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United States Department of Agriculture

Agricultural Research Service

Related Topics

Michael W Hotchkiss (Mike)
Fruit and Nut Research
Plant Pathologist

Phone: (478) 956-6403
Fax: (478) 956-2929
Room 106

21 DUNBAR RD
BYRON , GA 310089805


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Scab susceptibility of a provenance collection of pecan in in the southeastern USA -
Population structure and genetic diversity of Fusicladium effusum in the USA -
Scab severity in relation to hedge pruning pecan trees in the Southeastern USA -
Scab susceptibility of a provenance collection of pecan -
Scab susceptibility of a provenance collection of pecan in three different seasons in the Southeastern USA -
Bock, C.H., Grauke, L.J., Conner, P., Burrell, S.L., Hotchkiss, M.W., Boykin, D.L., Wood, B.W. 2016. Scab susceptibility of a provenance collection of pecan in three different seasons in the Southeastern USA. Plant Disease. 100(9):1937-1945.
Relative potency of culture supernatants of Xenorhabdus and Photorhabdus spp. on growth of some fungal phytopathogens -
Hazir, S., Shapiro Ilan, D.I., Bock, C.H., Hazir, C., Leite, L., Hotchkiss, M.W. 2016. Relative potency of culture supernatants of Xenorhabdus and Photorhabdus spp. on growth of some fungal phytopathogens. European Journal of Plant Pathology. 146(2):369-381.
Metagenomics characterization of wood decay fungi colonized in peach limb heartwood -
Chen, C., Bock, C.H., Hotchkiss, M.W., Garbelotto, M.M., Cottrell, T.E. 2016. Metagenomics characterization of wood decay fungi colonized in peach limb heartwood. Plant and Animal Genome Conference. 22:224.
The distribution of scab in pecan trees in relation to fruit weight -
Bock, C.H., Hotchkiss, M.W., Wood, B.W. 2105. The distribution of scab in pecan trees in relation to fruit weight. Pecan Grower. 26:24-39.
Fusicladium effusum draft genome sequence -
Bock, C.H., Chen, C., Yu, F., Hotchkiss, M.W., Wood, B.W. 2015. Fusicladium effusum draft genome sequence. Genbank. GeneBank accession: PRJNA285422.
Efficacy of Prophyt and Captan when combined for control of peach scab in Georgia, 2014 (Flameprince) -
Brannen, P.M., Bock, C.H., Hotchkiss, M.W. 2015. Efficacy of Prophyt and Captan when combined for control of peach scab in Georgia, 2014 (Flameprince). Plant Disease Management Reports. 9:STF007.
Efficacy of Prophyt plus Captan when combined for control of peach scab in Georgia, 2014 -
Brannen, P.M., Bock, C.H., Hotchkiss, M.W. 2015. Efficacy of Prophyt plus Captan when combined for control of peach scab in Georgia, 2014. Plant Disease Management Reports. 9:STF008.
Efficacy of Prophyt and Captan as a tank mix when combined for control of peach scab in Georgia, 2014 -
Brannen, P.M., Bock, C.H., Hotchkiss, M.W. 2015. Efficacy of Prophyt and Captan as a tank mix when combined for control of peach scab in Georgia, 2014. Plant Disease Management Reports. 9:STF009.
Efficacy of ProPhyt mixed with a low rate of Captec for control of peach scab in South Carolina, 2014 -
Schnabel, G., Brannen, P.M., Bock, C.H., Hotchkiss, M.W. 2015. Efficacy of ProPhyt mixed with a low rate of Captec for control of peach scab in South Carolina, 2014. Plant Disease Management Reports. 9:STF006.
Efficacy of Prophyt when combined with Captec for control of peach scab in Alabama, 2014 -
Sikora, E., Pitts, J., Brannen, P.M., Bock, C.H., Hotchkiss, M.W. 2015. Efficacy of Prophyt when combined with Captec for control of peach scab in Alabama, 2014. Plant Disease Management Reports. 9:STF005.
Components of yield in pecan depend on tree height due to the distribution of scab in the canopy -
Bock, C.H., Hotchkiss, M.W., Wood, B.W. 2015. Components of yield in pecan depend on tree height due to the distribution of scab in the canopy. Phytopathology. 105(Suppl. 4): S4.17.
Observation and identification of wood-decay fungi from the heartwood of peach tree limbs in central Georgia, USA -
Observation and identification of wood decay fungi from the heartwood of peach tree limbs in central Georgia, USA -
Chen, C., Bock, C.H., Hotchkiss, M.W., Garbelotto, M.M., Cottrell, T.E. 2015. Observation and identification of wood decay fungi from the heartwood of peach tree limbs in central Georgia, USA. European Journal of Plant Pathology. 143(1):11-23.
