1 Curriculum Vitae Jack Dekker Weed Biology Laboratory Agronomy

27 Pages·2013·0.2 MB·English

January 4, 2014

Curriculum Vitae

Jack Dekker
Weed Biology Laboratory
Agronomy Department
Iowa State University
Ames, Iowa 500ll
USA
[email protected]
[email protected]
__________________________________________________________________________________

Section Page
Career History 1
Publications 2
Student Theses 7
Invited Presentations 7
Voluntary Presentations 10
Research Reports 15
Other Contributions 22
Teaching 23
Extension 24
Service 24
Newspaper & Media 26
Awards & Recognition 26
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CAREER HISTORY

Education
Degree Institution Date granted
B.A., Anthropology Michigan State University l974
B.S., Agronomy University of Minnesota l977
M.S., Crop Science/Weed Science Michigan State University l978
Ph.D., Crop Science/Weed Science Michigan State University l980

Positions Held
l977-l980 Graduate Research Assistant Crop & Soil Sciences Dept., Michigan State University
l980-l984 Assistant Professor Crop Science Dept; University of Guelph, Ontario,
Canada; with tenure 1984.
l985-l986 Assistant Professor Dept. of Plant Pathology, Seed & Weed Sci., Iowa State
University
1986 Associate Professor Dept. of Plant Pathology, Seed & Weed Sci., Iowa State
University; with tenure
l986-2014 Associate Professor Dept. of Agronomy; Iowa State University
1989 Visiting Professor Botany Department, University of Wisconsin, Madison;
sponsor: Tom Sharkey
1993, 1994 Visiting Professor Dept. of Plant Physiology, Wageningen Agricultural
University, The Netherlands; sponsor: Cees Karsen
2000-2001 Visiting Professor Dept. of Plant and Microbial Biology, Univ. of California,
Berkeley; sponsor: Michael Freeling

Professional Affiliations

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Botanical Society of America International Society for Chronobiology
Ecological Society of America North Central Weed Science Society
European Weed Research Society Society for the Study of Evolution
International Society for Seed Science Weed Science Society of America

Iowa State University Affiliations
Agronomy Department: Crop Production and Physiology Faculty
Interdepartmental Graduate Programs Faculty:
Bioinformatics and Computational Biology
Complex Adaptive Systems
Ecology and Evolutionary Biology
Plant Physiology
Osborn Research Club

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PUBLICATIONS

Google Scholar Citations and Citation Index:
http://scholar.google.com/citations?user=70480ysAAAAJ&hl=en

Digital Respository @ Iowa State University:
http://lib.dr.iastate.edu/
Selected Works Author Gallery:
http://works.bepress.com/jdekker/
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Dekker, J. 2013. Seed dormancy, germination and seedling recruitment in weedy Setaria. In: Handbook
of Plant and Crop Physiology, 3rd Edition, Chapter 2, pp. 33-102; M. Pessarakli, Editor. Taylor
and Francis Group, CRC Press, Boca Raton, FL. (Accepted: In Press)
Altenhofen, L. and J. Dekker. 2013. The effects of light, temperature, after-ripening, nitrate and water
on Chenopodium album seed germination. Ecology and Environmental Sciences. (Accepted: In
Press)
Schutte, B.J., B.J. Tomasek, A.S. Davis, L. Andersson, D.L. Benoit, A. Cirujeda, J. Dekker, F.
Forcella, J.L. Gonzalez-Andujar, F. Graziana, A.J. Murdock, P. Neve, I.A. Rasmussen, B. Sera,
J. Salonen, F. Tei, K.S. Torresen. 2013. A framework for understanding stimulation of weed
seedling emergence by soil disturbance. Weed Research. (Accepted: In Press)
Andujar, J.G., D.L. Benoit, A. Davis, J. Dekker, F. Graziani, A. Grundy, L. Karlsson, A. Mead, P.
Milberg, P. Neve, I.A. Rasmussen, J. Salonen, B. Sera, E. Sousa, F. Tei, K.S. Torresen, J.M.
Urbano. 2013. Continental diversity of Chenopodium album seedling recruitment.
arXiv:1310.0483[q.bio.PE]. http://arxiv.org/abs/1310.0483
Dekker, J. 2013. Soil-weed seed communication systems. Universal Journal of Plant Science 1(1):9-20.
Dekker, J., D. Adams, A. van Aelst, B. Dekker, J. Donnelly, and M. Haar, M. Hargrove, H. Hilhorst,
C. Karssen, J. Lathrop, E. Luschei, and D. Todey. 2012. Weedy Setaria seed germination-
dormancy behavior: Regulatory compartmentalization. Lambert Academic Publishing,
Saarbrücken, Germany. ISBN: 978-3-659-24309-7
Donnelly, J., D. Adams, and J. Dekker. 2012. Does phylogeny determine the shape of the outer seed
hull in Setaria seeds? In: Dekker, J., D. Adams, A. van Aelst, B. Dekker, J. Donnelly, and M.
Haar, M. Hargrove, H. Hilhorst, C. Karssen, J. Lathrop, E. Luschei, and D. Todey. 2012.

