Tremmel DC, Patterson DT, 1993. Zhang WM, McGiffen MEJr, Becker JO, Ohr HD, Sims JJ, Kallenbach RL, 1997. Rough pigweed has a taproot that can grow 3.9 to 95 inc… ], Taipei, Taiwan: Asian-Pacific Weed Science Society. Phytoindication of hydrogenous and haloid landscapes interrelations in Uzbekistan. 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. Holm L G, Pancho J V, Herberger J P, Plucknett D L, 1991. Memoirs, Botanical Survey of South Africa. Chen T B, Lin C, 1989. Stevens C, Khan V A, Okoronkwo T, Tang A H, Wilson M A, Lu J, Brown J E, 1990. Revue Suisse d'Agriculture. Watsonia, 21(3):283-285; 12 ref. Zhao S Z, 1992. Torres MB, Kommers GD, Dantas AFM, Lombardo de Barros CS, 1997. The fruit is a capsule less than 2 mm (0.079 in) long with a "lid" which opens to reveal a tiny black seed. and A. hybridus L. Canadian Journal of Plant Science. (Coleoptera: Chrysomelidae), on Amaranthus retroflexus. Weed control and sweet corn (Zea mays var. University of Washington, Seattle. Australia: CSIRO Publishing. Scientific names are more precise, as each species has just one valid scientific name at any one time. 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. Soil solarization and Dacthal: influence on weeds, growth, and root microflora of collards. There are often additional dense clusters of flowers in the axils of upper leaves. H8), 1988-1994. Tests have shown that over 50% of waterhemp seeds remain viable after one year. Such forage may cause fatal nephrotoxicity,[7] presumably because of its high oxalate content. Tashmatov KhM, 1992. Watsonia. Good control effects of glyphosate on weeds in late growth period maize in the field interplanted with wheat. Mitich LW, 1997. AM, 1996. Plant Protection, No. Habit. Canadian Journal of Plant Science, 73(4):1249-1260. Nuss R, Loewus FA, 1978. Don't delay hand-pulling pigweed seedlings. Ladonin V F, Kramarev S M, Klyavzo S P, Golovko A I, Kovalenko V D, Bondar' V P, Lerinets F A, 1994. Reynolds S C P, 1996. At first glance, this would not appear to be a soft underbelly since single pigweed plants can produce 300,000 seeds or more. Edinburgh Journal of Botany. Characterization of Chenopodiales (Amaranthus retroflexus, Chenopodium album, Kochia scoparia, Salsola pestifer) pollen allergens. 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]. This erect summer annual can be found flowering from July through October. 44. USDA, 1970. Redroot Pigweed has a noticeably shorter, thicker and compacted inflorescence, that only extends a short distance above the first branches of the panicle. Scientific name: Amaranthus retroflexus Family: Amaranthaceae Description: Redroot pigweed grows into a 2- to 6-foot tall plant during the heat of summer. Other common names for redroot pigweed include redroot amaranth, careless weed, and rough pigweed. Light limitation of reproduction and variation in the allometric relationship between reproductive and vegetative biomass in Amaranthus retroflexus (redroot pigweed). Weaver S E, McWilliams E L, 1980. Southwestern Entomologist, 15(1):27-31, Tisler AM, 1990. Journe^acute~es internationales sur la lutte contre les mauvaises herbes, Reims, France, 6-8 de^acute~cembre 1995. But don’t wallow in despair – control is possible. Feeding in the pigweed flea beetle, Disonycha glabrata Fab. Weights of seeds and numbers per plant. Vancouver, Canada: Greengrass. It is used in the Indian state of Kerala to prepare a popular dish known as thoran by combining the finely cut leaves with grated coconut, chili peppers, garlic, turmeric and other ingredients. References. Wesche-Ebeling P, Maiti R, García-Díaz G, González DI, Sosa-Alvarado F, 1995. Categories. and A. hybridus L. Canadian Journal of Plant Science, 60(4):1215-1234. Scientific Names: Redroot pigweed, Amaranthus retroflexus L., Green pigweed, Amaranthus powelli S. Responses of soybean and five weeds to CO2 enrichment under two temperature regimes. #3. Malabar, Florida, USA: Krieger Publishing Co. 391 pp. USDA, 1970. CONFIRMATION STATUS: Pending confirmation. Dose response of weeds to methyl iodide and methyl bromide. 44. Communication 1. Economic Botany, 49(4):423-430; 32 ref. Amaranthus L. In: Flora Europaea. Canadian Journal of Plant Science, 73(4):1305-1308; 9 ref. Further studies on oxalic acid biosynthesis in oxalate-accumulating plants. Wats., Abstracts of the 23rd Weed Science Society of America Conference, 23:61. (Disponibilité et efficacité de l'atrazine en sol acide: le cas du Tessin.). Allergy (Copenhagen), 50(6):489-497; [20 pl. Leaves: Lower leaves are oval and upper leaves are … 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. The seed of Redroot Pigweed are the first of the three pigweeds to mature. 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. Memoirs of the botanical survey of South Africa No 53. In: Agriculture Handbook No. 73-78. Annals of the Missouri Botanic Garden, 54:103-137. 