Hedging and severity of pecan scab – a second year of results -
Bock, C.H., Hotchkiss, M.W., Brenneman, T.B., Stevenson, K.L., Goff, W., Smith, M.W., Wells, L., Wood, B.W. 2015. Hedging and severity of pecan scab – a second year of results. Pecan Grower. 26: 34-47.
Assessing disease severity: accuracy and reliability of rater estimates in relation to number of diagrams in a standard area diagram set -
Bock, C.H., Hotchkiss, M.W., Wood, B.W. 2016. Assessing disease severity: accuracy and reliability of rater estimates in relation to number of diagrams in a standard area diagram set. Plant Pathology. 65(2):261–272.
The effect of sample height on spray coverage in mature pecan trees -
Bock, C.H., Hotchkiss, M.W., Cottrell, T.E., Wood, B.W. 2015. The effect of sample height on spray coverage in mature pecan trees. Plant Disease. 99(7):916-925.
Spray Coverage, Hedging and Pecan Scab - an Update on Research -
Bock, C.H., Stevenson, K.I., Brenneman, T.B., Hotchkiss, M.W., Smith, M.W., Goff, W., Wells, L., Wood, B.W. 2015. Spray Coverage, Hedging and Pecan Scab - an Update on Research. Southeastern Pecan Growers Meeting Proceedings. sepga.com/Presentation/WEB2015pres/Bock-SpraycoverageHedgingandPecanScab-anUpdateonReasearchV3.pdf.
Hedging – does it affect the severity of pecan scab? -
Bock, C.H., Hotchkiss, M.W., Brenneman, T.B., Stevenson, K.L., Goff, W., Smith, M.W., Wells, L., Wood, B.W. 2014. Hedging – does it affect the severity of pecan scab?. Pecan Grower. 25: 48-58.
Disease distribution and fungicide coverage in pecan trees -
Bock, C.H., Hotchkiss, M.W., Cottrell, T.E., Wood, B.W. 2015. Disease distribution and fungicide coverage in pecan trees. Acta Horticulturae. 1070:171-182.
Genetic variability among populations of Fusicladium species from different host trees and geographic locations in the USA Reprint Icon -
Chen, C., Bock, C.H., Brannen, P.M., Adaskaveg, J.E., Hotchkiss, M.W., Brewer, M.T., Wood, B.W. 2014. Genetic variability among populations of Fusicladium species from different host trees and geographic locations in the USA. Mycological Progress. 13(4):1179–1190.
Suppression of pecan and peach pathogens on different substrates using Xenorhabdus bovienii and Photorhabdus luminescens -
Shapiro Ilan, D.I., Bock, C.H., Hotchkiss, M.W. 2014. Suppression of pecan and peach pathogens on different substrates using Xenorhabdus bovienii and Photorhabdus luminescens. Biological Control. 77, 1-6.
How many standard area diagram sets are needed for accurate disease severity assessment -
Suppression of pecan and peach pathogens using metabolites or broths of from symbiotic bacteria obtained from the guts of entomopathogenic nematodes -
Shapiro Ilan, D.I., Bock, C.H., Hotchkiss, M.W. 2014. Suppression of pecan and peach pathogens using metabolites or broths of from symbiotic bacteria obtained from the guts of entomopathogenic nematodes. Phytopathology. 104: S3.16.
Suppression of pecan scab and phytophthora using symbiotic bacteria and their byproducts -
Shapiro Ilan, D.I., Bock, C.H., Hotchkiss, M.W. 2014. Suppression of pecan scab and phytophthora using symbiotic bacteria and their byproducts. Pecan Grower. 25(4):66-74.
Hedging, fungicide distribution and scab control -
Bock, C.H., Stevenson, K., Brenneman, T.B., Hotchkiss, M.W., Smith, M.W., Goff, W., Wells, L., Wood, B.W. 2014. Hedging, fungicide distribution and scab control. Southeastern Pecan Growers Meeting Proceedings. http:sepga.com/files/6213/9468/6929/bock.pdf.
A comparison of UP-PCR and RAPD markers to study genetic diversity of Fusicladium effusum (G. Winter, cause of pecan scab -
Efficacy of fungicides for control of scab on a mid-ripening peach variety in middle Georgia, 2011 Reprint Icon -
Brannen, P.M., Bock, C.H., Hotchkiss, M.W. 2013. Efficacy of fungicides for control of scab on a mid-ripening peach variety in middle Georgia, 2011. Plant Disease Management Reports. 7:STF023.
