weed


Also found in: Dictionary, Thesaurus, Legal, Acronyms, Idioms, Encyclopedia, Wikipedia.

weed

See cannabis.

weed

Drug slang Marijuana, see there.

weed

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.

weed

1. a plant growing out of place.
2. of horses, see sporadic lymphangitis.

noxious weed (1)
a plant defined by law as being particularly undesirable, invasive and difficult to control.

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.

More discussions about weed
References in periodicals archive ?
He urged the students, faculty, researchers, farmers and extension members to come forward for weed management and adopt measures for weed eradication.
For the control of the weeds, we have to study phenology, flowering and fruiting periods, general dispersal of the weed and change the crop pattern e.
Among the weed management treatment, application of pendimethalinfb bispyribac recorded significantly the highest number of effective tillers [m.
tabaci population on each weed species was recorded once a week on 10 randomly selected plants per sub-plot.
Surface mulches deprive weed seeds of light and increase their natural predation by providing habitat for crickets, ground beetles, and other seedeaters.
Herbicides are used for weed control in modern agriculture because they are highly effective against most weed species (Harker and Donovan, 2013).
To spot treat an area, thoroughly wet the weed foliage with herbicide solution.
Continuous use of the same herbicides, especially at lower rates, may encourage weed resistance over time.
Keywords: Crop growth rate; Cultural practices; Rice direct seeding; Dry matter; Weed competition duration; Weed biomass
Some operations that utilize a 'zero weed seed' philosophy have successfully reduced weed pressure in subsequent vegetable crops by eliminating weed seed inputs to the soil seedbank.
Number of beans in pods was only affected in weed-infested conditions and dry weight of weed was meaningful in weed-infested conditions.
He said weeds reduce crops produce by 40 to 45 percent which is great loss to farmers .