Amaranthus retroflexus L., A. powellii S. Wats. Abstracts of the 23rd Weed Science Society of America Conference, 23:61. Sauer JD, 1955. Journe^acute~es internationales sur la lutte contre les mauvaises herbes, Reims, France, 6-8 de^acute~cembre 1995. Weaver SE, McWilliams EL, 1980. Torres MB, Kommers GD, Dantas AFM, Lombardo de Barros CS, 1997. Memoirs of the botanical survey of South Africa No 53. Revision of the dioecious amaranths. Weed scientific name and common classification Weed Family Genus Species Common name A. smartweed Polygonaceae Polygonum penslyvanicum buckwheat B. wormwood Asteraceae Artemisia biennis composite ... Redroot pigweed Amaranthaceae Amaranthus retroflexus amaranth Sunflower Asteraceae Helianthus annuus composite 2:52. Plant Physiology, 61:590-592. Please consider upgrading your browser to the latest version or installing a new browser. 324-325. Emergence pattern of five weeds in the central Great Plains. 71 (2), 275-285. http://www.journals.cup.org/action/displayJournal?jid=EJB DOI:10.1017/S0960428614000110. 366. More information about modern web browsers can be found at http://browsehappy.com/. Digestible energy and protein content of some annual weeds, alfalfa, bromegrass, and tame oats. Scientific Names: Redroot pigweed, Amaranthus retroflexus L., Green pigweed, Amaranthus powelli S. The leaves are nearly 15 cm (5.9 in) long on large individuals, the ones higher on the stem having a lance shape and those lower on the plant diamond or oval in shape. AM, 1996. Weeds, 5:46-55. Selected Weeds of the United States. and A. hybridus L. Canadian Journal of Plant Science. Search Google Appliance Enter the terms you wish to search for. Stems erect, 10 cm - 2 m high, but usually 50 - 90 cm, simple or branched, lower part thick and smooth, upper part usually rough with dense short hair, greenish to slightly reddish but usually red near the roots. Scientific Name; Family Name; Contact . Alien plants at Foynes Port, Co. Canadian Journal of Plant Science, 73(4):1249-1260. Recent data from the flora of the island of Limnos (NE Aegean, Greece): new alien invasive species affecting the agricultural economy of the island. Weed emergence from two soils at various moistures, temperatures and depths. H8), 1988-1994. Communication 1. Stevens O, 1957. Weed Science. Leaves: Lower leaves are oval and upper leaves are … Virginia Journal of Science, 41(3):243-245. BioOne . University of Washington, Seattle. Redroot Pigweed has a noticeably shorter, thicker and compacted inflorescence, that only extends a short distance above the first branches of the panicle. Brenan JPM, 1961. TAXONOMY: The currently accepted scientific name of rough pig-weed is Amaranthus retroflexus L. It is a member of the Pigweed Family (Amaranthaceae). Selected Weeds of the United States. Tashmatov Kh M, 1992. Wats., Other Names: Redroot pigweed is also called amarante à racine rouge, Green amaranth, Pigweed, Redroot, Rough pigweed, Tall pigweed, amarante réfléchie, amarante pied rouge. USDA, 1970. Wells M J, Balsinhas A A, Joffe H, Engelbrecht V M, Harding G, Stirton C H, 1986. 21 (3), 283-285. Veterinary and Human Toxicology, 39(2):94-96; 33 ref. Scientific names are more precise, as each species has just one valid scientific name at any one time. Rough pigweed has a taproot that can grow 3.9 to 95 inc… Feeding in the pigweed flea beetle, Disonycha glabrata Fab. [9], A. retroflexus is a weed and has developed resistance against fomesafen in Northeast China. 