Efficacy of petal fall and shuck split fungicides for control of scab on peach in middle Georgia, 2012 -
Brannen, P.M., Bock, C.H., Hotchkiss, M.W. 2013. Efficacy of petal fall and shuck split fungicides for control of scab on peach in middle Georgia, 2012. Plant Disease Management Reports. 7:STF022 http://www.plantmanagementnetwork.org/pubtrial/pdmr/.
Efficacy of fungicides for control of scab on a mid-ripening peach variety in middle Georgia, 2012 -
Brannen, P.M., Bock, C.H., Hotchkiss, M.W. 2013. Efficacy of fungicides for control of scab on a mid-ripening peach variety in middle Georgia, 2012. Plant Disease Management Reports. 7:STF021 http://www.plantmanagementnetwork.org/pub/trial/pdmr/.
Unusual pecan diseases that might appear during a wet year -
Bock, C.H., Hotchkiss, M.W., Riley, C.C., Wood, B.W. 2013. Unusual pecan diseases that might appear during a wet year. Pecan Grower. 25:74-77.
Distribution of scab and management of the disease in large pecan trees -
Bock, C.H., Cottrell, T.E., Hotchkiss, M.W., Wood, B.W. 2013. Distribution of scab and management of the disease in large pecan trees. Pecan Grower. 25:22-34.
Fungicide spray coverage from ground-based sprayers in mature pecan trees -
Bock, C.H., Hotchkiss, M.W., Cottrell, T.E., Wood, B.W. 2013. Fungicide spray coverage from ground-based sprayers in mature pecan trees. Phytopathology. 103:S2.17 http://apsjournals.apsnet.org/loi/phyto.
Trunk applications of phosphite for the control of pecan scab -
Bock, C.H., Brenneman, T.B., Hotchkiss, M.W., Wood, B.W. 2013. Trunk applications of phosphite for the control of pecan scab. Phytopathology. 103:S2.17 http://apsjournals.apsnet.org/loi/phyto.
Trunk applications of phosphite for the control of foliar and fruit scab -
Bock, C.H., Brenneman, T.B., Hotchkiss, M.W., Wood, B.W. 2013. Trunk applications of phosphite for the control of foliar and fruit scab. Crop Protection. 54:213-220.
Disease and spray coverage in pecan trees -
Bock, C.H., Hotchkiss, M.W., Wood, B.W. 2013. Disease and spray coverage in pecan trees. Georgia Pecan Growers Association. Available: https://www.georgiapecan.org/conference.da.
Vertical distribution of scab in large pecan trees -
Bock, C.H., Cottrell, T.E., Hotchkiss, M.W., Wood, B.W. 2013. Vertical distribution of scab in large pecan trees. Plant Disease. 97:626-634.
Induced resistance – does it have potential as a tool in pecan disease management? -
Bock, C.H., Wood, B.W., Hotchkiss, M.W. 2012. Induced resistance – does it have potential as a tool in pecan disease management?. Pecan Grower. 24:20-28.
Evaluation of a phosphite fungicide to control pecan scab in the southeastern USA -
Bock, C.H., Brenneman, T.B., Hotchkiss, M.W., Wood, B.W. 2012. Evaluation of a phosphite fungicide to control pecan scab in the southeastern USA. Crop Protection Journal. 34:58-65.
Options for pest and disease control in organic pecan -
Bock, C.H., Shapiro Ilan, D.I., Cottrell, T.E., Hotchkiss, M.W., Wood, B.W. Options for pest and disease control in organic pecan. The Pecan Grower. 23:32-46.2012.(Trade Journal).
Suppression of pecan scab by nickel -
Wood, B.W., Reilly, C.C., Bock, C.H., Hotchkiss, M.W. 2012. Suppression of pecan scab by nickel. HortScience. 47(4):503-508.
Progress in the management of peach fungal gummosis (Botryosphaeria dothidea) in the Southeastern U.S. peach industry -
Beckman, T.G., Reilly, C.C., Pusey, P.L., Hotchkiss, M.W. 2011. Progress in the management of peach fungal gummosis (Botryosphaeria dothidea) in the Southeastern U.S. peach industry. Journal of American Pomological Society. 65(4):192-200.
Making beneficial fungi resistant to fungicides -
Shapiro Ilan, D.I., Hotchkiss, M.W., Reilly, C.C. 2011. Making beneficial fungi resistant to fungicides. Pecan Grower. 23(2):16-23.
