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Response of Sweetpotato Cultivars to Linuron Rate and Application Time

  • Shawn C. Beam (a1), Katherine M. Jennings (a2), Sushila Chaudhari (a3), David W. Monks (a4), Jonathan R. Schultheis (a5) and Mathew Waldschmidt (a6)...

Abstract

Field studies were conducted in 2015 and 2016 in North Carolina to determine the response of ‘Covington’ and ‘Murasaki-29’ sweetpotato cultivars to four rates of linuron (420, 560, 840, and 1,120 g ai ha–1) alone or with S-metolachlor (803 g ai ha–1) applied 7 or 14 d after transplanting (DAP). Injury (chlorosis/necrosis and stunting) to both cultivars was greater when linuron was applied with S-metolachlor as compared to linuron applied alone. Herbicide application at 14 DAP caused greater injury (chlorosis/necrosis and stunting) to both cultivars than when applied at 7 DAP. At 4 wk after treatment (WAT), stunting of Covington and Murasaki-29 (hereafter Murasaki) from linuron at 420 to 1,120 g ha–1 increased from 27% to 50% and 25% to 53%, respectively. At 7 or 8 WAT, crop stunting of 8% or less and 0% was observed in Covington and Murasaki, respectively, regardless of application rate and timing. Murasaki root yields were similar in the linuron alone or with S-metolachlor treatments, and were lower than the nontreated check. In 2016, no. 1 and marketable sweetpotato yields of Covington were similar for the nontreated check, linuron alone, or linuron plus S-metolachlor treatments, but not in 2015. Decreases in no. 1 and marketable root yields were observed when herbicides were applied 14 DAP compared to 7 DAP for Covington in 2015 and for Murasaki in both years. No. 1 and marketable yields of Covington were similar for 420 to 1,120 g ha–1 linuron and nontreated check except marketable root yields in 2015. No. 1 and marketable sweetpotato yields of Murasaki decreased as application rates increased.

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Corresponding author

Author for correspondence: Sushila Chaudhari, Department of Crop and Soil Sciences, North Carolina State University, William Hall, 101 Derieux Place, Raleigh, NC 27695. (Email: schaudh@ncsu.edu)

References

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Anonymous (2013) Linex® 4L herbicide label. Phoenix, AZ: Tessenderlo Kerley, Inc.
Barkley, SL, Chaudhari, S, Jennings, KM, Schultheis, JR, Meyers, SL, Monks, DW (2016) Fomesafen programs for Palmer amaranth (Amaranthus palmeri) control in sweetpotato. Weed Technol 30:506515
Beam, SC, Jennings, KM, Monks, DW, Schultheis, JR, Chaudhari, S (2017) Influence of herbicides on the development of internal necrosis of sweetpotato. Weed Technol 31:863869
Bell, CE, Boutwell, BE, Ogbuchiekwe, EJ, Mcgiffen, ME Jr (2000) Weed control in carrots: the efficacy and economic value of linuron. HortScience 35:10891091
Bellinder, RR, Kirkwyland, JJ, Wallace, RW (1997) Carrot (Daucus carota) and weed response to linuron and metribuzin applied at different crop stages. Weed Technol 11:235240
Bradeen, JM, Mollov, DS (2007) Herbicide tolerance in primitive diploid potato species comprising superseries Stellata: toward establishment of seedling cultivation conditions for field evaluations. Am J Potato Res 84:415424
Brandenberger, L, Carrier, L, Havener, R, Adams, R (2009) Screening pre and postemergence herbicides for use in cilantro (Coriandrum sativum). Page 55 in Proceedings of the Weed Science Society of America. Orlando, FL: Weed Science Society of America
Coleman, LB, Chaudhari, S, Jennings, KM, Schultheis, JR, Meyers, SL, Monks, DW (2016) Evaluation of herbicide timings for Palmer amaranth control in a stale seedbed sweetpotato production system. Weed Technol 30:725732
Frans, R, Talbert, R, Marx, D, Crowley, H (1986) Experimental design and techniques for measuring and analyzing plant responses to weed control practices. Page 2946 in Camper ND, ed. Research Methods in Weed Science. 3rd edn. Champaign, IL: Southern Weed Science Society
Hahn, RA (1992) Pre and postemergence control programs for annual weeds in soybeans. Page 117 in Proceedings of the Northeast Weed Sci Society, Boston, MA
Harrison, HF, Jones, JA, Dukes, PD (1985) Differential response of six sweet potato (Ipomoea batatas) cultivars to metribuzin. Weed Sci 33:730733
Kemble, JM (2015) Vegetable Crop Handbook for the Southeastern United States 2014. Lincolnshire, IL: Vance Publishing Corp. 283 p
La Bonte, DR, Villordon, AQ, Clark, CA, Wilson, PW, Stoddard, CS (2008)‘Murasaki-29’ sweetpotato. HortScience 43:18951896
Meyers, SL, Jennings, KM, Monks, DW (2012) Response of sweetpotato cultivars to S-metolachlor rate and application time. Weed Technol 26:474479
Meyers, SL, Jennings, KM, Monks, DW, Miller, DK, Shankle, MW (2013) Rate and application timing effects on tolerance of Covington sweetpotato to S-metolachlor. Weed Technol 27:729734
Meyers, SL, Jennings, KM, Schultheis, JR, Monks, DW (2010a) Interference of Palmer amaranth (Amaranthus palmeri) in sweetpotato. Weed Sci 58:199203
Meyers, SL, Jennings, KM, Schultheis, JR, Monks, DW (2010b) Evaluation of flumioxazin and S-metolachlor rate and timing for Palmer amaranth (Amaranthus palmeri) control in sweetpotato. Weed Technol 24:495503
Miller, DK, Mathews, MM, Smith, TP (2013) Weed control and sweet potato tolerance to linuron and fomesafen. Page 218 in Proceedings of the Southern Weed Science Society. Houston, TX: Southern Weed Science Society
Motsenbocker, CE, Monaco, TJ (1991) Sweet potatoes (Ipomoea batatas) differ in response to bentazon. Weed Technol 5:345350
[NCDACS] North Carolina Department of Agriculture and Consumer Services (2015) Research Stations Annual Report 2015. http://www.ncagr.gov/Research/documents/2015_Annual_Report_000.pdf. Accessed: May 29, 2017
Rouse, CE, Estorninos, LE Jr, Singh, V, Salas, RA, Singh, S, Burgos, NR (2015) Sweet potato tolerance to select herbicides for weed control in Arkansas. Page 111 in Proceedings of the Southern Weed Science Society. Savannah, GA: Southern Weed Science Society
Scott, JE, Weston, LA, Jones, RT (1995) Clomazone for weed control in transplanted cole crops (Brassica oleracea). Weed Sci 43:121127
[USDA] U.S. Department of Agriculture (2005) United States Standards for Grades of Sweet Potatoes. Washington, DC: U.S. Department of Agriculture
[USDA] U.S. Department of Agriculture (2018) Crop production 2017 summary. Washington, DC: U.S. Department of Agriculture
Webster, TM (2010) Weed survey—southern states vegetable, fruit and nut crops subsection. Page 256 in Proceedings of the Southern Weed Science Society. Little Rock, AR: Southern Weed Science Society
Yencho, GC, Pecota, KV, Schultheis, JR, VanEsbroeck, Z, Holmes, GJ, Little, BE, Thornton, AC, Truong, V (2008) ‘Covington’ sweetpotato. HortScience 43:19111914

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