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International Livestock Centre for Africa: An organization established in 1974 at Addis Ababa, Ethiopia. Abbr ILCA. Provides research and resources for livestock farmers in Africa.

internode: The part of a plant stem between two adjacent nodes. Helps farmers understand plant growth and pruning techniques.

infertile: 1. Referring to any organism that is not able to reproduce or produce offspring. 2. Referring to trees and plants that are not able to produce fruit or seeds. 3. Referring to soil that is not able to produce good crops. Helps farmers manage breeding and soil fertility.

International Wool Secretariat: A group which represents countries which export wool. Abbr IWS. Helps wool farmers with market support and research.

intensive agriculture: A method of farming in which as much use is made of the land as possible by growing crops close together, growing several crops in a year or using large amounts of fertilizer. Opposite extensive agriculture. Also called productive agriculture. Helps farmers maximize land use efficiency.

in-field: Formerly, the field nearest the farmstead, regularly manured and cultivated. In-fields are still preserved on some hill farms. Helps farmers manage land use and cultivation practices.

inbred: Resulting from inbreeding. Helps farmers understand the genetic implications of breeding practices.

in-lay: A period when a hen is laying eggs. Helps farmers manage poultry production cycles.

indigo: A tropical plant of the pea family which is a source of blue dye. Genus: Indigofera. Helps farmers grow crops for natural dyes.

immunity: 1. The natural or acquired ability of a person or other animal to resist a microorganism and the disease it causes. The vaccine gives immunity to tuberculosis. 2. The ability of a plant to resist disease through a protective covering on leaves, through the formation of protoplasts or through the development of inactive forms of viruses. Knowledge of immunity helps farmers protect crops and livestock from diseases.