Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-27T09:35:17.206Z Has data issue: false hasContentIssue false
  • English
  • Français

Weed Control and Economic Comparisons of Glyphosate-Resistant, Sulfonylurea-Tolerant, and Conventional Soybean (Glycine max) Systems

Published online by Cambridge University Press:  20 January 2017

Krishna N. Reddy  and
Kelly Whiting
Krishna N. Reddy*
Affiliation:
Southern Weed Science Research Unit, United States Department of Agriculture, Agricultural Research Service, P.O. Box 350, Stoneville, MS 38776
Kelly Whiting
Affiliation:
Deltapine Seed, Scott, MS 38772
*
Corresponding author's E-mail: [email protected].
Get access Rights & Permissions [Opens in a new window]

Abstract

A field study was conducted over 2 yr to compare efficacy and economics of glyphosate-resistant, sulfonylurea-tolerant, and conventional soybean (Glycine max) weed control programs. Herbicide programs in the three soybean systems provided at least 90% control of browntop millet (Brachiaria ramosa), prickly sida (Sida spinosa), yellow nutsedge (Cyperus esculentus), pitted morningglory (Ipomoea lacunosa), and hemp sesbania (Sesbania exaltata) in most cases and postemergence (POST)-only programs were as effective as preemergence (PRE) followed by POST programs. Control of hyssop spurge (Euphorbia hyssopifolia) ranged from 93 to 100% in glyphosate-resistant soybean and from 88 to 100% in conventional soybean, but control was 60 to 100% in sulfonylurea-tolerant soybean. Sicklepod (Senna obtusifolia) control was at least 91% in glyphosate-resistant and sulfonylurea-tolerant soybean but was 81% for the standard SAN 582 plus imazaquin PRE and acifluorfen plus bentazon early POST treatment in conventional soybean. In glyphosate-resistant soybean, glyphosate applied sequentially resulted in an average yield of 3,020 kg/ha with a net return of $407/ha. In sulfonylurea-tolerant soybean, chlorimuron applied sequentially yielded 2,500 kg/ha with a net return of $271/ha. Conventional soybean yield with the standard herbicide program was 2,770 kg/ha with a net return of $317/ha. Yields for the cultivars were equivalent when the same standard herbicide program was used. When weed control is satisfactory and herbicide costs relatively comparable, yield potential of the cultivar and seed cost, including any technology fee, would be key factors in selecting a weed management system.

Keywords

glyphosate, N-(phosphonomethyl) glycinebrowntop millet, Brachiaria ramosa (L.) Stapf # PANRAhyssop spurge, Euphorbia hyssopifolia L. # EPHHSpitted morningglory, Ipomoea lacunosa L. # IPOLAprickly sida, Sida spinosa L. # SIDSPsicklepod, Senna obtusifolia (L.) Irwin and Barneby # CASOByellow nutsedge, Cyperus esculentus L. # CYPESCASOBCYPESEPHHSIPOLAPANRASEBEXSIDSPEPOST, early postemergencefb, followed byLPOST, late postemergencePOST, postemergencePRE, preemergenceWAP, weeks after planting
Type
Research
Information
Weed Technology , Volume 14 , Issue 1 , March 2000 , pp. 204 - 211
Copyright
Copyright © Weed Science Society of America 