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Weedy Setaria seed germination-dormancy behavior: Regulatory compartmentalization.
Lambert Academic Publishing, Saarbrücken, Germany. ISBN: 978-3-659-24309-7
Haar, M., A. van Aelst and J. Dekker. 2012. Micrographic analysis of Setaria faberi seed, caryopsis
and embryo germination. In: Dekker, J., D. Adams, A. van Aelst, B. Dekker, J. Donnelly, and
M. Haar, M. Hargrove, H. Hilhorst, C. Karssen, J. Lathrop, E. Luschei, and D. Todey. 2012.
Weedy Setaria seed germination-dormancy behavior: Regulatory compartmentalization.
Lambert Academic Publishing, Saarbrücken, Germany. ISBN: 978-3-659-24309-7
Dekker, J., B. Atchison, M. Haar, and K. Jovaag. 2012. Weedy Setaria seed life history:
Heterogeneous seed rain dormancy predicates seedling recruitment. Lambert Academic
Publishing, Saarbrücken, Germany. ISBN: 978-3-8454-7859-3
Haar, M.J. and J. Dekker. 2012. Seed rain dormancy structure in Setaria faberi. In: Dekker, J., B.
Atchison, M. Haar, and K. Jovaag. 2012. Weedy Setaria seed life history: Heterogeneous seed
rain dormancy predicates seedling recruitment. Lambert Academic Publishing, Saarbrücken,
Germany. ISBN: 978-3-8454-7859-3
Jovaag, K., J. Dekker, and B. Atchison. 2012. Setaria faberi seed heteroblasty blueprints seedling
recruitment: I. Seed dormancy heterogeneity at abscission. International Journal of Plant
Research 2(3): 46-56.
Jovaag, K., J. Dekker, and B. Atchison. 2012. Setaria faberi seed heteroblasty blueprints seedling
recruitment: III. Seedling recruitment behavior. International Journal of Plant Science 2(6):165-
180.
Jovaag, K., J. Dekker, and B. Atchison. 2011. Setaria faberi seed heteroblasty blueprints seedling
recruitment: II. Seed behavior in the soil. International Journal of Plant Research 1(1):1-10.
Dekker, J., H. MacKenzie, and K. Chandler. 2011. The effects of soil pH on Elymus repens growth
and tissue nutrients. Resources and Environment 1(1):20-25.
Haar, M.J. and J. Dekker. 2011. Seed production in weedy Setaria spp.-gp. Journal of Biodiversity
and Ecological Sciences 1(3):169-178.
Darmency, H. and J. Dekker. 2011. Setaria. In: Wild crop relatives: Genomic and breeding resources,
Millets and grasses, C. Kole (ed.); Wealth of Wild Species: Role in Plant Genome Elucidation and
Improvement, Vol 2.; Chapter 15, pp. 275-296;. Springer-Verlag Berlin, Heidelberg.
Dekker, J. 2011. Evolutionary models of weed life history population dynamics. In: Advances in
environmental research, Volume 10, pp. 143-165; J.A. Daniels (Ed.). Nova Science Publishers,
Hauppauge, NY.
Dekker, J. 2011. Evolutionary ecology of weeds.
http://www.agron.iastate.edu/~weeds/AG517/517Course/EEWbook.html
Dekker, J. 2009. FoxPatch: An evolutionary model system for weedy Setaria spp.-gp. seed life history
dynamics. XIIIth International Conference on Weed Biology, Dijon, France. Association
Française pour la Protection des Plantes Annales: 117-127.
Dekker, J. and E.C. Luschei. 2009. Water partitioning between environment and Setaria faberi seed
exterior-interior compartments. Agriculture Journal 4(2):66-76.
Dekker, J., H. MacKenzie and K. Chandler. 2006. The effects of soil pH on Setaria viridis and
Abutilon theophrasti seedling growth and tissue nutrients. Agriculture Journal 1(1):1-4.
Dekker, J. 2005. Biology and anthropology of plant invasions. In: Invasive plants: ecological and
agricultural aspects; Inderjit (Ed.). Birkhäuser Verlag BioSciences, Basel. Pp. 235-250.
Dekker, J. 2004b. Invasive plant life history determinants of yield in disturbed agro-ecosystems. XIIth
International Conference on Weed Biology, Dijon, France. Association Française pour la
Protection des Plantes Annales: 5-14.
Dekker, J. 2004a. The evolutionary biology of the foxtail (Setaria) species-group. In: Weed Biology
and Management; Inderjit (Ed.). Kluwer Academic Publishers, The Netherlands. Pp. 65-113.

