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ARS Home » Southeast Area » Byron, Georgia » Fruit and Tree Nut Research » People & Locations » Clive Bock

Clive H Bock
Fruit and Tree Nut Research
Research Plant Pathologist

Phone: (478) 956-6409
Fax: (478) 956-2929

21 DUNBAR ROAD
BYRON , GA 31008
Projects
Mitigating Alternate Bearing of Pecan - Bridge Project
In-House Appropriated (D)
  Accession Number: 435669
Coordinated Development of Genetic Tools for Pecan
Reimbursable Cooperative Agreement (R)
  Accession Number: 431769
Coordinated Development of Genetic Tools for Pecan
Reimbursable Cooperative Agreement (R)
  Accession Number: 431907

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Heterokaryosis and diploid formation among Brazilian isolates of Macrophomina phaseolina -
Evidence for sexual reproduction: identification, frequency and spatial distribution of Venturia effusa (pecan scab) mating type idiomorphs -
Young, C.A., Bock, C.H., Charlton, N.D., Chakradhar, M., Krom, N., Bowen, J.K., Templeton, M., Plummer, K.M., Wood, B.W. 2018. Evidence for sexual reproduction: identification, frequency and spatial distribution of Venturia effusa (pecan scab) mating type idiomorphs. Phytopathology. 108: 837-846.
Ordinal scale estimates of plant disease severity: comparing treatments using a proportional odds model -
Chiang, K., Bock, C.H. 2018. Ordinal scale estimates of plant disease severity: comparing treatments using a proportional odds model. International Epidemiology Workshop. p. 33.
To diagram or not to diagram: Is there a future for diagrammatic visual severity assessments aids? -
Del Ponte, E.M., Pethybridge, S.J., Bock, C.H. 2018. To diagram or not to diagram: Is there a future for diagrammatic visual severity assessments aids?. International Epidemiology Workshop. p. 29.
Efficacy of Bordeaux mixture in reducing pecan scab in the southeastern U.S.A. -
Comparing protection afforded by different organic alternatives to conventional fungicides for reducing scab on pecan -
Efficacy of Bordeaux mixture to control pecan scab in large-plot experiments -
Fine scale population genetic structure and within tree distribution of mating types of Venturia effusa, cause of pecan scab in the USA -
Genetic recombination in Venturia effusa, causal agent of pecan scab -
Modeling the main fungal diseases of winter wheat: constraints and possible solutions -
Control of pecan weevil with microbial biopesticides -
Shapiro Ilan, D.I., Cottrell, T.E., Bock, C.H., Mai, K.T., Boykin, D.L., Wells, L., Hudson, W.G., Mizell III, R.F. 2017. Control of pecan weevil with microbial biopesticides. Environmental Entomology. 46(6):1299-1304. https://doi:10.1093/ee/nvx144.
Draft genome sequence of Venturia carpophila, the causal agent of peach scab -
Chen, C., Bock, C.H., Wood, B.W. 2017. Draft genome sequence of Venturia carpophila, the causal agent of peach scab. Standards in Genomic Sciences. 12:68.
A discussion on disease severity index values. Part II: using the disease severity index for null hypothesis testing -
Chiang, K., Liu, H.I., Tsai, J., Tsai, J., Bock, C.H. 2017. A discussion on disease severity index values. Part II: using the disease severity index for null hypothesis testing. Annals of Applied Biology. 171(3):490-504. https://doi.org/10.1111/aab.12396.
Improving fungal disease forecasts in winter wheat: a critical role of intra-day variations of meteorological conditions -
El Jaroudi, M., Kouadio, L., El Jarroudi, M., Junk, J., Bock, C.H., Tychon, B., Delfosse, P. 2017. Improving fungal disease forecasts in winter wheat: a critical role of intra-day variations of meteorological conditions. Field Crops Research. 213:12-20.
