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Education:
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Ph.D.
Laval University, Quebec, Canada; Weed Science (Plant Biology) 1999
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M.S. Virginia
Polytechnic Institute, Blacksburg, Virginia, USA; Weed Science and Plant
Physiology 1990
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B.S.
University of Dschang, Cameroon; Agronomy (Crop Protection) 1986
Professional
Experience:
Associate Professor:
Department of Horticulture, Michigan State University, East Lansing, MI
USA - July 2007-present.
Assistant Professor :
Department of Horticulture, Michigan State University, East Lansing, MI USA -
July 2001-June 2007.
Postdoctoral Research Associate:
Department of Botany & Plant Sciences, University of California, Riverside
California, USA, June 1999 - June 2001.
Research Assistant:
Agriculture and Agri-Food Canada, Quebec, Canada, 1995-1999.
Assistant Professor:
Department of Crop Protection, University of Dschang, Cameroon, 1990-1995.
Research
Interests:
My general research
focus is on sustainable agriculture with special interest in vegetable
cropping systems. The ultimate goal of my program is to develop robust,
resilient, and profitable vegetable cropping systems. Our laboratory is
actively working to better understand how plant biodiversity (crop
rotation, cover cropping, soil amendment, etc.) and microclimate
modification (mulch films, row covers, irrigation, etc.) impact soil
chemical, physical, and biological properties as well as crop yield and
quality. In collaboration with colleagues from other departments, we
are also investigating the impact of cropping systems and crop
management practices on plant growth and development, weed, pest, and
disease dynamics; weed biology and ecology; weed-crop competition;
allelopathic interaction between plants.
Extension
Program:
The main objectives of my
extension program are to: 1) provide a rapid response to growers’ needs and 2)
use science-based information to improve vegetable production systems. Our team
works synergistically with colleagues, extension educators, and growers to
identify the needs and develop and test the solutions. I focus mainly on vine
crops (cucumbers, squash, melon etc.), asparagus, tomatoes, celery, onion,
carrots, eggplant, and peppers grown for processing or for fresh market. Our
team believes that the sustainability of vegetable cropping systems relies on
our ability to harness multiple tools with small but additive and positive
effects.
Selected publications:
Peer-reviewed publications
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Mennan H.,
M. Ngouajio, E. Kaya, and D. Isık. 2009. Weed management in
organically grown kale using alternative cover cropping systems. Weed
Technology 23(1):81-88.
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Isik D., E.
Kaya, M. Ngouajio, and H. Mennan. 2009. Summer Cover Crops for Weed
Management and Yield Improvement in Organic Lettuce (Lactuca sativa)
Production. Phytoparasitica 37(2):193-203.
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Isık D., E.
Kaya, M. Ngouajio, H. Mennan. 2009. Weed suppression in organic
pepper (Capsicum annuum L.) with winter cover crops. Crop Protection
28:356-363.
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Wang G.,
M. Ngouajio, M. E. McGiffen, Jr. C. M. Hutchinson. 2008. Summer cover
crop and in-season management system affect nitrogen availability and weed
density in lettuce and cantaloupe. Agronomy Journal 100:1587–1593.
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Wang G. and
M. Ngouajio. 2008. Integration of cover crop, conservation tillage,
and low herbicide rate for machine-harvested pickling cucumbers.
HortScience 43:1770-1774.
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Ngouajio M.,
R. Auras, R.T. Fernandez, M. Rubino, J.W. Counts Jr., and T. Kijchavengkul.
2008. Field performance of aliphatic-aromatic copolyester biodegradable
mulch films in a fresh market tomato production system. HortTechnology
18: 605-610.
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Wang G.,
M. Ngouajio, M. E. McGiffen, Jr. C. M. Hutchinson. 2008. Summer cover
crop and in-season management system affect growth and yield of lettuce and
cantaloupe. HortScience 43:1398-1403.
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Baributsa,
D., E. F. Foster, K. Thelen, A. Kravchenko, D. Mutch and M. Ngouajio.