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Dekker, J, B. Atchison and K Jovaag. 2003. Setaria spp. seed pool formation and initial assembly in
agro-communities. Aspects of Applied Biology 69:247-259.
Dekker, J. 2003. The foxtail (Setaria) species-group. Weed Science 51:641-646.
Tranel, D. and J. Dekker. 2002. Differential seed germinability in triazine-resistant and -susceptible
giant foxtail (Setaria faberii). Asian Journal of Plant Sciences 1(4):334-336.
Dekker J., M.Hargrove. 2002. Weedy adaptation in Setaria spp.: V. Effects of gaseous environment
on giant foxtail (Setaria faberii R. Hermm.) (Poaceae) seed germination. American Journal of
Botany 89(3):410-416.
Dekker, J., J. Lathrop, B. Atchison, and D. Todey. 2001. The weedy Setaria spp. phenotype: How
environment and seeds interact from embryogenesis through germination. Proceedings of the
Brighton Crop Protection Conference-Weeds 2001:65-74.
Dekker, J. 2000. Emergent weedy foxtail (Setaria spp.) seed germinability behavior. In: Seed
Biology: Advances and Applications (M. Black, K.J. Bradford, and J. Vasquez-Ramos, Eds).
CAB International International, Wallingford, UK, pp. 411-423.
Dekker, J. 1999. Ethics and choice of research topics in the public sector. Weed Science 47:629-630.
Dekker, J. 1999. Soil weed seed seed banks and weed management. "Expanding the Context of Weed
Management", D. Buhler (Ed.), Haworth Press Inc. New York. Simulataneously published in:
Journal of Crop Production 2(1):139-166.
Luschei, E.C., D.D. Buhler, and J. Dekker. 1998. Effect of separating giant foxtail (Setaria faberi)
seeds from soil using potassium carbonate and centrifugation on viability and germination.
Weed Science 46:545-548.
Forcella, F., R.G. Wilson, J. Dekker, R.J. Kremer, J. Cardina, R.L. Anderson, D. Alm, K.A.
Renner, R.G. Harvey, S. Clay, and D.D. Buhler. 1997. Weed seed bank emergence
across the corn belt. Weed Science 45:67-76.
Dekker, J. 1997. Weed diversity and weed management. Weed Science 45:357-363.
Dekker, J., B.I. Dekker, H. Hilhorst and C. Karssen. 1996. Weedy adaptation in Setaria spp.: IV.
Changes in the germinative capacity of S. faberii embryos with development from anthesis to
after abscission. American Journal of Botany 83(8):979-991.
Wang, R.L, J. Wendell and J. Dekker. 1995a. Weedy adaptation in Setaria spp.: I. Isozyme analysis of
the genetic diversity and population genetic structure in S. viridis.. American Journal of Botany
82(3):308-317.
Wang, R.L, J. Wendell and J. Dekker. 1995b. Weedy adaptation in Setaria spp.: II. Genetic diversity
and population genetic structure in S. glauca, S. geniculata and S. faberii. American Journal of
Botany 82(8):1031-1039.
Wang, R.L. and J. Dekker. 1995. Weedy adaptation in Setaria spp.: III. Variation in herbicide
resistance in Setaria spp. Pesticide Biochemistry and Physiology 51:99-116.
Dekker, J. and S.O. Duke. 1995. Herbicide resistance in field crops. Advances in Agronomy 54:69-
116.
Dekker, J. 1993. Pleiotropy in triazine resistant Brassica napus: Leaf and environmental influences on
photosynthetic regulation. Zeitschrift Naturforschung 48c:283-287.
Thornhill, R. and J. Dekker. 1993. Mutant weeds of Iowa: V. S-triazine resistant Giant Foxtail
(Setaria faberii Hermm.). Journal of the Iowa Academy of Science 100:13-14.
Dekker, J.H. and R.G. Burmester. 1993. Pleiotropy in triazine resistant Brassica napus: Differential
stomatal and leaf responses to the environment. In: Research in photosynthesis, N. Murata
(Ed.), Vol. IV:631-634. Kluwer Academic Publishers, Dordrecht, The Netherlands.
Dekker, J. and G. Comstock. 1992. Ethical, environmental and ecological considerations in the release
of herbicide resistant crops. Agriculture and Human Values 9(3):31-44.
Dekker, J.H. and R.G. Burmester. 1992. Pleiotropy in triazine resistant Brassica napus: Ontogenetic

