Skip to main content Accessibility help
×
Home

Differences in Glyphosate-Resistant Weed Management Practices over Time and Regions

  • Xia “Vivian” Zhou (a1), Roland K. Roberts (a1), James A. Larson (a1), Dayton M. Lambert (a1), Burton C. English (a1), Ashok K. Mishra (a2), Lawrence L. Falconer (a3), Robert J. Hogan (a4), Jason L. Johnson (a4) and Jeanne M. Reeves (a5)...

Abstract

The objective of this research was to describe proportional differences across time and region in management practices among southern cotton farmers who experienced glyphosate-resistant (GR) weeds on their farms earlier than those who experienced them later and among farmers who were closest to one of four historical outbreak epicenters: Lauderdale County, TN; Macon County, GA; Edgecombe County, NC; and Terry County, TX. A mail survey was conducted with cotton farmers in 2012 from 13 southern, cotton-producing states. Survey responses on practices used by farmers were classified into three broad categories of labor, mechanical/tillage/chemical (MTC), and cultural. Proportions of respondents using practices from each category were identified by time and region; across which, proportional-difference tests were conducted. Results indicated respondents encountering GR weeds earlier were more likely than farmers who experienced them later to use the three broad-category practices (labor, 98 vs. 92%; MTC, 95 vs. 89%; and cultural, 86 vs. 76%) and specific practices, including hooded sprayers (76 vs. 58%), in-season herbicide change (83 vs. 60%), and field-border management (60 vs. 35%). Also, respondents closest to Lauderdale County were more likely than farmers closest to Edgecombe County to use broad-labor practices (99 vs. 91%) and specific practices, including hand hoeing (96 vs. 84%), hand spraying (49 vs. 31%), spot spraying (76 vs. 59%), wick applicator (13 vs. 11%), and field-border management (58 vs. 39%). Education programs on weed management can be developed and tailored according to the time and regional differences to provide effective information and communication channels to farmers.

El objetivo de esta investigación fue describir las diferencias proporcionales entre productores sureños de algodón en el uso de prácticas culturales, considerando el momento y la región, para productores que han tenido malezas resistentes a glyphosate (GR) en sus fincas primero y productores que las han tenido después, y entre productores que estuvieron cerca de uno de cuatro epicentros históricos de aparición de resistencia: condado Lauderdale, Tennessee; condado Macon, Georgia; condado Edgecombe, North Carolina; y condado Terry, Texas. Se realizó una encuesta por correo con productores de algodón en 2012 en 13 estados sureños productores de algodón. Las respuestas de la encuesta sobre las prácticas usadas por los productores fueron clasificadas en tres amplias categorías: mano de obra, mecánicas/labranza/químicas (MTC), y culturales. Las proporciones de los que respondieron que usaron prácticas de cada categoría fueron identificadas por momento y región; entre las cuales se realizaron pruebas de diferencias entre proporciones. Los resultados indicaron que quienes respondieron y encontraron malezas GR temprano, tuvieron más probabilidad de usar las tres categorías de prácticas que aquellos que encontraron malezas GR después (labranza, 98 vs. 92%, MTC, 95 vs. 89%, y cultural, 86 vs. 76%) y prácticas específicas que incluyeron aspersores con coberturas de campana (76 s. 58%), cambio de herbicidas durante la temporada de producción (83 vs. 60%), y el manejo de malezas en los bordes de los campos (60 vs. 35%). Además, los encuestados más cercanos al condado Lauderdale fueron los que tuvieron una mayor probabilidad de usar prácticas con mano de obra (99 vs. 91%) que los productores cercanos al condado Edgecombe, y prácticas que incluyeron labranza manual con azadón (96 vs. 84%), aplicación de herbicidas manual (49 vs. 31%), aplicaciones dirigidas (76 vs. 59%), aplicador con azadón químico (13 vs. 11%), y manejo de malezas en los bordes del terreno (58 vs. 39%). Los programas de educación en el manejo de malezas pueden ser desarrollados y dirigidos dependiendo de las diferencias en los momentos y las regiones en que se detecta la resistencia para brindar información y canales de comunicación efectivos para los productores.

Copyright

Corresponding author

Corresponding author's E-mail: xzhou11@utk.edu.