2008. Corn and Cover Crop Response to Corn Density in an Interseeding
System. Agronomy Journal 100: 981–987.
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Ngouajio M.,
G. Wang, and R. G. Goldy. 2008. Timing of drip irrigation initiation affects
irrigation water use efficiency and yield of bell pepper under plastic
mulch. HortTechnology 18:397-402.
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Kijchavengkul T., R. Auras, M. Rubino, M. Ngouajio, R. T. Fernandez.
2008. Assessment of Aliphatic-Aromatic Copolyester Biodegradable Mulch
Films. Part II: Laboratory Simulated Conditions. Chemosphere
71:1607–1616.
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Kijchavengkul T., R. Auras, M. Rubino, M. Ngouajio, R. T. Fernandez.
2008. Assessment of Aliphatic-Aromatic Copolyester Biodegradable Mulch
Films. Part I: Field Study. Chemosphere 71:942–953.
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Melakeberhan H., S. Mennan, M. Ngouajio, and T. Dudek. 2008. Effect
of Meloidogyne hapla on multi-purpose use of oilseed radish (Raphanus
sativus). Nematology 10:375-379.
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Wang G.,
M. Ngouajio, and D.D. Warncke. 2008. Nutrient cycling, weed suppression,
and onion yield following brassica and sorghum sudangrass cover crops.
HortTechnology 18(1)68-74.
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Saidi M.,
M. Ngouajio, F.M. Itulya, and J. Ehlers. 2007. Leaf harvesting
initiation time and frequency affect biomass partitioning and yield of
cowpea (Vigna unguiculata (L) Walp). Crop Science
47:1159-1166. [Work featured on the cover of Crop Science].
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Hill E. C.,
M. Ngouajio, and M. G. Nair. 2007. Allelopathic potential of hairy
vetch (Vicia villosa) and cowpea (Vigna unguiculata) methanol
and ethyl acetate extracts on weeds and vegetables. Weed Technology,
21:437–444
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Tursun, N.,
B. Bükün, S. C. Karacan, M. Ngouajio, and H. Mennan. 2007. Critical
period for weed control in leek (Allium porrum L.). HortScience
42:106-109.
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Kavdira I.,
R. Lu, D. Ariana, and M. Ngouajio. 2007. Visible and near infrared
spectroscopy for nondestructive quality assessment of pickling cucumbers.
Postharvest Biology and Technology 44(2):165-174.
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Ngouajio M.,
G. Wang, and R. Goldy. 2007. Delaying onset of drip irrigation affects
growth and yield of fresh market tomato under plasticulture.
Agricultural Water Management 87: 285–291.
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Kijchavengkul T., R. Auras, M. Rubino, M. Ngouajio, R. T. Fernandez.
2006. Development of an Automatic Laboratory-Scale Respirometric System to
Measure Polymer Biodegradability. Polymer Testing 25:1006-1016.
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Ngouajio M.,
K. Delate, E. Carey, A.N. Azarenko, J.J. Ferguson, and W.J. Sciarappa.
2006. Curriculum Development for Organic Horticulture: Introduction.
HortTechnology 16:414-417.
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Biernbaum
J., L. Thorp, and M. Ngouajio. 2006. Development of a Year-round
Student Organic Farm and Organic Farming Curriculum at Michigan State
University. HortTechnology 16:432-436.
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Hill E.C.,
M. Ngouajio, and M.G. Nair. 2006. Differential response of weeds and
vegetable crops to aqueous extracts of hairy vetch (Vicia villosa)
and cowpea (Vigna unguiculata). HortScience 41(3):695-700.
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Ngouajio M.,
G. Wang, and M.K. Hausbeck 2006. Changes in Pickling Cucumber Yield and
Economic Value in Response to Planting Density. Crop Science
46:1570-1575.