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and diurnal influences on photosynthesis. Plant Physiology 100:2052-2058.
Dekker, J. and T. D. Sharkey. l992. Regulation of photosynthesis in triazine resistant and susceptible
Brassica napus. Plant Physiology 98:1069-1073.
Dekker, J. 1992. Pleiotropy and photosynthetic regulation in triazine resistant Brassica napus.
Photosynthesis Research 34:235.
Forcella, F., R.G. Wilson, K.A. Renner, J. Dekker, R.G. Harvey, D.A. Alm, D.D. Buhler and J.A.
Cardina. 1992. Weed seedbanks of the U.S. corn belt: magnitude, variation, emergence, and
application. Weed Science 40:636-644.
Tranel, P. and J. Dekker. 1992. Inheritance of clomazone resistance in maize seedlings. Maydica
37:137-142.
Dekker, J. 1991. An overview of new techniques and advances in weed physiology and molecular
biology. Weed Science 39: 480-481.
Akey, W. C., T. W. Jurik and J. Dekker. l991. A replacement series evaluation of competition
between velvetleaf (Abutilon theophrasti) and soybean (Glycine max). Weed Research 31:63-
72.
Dekker, J., R. Burmester and J. Wendel. l991. Mutant weeds of Iowa: S-triazine resistant Polygonum
pensylvanicum L. Weed Technology 5:211-213
Akey, W. C., T. W. Jurik and J. Dekker. l990. Competition for light between velvetleaf (Abutilon
theophrasti) and soybean (Glycine max). Weed Research 30:403-411.
Dionigi, C. P. and J. H. Dekker. l990. The effects of tridiphane on the growth and structure of
soybean leaf tissue. Pesticide Biochemistry and Physiology 37:287-292.
Dekker, J. and R. G. Burmester. l990. Differential pleiotropy in a psbA gene mutant of Brassica
napus implies altered temporal photosynthesis and thermal tolerance. Zeitschrift fur
Naturforschung 45c:474-477.
Dekker, J. and R. G. Burmester. l990. Differential diurnal photosynthetic function in a psbA plastid
gene chronomutant of Brassica napus L. In: Chronobiology: Its role in clinical medicine,
general biology and agriculture; Pt. B., Cellular and Molecular Mechanisms. Eds. D. Hayes, J.
E. Pauly and R. J. Reiter. Pp. 243-25l. Wiley-Liss, N.Y., N.Y.
Dekker, J. and R. G. Burmester. l989. Differential diurnal carbon exchange and photoinhibition in a
psbA plastid gene chronomutant of Brassica napus. In: Current Research in Photosynthesis, M.
Baltscheffsky (Ed.), Kluwer Academic Publishers, Dordrecht, The Netherlands, Vol.
IV(l6):263-266.
Dekker, J. and R. G. Burmester. l989. Differential diurnal photosynthesis in a psbA gene
chronomutant of Brassica napus. Physiologia Plantarum 76:l82.
Dekker, J. and R. Burmester. l989. Mutant weeds of Iowa: s-triazine resistant plastids in
Chenopodium album L. Journal of the Iowa Academy of Science 96:6l-64.
Dekker, J. and R. Burmester. l989. Differential diurnal photosynthetic function and regulation in a
psbA plastid gene chronomutant of Brassica napus. Chronobiologica l6:l27.
Blackshaw, R. E., G. Walker and J. Dekker. 1989. Interference among Sinapis arvensis,
Chenopodium album and Brassica napus. II. Interference for light. Phytoprotection 70:7-l4.
Blackshaw, R. E. and J. Dekker. 1988. Interference among Sinapis arvensis, Chenopodium album
and Brassica napus. I. Yield response and interference for nutrients and water.
Phytoprotection 69:l05-l20.
Dekker, J. and R. Burmester. l988. Fluorometric determination of in vivo p-halohydroxybenzonitrile
detoxification kinetics in Zea mays. Analytical Letters 2l(ll):2077-2089.
Harker, K. N. and J. Dekker. l988. Temperature effects on translocation patterns of several herbicides
within quackgrass (Agropyron repens). Weed Science 36:545-552.
Harker, K. N. and J. Dekker. l988. Effects of phenology on translocation patterns of several

