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agrochemical

 
Dictionary: ag·ro·chem·i·cal   (ăg'rə-kĕm'ĭ-kəl) pronunciation also ag·ri·chem·i·cal
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(ăg'rĭ-)
n.
A chemical, such as a fertilizer, hormone, fungicide, insecticide or soil treatment, that improves the production of crops.


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Britannica Concise Encyclopedia: agrochemical
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Any chemical used in agriculture, including chemical fertilizers, herbicides, and insecticides. Most are mixtures of two or more chemicals; active ingredients provide the desired effects, and inert ingredients stabilize or preserve the active ingredients or aid in application. Together with other technological advances, including tractors, mechanical harvesters, and irrigation pumps, agrochemicals have increased the per-acre productivity of regions such as the Great Plains by 200 – 300% since the 1930s. Their long-term effects on the environment and the stability of agricultural systems that use them are hotly debated.

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Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.  Read more
Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved.  Read more