chemical weed and pest killers

См. также в других словарях:

• 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

• spraying and dusting — Standard methods of applying pest control chemicals and other compounds to plants, animals, soils, or agricultural products. For spraying, chemicals are dissolved or suspended in water or, less commonly, in an oil based carrier. The mixture is… …   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

• 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

• cereal farming — Introduction  growing (plant) of cereal crops for human food and livestock feed, as well as for other uses, including industrial starch.       Cereals, or grains, are members of the grass family cultivated primarily for their starchy seeds… …   Universalium