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

Literature Cited

Anonymous. 1997. Soybeans 1998 Planning Budgets. Mississippi State, MS: Mississippi Agricultural and Forestry Experiment Station and Mississippi Cooperative Extension Service, Mississippi State University Agricultural Economics Report 87. 116 p.Google Scholar
Anonymous. 1998. Soybeans 1999 Planning Budgets. Mississippi State, MS: Mississippi Agricultural and Forestry Experiment Station and Mississippi Cooperative Extension Service, Mississippi State University Agricultural Economics Report 97. 110 p.Google Scholar
Anonymous. 1999. Soybean Variety Trials 1998. Mississippi State, MS: Mississippi Agricultural and Forestry Experiment Station, Mississippi State University Information Bulletin 346. 70 p.Google Scholar
Askew, S. D., Shaw, D. R., and Street, J. E. 1998. Red rice (Oryza sativa) control and seedhead reduction with glyphosate. Weed Technol. 12: 504–506.Google Scholar
Ateh, C. M. and Harvey, R. G. 1999. Annual weed control by glyphosate in glyphosate-resistant soybean (Glycine max). Weed Technol. 13: 394–398.Google Scholar
Claus, J. S. 1987. Chlorimuron-ethyl (Classic)®: a new broadleaf postemergence herbicide in soybean. Weed Technol. 1: 114–115.Google Scholar
Culpepper, A. S., York, A. C., Batts, R. B., and Jennings, K. M. 1997. Sicklepod (Senna obtusifolia) management in an ALS-modified soybean (Glycine max). Weed Technol. 11: 164–170.Google Scholar
Ghosheh, H. Z. and Chandler, J. M. 1998. Johnsongrass (Sorghum halepense) control systems for field corn (Zea mays) utilizing crop rotation and herbicides. Weed Technol. 12: 623–630.CrossRefGoogle Scholar
Gonzini, L. C., Hart, S. E., and Wax, L. M. 1999. Herbicide combinations for weed management in glyphosate-resistant soybean (Glycine max). Weed Technol. 13: 354–360.CrossRefGoogle Scholar
Johnson, W. G., Kendig, J. A., Massey, R. E., DeFelice, M. S., and Becker, C. D. 1997. Weed control and economic returns with postemergence herbicides in narrow-row soybeans (Glycine max). Weed Technol. 11: 453–459.Google Scholar
McKinley, T. L., Roberts, R. K., Hayes, R. M., and English, B. C. 1999. Economic comparison of herbicides for johnsongrass (Sorghum halepense) control in glyphosate-tolerant soybean (Glycine max). Weed Technol. 13: 30–36.Google Scholar
Miller, D. K., Jordan, D. L., Griffin, J. L., and Vidrine, P. R. 1997. Herbicide management systems for sicklepod control in Roundup Ready soybeans. Proc. South. Weed Sci. Soc. 50:38.Google Scholar
Monks, C. D., Wilcut, J. W., and Richburg, J. S. III. 1993. Broadleaf weed control in soybean (Glycine max) with chlorimuron plus acifluorfen or thifensulfuron mixtures. Weed Technol. 7: 317–321.Google Scholar
Moshier, L. J. and Freed, B. E. 1997. Performance of sulfonylurea tolerant soybean as influenced by weed control systems. Weed Sci. Soc. Am. Abstr. 37:91.Google Scholar
Nelson, K. A. and Renner, K. A. 1999. Weed management in wide- and narrow-row glyphosate resistant soybean. J. Prod. Agric. 12: 460–465.Google Scholar
Padgette, S. R., Kolacz, K. H., Delannay, X., et al. 1995. Development, identification, and characterization of a glyphosate-tolerant soybean line. Crop Sci. 35: 1451–1461.Google Scholar
Padgette, S. R., Re, D. B., Barry, G. F., Eichholtz, D. E., Delannay, X., Fuchs, R. L., Kishore, G. M., and Fraley, R. T. 1996. New weed control opportunities: development of soybeans with a Roundup Ready™ gene. In Duke, S. O., ed. Herbicide-Resistant Crops: Agricultural, Environmental, Economic, Regulatory, and Technical Aspects. Boca Raton, FL: CRC Press and Lewis Publishers. pp. 53–84.Google Scholar
Reddy, K. N. 1998. Weed management in no-till Roundup Ready soybeans. Proc. South. Weed Sci. Soc. 51:270.Google Scholar
Reddy, K. N., Heatherly, L. G., and Blaine, A. 1999. Weed management. In Heatherly, L. G. and Hodges, H., eds. Soybean Production in the Midsouth. Boca Raton, FL: CRC Press. pp. 171–195.Google Scholar
Roberts, R. K., Pendergrass, R., and Hayes, R. M. 1999. Economic analysis of alternative herbicide regimes on Roundup Ready soybeans. J. Prod. Agric. 12: 449–454.Google Scholar
Scott, R., Shaw, D. R., and Barrentine, W. L. 1998. Glyphosate tank mixtures with SAN 582 for burndown or postemergence applications in glyphosate-tolerant soybean (Glycine max). Weed Technol. 12: 23–26.Google Scholar
Sebastian, S. A., Fader, G. M., Ulrich, J. F., Forney, D. R., and Chaleff, R. S. 1989. Semidominant soybean mutation for resistance to sulfonylurea herbicides. Crop Sci. 29: 1403–1408.Google Scholar
Simpson, D. M. and Stoller, E. W. 1995. Response of sulfonylurea-tolerant soybean (Glycine max) and selected weed species to imazethapyr and thifensulfuron combinations. Weed Technol. 9: 582–586.Google Scholar
Smith, M. C., Shaw, D. R., and Shankle, M. W. 1998. Optimization of glyphosate rate and application timing for weed control in Mississippi glyphosate-tolerant soybean. Weed Sci. Soc. Am. Abstr. 38:8.Google Scholar
Vidrine, P. R., Reynolds, D. B., and Griffin, J. L. 1993. Weed control in soybean (Glycine max) with lactofen plus chlorimuron. Weed Technol. 7: 311–316.Google Scholar
Vidrine, P. R., Reynolds, D. B., and Blouin, D. C. 1995. Grass control in soybean (Glycine max) with graminicides applied alone and in mixtures. Weed Technol. 9: 68–72.Google Scholar
Webster, E. P., Bryant, K. J., and Earnest, L. D. 1999. Weed control and economics in nontransgenic and glyphosate-resistant soybean (Glycine max). Weed Technol. 13: 586–593.CrossRefGoogle Scholar
Wesley, M. T. and Shaw, D. R. 1992. Interactions of diphenylether herbicides with chlorimuron and imazaquin. Weed Technol. 6: 345–351.Google Scholar
Williams, B. 1999. Economics of soybean production in Mississippi. In Heatherly, L. G. and Hodges, H., eds. Soybean Production in the Midsouth. Boca Raton, FL: CRC Press. pp. 1–17.Google Scholar