weed-killers

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• Weed — /weed/, n. Thurlow /therr loh/, 1797 1882, U.S. journalist and politician. * * * Any plant growing where it is not wanted. On land under cultivation, weeds compete with crops for water, light, and nutrients. On rangelands and in pastures, weeds… …   Universalium

• Weed control — is the botanical component of pest control, stopping weeds from reaching a mature stage of growth when they could be harmful to domesticated plants and livestock by physical and chemical methods. In order to reduce weed growth, many weed control… …   Wikipedia

• weed — weed1 weedless, adj. weedlike, adj. /weed/, n. 1. a valueless plant growing wild, esp. one that grows on cultivated ground to the exclusion or injury of the desired crop. 2. any undesirable or troublesome plant, esp. one that grows profusely… …   Universalium

• herbicide — herbicidal, adj. /herr beuh suyd , err /, n. a substance or preparation for killing plants, esp. weeds. [1895 1900; HERB + I + CIDE] * * * Agent, usually chemical, for killing or inhibiting the growth of unwanted plants (weeds). Modern weed… …   Universalium

• vegetable farming — Introduction       growing of vegetable crops, primarily for use as human food.       The term vegetable in its broadest sense refers to any kind of plant life or plant product; in the narrower sense, as used in this article, however, it refers… …   Universalium

• Mount Henry Peninsula — This article is about the peninsula in Australia. For the mountain in Glacier National Park, see Mount Henry (Montana). Mount Henry Peninsula Location Perth, Western Australia …   Wikipedia

• chlorophenol — /klawr euh fee nawl, nol, klohr /, n. Chem. 1. any of three isomers having the formula C6H5ClO, derived from chlorine and phenol, used chiefly as intermediates in the manufacture of dyes. 2. any derivative of phenol of which one or more hydrogen… …   Universalium

• arsenic trioxide — noun a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer • Syn: ↑arsenic, ↑arsenous anhydride, ↑arsenous oxide, ↑white arsenic, ↑ratsbane • Derivationally related forms:… …   Useful english dictionary

• Mecoprop — Mecoprop[1] …   Wikipedia

• sugarcane — /shoog euhr kayn /, n. a tall grass, Saccharum officinarum, of tropical and warm regions, having a stout, jointed stalk, and constituting the chief source of sugar. Also, sugarcane. [1560 70; SUGAR + CANE] * * * Giant, thick, perennial grass… …   Universalium

• arsenic trioxide — ar·se·nic trioxide .ärs nik , ən ik n a poisonous trioxide As2O3 or As4O6 of arsenic that was formerly used in medicine and dentistry but has been abandoned for therapeutic purposes and is now used esp. as an insecticide and weed killer called… …   Medical dictionary