An introduction to pecan anthracnose: What a grower needs to know -
Wood, B.W. 2011. An introduction to pecan anthracnose: What a grower needs to know. Pecan Grower. 23(1):28-33.
Influence of nickel on severity of pecan scab -
Wood, B.W., Reilly, C.C., Bock, C.H., Hotchkiss, M.W. 2011. Influence of nickel on severity of pecan scab. Phytopathology. 101:S193.
Characteristics of genetic variability among isolates of Fusicladium species from peach, almond and pecan in the USA -
Evaluation of phosphite to control scab on pecan in the southeastern USA -
Bock, C.H., Brenneman, T.B., Hotchkiss, M.W., Wood, B.W. 2011. Evaluation of phosphite to control scab on pecan in the southeastern USA. Phytopathology. 101:S17.
The distribution of peach scab lesions on the surface of diseased peaches -
Bock, C.H., Hotchkiss, M.W., Okie, W.R., Wood, B.W. 2011. The distribution of peach scab lesions on the surface of diseased peaches. European Journal of Plant Pathology. 130:393-402.
Bamboo: An Underutilized Resource with Extensive Application Possibilities. -
Harrison Dunn, M.L., Hotchkiss, M.W. 2010. Bamboo: An Underutilized Resource with Extensive Application Possibilities. American Bamboo Society Annual Conference.
Comparative impact of artificial selection for fungicide resistance on Beauveria bassiana and Metarhizium brunncum -
Shapiro Ilan, D.I., Reilly, C.C., Hotchkiss, M.W. 2011. Comparative impact of artificial selection for fungicide resistance on Beauveria bassiana and Metarhizium brunncum. Environmental Entomology. 40:59-65.
Regional collaborative research on cold tolerance of exotic biofuel grasses -
Burner, D.M., Tew, T.L., Belesky, D.P., Hale, A.L., Kiniry, J.R., Dunn, M.H., Hotchkiss, M.W., Fritschi, F., Richard Jr, E.P. 2010. Regional collaborative research on cold tolerance of exotic biofuel grasses. American Society of Agronomy Branch Meeting. February 7-8, 2010. Orlando, FL
Alternative pest control research -
Shapiro Ilan, D.I., Cottrell, T.E., Reilly, C.C., Hotchkiss, M.W., Wood, B.W. 2009. Alternative pest control research. In: Proceedings of the Southeastern Pecan Growers Meeting. January 12-14, 2009, Savannah, Georgia. 102:50-61.
Suppressive effects of metabolites from Photorhabdus spp. and Xenorhabdus spp. on phytopathogens of peach and pecan -
Shapiro Ilan, D.I., Reilly, C.C., Hotchkiss, M.W. 2008. Suppressive effects of metabolites from Photorhabdus spp. and Xenorhabdus spp. on phytopathogens of peach and pecan [abstract]. 41st Annual Meeting of Society for Invertebrate Pathology, August 3-7, 2008, Warwick, UK. p. 35. Available: http://www.sipweb.org/Meeting_Abstracts/2008abstracts.pdf.
Bamboo: An Underutilized Resource with Extensive Application Possibilities -
Harrison Dunn, M.L., Hotchkiss, M.W. 2008. Bamboo: An Underutilized Resource with Extensive Application Possibilities. ASA-CSSA-SSSA Annual Meeting Abstracts. CD-ROM.
Testing the potential to suppress pecan disease using byproducts from bacteria -
Shapiro Ilan, D.I., Reilly, C.C., Hotchkiss, M.W. 2008. Testing the potential to suppress pecan disease using byproducts from bacteria. Pecan Grower. 19(3):20-25.
Genotypic and phenotypic characterization of Xylella fastidiosa strains isolated from California, Georgia and Florida -
Livingston, S., Chen, J., Chang, C.J., Hopkins, D., Hotchkiss, M.W., Reilly, C.C., Civerolo, E.L. 2007. Genotypic and phenotypic characterization of Xylella fastidiosa strains isolated from California, Georgia and Florida. [abstract]. Phytopathology. 97:S67.
Suppressive effects of metabolites from Photorhabdus and Xenorhabdus spp. on phytopathogens of peach and pecan -
Shapiro Ilan, D.I., Reilly, C.C., Hotchkiss, M.W. 2009. Suppressive effects of metabolites from Photorhabdus and Xenorhabdus spp. on phytopathogens of peach and pecan. Archives of Phytopathology and Plant Protection. 42:715-728.