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herbicides within quackgrass (Agropyron repens). Weed Science 36:463-472.
Walker, G. K., R. E. Blackshaw and J. Dekker. l988. Leaf area and competition for light between plant
species using direct sunlight transmission. Weed Technology 2:l59-l65.
Menkveld, J. W. and J. H. Dekker. l988. Persistence of EPTC+ and Butylate+ in Butylate+ acclimatised
Soils. Phytoprotection 69:23-30.
Sikkema, P. H. and J. H. Dekker. l987. Use of infrared thermometry in determining critical stress
periods induced by quackgrass (Agropyron repens) in soybeans (Glycine max). Weed Science
35:784-79l.
Dekker, J., R. Burmester, K. C. Chi and L. Jensen. l987. Mutant Weeds of Iowa: s-triazine resistant
plasids in Kochia scoparia. Iowa Journal of Research 62:l83-l88.
Harvey, R. G., J. H. Dekker, R. S. Fawcett, F. W. Roeth and R. G. Wilson. l987. Enhanced
biodegradation of herbicides in soil and effects on weed control. Weed Technology l:34l-349.
Dekker, J. and K. C. Vaughn. l987. An adaptive advantage of triazine resistance: A temporal phase
mutation of photosynthetic function. Chronobiologica l4:49.
Dekker, J. and R. G. Dekker. l987. Mutant Weeds of Iowa: Fasciation in Taraxacum officinale.
Phytologia 63:l55-l56.
Dekker, J. and B. Westfall. l987. Circadian oscillations in chlorophyll fluorescence in a triazine-
resistant chronomutant of Brassica napus. J. E. Pauly and L. E. Schering(eds.), In: Progress in
Clinical and Biological Research. Advances in Chronobiology Pt. A., Pp. 8l-93. Alan R. Liss,
Inc., New York.
Blackshaw, R. E., G. W. Anderson and J. Dekker. l987. Interference of Sinapis arvensis L. and
Chenopodium album L. in spring rapeseed (Brassica napus L.). Weed Research 27:207-213.
Dekker, J. H. and B. Westfall. l987. A temporal phase mutation of chlorophyll fluorescence in triazine
resistant Brassica napus. Zeitschrift fur Naturforschung 42c:l35-l38.
Dekker, J. H. and W. F. Meggitt. l986. Field emergence of velvetleaf (Abutilon theophrasti) in
relation to time and burial depth. Iowa State Journal of Research 6l(1):65-80.
Dekker, J. H. and K. N. Harker. l985. Comparative efficacy of several graminicides in controlling
Elymus repens. Proc. l985 British Crop Prot. Conf., Brighton: Weeds 2:47l-478.
Dekker, J. H. and K. Chandler. l985. Effects of several graminicides on the viability of quackgrass
(Agropyron repens) rhizome buds. Canadian Journal of Plant Science 65:l057-l064.
Ezra, G., J. H. Dekker and G. R. Stephenson. l985. Tridiphane as a synergist for herbicides in corn
(Zea mays L.) and Proso millet (Panicum miliaceum L.). Weed Science 33:287-290.
Dekker, J. H. l983. Annual weed control in triazine tolerant rapeseed. Proc. 6th Int'l. Rapeseed Conf.,
Paris. Pp. l239-l244.
Dekker, J. H., W. F. Meggitt and A. R. Putnam. l983. Experimental methodologies to evaluate
alleleopathic plant interactions: the Abutilon theophrasti-Glycine max model. Journal of
Chemical Ecology 9:945-98l.
Dekker, J. H. and W. F. Meggitt. l983. Interference between velvetleaf (Abutilon theophrasti (L.)
Medic.) and soybeans (Glycine max (L.) Merr.). I. Growth. Weed Research 23:9l-l0l.
Dekker, J. H. and W. F. Meggitt. l983. Interference between velvetleaf (Abutilon theophrasti (L.)
Medic.) and soybeans (Glycine max (L.) Merr.). II. Population dynamics. Weed Research
23:l03-l07.
Dekker, Jack, W. F. Meggitt, P. F. Boldt. l98l. Soil herbicidal activity from postemergence HOE
29l52 and diclofop. Weed Science 29:3l4-3l6.
Dekker, Jack. 1981. Proso Millet. Ontario Ministry of Agriculture and Food, Canada.
Dekker, J. 1980. Interference between velvetleaf (Abutilon theophrasti Medic.) and soybeans (Glycine
max (L.) Merrill). Ph.D. Thesis, Michigan State University.

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Dekker, J. H. and William F. Meggitt. l979. Laboratory Manual for Weed Science. 2nd ed. Michigan
State University Press.
Dekker, J. H. and William F. Meggitt. l978. Laboratory Manual for Weed Science. lst ed. Michigan
State University Press.

