen that produces and contains pollen.