DO NOT BE BAMBOOZLED BY BAMBOO: A MOLECULAR STUDY OF THE USDA TEMPERATE BAMBOO COLLECTION -
Barkley, N.L., Newman, M.L. aka Harrison Dunn, M.L., Wang, M.L., Hotchkiss, M.W., Pederson, G.A. 2005. Do not be bamboozled by bamboo: a molecular study of the usda temperate bamboo collection. In: American Bamboo Society National Meeting Abstract.
ASSESSMENT OF THE GENETIC DIVERSITY AND PHYLOGENETIC RELATIONSHIPS OF A TEMPERATE BAMBOO COLLECTION BY USING TRANSFERRED EST-SSR MARKERS -
Barkley, N.L., Newman, M.L. aka Harrison Dunn, M.L., Wang, M.L., Hotchkiss, M.W., Pederson, G.A. 2005. Assessment of the genetic diversity and phylogenetic relationships of a temperate bamboo collection by using transferred est-ssr markers. Genome. 48:731-737
A COMPARISON OF AIRBLAST AND AIR ASSISTED ROTARY ATOMIZER SPRAY TECHNOLOGIES IN PEACH PRODUCTION -
Reilly, C.C., Taylor, K.C., Hotchkiss, M.W. 2004. A comparison of airblast and air assisted rotary atomizer spray technologies in peach production. HortTechnology. v.14(4). p.555-559.
MIXING INSECT DISEASES TO KILL PECAN WEEVILS -
Shapiro Ilan, D.I., Jackson, M.A., Reilly, C.C., Hotchkiss, M.W. 2004. Mixing insect diseases to kill pecan weevils. Pecan Grower. 15(3):10-13.
EFFECTS OF COMBINING AN ENTOMOPATHOGENIC FUNGI OR BACTERIUM WITH ENTOMOPATHOGENIC NEMATODES ON MORTALITY OF CURCULIO CARYAE (COLEOPTERA: CURCULIONIDAE) -
Shapiro Ilan, D.I., Jackson, M.A., Reilly, C.C., Hotchkiss, M.W. 2004. Effects of combining an entomopathogenic fungi or bacterium with entomopathogenic nematodes on mortality of curculio caryae (Coleoptera: Curculionidae). Biological Control. 30:119-126.
THE BENEFICIAL INSECT-KILLING FUNGUS, BEAUVERIA BASSIANA, CAN OVERCOME EFFECTS OF FUNGICIDE SPRAYS -
Shapiro Ilan, D.I., Reilly, C.C., Hotchkiss, M.W., Wood, B.W. 2003. The beneficial insect-killing fungus, beauveria bassiana, can overcome effects of fungicide sprays. Pecan Grower. 14(4):24-27.
BARK CANKER OF UNKNOWN ETIOLOGY DEVELOPING ON PECAN CARYA ILLINOENSIS TREES -
Reilly, C.C., Wood, B.W., Hotchkiss, M.W. 2003. Bark canker of unknown etiology developing on pecan carya illinoensis trees. Phytopathology. 93:73. Abstract.
UPDATE ON RESEARCH TOWARD MICROBIAL CONTROL OF THE PECAN WEEVIL -
Shapiro Ilan, D.I., Cottrell, T.E., Gardner, W., Reilly, C.C., Hotchkiss, M.W., Wood, B.W. 2003. Update on research toward microbial control of the pecan weevil. Southeastern Pecan Growers Meeting Proceedings. 96:103-108
THE POTENTIAL FOR ENHANCED FUNGICIDE RESISTANCE IN BEAUVERIA BASSIANA THROUGH STRAIN DISCOVERY AND ARTIFICIAL SELECTION -
SHAPIRO ILAN, D.I., REILLY, C.C., HOTCHKISS, M.W., WOOD, B.W. THE POTENTIAL FOR ENHANCED FUNGICIDE RESISTANCE IN BEAUVERIA BASSIANA THROUGH STRAIN DISCOVERY AND ARTIFICIAL SELECTION. JOURNAL OF INVERTEBRATE PATHOLOGY. 2002. v.81. p.86-93.
EVALUATION OF FUNGICIDES FOR CONTROL OF PECAN SCAB, 1998. (17-YR-OLD TREES) -
PHYTOPHTHORA SHUCK AND KERNEL ROT, A NEW DISEASE OF PECAN CAUSED BY PHYTOPHTHORA CACTORUM -
RELATIVE SUSCEPTIBILITY OF PECAN CULTIVARS TO ZONATE LEAF SPOT -
ARS News Articles
Last Modified: 5/2/2016
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