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STUDENT THESES

Akey, William. 1989. The role of competition for light in interference between velvetleaf (Abutilon
theophrasti) and soybean (Glycine max). Ph.D. Thesis, Crop Production and Physiology,
Agronomy, Iowa State University.
Altenhofen, L. 2009. The effects of light, temperature, after-ripening, nitrate and water on
Chenopodium album seed germination. M.S. Thesis, Ecology and Evolutionary Biology Inter-
departmental Graduate Program and Agronomy Department, Iowa State University, Ames.
Atchison, Bradley G. 2001. Relationship between foxtail (Setaria spp.) primary dormancy at seed
abscission and subsequent seedling emergence. M.S. thesis, Interdepartmental Ecology and
Evolutionary Biology, Iowa State University.
Blackshaw, Robert. 1986. The use of a tri-specific replacement series to measure interference among
Sinapis arvensis, Chenopodium album, and Brassica napus. Ph.D. thesis, Crop Science-Weed
Science, University of Guelph, Ontario, Canada.
Dionigi, Chris. 1989. Characterization of the joint effects of tridiphane and paraquat on soybeans.
Ph.D. thesis, Crop Production and Physiology, Agronomy; Iowa State University
Haar, Milt. 1998. Characterization of foxtail (Setaria spp.) seed production and giant foxtail (S. faberi)
seed dormancy at abscission. Ph.D. thesis, Interdepartmental Plant Physiology; Iowa State
University.
Harker, Neil. 1987. Herbicide and sucrose translocation patterns in quackgrass (Agropyron repens).
Ph.D. thesis, Crop Science-Weed Science, University of Guelph, Ontario, Canada.
Jovaag, Kari Ann. 2006. Life history of weedy Setaria species-group. Ph.D. thesis; Interdepartmental
Ecology & Evolutionary Biology Program and Statistics Department; Iowa State University.
Menkveld, J. William. 1990. Factors affecting degradation rates of thiocarbamate herbicides in Ontario
soils. M.S. thesis, Crop Science Department, University of Guelph, Ontario, Canada
Sikkema, Peter H. 1982. Determination of critical quackgrass (Agropyron repens) induced stress
periods in soybeans (Glycine max) with infrared thermometry. M.S. thesis, Crop Science-Weed
Science, University of Guelph, Ontario, Canada.
Thornhill, Randall G. 1997. The effect of temperature and moisture on germination of giant foxtail
(Setaria faberi) seeds, caryopses and embryos. M.S. thesis, Interdepartmental Plant Physiology;
Iowa State University.
Wang, Rong-Lin. 1994. Weedy adaptation in Setaria spp.: Genetic diversity, population genetic
structure and variation in herbicide resistance. Ph.D. thesis, Interdepartmental Plant Physiology;
Iowa State University.
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INVITED PRESENTATIONS

Dekker, J. 2010. Seed heteroblasty: how weeds exploit local opportunity. Proceedings of the15th
European Weed Research Society Symposium:58; Kaposvar, Hungary.

