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Drug slang Marijuana, see there.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.


any plant that competes for resources with a plant of importance to man and which is therefore regarded as a nuisance. Weeds usually have a high VIABILITY and can use up disproportionate amounts of water, sunlight and nutrients. Where the weed is of a different plant type from the crop plant (e.g. the weed might be a DICOTYLEDON, such as ragwort, the crop a MONOCOTYLEDON such as wheat) selective HERBICIDES are available which are effective against only broad-leaved plants.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Patient discussion about weed

Q. is smoking weed bad for me? what can it do to me if it so?

A. all illegal drugs are bad,weed can cause memory loss,low sex drive,dependency,etc.it also causes family problems,and its ILLEGAL.

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References in periodicals archive ?
Most weeds are prolific seeders, spreading hundreds if not thousands of seeds that keep gardeners weeding for years and years to come.
Similarly, the conventional weeding practice for sesame in the study area is weeding twice before flowering and once after flowering (optional) but not during flowering.
Among the weed management treatment, application of pendimethalinfb bispyribac recorded significantly the highest number of effective tillers [m.sup.-1] (55.40), grain yield (4290 kg [ha.sup.-1]) and straw yield (5750 kg [ha.sup.-1]), biological yield (10040 kg ha' 1) and harvest index (42.71%) as compared to Sesbania co-culture + residue incorporation, Sesbania co-culture fb 2, 4-D and pretilachlor fb hand weeding at 30 DAS and it was at par with the application of pendimethalin fb hand weeding at 30 DAS and pretilachlorfb bispyribac, respectively.
Keywords: Bemisia tabaci, Population, Dicotyledonous weeds, Monocotyledonous weeds, weeding.
But when we asked Mother's Facebook followers which weeding tool they couldn't do without, the sturdy weeding knife, often called a "hori-hori" (See Page 58), was the clear winner.
Have a selection of tools to make weeding easier - hoes for borders, a knife for paving and a sprayer for paths.
Hand weeding was carried out to keep the weed-free treatments weed free.
Mousavi [9] stated that weeding leads to 9.2% increase of production of dried materials of lentil.
Hand weeding can be soothing to the soul, especially when you take your time to enjoy the sights and sounds of nature.
Experiment was laid out in RCBD with five weed management strategies: hand weeding, hoeing with kasula, inter-row cultivation with tine cultivator, inter-row cultivation with spike hoe and chemical control with Nominee 100 SC along with control (no weeding).
Defenceless in the face of this annual aerial bombardment, I am now resigned to limiting the damage by spraying and hand weeding. The trouble with either is that the removal of a broadleaved weed leaves a hole in the lawn, which the surrounding grass is supposed to cover before the space is re-colonised by weeds.
* Reduced production costs per acre versus mechanical weed control or hand weeding.