Hostname: page-component-76fb5796d-2lccl Total loading time: 0 Render date: 2024-04-25T22:21:04.113Z Has data issue: false hasContentIssue false
  • English
  • Français

Response of Sweetpotato to Oryzalin Application Rate and Timing

Published online by Cambridge University Press:  21 December 2018

Sushila Chaudhari ,
Katherine M. Jennings  and
Stephen L. Meyers
Sushila Chaudhari*
Affiliation:
Postdoctoral Research Scholar, Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, USA
Katherine M. Jennings
Affiliation:
Associate Professor, Department of Horticultural Science, North Carolina State University, Raleigh, NC, USA
Stephen L. Meyers
Affiliation:
Assistant Extension/Research Professor, North Mississippi Research and Extension Center, Pontotoc Ridge–Flatwoods Branch Experiment Station,Mississippi State University, Pontotoc, MS, USA
*
*Author for correspondence: Sushila Chaudhari, Department of Crop and Soil Sciences, William Hall, 101 Derieux Place, North Carolina State University, Raleigh, NC, 27695. (E-mail: schaudh@ncsu.edu)
Get access Rights & Permissions [Opens in a new window]

Abstract

The investigation of potential herbicides for weed control in sweetpotato is critical due to the limited number of registered herbicides and the development of populations of herbicide- resistant weeds. Therefore, field studies were conducted at the Horticultural Crops Research Station, Clinton, NC and the Pontotoc Ridge–Flatwoods Branch Experiment Station, Pontotoc, MS to determine the effect of oryzalin application rate and timing on sweetpotato tolerance. Oryzalin at 0.6, 1.1, 2.2, 3.4, and 4.5 kg ai ha–1 was applied immediately after transplanting or 14 d after sweetpotato transplanting (DAP). At Clinton, oryzalin applied immediately after transplanting resulted in ≤1% leaf distortion 4 and 6 wk after transplanting (WAP) regardless of application rate. However, when oryzalin was applied 14 DAP, greater sweetpotato leaf distortion was observed from 2.2, 3.4, and 4.5 kg ha–1 (≤8%) than 0.6 and 1.1 kg ha–1 (≤4%). At Pontotoc, oryzalin applied immediately after transplanting resulted in ≤6% leaf distortion 4 WAP regardless of application rate. However, when oryzalin was applied at 14 DAP, greater leaf distortion was reported from 3.4 and 4.5 kg ha–1 (11 to 13%) than 0.6, 1.1, and 2.2 kg ha–1 (4 to 6%). Oryzalin application rate and timing did not affect yield of no.1, jumbo, or marketable sweetpotato. Based on these results, oryzalin herbicide has potential for registration in sweetpotato.

Keywords

Peter J. Dittmar, University of FloridaOryzalinsweetpotatoIpomoea batatas (L.) Lam. ‘Covington,’ ‘Beauregard’Crop injurycrop tolerancestorage root
Type
Research Article
Information
Weed Technology , Volume 32 , Issue 6 , December 2018 , pp. 722 - 725
Copyright
© Weed Science Society of America, 2018. 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Anonymous (2014) Surflan AS specialty herbicide label. King of Prussia, PA: United Phosphorus, Inc. 12 p Google Scholar
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 30:506–515 Google Scholar
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 30:725–732 Google Scholar
Derr, JF (1994) Weed control in container-grown herbaceous perennials. HortScience 29:95–97 Google Scholar
Glaze, NC, Hall, MR (1990) Cultivation and herbicides for weed control in sweet potato (Ipomoea batatas). Weed Technol 4:518–523 Google Scholar
Gossett, BJ, Murdock, EC, Toler, JE (1992) Resistance of Palmer amaranth (Amaranthus palmeri) to the dinitroaniline herbicides. Weed Technol 6:587–591 Google Scholar
Hanson, BD, Schneider, SA (2008) Evaluation of weed control and crop safety with herbicides in open field tree nurseries. Weed Technol 22:493–498 Google Scholar
Kadir, S, Al-Khatib, K (2006) Weed control in grape after fall and spring application of selected herbicides. Weed Technol 20:74–80 Google Scholar
Kemble, JM, ed (2017) Southeastern U.S. Vegetable Crop Handbook. Lincolnshire IL: Vance. P 286 Google Scholar
Meyers, SL, Jennings, KM, Monks, DW (2017) Sweetpotato tolerance and Palmer amaranth control with metribuzin and oryzalin. Weed Technol 31:903–907 Google Scholar
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 27:729–734 Google Scholar
Meyers, SL, Jennings, KM, Schultheis, JR, Monks, DW (2010a) Evaluation of flumioxazin and S-metolachlor rate and timing for Palmer amaranth (Amaranthus palmeri) control in sweetpotato. Weed Technol 24:495–503 Google Scholar
Meyers, SL, Jennings, KM, Schultheis, JR, Monks, DW (2010b) Interference of Palmer amaranth (Amaranthus palmeri) in sweetpotato. Weed Sci 58:199–203 Google Scholar
Nelson, JE, Meggitt, WF, Penner, D, Ladlie, JS (1983) The influence of environmental factors on oryzalin activity. Weed Sci 31:752–758 Google Scholar
[NCDACS] North Carolina Department of Agriculture and Consumer Services (2015) Research Stations Annual Report 2015. Raleigh, NC: NCDACS. http://www.ncagr.gov/Research/documents/2015_Annual_Report_000.pdf. Accessed: May 29, 2017Google Scholar
Rolston, LH, Riley, EG, Wilson, PW, Robbins, ML, Clark, CA, Cannon, JM, Randle, WM (1987) ‘Beauregard’ sweet potato. HortScience 22:1338–1339 Google Scholar
Scott, JE, Weston, LA, Jones, RT (1995) Clomazone for weed control in transplanted cole crops (Brassica oleracea). Weed Sci 43:121–127 Google Scholar
Shaner, DL, ed. (2014) Herbicide Handbook. 10th edn. Lawrence, KS: Weed Science Society of America. Pp 308–310, 327–328Google Scholar
[USDA] U.S. Department of Agriculture (2005) United States Standards for Grades of Sweet Potatoes. Washington, DC: U.S. Department of Agriculture. 5 p Google Scholar
[USDA] U.S. Department of Agriculture (2018) Crop Value 2017 Summary. Washington, DC: U.S. Department of Agriculture. 50 pGoogle Scholar
Yencho, GC, Pecota, KV, Schultheis, JR, VanEsbroeck, Z, Holmes, GJ, Little, BE, Thornton, AC, Truong, V (2008) ‘Covington’ sweetpotato. HortScience 43:1911–1914 Google Scholar