amaranth

(redirected from pigweed)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to pigweed: purslane

am·a·ranth

, amaranthum (am'ă-ranth, am-ă-ran'thŭm), [C.I. 16185]
An azo dye; a soluble reddish-brown powder that turns magenta red in solution; used as a food, pharmaceutical, and cosmetic coloring agent, and occasionally in histology.
[G. amaranthon, a never-fading flower]

am·a·ranth

(am'ă-ranth)
A weed (Amaranthus) of widespread geographic distribution; some species are consumed as a foodstuff; its prolific ability to produce seed allows its use as a flour. Purported value both internally and externally (e.g., astringent).
Synonym(s): love-lies-bleeding, red cockscomb.
[G. amaranthon, a never-fading flower]
References in periodicals archive ?
Interference between pigweed (Amaranthus spp.), barnyardgrass (Echinochloa crus-galli), and soybean (Glycine max).
But in another decade, he figures, pigweed will be resistant to that herbicide, too.
In general, chickens shun prickly plants, such as netdes, and they know better than to eat pokeweed, burdock, and pigweed, which can be poisonous if chickens eat enough of them.
Redroot pigweed is but one of many amaranths; others, such as Jacob's coat, are grown as ornamentals or for their nutritious seeds.
For those who doubt that immortality is possible in the natural order of things, Gene Logsdon, an Ohio farmer who has done a lot of hard hoeing and hard thinking in his eighty years, nominates chickweed and pigweed as plausible candidates for the Great Forever After.
Two important hosts of this insect include cultivated cotton, Gossypium hirsutum L., and pigweed Amaranthus spp.
Allelopathic effects of rye, brown mustard and hairy vetch on redroot pigweed, common lamb squarter and knotweed.
"With only a limited amount of time between rains, making timely herbicide applications has been difficult, especially in areas where producers are battling resistant pigweed."
The following were the different biomass samples tested: Bermuda Grass, Centipede Grass, Corn Leaves, Crabgrass, Fescue Grass, Johnson Grass, Pigweed, Spurge Weed, and Zoysia Grass.
By 2002, crops like pigweed, ragweed and horseweed developed herbicide tolerance as well.
The following weeds were found: Amaranthus deflexus (pigweed), Amaranthus spinosus (spiny amaranth), Amaranthus viridis (slender amaranth), Cyperus spp.
in which weed seeds listed as Digiteria Ciliaris(D.C.)-common grass, Chenopodium album(C.A.)-common pigweed and Nicotiana tabacum(N.T.)-tobacco.