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Mennan H.,
M. Ngouajio, D. Isık , and E. Kaya. 2006 Effects of alternative
management systems on weed populations in hazelnut (Corylus avellana
L.). Crop Protection 25:835–84.
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Kevin S.
C., M. Ngouajio, D. D. Warncke, K. L. Poff, and M. K. Hausbeck. 2006.
Integration of cover crops and fertilizer rates for weed management in
celery. Weed Science 54:326-334.
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Isik D., H.
Mennan, B. Bukun, A. Oz, and M. Ngouajio. 2006. The Critical Period
for Weed Control in Corn in Turkey. Weed Technology 20 :867-872.
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Mennan H.
and M. Ngouajio. 2006. Seasonal cycles in germination and seedling
emergence of summer and winter populations of catchweed bedstraw (Galium
aparine) and wild mustard (Brassica kaber). Weed Science
54:114–120.
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Davis A. S.
and M. Ngouajio. 2005. Introduction to the symposium beyond
thresholds: applying multiple tactics within integrated weed management
systems. Weed Science 53(3):368.
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Ngouajio M.
and H. Mennan. 2005. Weed populations and pickling cucumber (Cucumis
sativus) yield under summer and winter cover crop systems. Crop
Protection 24:521-526.
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Ngouajio M.
and J. Ernest. 2005. Changes in the physical, optical, and thermal
properties of polyethylene mulches during double cropping. HortScience
40(1)94-97.
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Ngouajio M.
2005. Historical perspective on weed control and pest management in
horticultural crops: Introduction. HortTechnology 15:508-510.
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Ogbuchiekwe
E. J., M. E. McGiffen, Jr., and M. Ngouajio. 2004. Economic return
in production of lettuce and cantaloupe is affected by cropping system and
management practice. HortScience 39:1321-1325.
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Ngouajio M.
and J. Ernest. 2004. Light Transmission Through Colored Polyethylene Mulches
Affects Weed Populations. HortScience 39:1302-1304.
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Ngouajio M.
and M.E. McGiffen, Jr. 2004. Sustainable vegetable production: Effects of
cropping systems on weed and insect population dynamics. Acta Hort.
638:77-83.
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McGiffen,
Jr., M.E., M. Ngouajio, D. Crowley, J. Borneman, C.M. Hutchinson.
2004. Soil organic amendments change low organic matter agroecosystems.
Acta Hort. 638:249-254.
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Ngouajio M.,
W. Kirk, and R. Goldy. 2003. A simple model for rapid and nondestructive
estimation of bell pepper fruit volume. HortScience 38(4):509-511.
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Ngouajio M.,
M. E. McGiffen, Jr., and C. M. Hutchinson. 2003. Effect of cover crop and
management system on weed populations in lettuce. Crop Protection
22(1):57-64.
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Ngouajio M.,
and M. E. McGiffen, Jr. 2002. Going organic changes weed population
dynamics HortTechnol. 12:590-596
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Ngouajio M.,
M. E. McGiffen Jr, S. Mansfield, and E. Ogbuchiekwe. 2001. Comparison of
methods to estimate weed populations and their performance in yield loss
description models. . Weed Science 49:385-394.
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Ngouajio M.,
M. E. McGiffen Jr., and K. J. Hembree. 2001. Tolerance of Lycopersicon
esculentum cultivars to Abutilon theophrasti interference.
Weed Science 49:91-98.
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Ngouajio M.,
C. Lemieux, and G. D. Leroux.
1999.
Prediction of corn (Zea mays) yield loss from early observations of
the relative leaf area and the relative leaf cover of weeds. Weed
Science 47:297-304.
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Ngouajio M.,
G. D. Leroux, and C. Lemieux.
1999. A
flexible sigmoidal model relating crop yield to weed relative leaf cover and
its comparison with nested models. Weed Research 39:329-343.
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Ngouajio M.,
G. D. Leroux, and C. Lemieux.
1999.
Influence of images recording height and crop growth stage on leaf cover
estimates and their performance in yield prediction models.
Crop Protection
18:501-508.