Thermo-stability, dose effects and shelf-life of antifungal metabolite-containing supernatants produced by Xenorhabdus szentirmai -
Hazir, S., Shapiro Ilan, D.I., Bock, C.H., Leite, L. 2018. Thermo-stability, dose effects and shelf-life of antifungal metabolite-containing supernatants produced by Xenorhabdus szentirmai. European Journal of Plant Pathology. 150(2):297-306. https://doi.org/10.1007/s10658-017-1277-7.
Influence of fungicides on gas exchange of pecan foliage -
Wood, B.W., Bock, C.H. 2017. Influence of fungicides on gas exchange of pecan foliage. Plant Pathology. 67(2):265-276. https://doi.org/10.1111/ppa.12753.
Evidence for sexual reproduction in Venturia effusa, causal agent of pecan scab -
Young, C.A., Bock, C.H., Charlton, N.D., Charkradhar, M., Yi, M., Plummer, K.M., Bowen, J.K., Templeton, M., Wood, B.W. 2017. Evidence for sexual reproduction in Venturia effusa, causal agent of pecan scab [abstract]. Mycological Society of America. p. 87.
Identification of pecan scab resistance gene candidates in a pecan provenance collection using a combined bulked segregant analysis and genotyping by sequencing approach -
Alarcon, Y., Bock, C.H., Wood, B.W., Rohla, C., Monteros, M. 2017. Identification of pecan scab resistance gene candidates in a pecan provenance collection using a combined bulked segregant analysis and genotyping by sequencing approach. American Society of Plant Biologists Annual Meeting. p. 129-130.
Description and identification of two new diseases of guariroba palm (Syagrus oleraceae) in Brazil -
A comparison of ground-based air-blast sprayer and aircraft application of fungicides to manage scab in tall pecan trees -
Bock, C.H., Hotchkiss, M.W. 2017. A comparison of ground-based air-blast sprayer and aircraft application of fungicides to manage scab in tall pecan trees. American Phytopathology Society. 107:S5.37.
Incidence-severity relationships for scab on foliage and fruit of pecan -
Bock, C.H. 2017. Incidence-severity relationships for scab on foliage and fruit of pecan. American Phytopathological Society Annual Meeting. 107:S5.45.
High-quality genome of the peach scab pathogen, Venturia carpophila -
Chen, C., Bock, C.H., Wood, B.W. 2017. High-quality genome of the peach scab pathogen, Venturia carpophila. American Phytopathological Society Annual Meeting. 107:S5.134.
Use of the disease severity index for null hypothesis testing -
Chiang, K., Bock, C.H. 2017. Use of the disease severity index for null hypothesis testing. American Phytopathological Society Annual Meeting. 107:S5.6.
Efficacy of a single late-dormant application of mineral oil plus chlorothalonil for control of peach scab, caused by Venturia carpophila -
Glenn, T., Brannen, P.M., Bock, C.H., Hotchkiss, M.W., Pitts, J., Sikora, E. 2017. Efficacy of a single late-dormant application of mineral oil plus chlorothalonil for control of peach scab, caused by Venturia carpophila. American Phytopathological Society Annual Meeting. 107: S5.41.
In vitro evidence for sexual reproduction in Venturia effusa, causal agent of pecan scab -
Charlton, N.D., Mattupalli, C., Bock, C.H., Young, C.A. 2017. In vitro evidence for sexual reproduction in Venturia effusa, causal agent of pecan scab. American Phytopathological Society Annual Meeting. 107:S5.122.
Thermo-stability, dose effects and shelf-life of antifungal compounds produced by the symbiotic bacterium Xenorhabdus szentirmaii -
Hazir, S., Shapiro Ilan, D.I., Bock, C.H., Leite, L.G. 2017. Thermo-stability, dose effects and shelf-life of antifungal compounds produced by the symbiotic bacterium Xenorhabdus szentirmaii. American Phytopathological Society Annual Meeting. 107: S5.26.
Characterization of microsatellites from a genome of Venturia carpophila -
Chen, C., Brannen, P.M., Adaskaveg, J.E., Bock, C.H. 2017. Characterization of microsatellites from a genome of Venturia carpophila. American Phytopathological Society Annual Meeting. 107:S5.124.
