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Agronomy is the science and technology of producing and using plants by agriculture for food, fuel, fiber, chemicals, recreation, or land conservation.Agronomy has come to include research of plant genetics, plant physiology, meteorology, and soil science.
There was an increase in global production of primary crops by 56% between 2000 and 2022 to 9.6 billion tonnes, which represents a 0.7% compared to 2021. [2] This represents 3.5 billion tonnes more than in 2000. [2] Cereals represented the main group of crops produced in 2022, followed by sugar crops (23%), vegetables (12%) and oil crops (12%).
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ISBN 0-13-651589-4. Species estimates and counts: International Union for Conservation of Nature and Natural Resources (IUCN) Species Survival Commission (2004). IUCN Red List The IUCN Red List of Threatened Species. Prance, G. T. (2001). "Discovering the Plant World". Taxon. 50 (2, Golden Jubilee Part 4): 345– 359. doi:10.2307/1223885. JSTOR ...
[2] In 1843, John Bennet Lawes and Joseph Henry Gilbert began a set of long-term field experiments at Rothamsted Research in England, some of which are still running as of 2018. [3] [4] [5] In the United States, a scientific revolution in agriculture began with the Hatch Act of 1887, which used the term "agricultural science".
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These include: O 2 and CO 2 (mainly from the air via leaves) and H 2 O, NO − 3, H 2 PO − 4 and SO 2− 4 (mainly from the soil water via roots). Plants produce oxygen gas (O 2) along with glucose during photosynthesis but then require O 2 to undergo aerobic cellular respiration and break down this glucose to produce ATP.
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