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Ngouajio M.,
C. Lemieux, J. J. Fortier, D. Careau, and G. D. Leroux.
1998.
Validation of an operator-assisted module to measure weed and crop leaf
cover by digital image analysis. Weed Technology 12:446-453.
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Ngouajio M.,
J. Foko, and D. Fouejio. 1996. The critical period of weed control in
common bean (Phaseolus vulgaris L.) in Cameroon. Crop Protection
16:127-133.
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Ngouajio M.
and E.S. Hagood. 1993. Weed control in corn (Zea mays) with
primisulfuron as influenced by rate, timing, and herbicide combinations.
Weed Technology 7:65-69.
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Ngouajio M.
and A. Daelemans. 1993. Effect of fluazifop and bentazon tank-mixed on weeds
and selected legume crops. Tropicultura 11:16-19.
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Ngouajio M.
and E.S. Hagood. 1992. Rate and timing effect of CGA-136872 on postemergence
johnsongrass control in corn. Tropicultura 10:43-45.
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Daelemans
A. and M. Ngouajio. 1992. Evaluation of weed control methods in corn
(Zea mays L.) in Cameroon. Med. Fac. Landbouww. Univ. Gent,
57/3b:1129-1134.
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Ngouajio M.
and E.S. Hagood. 1991. Differential response of corn (Zea mays L.)
to postemergence application of CGA-136872 at different growth stages.
Tropicultura 9 (4):147-150.
Book Chapters
Ngouajio M.
2002 and 2003. Chenopodium album: economic impact. In: Crop Protection
Compendium. Wallingford, UK: CAB International. Available on CD-ROM (ISSN
1365-9065) and Online at:
http://www.cabi.org/compendia/cpc/index.htm (ISSN 1478-7040).
Papers published in conference proceedings
Goldy R., M. Ngouajio, and J. Andresen. 2005. Irrigation scheduling in a
drip system. Proceedings 32nd National Agricultural Plastics
Congress Charleston, SC, March 5-8 p. 26-30.
McGiffen M. E., Jr., I. Lebron, M. Ngouajio, and C. M. Hutchinson. 2004.
A systems-level research approach to the performance of organic agriculture: a
case study. In Proceedings California Organic Production and Farming in
the New Millennium: A Research Symposium, Thursday July 15, 2004, International
House, Berkeley, CA. p.52-58. available at URL:
http://www.sarep.ucdavis.edu/Organic/CCBCfinal.pdf
Ngouajio M.,
E. Hill, M. Selvaraj, and K. Charles. 2004. New research trends in weed science
in the USA. Proceedings of the First Plant Protection Congress of Turkey,
September 8-10, 2004 Samsun, Turkey P.1-7.
Ngouajio M.,
R. Goldy, S. Snapp, and B. H. Zandstra. 2003. Effect of Colored Polyethylene
Mulches on Fresh Market Tomato Growth and Yield. Proceedings 31st
National Agricultural Plastics Congress P. 100-105.
Ngouajio M.
and E.S. Hagood. 1991. Postemergence johnsongrass (Sorghum halepense)
control in corn with primisulfuron. Biosciences Proceedings. 2:15-17.
Papers and presentations at scientific meetings: April 2009
62 abstracts
Extension presentations (local, state, national and international): April 2009
Over 130 presentations
Extension Publication (Bulletins, Magazines and Newsletters articles): April
2009
Over 60 extension publications
Reports or studies: April 2009
Over 85 reports
Press citation and interviews: April 2009
Over 30 interviews and press citations in:
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CBC Radio-
Windsor (Canada)
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Michigan
Farm Radio Network
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MSU Today
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Mother
Earth News Magazine
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Onion World
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Fruit and
Vegetable Magazine (Canada)
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The Grower
Magazine
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American
Vegetable Growers Magazine
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The
Vegetable Growers News
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The Tomato
Magazine
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The
Michigan Ag News
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Project
GREEEN News Stories
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