Standard area diagrams for aiding severity estimation scientometrics, pathosystems and methodological trends in the last 25 years -
Del Ponte, E.M., Pethybridge, S.J., Bock, C.H., Michereff, S.J., Machado, F., Spolti, P. 2017. Standard area diagrams for aiding severity estimation scientometrics, pathosystems and methodological trends in the last 25 years. Journal of Phytopathology. 107(10):1161-1174. https://doi.org/10.1094/PHYTO-02-17-0069-FI.
Characteristics of spray coverage from an air-blast sprayer, and why this is of concern for disease control in tall pecan trees -
Bock, C.H., Hotchkiss, M.W., Cottrell, T.E. 2017. Characteristics of spray coverage from an air-blast sprayer, and why this is of concern for disease control in tall pecan trees. Pecan Grower. 31(3):28-40.
A discussion on disease severity index values: warning on inherent errors and suggestions to maximize accuracy -
Chiang, K., Liu, H., Bock, C.H. 2017. A discussion on disease severity index values: warning on inherent errors and suggestions to maximize accuracy. Annals of Applied Biology. 171:139-154. https://doi.org/10.1111/aab.12362.
New bacterial products for control of pecan pests -
Trans-cinnamic acid and Xenorhabdus szentirmaii metabolites synergize the potency of some commercial fungicides -
Hazir, S., Shapiro Ilan, D.I., Bock, C.H., Leite, L. 2017. Trans-cinnamic acid and Xenorhabdus szentirmaii metabolites synergize the potency of some commercial fungicides. Journal of Invertebrate Pathology. 145:1-8. https://doi:10.1016/j.jip.2017.03.007.
Effectiveness of agricultural oils alongside fungicides in the late dormant treatment for suppression of peach scab in Georgia, 2016 -
Brannen, P.M., Yost, J.O., Bock, C.H., Hotchkiss, M.W. 2017. Effectiveness of agricultural oils alongside fungicides in the late dormant treatment for suppression of peach scab in Georgia, 2016. Plant Disease Management Reports. 11:STF003.
Efficacy of agricultural oil and fungicide combinations as a late dormant treatment for control of peach scab in Alabama, 2016 -
Sikora, E.J., Pitts, J., Brannen, P.M., Bock, C.H., Hotchkiss, M.W., Gottila, T. 2017. Efficacy of agricultural oil and fungicide combinations as a late dormant treatment for control of peach scab in Alabama, 2016. Plant Disease Management Reports. 11:STF002.
Population genetic structure of Venturia effusa, cause of pecan scab, in the southeastern United States -
Bock, C.H., Hotchkiss, M.W., Young, C.A., Charlton, N.D., Chakradhar, M., Stevenson, K.L., Wood, B.W. 2017. Population genetic structure of Venturia effusa, cause of pecan scab, in the southeastern United States. Journal of Phytopathology. doi:10.1094/PHYTO-10-16-0376-R.
A brief review of some pathology research supported by the Georgia Commodity Commission for Pecans at the USDA-ARS, Byron -
Bock, C.H. 2017. A brief review of some pathology research supported by the Georgia Commodity Commission for Pecans at the USDA-ARS, Byron. Pecan Grower. 27:12-13.
A threshold-based weather model for predicting stripe rust infection in winter wheat -
Effect of windbreaks on wind speed and citrus canker incidence on grapefruit -
Graham, J.H., Myers, M.E., Gottwald, T.R., Bock, C.H. 2016. Effect of windbreaks on wind speed and citrus canker incidence on grapefruit. In: Proceedings of the International Citrus Congress, September 18-23, 2016, Foz do Iguacu, PR, Brazil. p. 114.
Local genetic diversity of Xanthomonas citri subsp. citri in citrus orchards in northwest Paraná state, Brazil -
Severity of scab and its effects on fruit weight in mechanically hedge-pruned and topped pecan trees -
Bock, C.H., Hotchkiss, M.W., Brenneman, T.B., Stevenson, K.L., Goff, W., Smith, M.W., Wells, L., Wood, B.W. 2017. Severity of scab and its effects on fruit weight in mechanically hedge-pruned and topped pecan trees. Plant Disease. doi:10.1094/PDIS-10-16-1473-RE.
