Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-28T14:09:48.305Z Has data issue: false hasContentIssue false
  • English
  • Français

A Laboratory Exercise for Teaching Depth of Weed Emergence Concepts

Published online by Cambridge University Press:  20 January 2017

Lance Gibson  and
Matt Liebman
Lance Gibson*
Affiliation:
Department of Agronomy, Iowa State University, Ames, IA 50011
Matt Liebman
Affiliation:
Department of Agronomy, Iowa State University, Ames, IA 50011
*
Corresponding author's E-mail: lgibson@iastate.edu
Get access Rights & Permissions [Opens in a new window]

Abstract

The influence of weed seed burial depth on seedling emergence is a common and important topic in undergraduate weed science courses. A laboratory exercise was developed at Iowa State University to actively demonstrate changes in weed seedling emergence with increased seed-burial depth. Twenty-five ivyleaf morningglory and wild mustard seeds were sown in pots in monoculture, and the number of emerging seedlings was counted for 3 wk. The results from two semesters were analyzed to determine whether the experiment was successful in meeting its intended outcomes. Assessment of student perceptions and attitudes indicated that the activity increased students' understanding of weed biology; improved students' critical thinking, reading, and writing skills; and improved students' ability to make scientific observations, interpret graphical information, and analyze and summarize research data.

Keywords

Ivyleaf morningglory, Ipomoea hederacea (L.) Jacq. # IPOHEwild mustard, Brassica kaber (D.C.) L.C. Wheeler SINARBrassica kabereducationIPOHEIpomoea hederaceaSINARweed biologyweed ecology
Type
Education/Extension
Information
Weed Technology , Volume 18 , Issue 2 , June 2004 , pp. 473 - 479
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

[ASA, CSSA, SSSA] American Society of Agronomy, Crop Science Society of America, Soil Science Society of America. 1998. Publications Handbook and Style Manual. Madison, WI: ASA, CSSA, SSSA. 154 p.Google Scholar
Benvenuti, S. 2003. Soil texture involvement in germination and emergence of buried weed seed. Agron. J. 95:191–198.Google Scholar
Benvenuti, S., Macchia, M., and Miele, S. 2001. Quantatitive analysis of emergence of seedlings from buried weed seeds with increasing soil depth. Weed Sci. 49:528–535.Google Scholar
Buhler, D. D., Hartzler, R. G., and Forcella, F. 1997. Implications of weed seedbank dynamics to weed management. Weed Sci. 45:329–336.Google Scholar
Buhler, D. D. and Mester, T. C. 1991. Effect of tillage systems on the emergence depth of giant foxtail (Setaria faberi) and green foxtail (Setaria viridis). Weed Sci. 39:200–203.Google Scholar
Cardina, J., Herms, C. P., and Doohan, D. J. 2002. Crop rotation and tillage system effects on weed seedbanks. Weed Sci. 50:448–460.CrossRefGoogle Scholar
Cole, A. W. 1976. Tall morningglory response to planting depth. Weed Sci. 24:489–492.CrossRefGoogle Scholar
Cousens, R. and Moss, S. R. 1990. A model of the effects of cultivation on the vertical distribution of weed seeds within the soil profile. Weed Res. 30:61–70.CrossRefGoogle Scholar
Cussans, G. W., Raudonius, S., Brain, P., and Cumberworth, S. 1996. Effects of depth of seed burial and soil aggregate size on seedling emergence of Alopercurus myosuroides, Gallium aparine, Stellaria media and wheat. Weed Res. 36:133–141.CrossRefGoogle Scholar
Defelice, M. S. 2001. Tall morningglory, Ipomoea purpurea (L.) Roth—flower or foe. Weed Technol. 15:601–606.Google Scholar
Donald, W. W. and Hoerauf, R. A. 1985. Enhanced germination of dormant wild mustard (Sinapsis arvensis) seed by two substituted phthalimides. Weed Sci. 33:894–902.Google Scholar
du Croix Sissons, M. J., Van Acker, R. C., Derksen, D. A., and Thomas, A. G. 2000. Depth of seedling recruitment of five weed species measured in situ in conventional- and zero-tillage fields. Weed Sci. 48:327–332.CrossRefGoogle Scholar
Egley, G. H. 1986. Stimulation of weed seed germination in soil. Rev. Weed Sci. 2:67–89.Google Scholar
Elmore, C. D., Hurst, H. R., and Austin, D. F. 1990. Biology and control of morningglories (Ipomoea spp). Rev. Weed Sci. 5:83–114.Google Scholar
Gibson, L. R. and Liebman, M. 2003a. A laboratory exercise for teaching plant interference and relative growth rate concepts. Weed Technol. 17:394–402.Google Scholar
Gibson, L. R. and Liebman, M. 2003b. A laboratory exercise for teaching critical period for weed control concepts. Weed Technol. 17:403–411.CrossRefGoogle Scholar
Gomes, L. F., Chandler, J. M., and Vaughan, C. E. 1978. Aspects of germination, emergence, and seed production of three Ipomoea taxa. Weed Sci. 26:245–248.Google Scholar
Grundy, A. C. and Bond, W. 1998. Managing the weed seedbank. Nutr. Food Sci. 28:80–83.Google Scholar
Grundy, A. C., Mead, A., and Bond, W. 1996. Modeling the effect of weed-seed distribution in the soil profile on seedling emergence. Weed Res. 36:375–384.Google Scholar
Hoffman, M. L., Owen, M. D. K., and Buhler, D. D. 1998. Effects of crop and weed management on density and vertical distribution of weed seeds is soil. Agron. J. 90:793–799.Google Scholar
Hunt, R. 1982. Plant Growth Curves: The Functional Approach to Plant Growth Analysis. Baltimore, MD: University Park Press. 248 p.Google Scholar
Mohler, C. L. 2001. Mechanical management of weeds. in Liebman, M., Mohler, C. L., and Staver, C. P., eds. Ecological Management of Agricultural Weeds. Cambridge, UK: Cambridge University Press. Pp. 139–209.CrossRefGoogle Scholar
Mohler, C. L. and Galford, A. E. 1997. Weed seedling emergence and seed survival: separating the effects of seed position and soil modification by tillage. Weed Res. 37:147–155.Google Scholar
Prostko, E. P., Wu, H., Chandler, J. M., and Senseman, S. A. 1997. Modeling weed emergence as influenced by burial depth using the Fermi-Dirac distribution function. Weed Sci. 45:242–248.Google Scholar
Staricka, J. A., Buford, P. M., Allmaras, R. R., and Nelson, W. W. 1990. Tracing the vertical distribution of simulated shattered seeds as related to tillage. Agron. J. 82:1131–1134.Google Scholar
Steele, R. G. and Torrie, J. H. 1980. Principles and Procedures of Statistics. New York: McGraw-Hill. 672 p.Google Scholar
Wilson, H. P. and Cole, R. H. 1966. Morningglory competition in soybeans. Weeds. 14:49–51.Google Scholar
Yenish, J. P., Doll, J. D., and Buhler, D. D. 1992. Effects of tillage on vertical distribution and viability of weed seed in soil. Weed Sci. 40:429–433.Google Scholar