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Influence of timing of Palmer amaranth control in dicamba-resistant cotton on yield and economic return

  • Matthew D. Inman (a1), David L. Jordan (a2), Matthew C. Vann (a3), Andrew T. Hare (a4), Alan C. York (a5) and Charles W. Cahoon (a6)...

Abstract

Glyphosate-resistant (GR) Palmer amaranth continues to be challenging to control across the U.S. cotton belt. Timely application of POST herbicides and herbicides applied at planting or during the season with residual activity are utilized routinely to control this weed. Although glyphosate controls large Palmer amaranth that is not GR, herbicides such as glufosinate used in resistance management programs for GR Palmer amaranth must be applied when weeds are small. Dicamba can complement both glyphosate and glufosinate in controlling GR and glyphosate-susceptible (GS) biotypes in resistant cultivars. Two studies were conducted to determine Palmer amaranth control, weed biomass, and cotton yield, as well as to estimate economic net return when herbicides were applied 2, 3, 4, and 5 wk after planting (WAP). In one experiment POST-only applications were made. In the second experiment PRE herbicides were included. In general, Palmer amaranth was controlled at least 98% by herbicides applied at least three times regardless of timing of application or herbicide sequence. Glyphosate plus dicamba applied at 4 and 5 WAP controlled Palmer amaranth similarly compared to three applications by 8 WAP; however, yield was reduced 23% because of early-season interference. The inclusion of PRE herbicides benefited treatments that did not include herbicides applied 2 or 3 WAP. Glyphosate plus dicamba applied as the only herbicides 5 WAP provided 69% control of Palmer amaranth. PRE herbicides increased control to 96% for this POST treatment. Economic returns were similar when three or more POST applications were applied, with or without PRE herbicides.

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Corresponding author

Author for correspondence: Matthew D. Inman, Clemson University, Pee Dee Research and Education Center, 2200 Pocket Road, Florence, SC29506. Email: mdinman@clemson.edu

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Associate Editor: Daniel Stephenson, Louisana State University Agricultural Center