The role of phosphites in scab management and residues in pecan kernels -
Bock, C.H., Brenneman, T.B. 2017. The role of phosphites in scab management and residues in pecan kernels. Southeastern Pecan Growers Meeting Proceedings. Available: http://sepga.com/Presentation/WEB2017pres/PresentationsBock.pdf.
Fruit and nut weight in pecan trees canopies in relation to the severity of pecan scab at different heights -
Scab susceptibility of a provenance collection of pecan in 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 in the southeastern USA. Pecan Grower. 27(5):42-55.
Challenges of managing disease in tall orchard trees – pecan scab, a case study -
Bock, C.H., Brennenman, T.B., Wood, B.W., Stevenson, K.L. 2017. Challenges of managing disease in tall orchard trees – pecan scab, a case study. CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources. 12(008):1-18.
Accuracy of plant specimen disease severity estimates: concepts, history, methods, ramifications and challenges for the future -
Bock, C.H., Chiang, K., Del Ponte, E.M. 2016. Accuracy of plant specimen disease severity estimates: concepts, history, methods, ramifications and challenges for the future. CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources. 32:1-21.
Plant disease severity assessment - How rater bias, assessment method and experimental design affect hypothesis testing and resource use efficiency -
Chiang, K., Bock, C.H., Lee, I., El Jarroudi, M., Delfosse, P. 2016. Plant disease severity assessment - How rater bias, assessment method and experimental design affect hypothesis testing and resource use efficiency. Phytopathology. 106(12):1451-1464.
Effect of windbreaks on wind speed and canker incidence and severity on grapefruit -
Graham, J.H., Myers, M.E., Gottwald, T.R., Bock, C.H. 2016. Effect of windbreaks on wind speed and canker incidence and severity on grapefruit. In: International Citrus Congress Proceedings, September 18-23, 2016, Foz do Iguacu, PR, Brazil. p. 114.
Evaluation of resistance to asiatic citrus canker among selections of pera sweet orange (Citrus sinensis) -
Goncalves-Zuliani, A., Nanami, D., Barbieri, B., Guedes, T., Zanutto, C., Bock, C.H., Nunes, W. 2016. Evaluation of resistance to asiatic citrus canker among selections of pera sweet orange (Citrus sinensis). Plant Disease. 100(10):1994-2000.
Draft genome sequence of Fusicladium effusum, cause of pecan scab -
Bock, C.H., Chen, C., Yu, F., Stevenson, K.L., Wood, B.W. 2016. Draft genome sequence of Fusicladium effusum, cause of pecan scab. Standards in Genomic Sciences. 11:36.
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 -
Discussion on calculation of disease severity index values from scales with unequal intervals -
The pecan provenance collection at Byron GA – a unique resource for the long-term survival of the US industry -
Wood, B.W., Grauke, L.J., Bock, C.H. 2016. The pecan provenance collection at Byron GA – a unique resource for the long-term survival of the US industry. Pecan Grower. 27: 28-46.
Evidence for sexual reproduction in Fusicladium effusum -
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.
Characterization of microsatellites in Fusicladium effusum, cause of pecan scab -
Bock, C.H., Chen, C., Yu, F., Stevenson, K.L., Arias De Ares, R.S., Wood, B.W. 2016. Characterization of microsatellites in Fusicladium effusum, cause of pecan scab. Forest Pathology. doi: 10.1111/efp.12278.
The mating type idiomorphs of Fusicladium effusum: identification, frequency and spatial distribution in the southeastern USA -
Young, C.A., Charlton, N.D., Mattupalli, C., Wood, B.W., Bock, C.H. 2016. The mating type idiomorphs of Fusicladium effusum: identification, frequency and spatial distribution in the southeastern USA. European Conference on Fungal Genetics Proceedings. p. 265.