References

Hide All
Anonymous (2002) Managing Glyphosate-Resistant Weeds—An Investment in Land Value. Syngenta Crop Protection. http://www.syngentacropprotection.com/env_stewardship/resistancemanagement/land_values.pdf. Accessed October 31, 2005
Baldwin, F (2011) Going Back in Time for Weed Control. Delta Farm Press. http://www.deltafarmpress.com/soybeans/going-back-time-weed-control. Accessed May 22, 2014
Beckie, HJ (2006) Herbicide-resistant weeds: management tactics and practices. Weed Technol 20:793814
Bonny, S (2008) Genetically modified glyphosate-tolerant soybean in the USA: adoption factors, impacts and prospects—a review. Agron Sustain Dev 28:2132
Brandon, H (2011) Herbicide resistant weeds cost farmers millions. Delta Farm Press Blog February 25. http://deltafarmpress.com/soybeans/herbicide-resistant-weeds-cost-farmers-millions. Accessed November 5, 2015
Cline, H. (2013). Palmer Amaranth Resistance Spreads in Texas High Plains. Southeast Farm Press. http://www.southwestfarmpress.com/cotton/palmer-amaranth-resistance-spreads-texas-high-plains. Accessed: January 10, 2013
Culpepper, AS (2006) Glyphosate-induced weed shifts. Weed Technol 20:277281
Culpepper, AS, York, AC, Kichler, J (2008) University of Georgia herbicide programs for controlling glyphosate-resistant Palmer amaranth in 2008 cotton. Tifton, GA: Georgia Cooperative Extension Service Circular 924
Dillman, DA (1978) Mail and Telephone Surveys: The Total Design Method. New York: Wiley & Sons. 325
Duke, SO, Powles, SB (2008) Mini-review glyphosate: a once-in-a-century herbicide. Pest Manag Sci 64:319325
Duzy, LM, Price, AJ, Balkcom, KS (2011) Estimating the net returns of managing pigweed in cotton. Pages 336339 in Proceedings of Beltwide Cotton Conference. Cordova, TN National Cotton Council of America
Foresman, C, Glasgow, L (2008) US grower perceptions and experiences with glyphosate-resistant weeds. Pest Manag Sci 64:388391
Franz, JE, Mao, MK, Sikorski, JA (1996) Glyphosate: a unique global pesticide. Washington, DC: American Chemical Society. 653 p
Frisvold, GB, Hurley, TM, Mitchell, PD (2009) Adoption of best management practices to control weed resistance by corn, cotton, and soybean growers. Agbioforum 12:370381
Givens, WA, Shaw, DR, Newman, ME, Weller, SC, Young, BG, Wilson, RG, Owene, MDK, Jorda, DL (2011) Benchmark study on glyphosate-resistant cropping systems in the United States, part 3: grower awareness, information sources, experiences and management practices regarding glyphosate-resistant weeds. Pest Manag Sci 67:758770
Green, JM (2007) Review of glyphosate and ALS-inhibiting herbicide crop resistance and resistant weed management. Weed Technol 21:547558
Green, JM (2012) The benefits of herbicide-resistant crops. Pest Manag Sci 68:13231331
Harrington, J, Byrne, PF, Peairs, FB, Nissen, SJ, Westra, P, Ellsworth, PC, Fournier, AL, Mallory-Smith, CA, Zemetra, RS, Henry, WB (2009) Perceived consequences of herbicide-tolerant and insect-resistant crops on integrated pest management strategies in the western United States: results of an online survey. Agbioforum 12:412421
Hayes, RM, Mueller, TC, Willis, JB, Montgomery, RF (2002) Glyphosate-resistant horseweed and factors influencing its control. Proc South Weed Sci Soc 55:119120
Heap, I (2008) International Survey of Herbicide Resistant Weeds. Weed Science Society of America. http://www.weedscience.org. Accessed June 21, 2014
Holm, LG, Plunknett, DL, Pancho, JV, Herberger, JP (1977) The World's Worst Weeds: Distribution and Biology. Honolulu, HI: University Press of Hawaii. 609 p
Johnson, WG, Davis, VM, Kruger, GR, Weller, SC (2009a) Influence of glyphosate-resistant cropping systems on weed species shifts and glyphosate-resistant weed populations. Eur J Agron 31:162172
Johnson WG Gibson KD (2006) Glyphosate-resistant weeds and resistance management strategies: an Indiana grower perspective. Weed Technol 20:768772
