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Illuvial Horizon-
A soil horizon that has received solution or suspension from the horizons above. A layer of accumulation. Contrast with eluviation.
Indigenous-
Native to an area. e.g. Indigenous plants and animals.
Integrated Pest Management-
A combination of management techniques to control pests such as chemical spraying, using resistant palnt varieties, tillage, crop rotations etc.
Integrated Resource Management (IRM)-
Multidisciplinary approach to managing cattle more efficiently and
profitably; management decisions are based on how all resources are
affected.
Inoculation-
Process of introducing cultures of bacteria into soils, seeds etc. Adding Rhizobia culture to a legume seed such as alfalfa.
Iodine-
A mineral added to salt to prevent a goiter, an iodine-deficiency
condition.
Ions-
Atoms or groups of atoms that are electrically charged as a result of the loss (cation) or gain of electrons (anion).
Iron-
Mineral added to foods to help prevent anemia and other
iron-deficiency diseases.
Irradiated-
Having been subjected to ionising radiation e.g. gamma rays.
Irrigation-
Manner in which water is artificially applied to crop land. e.g Sprinkler irrigation - water is sprayed over the soil surface using a pressurized system.
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