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Response of Teff, Barnyardgrass, and Broadleaf Weeds to Postemergence Herbicides

Published online by Cambridge University Press:  20 January 2017

O. Steven Norberg  and
Joel Felix
O. Steven Norberg*
Affiliation:
Oregon State University, Malheur County Extension Office, 710 SW 5th Avenue, Ontario, OR 97914
Joel Felix
Affiliation:
Oregon State University, Malheur Experiment Station, 595 Onion Avenue, Ontario, OR 97914
*
Corresponding author's E-mail: [email protected].
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Abstract

Teff is a warm-season C4 annual grass crop grown for forage and food grain that has recently increased in production in parts of the United States. Hay from teff is well suited for livestock, especially horses. The objective of this study was to evaluate teff and weed response to selected herbicides in field studies conducted at the Malheur Experiment Station, Ontario, OR in 2009 and 2010. Herbicides were applied POST when teff was at the four-leaf stage. Broadleaf weed control at 21 d after treatment was greater than 91% across herbicide treatments. Only the premix of 2.5 g ai ha−1 florasulam + 99 g ae ha−1 fluroxypyr + 15 g ai ha−1 pyroxsulam provided acceptable control of barnyardgrass. Due primarily to barnyardgrass competition, teff treated with a premix of 2.5 g ha−1 florasulam + 99 g ha−1 fluroxypyr + 15 g ha−1 pyroxsulam produced 7,200 kg ha−1 of teff hay compared with 4,800 kg ha−1 of teff hay for 2,4-D and dicamba and 4,200 kg ha−1 teff hay when no herbicides were used. Teff grain production was greater with 2.5 g ha−1 florasulam + 99 g ha−1 fluroxypyr + 15 g ha−1 pyroxsulam compared with any of the other treatments. The use of a premix of florasulam + fluroxypyr + pyroxsulam would improve broadleaf and grass weed control in ‘Tiffany' and ‘Dessie' teff varieties, improve hay and grain yield, and reduce production costs.

Teff es un pasto anual C4 de clima cálido que se produce para forraje y grano cuya producción se ha incrementado recientemente en diversas partes de Estados Unidos. El heno de teff es apropiado para ganado, y especialmente para caballos. El objetivo de este estudio fue evaluar la respuesta del teff y las malezas a varios herbicidas, en estudios de campo realizados en la Estación Experimental Malheur, Ontario, Oregon, en 2009 y 2010. Los herbicidas fueron aplicados POST cuando el teff tenía cuatro hojas. El control de malezas de hoja ancha a 21 d después del tratamiento fue superior a 91% en todos los tratamientos. Solamente la pre-mezcla de 2.5 g ai ha−1 de florasulam + 99 g ae ha−1 de fluroxypyr + 15 g ai ha−1 de pyroxsulam brindó control aceptable de Echinochloa crus-galli. Debido principalmente a la competencia de E. crus-galli, teff tratado con una pre-mezcla de 2.5 g ai ha−1 de florasulam + 99 g ae ha−1 de fluroxypyr + 15 g ai ha−1 de pyroxsulam produjo 7,200 kg ha−1 de heno de teff comparado con 4,800 kg ha−1 de heno de teff con 2,4-D y dicamba, y 4,200 kg ha−1 de heno de teff cuando no se usaron herbicidas. La producción de grano de teff fue mayor con 2.5 g ai ha−1 de florasulam + 99 g ae ha−1 de fluroxypyr + 15 g ai ha−1 de pyroxsulam al compararse con cualquiera de los otros tratamientos. El uso de una pre-mezcla de florasulam + fluroxypyr + pyroxsulam mejoraría el control de malezas de hoja ancha y gramíneas en las variedades de teff ‘Tiffany' y ‘Dessie', mejorando el rendimiento de heno y grano, y reduciendo los costos de producción.