10 (4), 744-749. Wesche-Ebeling P, Maiti R, García-Díaz G, González DI, Sosa-Alvarado F, 1995. It thrives in open, sunny places inhabiting agricultural land … 130-132. HortScience. Ladonin V F, Kramarev S M, Klyavzo S P, Golovko A I, Kovalenko V D, Bondar' V P, Lerinets F A, 1994. Vancouver, Canada: Greengrass. McLachlan SM, Murphy SD, Tollenaar M, Weise SF, Swanton CJ, 1995. Redroot pigweed, a summer annual broadleaf plant, is found up to 7900 feet (2400 m) in the Central Valley, northwestern region, central-western region, southwestern region, Modoc Plateau, and most likely in other California areas. ABBREVIATION : AMARET SYNONYMS : NO-ENTRY SCS PLANT CODE : AMRE COMMON NAMES : rough pigweed redroot pigweed redroot amaranth green amaranth pigweed wild beet pigweed amaranth canne red-root pigweed careless weed TAXONOMY : The currently accepted scientific name of rough pigweed is Amaranthus retroflexus L. [11,14,18,20]. Southwestern Entomologist, 15(1):27-31, Tisler AM, 1990. Good control effects of glyphosate on weeds in late growth period maize in the field interplanted with wheat. Agrokhimiya. Volume 1. Collingwood, Vic. Another of A. retroflexus's common names is "pigweed" because it grows where hogs are pasture-fed. Redroot pigweed (Amaranthus retroflexus) Redroot pigweed is characterized by it's red tap root (usually present at the seedling stage of development), from which the plant gets it's name. Weeds, 15:118-121. Journal of Applied Ecology, 32(1):157-165. This weed is a common cause of late-summer allergies. Economic Botany, 49(4):423-430; 32 ref. Maigre D, 1991. After four or five years, though, only about 10% of the initial population will be capable of emergence. Wats., Scientific Names: Redroot pigweed, Amaranthus retroflexus L., Green pigweed, Amaranthus powelli S. Seeds of redroot pigweed, wild mustard, shepherd's-purse, and field pepperweed often have seed coats impermeable to water, oxygen, or both.The seeds are called “hard.” It is another dormancy mechanism. Terry LI, Lee CW, 1990. [6], Like many other species of Amaranthus, this plant may be harmful and even deadly when fed to cattle and pigs in large amounts over several days. Wallingford, UK: CABI. Cambridge, UK: Cambridge University Press. The Latin, or scientific name, of each pigweed includes the genus name Amaranthus; each respective species name differentiates among the genus members. It has several common names, including carelessweed, dioecious amaranth, Palmer's amaranth, Palmer amaranth, and Palmer's pigweed.It is native to most of the southern half of North America. In areas where their distributions overlap, it is not uncommon to find both species growing together in the same field. Seizie^grave~me confe^acute~rence du COLUMA. This plant is eaten as a vegetable in different places of the world. Infestation of cultivated Amaranthus by the weevil Conotrachelus seniculus in southeastern Arizona. Phytoindication of hydrogenous and haloid landscapes interrelations in Uzbekistan. Reading Time: 2 minutes Redroot pigweed can be a tough customer. Basic information: Scientific name: Amaranthus retroflexus: Click to magnify. The stem of the pigweed is what makes this plant so distinctive. Mitchell J, Rook A, 1979. Limerick (v.c. Habit. Tashmatov KhM, 1992. The seeds are edible raw or toasted, and can be ground into flour and used for bread, hot cereal, or as a thickener. Zhao SZ, 1992. E & S Livingstone 1962, "Amaranthus retroflexus | Redroot Pigweed | Male Finger", https://en.wikipedia.org/w/index.php?title=Amaranthus_retroflexus&oldid=990095228, Pages using Tropicos template without author names, Short description is different from Wikidata, Articles with Chinese-language sources (zh), Creative Commons Attribution-ShareAlike License, This page was last edited on 22 November 2020, at 19:58. A catalogue of problem plants in South Africa. Pigweed is an annual leafy green that can refer to a number of wild weedy plants.The most commonly found pigweed varieties in the culinary