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The Critical Period for Weed Control in Corn in Turkey

Published online by Cambridge University Press:  20 January 2017

Dogan Isik
Affiliation:
Black Sea Agricultural Research Institute, Samsun, Turkey
Husrev Mennan
Affiliation:
Department of Plant Protection, Faculty of Agriculture, Ondokuz Mayıs University, Samsun, Turkey
Bekir Bukun
Affiliation:
Department of Plant Protection, Faculty of Agriculture, Harran University, Şanlıurfa, Turkey
Ahmet Oz
Affiliation:
Black Sea Agricultural Research Institute, Samsun, Turkey
Mathieu Ngouajio*
Affiliation:
Department of Horticulture, Michigan State University, East Lansing, MI 48824
*
Corresponding author's E-mail: ngouajio@msu.edu

Abstract

Field studies were conducted in 2001 and 2002 in the Black Sea Region of northern Turkey to determine the critical period for weed control (CPWC) in corn and the effects of weed interference on corn height. Treatments of increasing duration of weed interference and weed-free period were imposed at weekly intervals from 0 to 12 wk after crop emergence (WAE). The CPWC was determined with the use of 2.5, 5, and 10% acceptable yield loss levels by fitting logistic and Gompertz equations to relative yield data. With 5% yield loss level, the CPWC was 5 wk, starting at 0.2 WAE and ending at 5.2 WAE, which corresponded to the one- to five-leaf stage of corn. The CPWC increased to 8.9 wk, starting at 0 WAE and ending at 8.9 WAE, at the 2.5% yield loss level. At 10% yield loss level, the CPWC decreased to 1.7 wk, starting at 2.1 WAE and ending at 3.8 WAE.

Type
Research
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Bedmar, F., Manetti, P., and Monterubbianesi, G. 1999. Determination of the critical period of weed control in corn using a thermal basis. Pesqui. Agropecu. Bras. 34:187193.Google Scholar
Brohi, A. R., Aydeniz, A., and Karaman, M. R. 1995. Toprak Verimliliği, Gaziosmanpaşa Üniversitesi, Ziraat Fakültesi Yayınları Kitaplar Serisi: 5 Tokat.Google Scholar
Bukun, B. 2004. The critical periods for weed control in cotton in Turkey. Weed Sci. 44:404412.Google Scholar
Dawson, J. W. 1970. Time and duration of weed infestations in relation to weed-crop competition. Proc. South. Weed Sci. Soc. 23:1315.Google Scholar
Evans, S. P., Knezevic, S. Z., Lindquist, J. L., Shapiro, C. A., and Blankenship, E. E. 2003. Nitrogen application influences the critical period for weed control in corn. Weed Sci. 51:408417.CrossRefGoogle Scholar
Ghosheh, H. Z., Holshouser, D. L., and Chandler, J. M. 1996. The critical period of johnsongrass (Sorghum halepense) control in field corn (Zea mays). Weed Sci. 44:944947.CrossRefGoogle Scholar
Halford, C. A., Hamill, A. S., Zhang, J., and Doucet, C. 2001. Critical period of weed control in no-till soybean and corn (Zea mays). Weed Technol. 15:737744.CrossRefGoogle Scholar
Hall, M. R., Swanton, C. J., and Anderson, G. W. 1992. The critical period of weed control in grain corn (Zea mays). Weed Sci. 40:441447.CrossRefGoogle Scholar
Knezevic, S. Z., Evans, S. P., Blankenship, E. E., Van Acker, R. C., and Lindquist, J. L. 2002. Critical period for weed control: the concept and data analysis. Weed Sci. 50:773786.Google Scholar
Knezevic, S. Z., Evans, S. P., and Mainz, M. 2003. Row spacing influences the critical timing for weed removal in soybean (Glycine max). Weed Technol. 17:666673.CrossRefGoogle Scholar
Nieto, H. J., Brondo, M. A., and Gonzalez, J. T. 1968. Critical periods of the crop growth cycle for competition from weeds. PANS 14:159166.Google Scholar
Norsworthy, J. K. and Oliveira, M. J. 2004. Comparison of the critical period for weed control in wide- and narrow-row corn. Weed Sci. 52:802807.Google Scholar
Papamichail, D., Eleftherohorinus, I., Froud-Williams, R., and Gravanis, F. 2002. Critical periods of weed competition in cotton in Greece. Phytoparasitica 30:17.Google Scholar
[SAS] Statistical Analysis Systems. 1999. SAS/STAT User's Guide Version 7–1. Cary, NC. Statistical Analysis Systems Institute. 1030 p.Google Scholar
Snipes, C. E., Street, J. E., and Walker, R. H. 1987. Interference periods of common cocklebur (Xanthium strumarium) with cotton (Gossypium hirsutum). Weed Sci. 35:529532.Google Scholar
Swanton, C. J. and Weise, S. F. 1991. Integrated weed management: the rationale and approach. Weed Technol. 5:657663.CrossRefGoogle Scholar
Van Acker, R. C., Swanton, C. J., and Weise, S. 1993. The critical period of weed control in soybean (Glycine max (L.) Merr). Weed Sci. 41:194200.Google Scholar