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 (pĭk′lə-răm′, pī′klə-)
A colorless compound, C6H3Cl3N2O2, used as a herbicide.

[pic(oline) + (ch)lor(o)- + am(ine).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Agriculture) a type of herbicide used to control woody plants and weeds
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
O objetivo deste trabalho foi avaliar a eficacia no controle da brotacao de tocos de teca, imediatamente apos o desbaste e das rebrotas de tocos de arvores desbastadas no ano anterior, com a aplicacao isolada ou combinada de diferentes concentracoes de picloram e triclopyr, associada ou nao a confeccao de danos fisicos aos tocos.
Close ME, Pang L, Watt JPC, Vincent KW, Naidu RT (1998) Leaching of picloram, atrazine and simazine through two New Zealand soils.
Key words: Agent Orange, cacodylic acid, defoliants, 2,4-dichlorophenoxy acetic acid, exposure opportunity, geographic information system, GIS, herbicides, military, picloram, 2,4,5-trichlorophenoxy acetic acid, Vietnam.
On a 15 by 15 m site, a selected group of pesticides (atrazine, diazinon, picloram, simazine), along with bromide, lithium, and fluorescein as tracers, were applied.
Concentrations of 2,4-D and picloram 136 times higher than those found in the commercial formulation were required to inhibit mitochondria when the surfactant was removed from the experiment.
Ammonium salts were able to counteract this antagonism (Wanamarta et al., 1993) and were able to increase leaf absorption of picloram (4-amino-3,5, 6-trichloro-2-pyridinecarboxylicacid) (Moxness and Lym, 1989).
Paternally mediated reproductive toxicity of a picloram and 2,4-D combination herbicide has been suggested in mice (24).
Pesticides were applied in November 1997: atrazine, terbuthylazine, procymidone, and hexazinone were applied to Site A; and 2,4-D, picloram, and triclopyr to Site B.
Atrazine, hexazinone, procymidone, and terbuthylazine were applied to Site A (area 15 by 15 m), and 2,4-D, picloram, and triclopyr were applied to Site B (5 by 15 m) iii November 1997.
Close ME, Pang L, Watt JPC, Vincent KW (1998) Leaching of picloram, atrazine, and simazine through two New Zealand soils.
Picloram, atrazine, simazine, and bromide were applied to 2 sites, a Twyford fine sandy loam and a Te Awa silt loam, located in Hawkes Bay, New Zealand, and monitored at approximately monthly intervals using suction cup samplers for 1200 and 800 days, respectively.