world are redroot pigweed (Amaranthus retroflexus) and simply pigweed, or bathua in Hindi, a vegetable widely used in Northern Indian dishes.. redroot pigweed rough pigweed This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. A catalogue of problem plants in southern Africa incorporating the national weed list of South Africa. “Just tell yourself you are not going t… Waterhemp belongs to the botanical Amaranth family, which also features other pigweed species found in North Dakota and Minnesota, including redroot pigweed, Powell pigweed and smooth pigweed. CABI, Undated. A. retroflexus was used for a multitude of food and medicinal purposes by many Native American groups. Genetics, 25:409-431. Temperature- and moisture-dependent models of seed germination and shoot elongation in green and redroot pigweed (Amaranthus powellii, A. retroflexus). (Coleoptera: Chrysomelidae), on Amaranthus retroflexus. Murray MJ, 1940. That’s low compared to many weeds. Availability and efficacy of atrazine in acid soils: the Ticino case. Holm L G, Pancho J V, Herberger J P, Plucknett D L, 1991. Palmer amaranth (A. palmeri) 5. spiny amaranth (A. spinosus) 6. tumble pigweed (A. albus) 7. prostrate pigweed (A. blitoides) 8. waterhemp (A. tuberculatus = A. rudis) These heat-loving summer annuals emerge after the spring frost date, grow rapidly, compet… Allergy (Copenhagen), 50(6):489-497; [20 pl. Washington DC, USA: United States Department of Agriculture, 324-325. Tome 1., 411-417; 5 ref. Robert L. Zimdahl, in Fundamentals of Weed Science (Fifth Edition), 2018. In: Watsonia, 4 261-280. Plants are erect and usually around 3-4' in height, although they can grow larger. The biology of Canadian weeds. H8), 1988-1994. Such forage may cause fatal nephrotoxicity,[7] presumably because of its high oxalate content. HortScience, 25(10):1260-1262. Other symptoms, such as bloat or methylglobineamia in the most severe cases, might reflect its high nitrate content. (Disponibilité et efficacité de l'atrazine en sol acide: le cas du Tessin.). Scientific name: Amaranthus retroflexus Family: Amaranthaceae Description: Redroot pigweed grows into a 2- to 6-foot tall plant during the heat of summer. Weed Herbarium – by Scientific Name. Propagation of Pacific Northwest Plants . The plant is monoecious, with individuals bearing both male and female flowers. Oryokot JOE, Murphy SD, Thomas AG, Swanton CJ, 1997. Amaranthus palmeri is a species of edible flowering plant in the amaranth genus. Handle the task when plants are less than 3 inches tall, with roots still short, to prevent accidentally uprooting neighboring garden plants. Weed Technology, 11(2):308-317; 22 ref. v + 658pp. Zhao S Z, 1992. 15 (1), 27-31. Australia: CSIRO Publishing. Powell amaranth (A. powelii) 4. DOI:10.1046/j.1365-3180.1997.d01-15.x. Watsonia. Weed Science, 45(4):488-496; 2 pp. Amaranth is a herbaceous plant or shrub that is either annual or perennial across the genus. Characterization of Chenopodiales (Amaranthus retroflexus, Chenopodium album, Kochia scoparia, Salsola pestifer) pollen allergens. This is an erect, annual herb reaching a maximum height near 3 m (9.8 ft). Weights of seeds and numbers per plant. The alternate leaves are ovate with wavy margins. Baliousis E, 2014. CABI is a registered EU trademark. Competition between barnyard grass (Echinochloa crus-galli) and red-root pigweed (Amaranthus retroflexus). Amaranthus retroflexus, true to one of its common names, forms a tumbleweed. In: Agriculture Handbook No. Wiese A, Davis R, 1967. Stems are erect, and can grow anywhere from 10 cm - 2 m high, but usually 50 - 90 cm, simple or branched, lower part thick and smooth, upper part usually rough with dense short hair, greenish to slightly reddish but