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Dekker, J. 2009. FoxPatch: An evolutionary model system for weedy Setaria spp.-gp. seed life history
dynamics. XIIIth International Conference on Weed Biology; Association Française pour la
Protection des Plantes Annales; Dijon, France; September.
Dekker, J. 2007. Weed population dynamics and the effects of climate change on the weed flora.
Department of Crop Production Ecology, Swedish University of Agricultural Sciences,
Uppsala.
Dekker, J. 2007. How to use modeling in plant biology research. Department of Crop Production
Ecology, Swedish University of Agricultural Sciences, Uppsala.
Dekker, J. 2006. FoxPatch - A model driven by inherent biological mechanisms. IN: Using models for
understanding weed biology, Workshop on modeling weed population dynamics, Oct. 24-26,
Research Center Flakkebjerg, Danish Institute of Agricultural Sciences, European Weed
Research Society.
Dekker, J. and K. Jovaag. 2005. Patterns in Setaria seedling emergence. Proceedings of the 13th EWRS
Symposium, Abstract 078, Bari, Italy.
Dekker, J. 2004. Invasive plant life history determinants of yield in disturbed agro-ecosystems. AFPP
(Association Francaise pour la Protection des Plantes); Proceedings of the 12th International
Conference on Weed Biology 5-14.
Dekker, J. 2004. . Current perspective in weed biology research. Seminar to the faculty of INRA
(Institut National de la Recherche Agronomique), Dijon, France.
Dekker, J. 2003. Predicting foxtail (Setaria spp.-gp.) seedling emergence with FoxPatch. Crop
Production and Physiology Seminar, Agronomy Dept., ISU.
Dekker, J. 2001. The weedy foxtails (Setaria spp.-gp.). Seminar to Dept. of Plant and Microbial
Biology, Univ. of California-Berkeley.
Dekker. J. 2000. Toward the mathematics of weedy foxtail seed behavior. Seminar for the Complex
Adaptive Systems Workshop, Iowa St. Univ.
Dekker. J. 2000. Salt-tolerant foxtail (Setaria spp.-gp.) germplasm. Seminar to Dept. of Plant Science,
Osaka Prefecture Univ., Sakai, Osaka, Japan.
Dekker, J. 1999a. Ethics and choice of research topics in the public sector. Symposium on Ethics in
Weed Science, WSSA, Annual meeting, San Diego, CA.
Dekker. J. 1998. Weedy foxtail (Setaria spp.-gp.) seed dormancy. Seminar for the Complex
Adaptive Systems Workshop, Iowa St. Univ.
Dekker, J. 1999b. Emergent foxtail (Setaria) spp. seed behavior: A complex, hierarchical and network
system. Proceedings of the 6th International Workshop on Seeds, Merida, Yucatan, Mexico.
Dekker, J., E. Luschei, and D. Buhler. 1999. Autumnal germination phenotype predicts giant foxtail
(Setaria faberii) seedling emergence. 6th International Workshop on Seeds, Merida, Yucatan,
Mexico.
Dekker, J. 1997. Variability in weeds: Why herbicides and other forms of weed management always
fail. Symposium on Ecological Variability and Modern Weed Management, North Central
Weed Science Society Meeting, Louisville, KY. NCWSS Proceedings 52:173-174.
Dekker, J. 1997. Weed seed banks, dormancy and management. Keynote address to the Mexican Weed
Science Society (ASOMECIMA) Meeting, Cuernavaca, Morelos, Mexico.
Dekker, J. 1996. The impact of 50 years of herbicide technology. Seminar for the Department of
Botany and Environmental Studies Program, University of Kansas, Lawrence, KS. Monday,
Feb. 19, 1996
Dekker, J. 1996. Complexity and weed seed banks. Seminar for the Department of Botany, University
of Kansas, Lawrence. KS. Tuesday, Feb. 20, 1996.

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Dekker, J. 1996. Utilization of weed diversity studies in weed biology for weed management. A talk
given in a symposium on the importance of Weed Biolgy to Weed Management at the annual
WSSA meeting. WSSA Abstracts 36.
Dekker, J. 1995. Herbicides, biotechnology, weeds and the food we eat. A talk given at the American
Dietetic Association Annual meeting, Symposium on Less Agrichemicals: Reviewing the
options. October, Chicago, IL.
Dekker, J. 1995. The behavior of seeds: a model of germinability, dormancy and germination. Plant
Physiology Dept., Agricultural University, Wageningen, The Netherlands. October, 1995.
Dekker, J. 1995. Bioethics in the Life Science classroom: The Iowa State University Model.
Workshop on Ethical Issues in Crop Protection. Iowa Academy of Science Meeting, April 21,
Wartburg College, Waverly, Iowa.
Dekker. 1995. Bioethics and herbicide resistant crops. Bioethics Symposium, Workshop on Plants.
Iowa State University Bioethics Program, April 29, Ames, Iowa.
Dekker, J., B. Dekker, H. Hilhorst, and C. Karssen. 1994. Multiple gerninability-dormancy states in
Setaria faberii: Changes in embryos with development from anthesis to after-ripening. 1st
International Plant Dormancy Symposium, Corvallis, OR. August, 1994.
Haar, M. and J. Dekker. 1994. Somatic polymorphism in Setaria faberii: Germination-dormancy states
at abscission. 1st International Plant Dormancy Symposium, Corvallis, OR. August, 1994
Dekker, J. 1993. Multiple germinability-dormancy states in giant foxtail (Setaria faberii). Plant
Physiology Dept., Agricultural University, Wageningen, The Netherlands. December, 1993.
Dekker, J.H. 1992. Allelochemical effects of corn gluten meal. Life Science Laboratory, Mitsui Toatsu
Chemicals, Inc., Mobara City, Japan). September, 1992.
Dekker, J.H. 1992. Population Biology of Setaria spp. Czechoslovakian Academy of Science,
Botanical Institute, Pruhonice, Czechoslovakia). September, 1992.
Dekker, J. 1991. Physiological adaptations by weeds to agroecosystems. XII Congreso Nacional de la
Ciencia de la Maleza. Acapulco, Mexico; November, 1991.
Dekker, J. 1991. Utilization of weed biology research information to solve crop production problems.
XII Congreso Nacional de la Ciencia de la Maleza. Acapulco, Mexico; November, 1991.
Dekker, J. 1991. Strategies to discover seed dormancy mechanisms in the Setaria species-group.
Interdepartmental Plant Physiology Program Seminar.
Dekker, J. l988. Chrono-shifts in plant functions: An ecological mechanism of adaptation for psbA
gene mutants in natural communities. Seminar for the Botany Department. Iowa State
University, Ames.
Dekker, J. l988. Breeding maize for metabolic resistance to herbicides. Seminar for Plant Breeding,
Agronomy Department, Iowa State University, Ames.
Dekker, J. l988. Molecular and subcellular plastid reorganization differentially regulates
photosynthesis in Brassica napus psbA gene mutants. Seminar for the Molecular, Cellular and
Developmental Biology Program. Iowa State University, Ames.
Dekker, J. H. l987. A temporal phase shift in photosynthetic function in triazine resistant Brassica
napus: Ecological and regulatory implications. Seminar at Zoecon Research Institute, Palo
Alto, CA., December l987.
Dekker, J. H. l986. Relationships between biological function in Agropyron repens to the molecular
structure of several graminicides. Seminar to Herbicide Synthesis Group, Stauffer Chemical
Co., Richmond, Calif. and to Herbicide Development, Mt. View, Calif., January l986.
Dekker, J. and B. Westfall. l985. Changes in chlorophyll fluorescence in triazine resistant and
susceptible Brassica napus. XVII International Society for Chronobiology, Little Rock, AR.