Pecan scab – A retrospective, current status and future management -
Bock, C.H. 2016. Pecan scab – A retrospective, current status and future management. Southeastern Pecan Growers Meeting Proceedings. www.sepga.com/sepga---2016-presentations.html.
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.
Genomic and genotyping characterization of haplotype-based polymorphic microsatellites in Prunus -
Chen, C., Bock, C.H., Beckman, T.G., Wood, B.W., Okie, W.R. 2015. Genomic and genotyping characterization of haplotype-based polymorphic microsatellites in Prunus. Journal of Genetics and Genome Research. 2:014.
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.
Development of microsatellite markers for Fusicladium effusum, the causal agent of pecan scab -
Bock, C.H., Chen, C., Stevenson, K.L., Wood, B.W. 2015. Development of microsatellite markers for Fusicladium effusum, the causal agent of pecan scab. Phytopathology. 105(Suppl. 4):S4.17.
Observation and identification of wood-decay fungi from the heartwood of peach tree limbs in central Georgia, USA -
Weather conditions conducive to infection of winter wheat by Puccinia striiformis sp. tritici race ‘warrior’ -
El Jarroudi, M., Kouadio, A., El Jarroudi, M., Bock, C.H., Tychon, B., Junk, J., Delfosse, P. 2015. Weather conditions conducive to infection of winter wheat by Puccinia striiformis sp. tritici race ‘warrior’. American Phytopathology Society. 105(Suppl. 4):S4.40.
Reaction of detached leaves of different varieties of sweet orange (Citrus sinensis L. Osbeck) to inoculation with Xanthomonas citri subsp. citri (ex Hasse) Gabriel et al. -
Goncalves-Zuliani, A.M., Kern, K.A., Belasque Junior, J., Zanutto, C.A., Hashiguti, H.T., Nakamura, C.V., Bock, C.H., Nunes, W.M. 2015. Reaction of detached leaves of different varieties of sweet orange (Citrus sinensis L. Osbeck) to inoculation with Xanthomonas citri subsp. citri (ex Hasse) Gabriel et al.. Phytopathology. 105(Suppl. 4):S4.51.
Resistance evaluation of Pera (Citrus sinensis) genotypes to citrus canker in greenhouse conditions -
Goncalves-Zuliani, A.M., Nocchi, P.T., Frias, A.A., Nanami, D.S., Soares, L.S., Souza, H.S., Bock, C.H., Nunes, W.W. 2015. Resistance evaluation of Pera (Citrus sinensis) genotypes to citrus canker in greenhouse conditions. American Phytopathology Society. 105(Suppl. 4):S4.51.
Resistance of sweet orange Pera (Citrus sinensis) genotypes to Xanthomonas citri subsp. citri under field conditions -
Goncalves-Zuliani, A.M., Nanami, D., Nocchi, A.T., Frias, A., Franco, J., Zanutto, C.A., Bock, C.H., Nunes, W.M. 2015. Resistance of sweet orange Pera (Citrus sinensis) genotypes to Xanthomonas citri subsp. citri under field conditions. American Phytopathology Society. 105(Suppl. 4):S4.51.
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.
The effects of rater bias and assessment method used to estimate disease severity on hypothesis testing -
Chiang, K., Bock, C.H., El Jarroudi, M., Delfosse, P., Lee, I.H., Liu, H.I. 2016. The effects of rater bias and assessment method used to estimate disease severity on hypothesis testing. Plant Pathology. 65(4):523-535.
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.
Reasons for inconsistent citrus canker control Reprint Icon -
Graham, J.H., Bock, C.H. 2015. Reasons for inconsistent citrus canker control. Citrus Industry. Vol 98: 22-25.
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.
Disease severity estimates - effects of rater accuracy and assessments methods for comparing treatments -
Bock, C.H., El Jarroudi, M., Kouadio, L.A., Mackels, C., Chiang, K., Delfosse, P. 2015. Disease severity estimates - effects of rater accuracy and assessments methods for comparing treatments. Plant Disease. 99:1104-1112.
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.