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References

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Askew, SD, Wilcut, JW (1999) Cost and weed management with herbicide programs in glyphosate-resistant cotton (Gossypium hirsutum). Weed Technol 13:308313
Barnett, KA, Culpepper, AS, York, AC, Steckel, LE (2013) Palmer amaranth (Amaranthus palmeri) control by glufosinate plus fluometuron applied postemergence to WideStrike® cotton. Weed Technol 27:291297
Beckie, HJ (2006) Herbicide-resistant weeds: management tactics and practices. Weed Technol 20:793814
Blouin, DC, Webster, EP, Bond, JA (2011) On the analysis of combined experiments. Weed Technol 25:165169
Buchanan, G, Burns, E (1970) Influence of weed competition on cotton. Weed Sci 18:149154
Buhler, DD, Hartzler, RG, Forcella, F (1997) Implications of weed seedbank dynamics to weed management. Weed Sci 45:329336
Burke, IC, Troxler, SC, Askew, SD, Wilcut, JW, Smith, WD (2005) Weed management systems in glyphosate-resistant cotton. Weed Technol 19:422429
Cahoon, CW, York, AC, Jordan, DL, Seagroves, RW, Everman, WJ, Jennings, KM (2015a) Sequential and co-applications of glyphosate and glufosinate in cotton. J Cotton Sci 19:337350
Cahoon, CW, York, AC, Jordan, DL, Everman, WJ, Seagroves, RW, Culpepper, AS, Eure, PM (2015b) Palmer amaranth (Amaranthus palmeri) management in dicamba-resistant cotton. Weed Technol 29:758770
Cahoon, CW, York, AC, Jordan, DL, Everman, WJ, Seagroves, RW, Braswell, LR, Jennings, KM (2015c) Weed control in cotton by combinations of microencapsulated acetochlor and various residual herbicides applied preemergence. Weed Technol 29:740750
Carmer, SG, Nyquist, WE, Walker, WM (1989) Least significant differences for combined analyses of experiments with two- or three-factor treatment designs. Agron J 81:665672
Coetzer, E, Al-Khatib, K, Peterson, DE (2002) Glufosinate efficacy on Amaranthus species in glufosinate-resistant soybean (Glycine max). Weed Technol 16:326331
Corbett, JL, Askew, SD, Thomas, WE, Wilcut, JW (2004) Weed efficacy evaluations for bromoxynil, glufosinate, glyphosate, pyrithiobac, and sulfosate. Weed Technol 18:443453
Culpepper, AS, York, AC (1998) Weed management in glyphosate-tolerant cotton. J Cotton Sci 2:174185
Culpepper, AS, York, AC (1999) Weed management and net returns with transgenic, herbicide-resistant, and non-transgenic cotton (Gossypium hirsutum). Weed Technol 13:411420
Culpepper, AS, Grey, TL, Vencill, WK, Kichler, JM, Webster, TM, Brown, SM, York, AC, Davis, JW, Hanna, WW (2006) Glyphosate-resistant Palmer amaranth (Amaranthus palmeri) confirmed in Georgia. Weed Sci 54:620626
Culpepper, AS, Webster, TM, Sosnoskie, LM, York, AC (2010) Glyphosate-resistant Palmer amaranth in the United States. Pages 195212in Nandula, VK, ed., Glyphosate Resistance in Crops and Weeds: History, Development, and Management. Hoboken, NJ: Wiley
Culpepper, AS, York, AC, Batts, RB, Jennings, KM (2000) Weed management in glufosinate- and glyphosate-resistant soybean (Glycine max). Weed Technol 14:7788
Edmisten, KL, Yelverton, FH, Bachelor, JS, Koenning, SR, Crozier, CR, Meijer, AD, Cleveland, BR, York, AC, Hardy, DH, Bullen, G (2015) Cotton Information. Publication AG-417. Raleigh, NC: North Carolina Cooperative Extension Service
Everman, WJ, Burke, IC, Allen, JR, Collins, J, Wilcut, JW (2007) Weed control and yield with glufosinate-resistant cotton weed management systems. Weed Technol 21:695701
Everman, WJ, Clewis, SB, York, AC, Wilcut, JW (2009) Weed control and yield with flumioxazin, fomesafen, and S-metolachlor systems for glufosinate-resistant cotton residual weed management. Weed Technol 23:391397
Fast, BJ, Murdock, SW, Farris, RL, Willis, JB, Murray, DS (2009) Critical timing of Palmer amaranth (Amaranthus palmeri) removal in second-generation glyphosate-resistant cotton. J Cotton Sci 13:3236
Frans, RE, Talbert, R, Marx, D, Crowley, H (1986) Experimental design and techniques for measuring and analyzing plant responses to weed control practices. Pages 2946in Camper, ND, ed., Research Methods in Weed Science. Champaign, IL: Southern Weed Science Society
Inman, MD, Jordan, DL, York, AC, Jennings, KM, Monks, DW (2017) Long-term management of Palmer amaranth with herbicides and cultural practices in cotton. Crop, Forage and Turfgrass Management 3:2017-03-0017, 10.2134/cftm2017.03.0017