2:52. McLachlan SM, Murphy SD, Tollenaar M, Weise SF, Swanton CJ, 1995. Psilotaceae to Platanaceae, Volume 1 (2nd edition) [ed. ]; 16 ref. Plants - Forbs/Herbs. 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. Sauer JD, 1955. Infestation of cultivated Amaranthus by the weevil Conotrachelus seniculus in southeastern Arizona. Baliousis E, 2014. 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. Weaver SE, McWilliams EL, 1980. Tashmatov Kh M, 1992. Wallingford, UK: CABI. Terry LI, Lee CW, 1990. CABI Compendium: Status as determined by CABI editor. Weed Herbarium – by Scientific Name. Wells M J, Balsinhas A A, Joffe H, Engelbrecht V M, Harding G, Stirton C H, 1986. Good control effects of glyphosate on weeds in late growth period maize in the field interplanted with wheat. The seeds are edible raw or toasted, and can be ground into flour and used for bread, hot cereal, or as a thickener. 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. Species across the genus contain concentric rings of vascular bundles, and fix carbon efficiently with a C4 photosynthetic pathway. [3] It is native to the tropical Americas, but is widespread as an introduced species on most continents in a great number of habitats. Wnrtzen PA, Nelson HS, LOwenstein H, Ipsen H, 1995. 80-86. Basic information: Scientific name: Amaranthus retroflexus: Click to magnify. Other Common Names: redroot amaranth, careless weed, Pigweed, red-root amaranth, rough pigweed. Distinguishing Features. Weed Science Society of America. Stevens O, 1957. HortScience. Limerick (v.c. The plant is monoecious, with individuals bearing both male and female flowers. The fruit is a utricle. 21 (3), 283-285. Scientific Name Amaranthus retroflexus ← → Other Common Names: careless weed. Seizie^grave~me confe^acute~rence du COLUMA. Common names: Redroot pigweed, Carelessweed, Redroot Amaranth: Higher taxon Redroot pigweed (Amaranthus retroflexus) is an introduced annual in amaranth family (Amaranthaceae). Wiese A, Davis R, 1967. Handle the task when plants are less than 3 inches tall, with roots still short, to prevent accidentally uprooting neighboring garden plants. [5] It is among the species consumed as a vegetable in Mexican markets as Quelite quintonil. Effectiveness of the utilization of different herbicides in maize crops. Selected Weeds of the United States. Siriwardana T, Zimdahl R, 1983. Redroot pigweed (Amaranthus retroflexus) poisoning of cattle in southern Brazil. Limerick (v.c. This plant is eaten as a vegetable in different places of the world. The Latin, or scientific name, of each pigweed includes the genus name Amaranthus; each respective species name differentiates among the genus members. CSIRO handbook of Australian weeds. Dose response of weeds to methyl iodide and methyl bromide. 60 (4), 1215-1234. Top of page A. retroflexus is thought to be a native riverbank pioneer of the central and … 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. Phytoindication of hydrogenous and haloid landscapes interrelations in Uzbekistan. This weed is a common cause of late-summer allergies. Virginia Journal of Science, 41(3):243-245. Common Name Reference: Weed Science Society of America Common Names List Scientific Name Reference: PLANTS Database. A catalogue of problem plants in southern Africa incorporating the national weed list of South Africa. Amaranthus palmeri is a species of edible flowering plant in the amaranth genus. 130-132. Plants are erect and usually around 3-4' in height, although they can grow larger. 366. Emergence pattern of five weeds in the central Great Plains. Aellen P, Akeroyd JR, 1993. Burgos N R, Talbert R E, 1996. Maigre D, 1991. Veterinary and Human Toxicology, 39(2):94-96; 33 ref. Leaves. Redroot pigweed (Amaranthus retroflexus). Tome 1., 411-417; 5 ref. Cambridge, UK: Cambridge University Press. CABI is a registered EU trademark. A. retroflexus was used for a multitude of food and medicinal purposes by many Native American groups. 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]. Alien plants at Foynes Port, Co. Another of A. retroflexus's common names is "pigweed" because it grows where hogs are pasture-fed. CABI, Undated. Changes in the weed species composition of the southern United States: 1974 to 1995. [8] However, when supplied in moderation, it is regarded as an exceptionally nutritious fodder. Amaranth is a herbaceous plant or shrub that is either annual or perennial across the genus. HortScience, 25(10):1260-1262. TAXONOMY: The currently accepted scientific name of rough pig-weed is Amaranthus retroflexus L. It is a member of the Pigweed Family (Amaranthaceae). Pretoria, South Africa: Botanical Research Institute. It thrives in open, sunny places inhabiting agricultural land … Scientific Names: Redroot pigweed, Amaranthus retroflexus L., Green pigweed, Amaranthus powelli S. Weeds, 15:118-121. Amaranthus retroflexus, true to one of its common names, forms a tumbleweed. Weed Science, 45(4):488-496; 2 pp. In: Watsonia, 4 261-280. Collingwood, Vic. Plant Protection. Reynolds SCP, 1996. vii + 264 pp. Propagation of Pacific Northwest Plants . Plant Physiology, 61:590-592. Botanical Dermatology: plants and plant products injurious to the skin. Oryokot JOE, Murphy SD, Thomas AG, Swanton CJ, 1997. rough pigweed. Amaranthus retroflexus L., A. powellii S. Wats. Agriculture Handbook No. The inflorescence is a large, dense cluster of flowers interspersed with spiny green bracts. Problems of Desert Development. 