Methods to assess pecan scab -
Bock, C.H., Gottwald, T.R., Wood, B.W. 2015. Methods to assess pecan scab. Acta Horticulturae. 1070:211-222.
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.
Genome-wide characterization and selection of expressed sequence tag simple sequence repeat primers for optimized marker distribution and reliability in peach Reprint Icon -
Chen, C., Bock, C.H., Okie, W., Gmitter, F.J., Jung, S., Main, D., Beckman, T.G., Wood, B.W. 2014. Genome-wide characterization and selection of expressed sequence tag simple sequence repeat primers for optimized marker distribution and reliability in peach. Tree Genetics and Genomes. 10(5): 1271-1279.
Sequence analysis reveals genomic factors affecting EST-SSR primer performance and polymorphism Reprint Icon -
Chen, C., Bock, C.H., Beckman, T.G. 2014. Sequence analysis reveals genomic factors affecting EST-SSR primer performance and polymorphism. Molecular Genetics and Genomics. 289(6): 1147-1156.
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.
A comparison of raters and disease assessment methods for estimating disease severity for purposes of hypothesis testing -
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.
Development and validation of standard area diagrams as assessment aids for estimating the severity of citrus canker on unripe oranges -
Disease severity assessment in epidemiological studies: accuracy and reliability of visual estimates of Septoria leaf blotch (SLB) in winter wheat -
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.
Research progress for integrated canker management -
Graham, J.H., Gruber, B., Bock, C.H. 2014. Research progress for integrated canker management. Citrus Industry. 95:20-24.
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.
Genetic diversity and population structure of Fusicladium effusum on pecan in the U.S.A. -
Bock, C.H., Wood, B.W., Stevenson, K.L., Arias De Ares, R.S. 2014. Genetic diversity and population structure of Fusicladium effusum on pecan in the U.S.A.. Plant Disease. 98:916-923.
What interval characteristics make a good disease assessment category scale Reprint Icon -
Chian, K., Liu, S., Bock, C.H., Gottwald, T.R. 2014. What interval characteristics make a good disease assessment category scale. Phytopathology. 104(6): 575-585 http://dx.doi.org/10.1094?PHYTO-10-13-0279-R.
Identification of a naturally produced antifungal compound with activity against pecan scab -
Bock, C.H., Shapiro Ilan, D.I., Wedge, D.E., Cantrell, C.L. 2014. Identification of a naturally produced antifungal compound with activity against pecan scab. Pecan Grower. 25:52-60.
A comparison of UP-PCR and RAPD markers to study genetic diversity of Fusicladium effusum (G. Winter, cause of pecan scab -
A comparison of the bioassay test and culture to detect Xanthomonas citri subsp. citri -
Fusicladium effusum -
Bock, C.H. 2013. Fusicladium effusum. CABI Crop Protection Compendium. Wallingford, UK: www.cabi.org/cpc.
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/.
Peronosclerospora sorghi -
Bock, C.H. 2013. Peronosclerospora sorghi. CABI Crop Protection Compendium. Wallingford, UK: www.cabi.org/cpc.
Identification of the antifungal compound, trans-cinnamic acid, produced by Photorhabdus luminescens, a potential biopesticide against pecan scab -
Bock, C.H., Shapiro Ilan, D.I., Wedge, D.E., Cantrell, C.L. 2013. Identification of the antifungal compound, trans-cinnamic acid, produced by Photorhabdus luminescens, a potential biopesticide against pecan scab. Journal of Pest Science. 87(1):155-162.
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.
A comparison of different category scales for estimating disease severity -
Chiang, K., Liu, S., Bock, C.H., Gottwald, T.R. 2013. A comparison of different category scales for estimating disease severity. Plant Disease Epidemiology International Workshop Proceedings. August 22-25, 2013, Beijing, China:P36 (69pp).
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.
Magnetic and electric fields induce directional response in Steinernema carpocapsae -
Ilan, T., Kim-Shapiro, D., Bock, C.H., Shapiro Ilan, D.I. 2013. Magnetic and electric fields induce directional response in Steinernema carpocapsae. International Journal for Parasitology. 43:781-784.
A comparison of culture and bioassay for detecting citrus canker -
Bock, C.H., Gottwald, T.R., Graham, J.H. 2013. A comparison of culture and bioassay for detecting citrus canker. Phytopathology. 103:S2.16 http:11apsjournals.apsnet.org/loi/phyto.
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.
Organic methods for control of insect pests and diseases of pecan and peach -
Shapiro Ilan, D.I., Bock, C.H. 2013. Organic Methods for Control of Insect Pests and Diseases of Pecan and Peach. eOrganic. http://www.extension.org/pages/66504.
Integrated Management of Citrus Canker -
Graham, J.H., Gruber, B., Bock, C.H. 2013. Integrated Management of Citrus Canker. Citrus Industry. 92: 12-17.
Disease and spray coverage in pecan trees -
Bock, C.H. 2013. Disease and spray coverage in pecan trees. Southeastern Pecan Growers Meeting Proceedings. www.sepga.com/files/3413/6509/9081/Bock_SEPGA.pdf.
The effect of Horsfall-Barratt category size on the accuracy and reliability of estimates of pecan scab severity -
Bock, C.H., Van Den Bosch, F., Parnell, S., Wood, B.W., Gottwald, T.R. 2013. The effect of Horsfall-Barratt category size on the accuracy and reliability of estimates of pecan scab severity. Plant Disease. 97:797-806.
Effect of the duration of inoculum exposure on development of citrus canker symptoms on seedlings of Swingle citrumelo -
Bock, C.H., Graham, J.H., Gottwald, T.R., Cook, A.Z., Parker, P.P. 2014. Effect of the duration of inoculum exposure on development of citrus canker symptoms on seedlings of Swingle citrumelo. European Journal of Plant Pathology. 138:237-245.
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.
Pecan scab severity-effects of assessment methods -
Bock, C.H., Wood, B.W., Gottwald, T.R. 2013. Pecan scab severity-effects of assessment methods. Plant Disease. 97:675-684.
Predisposition of citrus foliage to infection with Xanthomonas citri subsp. citri -
Bock, C.H., Graham, J.H., Cook, A.Z., Parker, P., Gottwald, T.R. 2013. Predisposition of citrus foliage to infection with Xanthomonas citri subsp. citri. Journal of Plant Pathology. 95:99-106.
Controlling insect pests & diseases in organic pecan and peach production -
Shapiro Ilan, D.I., Bock, C.H. 2012. Controlling insect pests & diseases in organic pecan and peach production. Georgia Organics Incorporated. http://vimeo.com/43396297.
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.
Predisposition of citrus foliage to infection with Xanthomonas citri subsp. citri. -
Bock, C.H., Graham, J.H., Cook, A.Z., Parker, P., Gottwald, T.R. 2012. Predisposition of citrus foliage to infection with Xanthomonas citri subsp. citri. [abstract]. Phytopathology. 102:S4.13.
Development and validation of standard area diagrams to aide assessment of pecan scab symptoms on pecan fruit -
Yadav, N.S., De Vos, S.M., Bock, C.H., Wood, B.W. 2013. Development and validation of standard area diagrams to aide assessment of pecan scab symptoms on pecan fruit. Plant Pathology. 62:325-335. 2013.
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).
Short distance dispersal of splashed bacteria of Xanthomonas citri subsp. citri from canker-infected grapefruit tree canopies in turbulent wind -
Bock, C.H., Cook, A.Z., Parker, P.E., Gottwald, T.R., Graham, J.H. 2012. Short distance dispersal of splashed bacteria of Xanthomonas citri subsp. citri from canker-infected grapefruit tree canopies in turbulent wind. Plant Pathology. 61:829-836.
The effect of wind on dispersal of splash-borne Xanthomonas citri subsp citri at different heights and distances downwind of canker-infected grapefruit trees -
Bock, C.H., Gottwald, T.R., Cook, A.Z., Parker, P.E., Graham, J.H. 2012. The effect of wind on dispersal of splash-borne Xanthomonas citri subsp citri at different heights and distances downwind of canker-infected grapefruit trees. Journal of Plant Pathology. 93:667-677.