Johnson, WG, Owen, MDK, Kruger, GR, Young, BG, Shaw, DR, Wilson, RG, Wilcut, JW, Jordan, DL, Weller, SC, Bernards, ML, Young, BG (2009b) U.S. farmer awareness of glyphosate-resistant weeds and resistance management strategies. Weed Technol 23:308312
Kruger, GR, Johnson, WG, Weller, SC, Owen, MDK, Shaw, DR, Wilcut, JW, Jordan, DL, Wilson, RG, Bernards, ML, Young, BG (2009) US grower views on problematic weeds and changes in weed pressure in glyphosate-resistant corn, cotton, and soybean cropping systems. Weed Technol 23:162166
Laws, F (2010) Cotton: 2 Strikes in Weed Resistance. Southeast Farm Press. http://www.southeastfarmpress.com/cotton/cotton-2-strikes-weed-resistance. Accessed August 20, 2014
Llewellyn, RS, Lindner, RK, Pannell, DJ, Powles, SB (2002) Resistance and the herbicide resource: perceptions of Western Australian grain growers. Crop Prot 21: 10671075
Lohr, SL (1999) Sampling: Design and Analysis. Pacific Grove, CA: Duxbury Pp 3942
Norsworthy, JK, Griffith, GM, Scott, RC, Smith, KL, Oliver, LR (2008) Confirmation and control of glyphosate-resistant Palmer amaranth (Amaranthus palmeri) in Arkansas. Weed Technol 22:108113
Norsworthy, JK, Ward, SM, Shaw, DR, Llewellyn, RS, Nichols, RL, Webster, TM, Bradley, KW, Frisvold, G, Powles, SB, Burgos, NR, Witt, WW, Barrett, M (2012) Reducing the risks of herbicide resistance: best management practices and recommendations. Weed Sci 60:3162
Owen, MDK, Zelaya, IA (2005) Herbicide-resistant crops and weed resistance to herbicides. Pest Manag Sci 61:301311
Prince, JM, Shaw, DR, Givens, WA, Newman, ME, Owen, MDK, Weller, SC, Young, BG, Wilson, RG, Jordan, DL (2012) Benchmark study, II: a 2010 survey to assess grower awareness of and attitudes toward glyphosate resistance. Weed Technol 26:531535
Roberson, R (2011) Glyphosate resistant pigweed arrives in Virginia. Southeast Farm Press. http://www.southeastfarmpress.com/cotton/glyphosate-resistant-pigweed-arrives-virginia. Accessed December 5, 2013
Roberts, RK, English, BC, Gao, Q, Larson, JA (2006) Simultaneous adoption of herbicide-resistant and conservation-tillage cotton technologies. J Agric Appl Econ 38:629643
Robinson, E (2010) Old technology coming out of the closet. Delta Farm Press http://www.deltafarmpress.com/management/old-technology-coming-out-closet. Accessed October 12, 2014
Rowland, MW, Murray, DS, Verhalen, LM (1999) Full-season Palmer amaranth (Amaranthus palmeri) interference with cotton (Gossypium hirsutum). Weed Sci 47:305309
Scott, BA, VanGessel, MJ (2007) Delaware soybean grower survey on glyphosate-resistant horseweed (Conyza canadensis). Weed Technol 21:270274
Sheskin, D (2011) Test 29: Spearman's rank-order correlation coefficient. Page 1353 in Sheskin, DJ, ed., Handbook of Parametric and Nonparametric Statistical Procedures, 5th edn. Boca Raton, FL: Chapman & Hall/CRC
Snedecor, GW, Cochran, WG (1967) Statistical Methods. 6th edn. Ames, IA: Iowa State University Press. 593
StataCorp (2013) Stata Statistical Software: Release 13, College Station, TX: StataCorp
Steckel, L (2006) Horseweed. Knoxville, TN: University of Tennessee Extension Fact Sheet 06-0034
Tillé, Y (1996) An elimination procedure for unequal probability sampling without replacement. Biometrika 83:238241
[USDA-NASS] United States Department of Agriculture-National Agricultural Statistics Service (2011) CropScape and Cropland Data Layer. Washington, DC: Department of Agriculture
VanGessel, MJ (2001) Glyphosate resistant horseweed from Delaware. Weed Sci 49:703705
Yancy, CH (2003) Glyphosate resistant horseweed causing concern in North Carolina. Southeast Farm Press. http://www.southeastfarmpress.com/glyphosate-resistant-horseweed-causing-concern-north-carolina. Accessed November 17, 2014
Zhou, X, Larson, J A, Lambert, DM, Roberts, RK, English, BC, Bryant, KJ, Mishra, AK, Falconer, LL, Hogan, RJ, Johnson, JL, Reeves, JM (2015) Farmer experience with weed resistance to herbicide in cotton production. Agbioforum 18:112

Keywords

Metrics

Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed