Biological Control of Pests Research Unit : People & Places

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Mark Weaver

Plant Pathologist

Publications (Clicking on the reprint icon

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Aspergillus flavus genetic diversity of corn fields treated with non-toxigenic strain afla-guard in the southern U.S - (Abstract Only) - (19-Nov-12)

Prevention of aflatoxin contamination in corn through biological control - (Abstract Only) - (22-May-12)

Aflatoxin management in corn with Afla-Guard - (Abstract Only) - (14-May-12)

Detection of aflatoxigenic aspergillus flavus contamination of coconut (cocos nucifera) nutmeat (copra) using ammonia treatment - (Abstract Only) - (14-May-12)

Comparison of aflatoxin and fumonisin levels in corn from bt and conventional hybrids - (Abstract Only) - (13-May-12)

Extending the use of bioplastic granules for the application of trichoderma biocontrol isolates in flori/horticulture and turfgrass - (Peer Reviewed Journal) - (10-May-12)

The impact of common smut(Ustilago maydis) on aflatoxin and fumonisin in transgenic Bt and non-Bt maize (Zea mays) - (Abstract Only) - (04-May-12)

Identification of genetic defects in the atoxigenic biocontrol strain Aspergillus flavus K49 reveals the presence of a competitive recombinant group in field populations - (Peer Reviewed Journal)

Chang, P., Abbas, H.K., Weaver, M.A., Ehrlich, K., Scharfenstein, L.L., Cotty, P.J. 2012. Identification of genetic defects in the atoxigenic biocontrol strain Aspergillus flavus K49 reveals the presence of a competitive recombinant group in field populations. International Journal of Food Microbiology. 154:192-196.

Bioherbicidal activity from washed spores of Mycrothecium verrucaria - (Peer Reviewed Journal)

Weaver, M.A., Boyette, C.D., Hoagland, R.E. 2012. Bioherbicidal activity from washed spores of Mycrothecium verrucaria. World Journal of Microbiology and Biotechnology. 28:1941-1946.

Biological control potential of Colletotrichum gloeosporioides for coffee senna (Cassia occidentalis) - (Peer Reviewed Journal)

Boyette, C.D., Hoagland, R.E., Weaver, M.A., Stetina, K.C. 2012. Biological control potential of Colletotrichum gloeosporioides for coffee senna (Cassia occidentalis). American Journal of Plant Sciences. 3:430-436.

Visualization of aflatoxigenic Aspergillus flavus contamination of coconut (Cocos nucifera) nutmeat (Copra) using ammonia treatment - (Peer Reviewed Journal) - (31-Oct-11)

Extending the uses of bioplastic granules for the application of Trichoderma biocontrol isolates in flori/horticulture and turf grass. - (Abstract Only) - (31-Oct-11)

Effects of simulated rainfall on disease development and weed control efficacy of the bioherbicidal fungi alternaria cassiae and colletotrichum truncatum - (Peer Reviewed Journal)

Boyette, C.D., Bryson, C.T., Hoagland, R.E., Weaver, M.A. 2012. Effects of simulated rainfall on disease development and weed control efficacy of the bioherbicidal fungi Alternaria cassiae and Colletotrichum truncatum. Weed Technology. 26:117-121.

Mycotoxins in food and their control by the use of non-toxigenic biocontrol agents - (Abstract Only)

Abbas, H.K., Weaver, M.A., Jin, X., Shier, W.T. 2011. Mycotoxins in food and their control by the use of non-toxigenic biocontrol agents. The 1st Internatnional Symposium on Mycotoxins in Nuts and Dried Fruits, Damghan-Iran 10-12, Sep, 2011, page 24.

Cultural Methods as an Alternative Approach to Assessing Mycotoxin Contamination in Crops - (Abstract Only)

Shier, W.T., Abbas, H.K., Weaver, M.A., Horn, B.W. 2011. Cultural methods as an alternative approach to assessing mycotoxin contamination in crops. The 1st International Symposium on Mycotoxins in Nuts and Dried Fruits, Damghan-Iran 10-12, Sep, 2011, page 54.

Selection of Aspergillus flavus isolates for biological control of aflatoxins in corn - (Peer Reviewed Journal)

Abbas, H.K., Weaver, M.A., Horn, B.W., Carbone, I., Monacell, J.T., Shier, W.T. 2011. Selection of Aspergillus flavus isolates for biological control of aflatoxins in corn. Toxin Reviews. 30(2)(3): 59-70.

Reduction of aflatoxins, cyclopiazonic acid and fumonisins in corn by biocontrol strains of non-aflatoxigenic Aspergillus flavus - (Abstract Only)

Abbas, H.K., Horn, B.W., Weaver, M.A., Jin, X., Abel, C.A., Shier, W. Reduction of aflatoxins, cyclopiazonic acid and fumonisins in corn by biocontrol strains of non-aflatoxigenic Aspergillus flavus. American Phytopathological Society Abstracts. No. 6., P. S1. 2011.

Microbial and vegetative changes associated with development of a constructed wetland

- (Peer Reviewed Journal)

Weaver, M.A., Zablotowicz, R.M., Krutz, L.J., Locke, M.A., Bryson, C.T. 2012. Microbial and vegetative changes associated with development of a constructed wetland. Ecological Indicators. 13:37-45.

Constructed wetlands as a component of the agricultural landscape: Mitigation of herbicides in simulated runoff from upland drainage areas - (Peer Reviewed Journal)

Locke, M.A., Weaver, M.A., Zablotowicz, R.M., Steinriede Jr, R.W., Bryson, C.T., Cullum, R.F. 2011. Constructed wetlands as a component of the agricultural landscape: Mitigation of herbicides in simulated runoff from upland drainage areas. Chemosphere. 83:1532-1538. DOI:10.1016/j.chemosphere.2011.01.034.

Effects of Myrothecium verrucaria on morning-glory (Ipomoea) species - (Peer Reviewed Journal)

Hoagland, R.E., Mccallister, T.S., Boyette, C.D., Weaver, M.A., Beecham, R.V. 2011. Effects of Myrothecium verrucaria on morning-glory (Ipomoea) species. Allelopathy Journal. 27(2):151-162.

Assessment of biocontrol strains for reduction of mycotoxins (aflatoxin and CPA) in maize - (Abstract Only)

Abbas, H.K., Zablotowicz, R.M., Horn, B.W., Weaver, M.A., Jin, X. 2010. Assessment of biocontrol strains for reduction of mycotoxins (aflatoxin and CPA) in maize. Meeting Abstract.Book of Abstracts and Programme, Global Mycotoxin Reduction Strategies: Asia and Pacific Rim. Page 65.

Effects of surfactants on conidial germination of Myrothecium verrucaria - (Abstract Only) - (15-Mar-10)

Sugarcane residue decomposition by white and brown rot microorganisms - (Peer Reviewed Journal)

Lyn, M.E., Boopathy, R., Boykin, D.L., Weaver, M.A., Viator, R.P., Johnson, R.M. 2010. Sugarcane residue decomposition by white and brown rot microorganisms. Sugar Cane International. 28(3):127-131.

Predicting where enhanced atrazine degradation will occur based on soil pH and herbicide use history - (Government Publication)

Krutz, L.J., Shaner, D.L., Zablotowicz, R.M., Weaver, M.A., and Reddy, K.N. 2010. Predicting where enhanced atrazine degradation will occur based on soil pH and herbicide use history. Agricultural Research Service Station Bulletin, Crop Production Systems Research Unit Fact Sheet. 2010-01.

Agronomic and Environmental Implications of Enhanced s-Triazine Degradation - (Peer Reviewed Journal)

Krutz, L.J., Shaner, D.L., Weaver, M.A., Webb, R.M., Zablotowicz, R.M., Reddy, K.N., Huang, Y., Thomson, S.J. 2010. Agronomic and Environmental Implications of Enhanced s-Triazine Degradation. Pest Management Science. 66:461-481.

Optimization of compatible non-ionic surfactant for formulation development of hydrophobic conidia of entomopathogenic fungi, Beauveria bassiana (Hypocreales:Cordycipitaceae) and Metarhizium anisopliae Hypocreales:Clavicipita - (Proceedings)

Jin, X., Chen, J., Streett, D.A., and Weaver, M.A. 2009. Optimization of compatible non-ionic surfactant for formulation development of hydrophobic conidia of entomopathogenic fungi, Beauveria bassiana (Hypocreales: Cordycipitaceae) and Metarhizium anisopliae (Hypocreales: Clavicipitaceae). Proceedings of the 6th Asia-Pacific Congress of Entomology. Beijing, P. R. China, October 18-22, 2009. pp. 145.

Field Assessment of Non-toxigenic Aspergillus flavus Strain K49 in Competitive Displacement of Toxigenic Isolates - (Abstract Only)

Abbas, H.K., Zablotowicz, R.M., Bruns, H.A., Abel, C.A., Weaver, M.A. 2009. Field Assessment of Non-toxigenic Aspergillus flavus Strain K49 in Competitive Displacement of Toxigenic Isolates. Phytopathology (99)6:S1

Improved bioherbicidal efficacy by Myrothecium verrucaria via spray adjuvants or herbicide mixtures - (Peer Reviewed Journal)

Weaver, M. A., Jin, X., Hoagland, R. E., Boyette, C. D. 2009. Improved bioherbicidal efficacy by Myrothecium verrucaria via spray adjuvants or herbicide mixtures. Biocontrol. 50: 150-156.

Ecology of Aspergillus flavus, Regulation of Aflatoxin Production and Management Strategies to Reduce Aflatoxin Contamination of Corn - (Peer Reviewed Journal)

Abbas, H.K., Wilkinson, J.R., Zablotowicz, R.M., Accinelli, C., Abel, C.A., Bruns, H.A., Weaver, M.A. 2009. Ecology of Aspergillus flavus, regulation of aflatoxin production and management strategies to reduce aflatoxin contamination of corn. Journal of Toxicology Toxins Reviews. 28(2-3):142-153.

Kudzu Suppression by Herbicides in Two-Year Field trials - (Abstract Only)

Weaver, M.A., Lyn, M.E., Boyette, C.D., Hoagland, R.E. 2009. Kudzu Suppression by Herbicides in Two-Year Field trials. Weed Science Society of America Annual Meeting. 49:37.

Macrocyclic Trichothecene Production and Sporulation by a Biological Control Strain of Myrothecium verrucaria is Regulated by Cultural Conditions - (Peer Reviewed Journal)

Weaver, M.A., Hoagland, R.E., Boyette, C.D., Zablotowicz, R.M. 2009. Macrocyclic Trichothecene Production and Sporulation by a Biological Control Strain of Myrothecium verrucaria is Regulated by Cultural Conditions. World Mycotoxin Journal 2(1):35-43.

Cover crops tillage and glyphosate effects on chemical and biological properties of a Lower Mississippi Delta soil and soybean yield - (Peer Reviewed Journal)

Zablotowicz, R.M., Reddy, K.N., Weaver, M.A., Mengistu, A., Krutz, L.J., Gordon, R.E., Bellaloui, N. 2010. Cover crops tillage and glyphosate effects on chemical and biological properties of a Lower Mississippi Delta soil and soybean yield. Environmental Research. 4:227-251.

Cover Crops, Tillage, and Glyphosate Effects on Chemical and Biological Properties of a Lower Mississippi Delta Soil and Soybean Yield - (Book / Chapter)

Zablotowicz, R.M., Reddy, K.N., Weaver, M.A., Mengistu, A., Krutz, L.J., Gordon, R.E., Bellaloui, N. 2009. Cover Crops, Tillage, and Glyphosate Effects on Chemical and Biological Properties of a Lower Mississippi Delta Soil and Soybean Yield. In: Tomas H. Latos, ed. Cover Crops and Crop Yields, Nova Publishers, Inc., Huntington, NY, pp. 265-289.

Glufosinate and Ammonium Sulfate Inhibits Atrazine Degradation in Adapted Soils

- (Peer Reviewed Journal)

Zablotowicz, R.M., Krutz, L.J., Weaver, M.A., Accinelli, C., Reddy, K.N. 2008. Glufosinate and Ammonium Sulfate Inhibits Atrazine Degradation in Adapted Soils. Biology Fertility Soils 45:19-26.

Enzyme-Linked Immunosorbent Assay Detection of Trichothecenes Produced by the Bioherbicide Myrothecium verrucaria in Cell Cultures, Extracts, and Plant Tissues - (Peer Reviewed Journal)

Hoagland, R.E., Weaver, M.A., Boyette, C.D. 2008. Enzyme-linked immunosorbent assay detection of trichothecenes produced by the bioherbicide myrothecium verrucaria in cell cultures, extracts, and plant tissues. Communications in Soil Science and Plant Analysis 39:3059-3075.

Competitiveness of a Genetically Engineered Strain of Trichoderma virens - (Peer Reviewed Journal)

Weaver, M.A., Kenerley, C.M. 2008. Competitiveness of a Genetically Engineered Strain of Trichoderma virens. Mycopathologia 166:51-59.

Submerged Culture of a Mycelial Formulation of a Bioherbicidal Strain of Myrothecium verrucaria with Mitigated Mycotoxin Production - (Peer Reviewed Journal)

Boyette, C. D., Weaver, M. A., Hoagland, R. E., and Stetina, K. C. 2008. Submerged Culture of a Mycelial Formulation of a Bioherbicidal Strain of Myrothecium verrucaria with Mitigated Mycotoxin Production. World Journal of Microbiology and Biotechnology. 24(11):2721-2726.

Bioherbicides: Research and Risks - (Peer Reviewed Journal)

Hoagland, R.E., Boyette, C.D., Weaver, M.A., Abbas, H.K. 2007. Bioherbicides: Research and Risks. Journal of Toxicology Toxins Reviews. 26:313-342.

Effect of Row Spacing on Biological Control of Sicklepod (Senna obtusifolia) with Colletotrichum gloeosporioides - (Peer Reviewed Journal)

Boyette, C.D., Hoagland, R.E., Weaver, M.A. 2007. Effect of Row Spacing on Biological Control of Sicklepod (Senna obtusifolia) with Colletotrichum gloeosporioides. Biocontrol Science and Technology 17(9):957-967.

Redvine (Brunnichia ovata) and Trumpetcreeper (Campsis radicans) Controlled Under Field Conditions by a Synergistic Interaction of the Bioherbicide Myrothecium verrucaria and Glyphosate - (Peer Reviewed Journal)

Boyette, C.D., Hoagland, R.E., Weaver, M.A., Reddy, K.N. 2008. Redvine (Brunnichia ovata) and Trumpetcreeper (Campsis radicans) Controlled Under Field Conditions by a Synergistic Interaction of the Bioherbicide Myrothecium verrucaria and Glyphosate. Weed Biology and Management 8:39-45.

INTERACTION OF A BIOHERBICIDE AND GLYPHOSATE FOR CONTROLLING HEMP SESBANIA IN GLYPHOSATE - RESISTANT SOYBEAN - (Peer Reviewed Journal)

Boyette, C.D., Hoagland, R.E., Weaver, M.A. 2008. Interaction of a bioherbicide and glyphosate for controlling hemp sesbania in glyphosate - resistant soybean. Weed Biology and Management. 8:19-24.

Compatability of a Biological Control Agent with Herbicides for Control of Invasive Plant Species - (Peer Reviewed Journal)

Weaver, M.A., Lyn, M.E. 2007. Compatability of a Biological Control Agent with Herbicides for Control of Invasive Plant Species. Natural Areas Journal 26:264-268.

Bioherbicides for Weed Control - (Book / Chapter)

Weaver, M.A., Lyn, M.E., Boyette, C.D., Hoagland, R.E. 2007. Bioherbicides for Weed Control. CAB International. (Upadhyaya and Blackshaw). Chapter 7 pp. 93-110.

Myrothecium verrucaria as a Bioherbicide, and Strategies to Reduce Its Non-Target Risks - (Peer Reviewed Journal)

Hoagland, R.E., Weaver, M.A., Boyette, C.D. 2007. Myrothecium verrucaria fungus: A Bioherbicide and Strategies to Reduce Its Non-Target Risks. Allelopathy Journal 19(1): 179-192.

RAPID DEVELOPMENT OF ENHANCED ATRAZINE DEGRADATION IN A DUNDEE SILT LOAM SOIL UNDER CONTINUOUS CORN AND IN ROTATION WITH COTTON - (Peer Reviewed Journal)

Zablotowicz, R.M., Krutz, L.J., Reddy, K.N., Weaver, M.A., Koger III, C.H., Locke, M.A. 2007. Rapid development of enhanced atrazine degradation in a dundee silt loam soil under continuous corn and in rotation with cotton. Journal of Agricultural and Food Chemistry, Vol. 55, Number 3, pp. 852-859.

EFFECTS OF GLYPHOSATE ON SOIL MICROBIAL COMMUNITIES AND ITS MINERALIZATION IN A MISSISSIPPI SOIL - (Peer Reviewed Journal)

Weaver, M.A., Krutz, L.J., Zablotowicz, R.M., Reddy, K.N. 2007. Effects of glyphosate on soil microbial communities and its mineralization in a mississippi soil. Pest Management Science 63:388-393.

Viability of the bioherbicide Myrothecium verrucaria in tank-mix suspensions: effect of herbicide formulation, rate and suspension time - (Abstract Only)

Weaver, M.A., Lyn, M.E., Boyette, C.D., Hoagland, R.E. 2007. Viability of the bioherbicide Myrothecium verrucaria in tank-mix suspensions: effect of herbicide formulation, rate and suspension time. Weed Science Society of America Meeting Abstracts.

BIOCONTROL EFFICACY OF COLLETOTRICHUM TRUNCATUM FOR HEMP SESBANIA (SESBANIA EXALTATA) IS ENHANCED WITH UNREFINED CORN OIL AND SURFACTANTS - (Peer Reviewed Journal)

Boyette, C.D., Hoagland, R.E., Weaver, M.A. 2007. Biocontrol efficacy of colletotrichum truncatum for hemp sesbania (sesbania exaltata) is enhanced with unrefined corn oil and surfactants. Weed Biology and Management 7:70-76.

ENHANCED DEGRADATION OF ATRAZINE UNDER FIELD CONDITIONS CORRELATES WITH A LOSS OF WEED CONTROL IN THE GLASSHOUSE - (Peer Reviewed Journal)

Krutz, L.J., R.M. Zablotowicz, K.N. Reddy, C.H. Koger III, and M.A. Weaver. 2007. Enhanced degradation of atrazine under field conditions correlates with a loss of weed control in the glasshouse. Pest Management and Science 63:23-31. Krutz, L.J., R.M. Zablotowicz, K.N. Reddy, C.H. Koger III, and M.A. Weaver. 2007. Enhanced degradation of atrazine under field conditions correlates with loss of weed control in the greenhouse. Pest Management Science 63:23-31.

RESEARCH FINDINGS AND STRATEGIES TO REDUCE RISKS OF THE BIOHERBICIDE, MYROTHECIUM VERRUCARIA - (Proceedings)

Hoagland, R.E., Boyette, C.D., Weaver, M.A., Abbas, H.K. 2006. Research findings and strategies to reduce risks of the bioherbicide, myrothecium verrucaria. International Allelopathy Congress, Vol. 3, pp. 114-121.

MICROBIAL ADAPTION FOR ACCELERATED ATRAZINE MINERALIZATION/DEGRADATION IN MISSISSIPPI DELTA SOILS - (Peer Reviewed Journal)

Zablotowicz, R.M., Weaver, M.A., Locke, M.A. 2006. Microbial adaption for accelerated atrazine mineralization/degradation in mississippi delta soils. Weed Science 54:538-547.

DENSITY INDEPENDENT POPULATION DYNAMICS BY TRICHODERMA VIRENS IN SOIL AND DEFINED SUBSTRATES - (Peer Reviewed Journal)

Weaver, M.A., Kenerley, C. 2005. Density independent population dynamics by trichoderma virens in soil and defined substrates. Biocontrol Science and Technology 15:847-857.

The case for monitoring Aspergillus flavus aflatoxigenicity for food safety assessment in developing countries - (Book / Chapter)

Shier, W.T., Abbas, H.K., Weaver, M.A., Horn, B.W. 2005. The case for monitoring Aspergillus flavus aflatoxigenicity for food safety assessment in developing countries. Aflatoxin and Food Safety. 14:291-312.

FITNESS, PERSISTENCE, AND RESPONSIVENESS OF A GENETICALLY ENGINEERED STRAIN OF TRICHODERMA VIRENS IN SOIL MESOCOSMS - (Peer Reviewed Journal)

Weaver, M.A., Vedenyapina, E., Kenerly, C. 2005. Fitness, persistence, and responsiveness of a genetically engineered strain of trichoderma virens in soil mesocosms. Applied Soil Ecology 29:125-134.

Relationships between aflatoxin production, sclerotia formation among isolates of Aspergillus section Flavi from the Mississippi Delta - (Peer Reviewed Journal)

Abbas, H. K., Weaver, M. A., Zablotowicz, R. M., Horn, B. W., and Shier, W. T. Relationships between aflatoxin production, sclerotia formation among isolates of Aspergillus section Flavi from the Mississippi Delta. European Journal of Plant Pathology. 112:283-287. 2005.

LABORATORY ASSESSMENT OF ATRAZINE AND FLUOMETURON DEGRADATION IN SOILS FROM A CONSTRUCTED WETLAND - (Peer Reviewed Journal)

Weaver, M.A., Zablotowicz, R.M., Locke, M.A. 2004. Laboratory assessment of atrazine and fluometuron degradation in soils from a constructed wetland. Chemosphere 57:853-862.

FATTY ACID ANALYSES OF 8 CRATICULA CUSPIDATE CLONES - (Abstract Only)

Zimba, P.V., Weaver, M.A., Sullivan, M.J., Czarnecki, D. 2004. Fatty acid analyses of 8 craticula cuspidate clones. J. Phycology 41(suppl.):73.

SOIL MICROBIAL COMMUNITY RESPONSES TO HYDROLOGY AND VEGETATION IN A MISSISSIPPI DELTA FORESTED RIPARIAN ZONE - (Abstract Only)

Weaver, M.A., Zablotowicz, R.M., Bryson, C.T. 2004. Soil microbial community responses to hydrology and vegetation in a mississippi delta forested riparian zone. [Abstract]. American Society of Agronomy Branch Meeting.

EFFECT OF WINTER FLOODING OF RICE FIELDS ON SOIL MICROBIAL ACTIVITY AND COMMUNITY STRUCTURE - (Abstract Only)

Patterson, M., Zablotowicz, R.M., Weaver, M.A., Koger Iii, C.H., Wahome, J. Effect of winter flooding of rice fields on soil microbial activity and community structure. [Abstract]. American Society of Agronomy Branch Meeting.

Cultural Methods in Aflatoxin Detection - (Review Article)

Abbas, H.K., Shier, W.T., Horn, B.W., Weaver, M.A. 2004. Cultural Methods in Aflatoxin Detection. Journal of Toxicology Toxins Reviews. 23:295-315

Comparsion of Cultural and Analytical Methods for Determination of Aflatoxin Production by Mississippi Delta Aspergillus isolates - (Peer Reviewed Journal)

Abbas, H.K., Zablotowicz, R.M., Weaver, M.A., Horn, B.W., Xie, W., Shier, W.T. 2004. Comparsion of Cultural and Analytical Methods for Determination of Aflatoxin Production by Mississippi Delta Aspergillus isolates. Canadian Journal of Microbiology. 50(3): 193-199

EFFECT OF INTERMITTENT IRRIGATION ON RICE AGRONOMICS, ENVIRONMENTAL CONSERVATION AND PEST MANAGEMENT - (Abstract Only)

Smith, M.C., Massey, J.H., Scherder, E.F., Talbert, R.E., Ottis, B.V., Vories, E.D., Weaver, M.A., Zablotowicz, R.M., Locke, M.A. 2004. Effect of intermittent irrigation on rice agronomics, environmental conservation and pest management. Southern Weed Science Society of America Abstracts. 57:60.

PLANT AND MICROBIAL COMMUNITY STRUCTURE, FUNCTION AND DYNAMICS IN A MISSISSIPPI DELTA CONSTRUCTED WETLAND - (Abstract Only)

Weaver, M.A., Zablotowicz, R.M., Bryson, C.T. 2003. Plant and microbial community structure, function and dynamics in a mississippi delta constructed wetland. [Abstract]. American Society of Agronomy.

REDUCED WATER USE AND METHANE EMISSIONS FROM RICE GROWN USING INTERMITTENT IRRIGATION - (Proceedings)

Massey, J.H., Scherder, E.F., Talbert, R.E., Zablotowicz, R.M., Locke, M.A., Weaver, M.A., Smith, M.C., and Steinriede Jr, R.W. Reduced water use and methane emissions from rice grown using intermittent irrigation. Proceedings Mississippi Water Resources Research Institute, CD-ROM, 2003.

Last Modified: 05/24/2013

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