Inman, MD, Jordan, DL, York, AC, Jennings, KM, Monks, DW, Everman, WJ, Bollman, SL, Fowler, JT, Cole, RM, Soteres, JK (2016) Long-term management of Palmer amaranth (Amaranthus palmeri) in dicamba-tolerant cotton. Weed Sci 64:161169
Johnson, B, Young, B, Matthews, J, Marquardt, P, Slack, C, Bradley, K, York, A, Culpepper, S, Hager, A, Al-Khatib, K, Steckel, L, Moechnig, M, Loux, M, Bernards, M, Smeda, R (2010) Weed control in dicamba-resistant soybeans. Crop Manag 9(1), 10.1094/CM-2010-0920-01-RS
Jordan, DL, Frans, RE, McClelland, MR (1993) Total postemergence herbicide programs in cotton (Gossypium hirsutum) with sethoxydim and DPX-PE350. Weed Technol 7:196201
Jordan, DL, York, AC, Seagroves, RW, Everman, WJ, Clewis, B, Wilcut, J, Shaw, D, Owen, M, Wilson, R, Young, B, Weller, S (2014) Economic value of herbicide programs and implications for resistance management in North Carolina. Crop Manag 13, 10.2134/CM-2014-0023-RS
MacRae, AW, Culpepper, AS, Webster, TM, Sosnoskie, LM, Kichler, JM (2013) Cotton yield loss potential in response to length of Palmer amaranth (Amaranthus palmeri) interference. J Cotton Sci 17:227233
Merchant, RM, Sosnoskie, LM, Culpepper, AS, Steckel, LE, York, AC, Braxton, LB, Ford, JC (2013) Weed response to 2,4-D, 2,4-DB, and dicamba applied alone or with glufosinate. J Cotton Sci 17:212218
Moore, KJ, Dixon, PM (2015) Analysis of combined experiments revisited. Agron J 107:763771
Morgan, GD, Baumann, PA, Chandler, JM (2001) Competitive impact of Palmer amaranth (Amaranthus palmeri) on cotton (Gossypium hirsutum) development and yield. Weed Technol 15:408412
Norsworthy, JK, Korres, NE, Bagavathiannan, MV (2018) Weed seedbank management: revisiting how herbicides are evaluated. Weed Sci 66:415417
Norsworthy, JK, Schrage, BW, Barber, TL, Schwartz, LM (2016) Emergence date influences growth and fecundity of Palmer amaranth in cotton. J Cotton Sci 20:263270
Norsworthy, JK, Smith, KL, Steckel, LE, Koger, CH (2009) Weed seed contamination of cotton gin trash. Weed Technol 23:574580
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(SP1):3162
Rowland, MW, Murray, DS, Verhalen, LM (1999) Full-season Palmer amaranth (Amaranthus palmeri) interference with cotton (Gossypium hirsutum). Weed Sci 47:305309
Smith, DT, Baker, RV, Steele, GL (2000) Palmer amaranth (Amaranthus palmeri) impacts on yield, harvesting, and ginning in dryland cotton (Gossypium hirsutum). Weed Technol 14:122126
Sosnoskie, LM, Culpepper, AS (2014) Glyphosate-resistant Palmer amaranth (Amaranthus palmeri) increases herbicide use, tillage, and hand-weeding in Georgia cotton. Weed Sci 62:393402
Stewart, CL, Nurse, RE, Hamill, AS, Sikkema, PH (2010) Environment and soil conditions influence pre- and postemergence herbicide efficacy in soybean. Weed Technol 24:234243
Vann, RA, York, AC, Cahoon, CW, Buck, TB, Askew, MC, Seagroves, RW (2017a) Effect of delayed dicamba plus glufosinate on Palmer amaranth control and XtendFlex cotton yield. Weed Technol 31:633640
Vann, RA, York, AC, Cahoon, CW, Buck, TB, Askew, MC, Seagroves, RW (2017b) Glufosinate plus dicamba for rescue Palmer amaranth control in XtendFlex cotton. Weed Technol 31:666674
Ward, SM, Webster, TM, Steckel, LE (2013) Palmer amaranth (Amaranthus palmeri): a review. Weed Technol 27:1227
Webster, TM (2013) Weed survey—southern states: broadleaf crops subsection. Pages 275–287 in Proceedings of the Southern Weed Science Society. Houston, TX: Southern Weed Science Society
Webster, TM, Grey, TL (2015) Glyphosate-resistant Palmer amaranth (Amaranthus palmeri) morphology, growth, and seed production in Georgia. Weed Sci 63:264272
Whitaker, JR, York, AC, Jordan, DL, Culpepper, AS, Sosnoskie, LM (2011) Residual herbicides for Palmer amaranth control. J Cotton Sci 15:8999
York, AC, Culpepper, AS, Sosnoskie, LM, Bollman, S (2012) Palmer amaranth management in dicamba/glufosinate tolerant cotton. Page 98 in Proceedings of the 2012 Southern Weed Science Society 65th Annual Meeting. Charleston, SC: Southern Weed Science Society

Keywords

Influence of timing of Palmer amaranth control in dicamba-resistant cotton on yield and economic return

  • Matthew D. Inman (a1), David L. Jordan (a2), Matthew C. Vann (a3), Andrew T. Hare (a4), Alan C. York (a5) and Charles W. Cahoon (a6)...

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