usually red near the roots. [8] However, when supplied in moderation, it is regarded as an exceptionally nutritious fodder. Nuss R, Loewus FA, 1978. The seed of Redroot Pigweed are the first of the three pigweeds to mature. of common waterhemp, redroot pigweed, smooth pigweed, Powell amaranth, and Palmer amaranth, including U.S. distribution, seedling and adult descriptions, technical characters, management schemes, and pertinent notes. germination and growth of redroot pigweed (Amaranthus retroflexus), Palmer amaranth (A. palmeri), and common water hemp (A. rudis).” Weed Science 51 (2003): 869-75. Categories. [Proceedings, 12th Asian-Pacific Weed Science Society Conference. The leaves are hairy on the lower surface, along the prominent veins. Changes in the weed species composition of the southern United States: 1974 to 1995. Tremmel DC, Patterson DT, 1993. The fruit is a capsule less than 2 mm (0.079 in) long with a "lid" which opens to reveal a tiny black seed. Problems of Desert Development. Amaranthus retroflexus is a species of flowering plant in the family Amaranthaceae with several common names, including red-root amaranth, redroot pigweed, red-rooted pigweed, common amaranth, pigweed amaranth, and common tumbleweed.[3]. There are no pictures available for this datasheet, Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. ], Taipei, Taiwan: Asian-Pacific Weed Science Society. Phytocoenological features and control strategies of weeds. Leaves are 0.8 to 3.9 inches long. Dose response of weeds to methyl iodide and methyl bromide. Psilotaceae to Platanaceae, Volume 1 (2nd edition) [ed. A geographic atlas of world weeds. Common names: Redroot pigweed, Carelessweed, Redroot Amaranth: Higher taxon Amaranthus in Britain. Weed Technology. Lazarides M, Cowley K, Hohnen P, 1997. Phytoindication of hydrogenous and haloid landscapes interrelations in Uzbekistan. Aellen P, Akeroyd JR, 1993. redroot pigweed. Stevens C, Khan VA, Okoronkwo T, Tang AH, Wilson MA, Lu J, Brown JE, 1990. The biology of Canadian weeds. Memoirs, Botanical Survey of South Africa. Plants - Forbs/Herbs. This erect summer annual can be found flowering from July through October. Annals of the Missouri Botanic Garden, 54:103-137. Weed Science Society of America. Responses of soybean and five weeds to CO2 enrichment under two temperature regimes. Effectiveness of the utilization of different herbicides in maize crops. Common Name Reference: Weed Science Society of America Common Names List Scientific Name Reference: PLANTS Database. 60 (4), 1215-1234. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. Amaranthus retroflexus L., A. powellii S. Wats. Soil solarization and control of amaranth (Amaranthus retroflexus): heat resistance of the seeds. Reynolds S C P, 1996. #3. CABI Compendium: Status as determined by CABI editor. Virtually every farmer in North America knows and grapples with pigweed, a term that covers several species in the genus Amaranthus, including: 1. redroot pigweed (A. retroflexus) 2. smooth pigweed (A. hybridus) 3. Top of page A. retroflexus is thought to be a native riverbank pioneer of the central and … At first glance, this would not appear to be a soft underbelly since single pigweed plants can produce 300,000 seeds or more. A plant’s species name can be spelled out in Latin (its scientific name, e.g., Amaranthus retroflexus) or in plain English (its common name, e.g., redroot pigweed). Weed Research (Oxford), 37(3):181-189; 30 ref. Anderson R L, Nielsen D C, 1996. Soil solarization and Dacthal: influence on weeds, growth, and root microflora of collards. Weed Research (Oxford). Siriwardana T, Zimdahl R, 1983. 52. Watsonia, 21(3):283-285; 12 ref. But don’t wallow in despair – control is possible. ]; 16 ref. Agriculture Handbook No. Redroot pigweed (Amaranthus retroflexus). Amaranthus L. In: Flora Europaea. vii + 264 pp. The genetics of sex determination in the family Amaranthaceae. The inflorescence is a large, dense cluster of flowers interspersed with spiny green bracts. 23 (3), 167-171. Scientific Name Amaranthus retroflexus ← → Other Common Names: careless weed. [10], Media related to Amaranthus retroflexus (category) at Wikimedia Commons, Watt, John Mitchell; Breyer-Brandwijk, Maria Gerdina: The Medicinal and Poisonous Plants of Southern and Eastern Africa 2nd ed Pub. [5] It is among the species consumed as a vegetable in Mexican markets as Quelite quintonil. Weed Technology, 11(1):199-202; 35 ref. Malabar, Florida, USA: Krieger Publishing Co. 391 pp. Zhang W M, McGiffen M E Jr, Becker J O, Ohr H D, Sims J J, Kallenbach R L, 1997. rough pigweed. CONFIRMATION STATUS: Pending confirmation. Burgos N R, Talbert R E, 1996. Common Name(s): Redroot Pigweed, Rough Pigweed, Pigweed,Redroot: Scientific Name: Amaranthus retroflexus: Family: Amaranthaceae: Longevity: Annual: Season: rugosa) response in a no-till system with cover crops. 80-86. Terminal (leaf) node. Characteristics of the behaviour of herbicides of the maize complex with different methods of application on normal chernozems of the Ukraine steppe. Infestation of cultivated Amaranthus by the weevil Conotrachelus seniculus in southeastern Arizona. Other common names for redroot pigweed include redroot amaranth, careless weed, and rough pigweed. 73-78. Wells MJ, Balsinhas AA, Joffe H, Engelbrecht VM, Harding G, Stirton CH, 1986. There are often additional dense clusters of flowers in the axils of upper leaves. Good control effects of glyphosate on weeds in late growth period maize in the field interplanted with wheat. No species of genus Amaranthus is known to be poisonous,[4] but the leaves contain oxalic acid and may contain nitrates if grown in nitrate-rich soils, so the water should be discarded after boiling. Redroot pigweed (Amaranthus retroflexus), a common garden invader, has a long rosy taproot that pulls easily from moist soil. Other Common Names: redroot amaranth, careless weed, Pigweed, red-root amaranth, rough pigweed. Dose response of weeds to methyl iodide and methyl bromide. Tests have shown that over 50% of waterhemp seeds remain viable after one year. Revue Suisse d'Agriculture. 366, Washington DC, USA: United States Department of Agriculture. References. by Tutin TG, Burges NA, Chater AO, Edmondson JR, Heywood VH, Moore DM, Valentine DH, Walters SM, Webb DA]. Reynolds SCP, 1996. 51-54. Zhang WM, McGiffen MEJr, Becker JO, Ohr HD, Sims JJ, Kallenbach RL, 1997. Edinburgh Journal of Botany. CSIRO handbook of Australian weeds. Limerick (v.c. Rose, Robin, Chachulski, and Haase. Moyer JR, Hironaka R, 1993. Soil solarization and Dacthal: influence on weeds, growth, and root microflora of collards. and A. hybridus L. Canadian Journal of Plant Science, 60(4):1215-1234. 44 (2), 355-361. 44. Terry L I, Lee C W, 1990. The fruit is a utricle. 44. Madrono, 13:5-46. Plant Protection. top “They are relatively short-lived in the soil,” Bradley says. Chen T B, Lin C, 1989. Pretoria, South Africa: Botanical Research Institute. Webster TM, Coble HD, 1997. Amaranthus retroflexus is a species of flowering plant in the family Amaranthaceae with several common names, including red-root amaranth, redroot pigweed, red-rooted pigweed, common amaranth, pigweed amaranth, and common tumbleweed. Redroot pigweed (Amaranthus retroflexus) poisoning of cattle in southern Brazil. Leaves. Mitich LW, 1997. The Latin, or scientific name, of each pigweed includes the genus name Amaranthus; each respective species name differentiates among the genus members.