Keywords

Carfentrazonedicambaflorasulamfluroxypyrpyroxsulam2,4-D aminebarnyardgrass, Echinochloa crus-galli (L.) Beauv.common lambsquarters, Chenopodium album L.common purslane, Portulaca oleracea L.hairy nightshade, Solanum physalifolium Rusbyredroot pigweed, Amaranthus retroflexus L.Palmer amaranth, Amaranthus palmeri (S.) Wats.teff, Eragrostis tef [Zucc.] ‘Dessie', Eragrostis tef [Zucc.] ‘Tiffany’Crop toleranceherbicide injuryteff injuryweed controlweed management
Type
Research Article
Information
Weed Technology , Volume 28 , Issue 2 , June 2014 , pp. 371 - 376
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Adnew, T, Ketema, S, Tefera, H, Sridhara, H (2005) Genetic diversity in tef [Eragrostis tef (Zucc.) Trotter] germplasm. Gen Resour Crop Evol 52:891–902 Google Scholar
Anonymous (2012) Latigo herbicide supplemental label. Helena Publication No. 5905-564. Collierville, TN: Helena. 2 pGoogle Scholar
Davison, J, Creech, E, Laca, M (2010) Response of Teff Grain Yields to Several Broadleaf Herbicides Applied at Three Different Growth Stages During 2009. University of Nevada Cooperative Extension Fact Sheet,10–76. Available at http://www.unce.unr.edu/publications/files/ag/2010/fs1076.pdf. Accessed April 4, 2013Google Scholar
Debelo, A (1992) Germination, Yield and Yield Components of Tef (Eragrostis tef) as Affected by Environment, Tillage, and Weed Control Practices. Ph.D Dissertation. Stillwater, OK: Oklahoma State University. 162 pGoogle Scholar
DeHaan, RL, Wyse, DL, Ehlke, NJ, Maxwell, BD, Putnam, DH (1994) Simulation of spring-seeded smother plants for weed control in corn (Zea mays). Weed Sci 42:35–43 Google Scholar
Engstrom, E (1974) Crop Production Trials 1967–72. CADU Publication No 79. p 50 Google Scholar
Feldt, S, Schuster, CL, Olson, BLS, Dille, JA (2006) Sensitivity of Teff (Eragrostis Tef) to Various Herbicides. Proc. North Cent. Soc. Weed Sci. Available at http://www.ncwss.org/proceed/2006/abstracts/40.pdf. Accessed March 27, 2013Google Scholar
Girma, K, Reinert, M, Ali, MS, Sutradhar, A, Mosali, J (2012) Nitrogen and phosphorus requirements of teff grown under dryland production system. Crop Manage DOI: Google Scholar
Hindes-Cook, BJ, Curtis, DW, Hulting, AG, Mallory-Smith, CA (2011) Tolerance of teff to herbicides. 2010 Seed Production Research at Oregon State University, Department of Crop and Soil Science Ext/CrS 130 Available at http://seed-ext.cropandsoil.oregonstate.edu/sites/default/files/15-SR-11-03-Hinds-Cook-Tolerance-of-Teff.pdf. Accessed April 4, 2013Google Scholar
Hunter, M, Barney, P, Kilcer, T, Cherney, J, Lawrence, J, Ketterings, QM (2007) Teff as Emergency Forage. Cornell Univ. Coop. Ext., Agronomy Fact Sheet 24. Available at http://www.mccc.msu.edu/states/TEFFCornellfactsheet24.pdf. Accessed March 27, 2013Google Scholar
Hunter, M, Ketterings, QM, Cherney, JH, Barney, P, Kilcer, T, Godwin, G (2009) Nitrogen needs of teff managed as forage crop in New York. Forage Grazinglands DOI: Google Scholar
Ketema, S (1997) Tef (Eragrostis tef (Zucc.) Trotter). 50 pages in Heller, J, Engels, J, Hammer, K, eds. Promoting the Conservation and Use of Underutilized and Neglected Crops. 12. Rome: Institute of Plant Genetics and Crop Plant Research Google Scholar
Norberg, S, Roseberg, RJ, Charlton, BA, Shock, C (2009) Teff, a New Warm-Season Annual Grass for Oregon. Oregon State University Extension Service, EM 8970-E, Corvallis, OR. Available at http://extension.oregonstate.edu/catalog/pdf/em/em8970-e.pdf. Accessed March 27, 2013Google Scholar
Roseberg, RJ, Norberg, S, Smith, JE, Charlton, BA, Rykbost, KA, Shock, C (2006) Yield and quality of teff forage as a function of varying rates of applied irrigation and nitrogen. in Research in the Klamath Basin 2005 Annual Report. OSU-AES Special Report 1069:119–136 Google Scholar
SAS (2008) User's Guide. 2nd edn. Version 9.2. Cary, NC: SAS Institute, Inc. Pages 266 pGoogle Scholar
Slotvisov, RJ, Ranikov, AN, Tegen, T (1979) Yield losses of cereal crops due to weeds and perspectives of their control. Conference at the Institute of Agricultural Research, Addis Ababa, Ethiopia, SPL, 87–96 Google Scholar
Stallknecht, GF (1997) Teff. New Crop FactSHEET. Purdue University Center for New Crops and Plant Products. Available at http://www.hort.purdue.edu/newcrop/cropfactsheets/teff.html. Accessed March 27, 2013Google Scholar
Twidwell, EK, Boe, A, Casper, DP (2002) Teff: A new annual forage grass for South Dakota?. South Dakota State University Cooperative Extension Service Bulletin Extra 8071, Brookings, SD. Available at http://pubstorage.sdstate.edu/AgBio_Publications/articles/ExEx8071.pdf. Accessed March 27, 2013Google Scholar
Wedryk, S, Cardina, J (2012a) Evaluation of tef as a smother crop during transition to organic management. Weed Technol 26:102–109 Google Scholar
Wedryk, S, Cardina, J (2012b) Smother crop mixtures for canada thistle (Cirsium arvense) suppression in organic transition. Weed Sci 60:618–623 Google Scholar
Wondimagegnehu, M, Parker, C (1983) Response of teff (Eragrostis tef (Zucc.) Trotter) to 2,4-D and MCPA at various growth stages. Weed Res 23:53–59 Google Scholar
Yu, JK, Graznak, E, Breseghello, F, Tefera, H, Sorrells, ME (2007) QTL mapping of agronomic traits in tef (Eragrostis tef (Zucc) Trotter). BMC Plant Biol 7:30 Google Scholar
Zenk, P (2005) Tons of Teff. Hay & Forage Grower. February 2005. p 4. Available at http://hayandforage.com/mag/farming_tons_teff. Accessed on March 27, 2013Google Scholar