Lowest layer of the atmosphere, bounded by the Earth beneath and the stratosphere above, with its upper boundary being the tropopause, about 10-13 km above the Earth's surface. (http://termportal.fao.org/faoterm/main/start.do)
Inorganic or organic salts and esters of boric acid. (National Library of Medicine. MeSH (Medical Subject Headings). Borates. https://www.ncbi.nlm.nih.gov/mesh/68001881)
Thin tubular outgrowth of pollen grain usually upon contact with stigma, and which penetrates style to ovary, permitting sperm nuclei to unite with egg cell. (The pollination of cultivated plants: a compendium for practitioners, FAO, 2018)
An insect growth regulator that inhibits production of chitin in the integument of insects and other arthropods. (Gordh and Headrick 2001. In IAEA. 2006. SIT-Glossary https://nucleus-qa.iaea.org/sites/naipc/twd/Pages/SIT-Glossary.aspx)
A class of persistent, broad-spectrum insecticides that linger in the environment and accumulate in the food chain. Among them are DDT, aldrin, dieldrin, heptachlor, chlordane, lindane, endrin, mirex, hexachloride, and toxaphene. In insects and other animals these compounds act primarily on the central nervous system. They also become concentrated in the fats of organisms and thus tend to produce fatty infiltration of the heart and fatty degeneration of the liver in vertebrates. In fishes they have the effect of preventing oxygen uptake, causing suffocation. They are also known to slow the rate of photosynthesis in plants. (GEMET. 2025. chlorinated hydrocarbon http://www.eionet.europa.eu/gemet/concept/1368)
A nutritionally adequate feed for a specific animal in a specific physiological state. It is compounded to be fed as the sole diet without any additional substances apart from water. (RAMIRAN Glossary of terms on livestock and manure management 2011)
Product obtained from a single or a mixture of citrus fruits and brought to a suitable consistency. It may be made from one or more of the following ingredients: whole fruit or fruit pieces, which may have all or part of the peel removed, fruit pulp, puree, juice, aqueous extracts and peel and is mixed with foodstuffs with sweetening properties, with or without the addition of water. (Adapted from FAO & WHO. 2022. Standard for Jams, Jellies and Marmalades Codex Standard, No. CXS 296-2009. Rome. https://www.fao.org/fao-who-codexalimentarius)
