Crown gall disease of grapevine, caused by the bacterium Agrobacterium vitis, is a serious problem where grapes are grown in climatic conditions that favour freeze injury. Severely diseased vines usually exhibit significant reductions in yield and vigour, which predisposes them to winter kill. (http://www.omafra.gov.on.ca/english/crops/pub360/notes/grapecrgall.htm)
Acquired immunodeficiency is a complete or partial failure of the immune system after birth. This is a general term that describes a condition where the immune system becomes compromised. It doesn't specify the cause of the immunodeficiency. (Adapted from Humanitas Research Hospital, 2024. Acquired Immunodeficiency https://www.humanitas.net/diseases/acquired-immunodeficiency/ and AGROVOC Team.)
A concession is defined as the granting of a territory for its occupation and use. (Multilingual thesaurus on land tenure (English version) ISBN 92-5-104283-7 http://www.fao.org/3/a-x2038e.pdf)
Negative effect of non-living factors (e.g. extreme temperatures.) (FAO, 2016. Save and Grow in Practice: Maize, Rice, Wheat. A Guide to Sustainable Cereal Production http://www.fao.org/3/a-i4009e.pdf Cited 14 April 2023.)
Negative effect of living factors such as insects, fungi and bacteria. (Adapted from FAO, 2016. Save and Grow in Practice: Maize, Rice, Wheat. A Guide to Sustainable Cereal Production http://www.fao.org/3/a-i4009e.pdf Cited 14 April 2023.)
A quantitative measure of tree cover on an area, measured usually through an index based on the number of trees per unit area and diameter at breast height. (Grazing with trees – A silvopastoral approach to managing and restoring trees. FAO Forestry Paper, No. 187, FAO, 2022 (https://doi.org/10.4060/cc2280en).)
Radioecology is the scientific discipline focusing on how radioactive substances interact with nature, the mechanisms responsible for migration of such substances, and the uptake of radioactive substances in individuals, in the food chain that is composed of these individuals, and in ecosystems that are composed of the populations of these different species. (Radioecology (Møller, Mousseau 2019) DOI 10.1093/obo/9780199830060-0229)
The branch of toxicology which studies the toxic effects caused by natural substances or by artificial pollutants on living organisms whether animal or vegetable, terrestrial or aquatic, which constitute the biosphere. (Termium, 2001)
The major leaf fibre is from Agave lophantha and is known as Mexican fibre, istle or Tampico (named after the port from which it is exported). (Wickens, G.E. (2001). Economic Botany. In: Economic Botany. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0969-0_1)