25 (10), 1260-1262. 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). 51-54. 71 (2), 275-285. DOI:10.1017/S0960428614000110. 324-325. DOI:10.1046/j.1365-3180.1997.d01-15.x. After four or five years, though, only about 10% of the initial population will be capable of emergence. 23 (3), 167-171. by Tutin TG, Burges NA, Chater AO, Edmondson JR, Heywood VH, Moore DM, Valentine DH, Walters SM, Webb DA]. Infestation of cultivated Amaranthus by the weevil Conotrachelus seniculus in southeastern Arizona. Revision of the dioecious amaranths. [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. This is an erect, annual herb reaching a maximum height near 3 m (9.8 ft). Selected Weeds of the United States. In areas where their distributions overlap, it is not uncommon to find both species growing together in the same field. The genetics of sex determination in the family Amaranthaceae. 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. Soil solarization and control of amaranth (Amaranthus retroflexus): heat resistance of the seeds. More information about modern web browsers can be found at Common Name(s): Redroot Pigweed, Rough Pigweed, Pigweed,Redroot: Scientific Name: Amaranthus retroflexus: Family: Amaranthaceae: Longevity: Annual: Season: germination and growth of redroot pigweed (Amaranthus retroflexus), Palmer amaranth (A. palmeri), and common water hemp (A. rudis).” Weed Science 51 (2003): 869-75. 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. Terminal (leaf) node. Amaranthus retroflexus L., A. powellii S. Wats. top Mitchell J, Rook A, 1979. 366, Washington DC, USA: United States Department of Agriculture. ABBREVIATION COMMON NAME SCIENTIFIC NAME ... AMARE Redroot Pigweed Amaranthus retroflexus AMATA Common Waterhemp Amaranthus rudis AMATU Tall Waterhemp Amaranthus tuberculatus AMBEL Common Ragweed Ambrosia artemisiifolia AMBTR Giant Ragweed Ambrosia trifida ARFSS Burdock Arctium L. species It has an erect stem, 1 to 6.6 feet tall, that is commonly freely branched. Temperature- and moisture-dependent models of seed germination and shoot elongation in green and redroot pigweed (Amaranthus powellii, A. retroflexus). 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. Powell amaranth (A. powelii) 4. 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. 3.1.3 Impermeable Seed Coat. Contributions to the botany and nutritional value of some wild Amaranthus species (Amaranthaceae) of Nuevo Leon, Mexico. Competition between barnyard grass (Echinochloa crus-galli) and red-root pigweed (Amaranthus retroflexus). Journal of Applied Ecology, 32(1):157-165. Recent data from the flora of the island of Limnos (NE Aegean, Greece): new alien invasive species affecting the agricultural economy of the island. In: Proceedings, 12th Asian-Pacific Weed Science Society Conference. Digestible energy and protein content of some annual weeds, alfalfa, bromegrass, and tame oats. v + 658pp. Sauer JD, 1967. Search Google Appliance Enter the terms you wish to search for. Reading Time: 2 minutes Redroot pigweed can be a tough customer. Problems of Desert Development, 2:51-54. The biology of Canadian weeds. A geographic atlas of world weeds. Please consider upgrading your browser to the latest version or installing a new browser. The alternate leaves are ovate with wavy margins. Weed Research (Oxford). Phytocoenological features and control strategies of weeds. Redroot pigweed (Amaranthus retroflexus), a common garden invader, has a long rosy taproot that pulls easily from moist soil. Anderson R L, Nielsen D C, 1996. of ref. [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. [Proceedings, 12th Asian-Pacific Weed Science Society Conference. Flowers vary interspecifically from the presence of 3 or 5 tepals and stamens, whereas a 7-porate pollen grain structure remains consistent across the family. Availability and efficacy of atrazine in acid soils: the Ticino case. 52. © Copyright 2020 CAB International. Wells MJ, Balsinhas AA, Joffe H, Engelbrecht VM, Harding G, Stirton CH, 1986. H8), 1988-1994. Madrono, 13:5-46. Southwestern Entomologist. The Latin, or scientific name, of each pigweed includes the genus name Amaranthus; each respective species name differentiates among the genus members. Weed Technology, 11(1):199-202; 35 ref. 37 (3), 181-189. Alien plants at Foynes Port, Co.