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Dekker, J. H. l985. Long term effects of several herbicides on quackgrass (Elymus repens (L.) Gould).
Part of an international symposium on the long term control of Elymus (Agropyron) repens,
Imperial Chemicals Industries, London, November l985.
Dekker, J. H. l985. Quackgrass interference in soybeans. Monsanto Corp. Quackgrass Seminar,
Winnipeg, October l985.
Dekker, J. H. l984. Butylate history soils in Ontario. Soil Conditioning Seminar, Stauffer Chemical
Co., Richmond, California, August l984.
Dekker, J. H. l984. Biology, physiology and control of quackgrass in Ontario. Dept. of Plant Science
Seminar, Univ. of Manitoba, Winnipeg, December l984.
Dekker, J. H. l983. Quackgrass in Ontario. Main session of Expert Committee on Weeds meeting
Prince Edward Island, October l983.
Dekker, J. H. l983. Effects of several herbicides on plant movement as seen through time-lapse
cinematography. Depts. of Botany and Agronomy and Plant Genetics Seminar, Univ. of Minn.,
April l983.
Dekker, J. l982. Translocation patterns of several graminicides in quackgrass as indicated by bud
viability assays. Herbicide Physiology Section, Nissan Chemical Co., Tokyo, August l982.
Dekker, J. l982. Canadian Agriculture and Weed Control. A series of lectures delivered to the faculty
and student body of the Northeast Agricultural College, Harbin, Manchuria, China in August
l982.
__________________________________________________________________________________

VOLUNTARY PRESENTATIONS

Dekker, J. and J. Gilbert. 2008. Interaction of salt, temperature, light and dormancy affecting giant
foxtail (Setaria faberi) seed germination. WSSA Abstracts 48:265.
Dekker, J., K. Jovaag and B. Atchison. 2007. Seed dormancy heteroblasty as a blueprint for
Setaria faberi seedling emergence. 14th Symposium of the European Weed Research
Society, Hamar, Norway.
Dekker, J., K. Jovaag, and B. Atchison. 2006. Seed dormancy heteroblasty as blueprint for
Setaria faberi seedling emergence. WSSA Abstracts 46:248, p.71.
Dekker, 2005. Weed life history plasticity. Invited seminar to the Ecology & Evolutionary
Biology 698 Seminar. March, 2005.
Dekker, J. 2004. Pleiotropic Effects of the psbA Chloroplast Gene in s-Triazine Resistant Plants.
Seminar in the Evolutionary Agroecology and Biocomplexity seminar series: Evolutionary
Trade-offs and Phenotypic Surprise; Agronomy Dept., Iowa State Univ.
Dekker, J., R.L. Wang, and J. Wendel. 2003. The population genetic structure of Setaria species
group. WSSA Abstracts 43:84.
Dekker, J., J. Lathrop, B. Atchison, and D. Todey. 2002. The weedy Setaria spp. phenotype: How
environment and seeds interact from embryogenesis through germination. Proceedings of the
European Weed Research Society 12:370-371.
Dekker, J. and M. Hargrove. 2000. Paradoxical action of carbon monoxide in foxtail (Setaria sp.)
seed germination. WSSA Abstracts 41:130-131.
Dekker, J. 1999. Agronomy 317LD: Introduction to Weed Science on the WWW. Poster presentation
to the 1999 North Central Teaching Symposium-Land-grant Tribal Colleges/Universities Joint
Meeting, Ames, Iowa.

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