IRENUS A. TAZISONG
Department of Natural Resources and Environmental Sciences
P.O. Box 1208
Alabama A&M University
Normal, AL 35762.
Phone: [256] 372 8438
Fax: [256] 373 8404
E-mail: irenus.tazisong@aamu.edu
Professional Preparations
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Ph.D.
Biogeochemistry, Alabama A&M University, 2007.
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Dissertation: Enzymatic Hydrolysis and 31-P Nuclear Magnetic Resonance
Spectroscopic Identification and Quantification of Organic Phosphorus
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M.S.
Soil Science, Alabama A&M University, 2003.
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Thesis : Chemically Partitioned and Anaerobically Reduced Trace Metals in
Soils
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B. S.
Geology, University of Buea – Cameroon, 1998.
Professional Experience
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Research Assistant Professor, Alabama A&M University, 2008-present
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Graduate Research Assistant, Department of Natural Resources &
Environmental Science, Alabama A&M University, 2001-2007 .
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Head, Department of Geology, Bilingual High School Fontem-Cameroon
1998-2000
Research Interest
Research activities emphasize soil biochemistry, microbiology and environmental toxicology & chemistry. Examines the biotic and abiotic controls on enzyme production, turnover, and in-situ activities; [2] soil microbial/enzymes response to varying land disturbances and climatic changes; [3] development of new methods for soil enzyme catalysis and their effects on soil functions; [4] studies on soil microbial communities, functions and relation to mineralization of organic constituents; [5] studies on the chemical partitioning and bioreduction of soil metals; [6] biomass conversion using white rot fungi for bioenergy applications; [7] stability and interaction of humic substances in the environment
Research Activities
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Studies on trace and heavy metal chemistry, chemical fractionation, and biologically reduced metals.
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Microbial diversity in agricultural and forest systems
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Impact of cropping systems and landscape positions on microbial respiration,
CO
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fluxes and moisture variability.
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Phosphatases and amidohydrolases hydrolysis of organic phosphorus and nitrogen compounds and
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P NMR quantification of soil organic phosphorus.
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Using FTIR and
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C NMR to determine composition, stability, and reactivity of humic substances.
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Investigating spatial variability of phosphorus fractions in organic and inorganic production systems.
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Investigating mercury and arsenic cycling in environmental samples.
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Investigate total and available nutrients in reclaimed mine soils
Teaching
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Soil Microbiology/Biochemistry
Professional, Scientific, and Honor Society
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Member, Soil and Water Conservation Society
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Member Soil Science Society of America
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Member International Biochar Initiative
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Member America Association for the Advancement of Science
Honors and Awards
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Outstanding Science Teacher, 1999 . Government Bilingual High School,
Fontem [Cameroon]
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Outstanding Graduate Student, 2005 . School of Agriculture and
Environmental Sciences, Alabama A&M University.
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Outstanding achievement in Environmental Stewardship and Bio-Security for
Graduate student Competition Poster (Second place). (14 th
biennial research symposium of Association of Research Directors. Atlanta, Georgia. April 1-5
2006 .
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Recognition for outstanding accomplishment and for service to higher education and to Alabama A&M University. Alabama A&M University
Board of Trustee 2007.
Publications
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Tazisong, I.A
., Z.N. Senwo, and M. Williams. 2011. Mercury speciation and effects on soil microbial activities. (In Pres; Environ. Sci. Health)
• He, Z., Z.N. Senwo , and I.A. Tazisong . 2011.
Long-term dynamics of labile and stable phosphorus following poultry litter application to pasture soils. (In
Press; Commun. Soil Sci. Plant Anal)
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Tazisong, I.A
., Z.N. Senwo, R.W. Taylor, and Z. He. 2010. Mercury in manures and toxicity to environmental health. In Z. He (ed). Environmental chemistry of animal manure. Nova science publisher, Inc.
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Sainju, U.M., Z.N. Senwo, E.Z. Nyakatawa, I.A. Tazisong , K.C. Reddy.
2010 . Poultry litter application increases nitrogen cycling compared with inorganic nitrogen fertilization. Agron. J. 102:917-925.
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Ohno, T., Z. He, I.A. Tazisong , Z.N. Senwo. 2009 . Influence of tillage, and nitrogen source on the chemical characteristics of humic acid, fulvic acid, and water-soluble soil organic matter fractions of a long-term cropping system study. Soil Science .
174:652-660.
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• He, Z., Z.N. Senwo , I.A. Tazisong , D.A. Martens. 2009 . Amino compounds in poultry litter, litter-amended soil and plants. International Plant Nutrition
Colloquim. University of California, Davis. http://repositories.cdlib.org/ipnc/xvi/1048 .
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Tazisong, I.A
., Zachary Senwo. 2009.
Mercury concentration and distribution in soils impacted by long-term applied broiler litter. Bull. Environ. Contam. Toxicol.
83:291-294.
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He, Z., C. W. Honeycutt, I.A. Tazisong , Z.N. Senwo, R.W. Taylor, D. Zhang. 2009 .
Nitrogen and phosphorus accumulation in pasture soil from repeated poultry litter application. Commun. Soil Sci. Plant Anal.
40:587-598.
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Tazisong, I.A., Z.N. Senwo, R.W. Taylor, Z. He. 2008 . Hydrolysis of organic phosphates by commercially available phytases: Biocatalytic potential and effects of ions on their enzymatic activities. Journal of Food, Agriculture and
Environment .6:132-137.
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He, Z., C.W. Honeycutt, B.J. Cade-Menun , Z. N. Senwo, I.A. Tazisong .
2008 . Phosphorus from poultry litter and soil: Enzymatic and nuclear magnetic resonance characterization . Soil Sci. Soc. Am. J. 72:1436-1444.
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He , Z., I.A. Tazisong, Z. N. Senwo, D. Zhang. 2008.
Soil properties and macro cations status impacted by long-term applied poultry litter. Commun.
Soil Sci. Plant Anal.
39:858-872.
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Sainju, U.M., Z.N. Senwo, E.Z. Nyakatawa, I.A. Tazisong , K.C. Reddy.
2008 . Tillage, cropping system, and nitrogen fertilizer source effects on soil carbon sequestration and fractions. J. Environ. Qual .37:880-888.
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Sainju, U.M., Z.N. Senwo, E.Z. Nyakatawa, I.A. Tazisong , K.C. Reddy.
2007 . Soil carbon and nitrogen sequestration as affected by long-term tillage, cropping systems, and nitrogen fertilizer source. Agric. Ecosystems
Environ.
127:234-240.
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Sainju, U.M., Z.N. Senwo, E.Z. Nyakatawa, I.A. Tazisong , K.C. Reddy.
2007 . Tillage, cropping system, and nitrogen fertilizer source effects on soil and nitrogen sequestration. P. 446-447. In: A. Chabbi (ed.) Proc.
International symposium on organic matter dynamics in agro-ecosystems .
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Senwo, Z.N., T.D. Ranatunga, I.A. Tazisong, R.W. Taylor, Z. He . 2007 .
Phosphatase activity of ultisols and relationship to soil fertility indices.
Journal of Food, Agriculture and Environment . 5:262-266.
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Mankolo, R.N., Z.N. Senwo, T.D. Ranatunga, I.A. Tazisong . 2006 .
Phosphorus partitioning and phosphatase activity along topographic gradients of an agricultural watershed cropped with corn and soybean . J. Sustainable
Agriculture.
28:131-143
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He, Z., A.M. Fortuna, Z.N. Senwo, I.A. Tazisong, C.W. Honeycutt, T.S.
Griffin. 2006 . Hydrochloric acid fractions in Hedley fractionation may contain both inorganic and organic phosphates. Soil Sci. Soc. Am. J.
70:893-899.
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Tazisong, I.A., Z.N. Senwo, R.W. Taylor. 2005 . Trends in trace elements in an ultisol impacted by long-term applied broiler litter. Bulletin of
Environmental Contamination and Toxicology.
75:975-981.
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He, Z., C.W. Honeycutt, Z.N. Senwo, I.A. Tazisong. 2005 . Impacts of long-term poultry litter application on soil phosphorus. p. 910-911, in C. J. Li et al, eds. Plant nutrition for food security, human health and environmental protection . Tsinghua University press, Beijing, China.
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Tazisong, I.A., Z.N. Senwo, R.W. Taylor, M.O. Mbila, Y. Wang. 2004 .
Concentration and distribution of Iron and Manganese fractions in Alabama ultisols . Soil Science . 169:489-496
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Senwo, Z.N., I.A. Tazisong . Metal contents in soils of Alabama. 2004 .
Commun. Soil Sci. Plant Anal . 35: (19&20) 2837-2848.
Presentations
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Tazisong I.A. 2011. Teaching Soil Microbial Ecology at HBCUs: Challenges and Limitations. 16 th
Biennial Research Symposium, April 9-13, Atlanta
Marriot Marquis Atlanta, Georgia.
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He, Z. J. Mao, I. Tazisong and Z. Senwo. 2009. FT-IR and C-13 NMR analysis of soil humic fractions from a long term cropping system study.
(Humic substances and technology eleven. Boston, MA April 1-4 2009).
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He, Z., C.W. Honeycutt, I.A
. Tazisong , Z.N. Senwo . 2008 . Patterns of accumulation of residual P from land applied poultry litter in pasture soil.
(Montreal, July 13-16, 2008).
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Tazisong, I.A., Z.N. Senwo, R.W. Taylor Z. He, 2008.
Preferential affinity of humic-metal interactions coupled with phosphatase hydrolysis of humicorganic phosphorus complexes. (Humic substances and technology eleven.
Boston, MA April 1-4 2008).
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Sainju, U.M., Z.N. Senwo, E.Z. Nyakatawa, I.A. Tazisong , C. Reddy . 2007 .
Tillage, cropping system, and nitrogen fertilization source effects on soil carbon fractions (New Orleans, November 4-8, 2007).
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He, Z., C.W. Honeycutt, B.J. Cade-Menun, Z.N. Senwo, I.A. Tazisong. 2007 .
Transformation of organic P forms of poultry litter in soil identified by enzymatic hydrolysis and P-31 NMR spectroscopy (New Orleans, November
4-8, 2007).
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Tazisong, I.A., Z.N. Senwo, R.W. Taylor, Z. He. 2007 . Phosphatase hydrolysis of soil organic phosphorus fractions. (New Orleans, November 4-8
2007)
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He, Z., I.A. Tazisong , Z. Senwo, D. Zhang. 2007 . Accumulation of N and P in pasture soil by repeated poultry litter accumulation. International symposium on soil and plant analysis (Budapest, Hungary June 11-15 th
2007).
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Tazisong, I.A., Z.N. Senwo, Z. He, R.W. Taylor. 2007 . Composition, stability, and interactions of organic matter fractions in an ultisol (North
Carolina, September 12-14 2007.
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Tazisong, I.A., Z. He, Z.N. Senwo, D. Zhang. 2006 . Impacts of long-term land application of poultry litter on metal status in soil. [World congress of soil science (wcss) July 9-15]
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Tazisong, I.A., Z.N. Senwo, R.W. Taylor. 2006 . Phosphatase activities during organic phosphorus hydrolysis. (14 th
biennial research symposium of
Association of Research Directors. Atlanta, Geogia. April 1-5.
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Tazisong, I.A., Z.N. Senwo, R.W. Taylor. 2005 . Enrichment of trace metals in an Ultisol impacted by Broiler Litter. (Alabama Water Resources Conference and Symposium. Orange Beach, Alabama. September 7-9 2005).
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He, Z., A.M. Fortuna, C.W. Honeycutt, T.S. Griffin, Z.N. Senwo, I.A.
Tazisong. 2005 .
Exploring organic phosphates in sequentially extracted
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hydrochloric acid fractions of soil and animal manure (Salt Lake city, UT-
November 6-10, 2005).
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Senwo, Z.N., I.A. Tazisong, R. Taylor. 2005 . Assessments of trace elements in some Alabama soils. (SBASA, San Antonio, TX, June 19-23).
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Tazisong , I.A
., Z.N. Senwo, R. Taylor. 2005 . Trends in trace metals in an ultisol impacted by long-term applied broiler litter. (SBASA, San Antonio,
TX, June 19-23.
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Tazisong, I.A., Z.N. Senwo, R.W. Taylor, M.O. Mbila. 2003 . Chemically partitioned and anaerobically reduced traced metals in soils. (13th Annual
SEA Student Technical Conference October 8–11, 2003).
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Tazisong, I.A., Z.N. Senwo, M.O. Mbila. 2003 . Chemically partitioned and biologically reduced traced metals in highly weathered soils. (SBASA, 2-4
February, Mobile Alabama).
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Ranatunga, T.D., Z.N. Senwo, I.A. Tazisong . 2002 . Phosphatese activity in soils (ASA, SSSA, CSSA annual meetings, 10-14 November 2002).
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Ranatunga, T.D., Z.N. Senwo, I.A. Tazisong . 2002 . Impact of land use on soil properties.
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Tazisong, I.A., Z.N. Senwo, D.B. Watts. 2001 . Metal content under intensive pasture management practices. (ASA, North Carolina).
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Senwo, Z.N., I.A. Tazisong , D.B. Watts. 2001 . Nitrogen status in soil under intensive pasture management. (ASA, North Carolina).
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Watts, D.B., Z.N. Senwo, I.A. Tazisong . 2001 . Carbon mineralization in soils under intensive pasture management. (ASA, North Carolina)
Relevant Skills
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Proficient in the use of ICP-MS/AES (inductively coupled Plasma), CNS
(carbon, nitrogen, and sulfur) analyzer, microwave digester, Ammonia analyzer, NMR, direct mercury analyzer (DMA-80), and FTIR.
Microsoft word, Excel, Sigma plot, Quattro-Pro, PowerPoint, SPSS, SAS, and
Geostatistics for the environmental sciences (Gamma Design Software).
Other Experience
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Some experience in wet land delineation.
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