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.
Processess involved in the dispersal of Xanthomonas citri pv. citri from canker-infected citrus canopies, and in the infection of citrus foliage -
Bock, C.H., Gottwald, T.R. 2011. Processess involved in the dispersal of Xanthomonas citri pv. citri from canker-infected citrus canopies, and in the infection of citrus foliage. In: Proceedings of the Workshop on Xanthomonas citri/Citrus canker, November 17-18, 2011, Ribeirao Preto, Brazil. p. 27-30.
A survey of survival and activity of citrus canker lesion populations on foliage, fruit and shoots in a Florida grapefruit orchard in 2009 and 2010 -
Bock, C.H., Gottwald, T.R., Graham, J.H. 2011. A survey of survival and activity of citrus canker lesion populations on foliage, fruit and shoots in a Florida grapefruit orchard in 2009 and 2010. In: Proceedings of the Workshop on Xanthomonas citri/Citrus canker, November, 17-18, 2011, Ribeirao Preto, Brazil. p. 24-26.
Processes involved in the dispersal of Xanthomonas citri pv. citri from canker-infectd citrus canopies, and in the infection of citrus foliage -
Bock, Clive H., Gottwald, Timothy R. 2011. Processes involved in the dispersal of Xanthomonas citri pv. citri from canker-infectd citrus canopies, and in the infection of citrus foliage. In: Proceedings of the Workshop on Xanthomonas citri/Citrus canker, November 17-18, 2011, Ribeirao Preto, Brazil. p. 27-30.
Processess involved in the dispersal of Xanthomonas citri pv. citri from canker-infected citrus canopies, and in the infection of citrus foliage -
Bock, C.H., Gottwald, T.R. 2011. Processess involved in the dispersal of Xanthomonas citri pv. citri from canker-infected citrus canopies, and in the infection of citrus foliage. In: Proceedings of the Workshop on Xanthomonas citri/Citrus canker, November 17-18, 2011, Ribeirao Preto, Brazil. p. 27-30.
Detection and measurement of plant disease symptoms using visible-wavelength photography and image analysis -
Bock, C.H. and Nutter, F.W. Detection and measurement of plant disease symptoms using visible-wavelength photography and image analysis. CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources 6: 1-15. doi: 10.1079/ PAVSNNR20116027. Available: http://www.cabi.org/cabreviews/. 2011. (Review).
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 -
Activity of citrus canker lesions on leaves, shoots and fruit of grapefruit in a Florida orchard from June 2010 to January 2011 -
Bock, C.H., Gottwald, T.R., Graham, T.H. 2011. Activity of citrus canker lesions on leaves, shoots and fruit of grapefruit in a Florida orchard from June 2010 to January 2011 [abstract]. Phytopathology. 101:S17.
Use of standard area diagrams to improve assessment of pecan scab on fruit -
Bock, C.H., Yadav, N.S., De Vos, S.M., Wood, B.W. 2011. Use of standard area diagrams to improve assessment of pecan scab on fruit. Phytopathology. 101:S196.
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.
Distribution of canker lesions on the surface of diseased grapefruit -
Bock, C.H., Parker, P.E., Gottwald, T.R. 2011. Distribution of canker lesions on the surface of diseased grapefruit. Plant Pathology. 60:986-991.
Infection and decontamination of citrus-canker-inoculated leaf surfaces -
Bock, C.H., Parker, P. E., Cook, A. Z., Graham, J. H. and Gottwald, T. R. Infection and decontamination of citrus canker-inoculated leaf surfaces. Crop Protection 30: 259-264. 2011.
Exacerbation of citrus canker by citrus leafminer, Phyllocnistis citrella in Florida -
Hall, D.G., Gottwald, T.R., Bock, C.H. 2010. Exacerbation of citrus canker by citrus leafminer, Phyllocnistis citrella in Florida. Florida Entomologist. 93:558-566.
A new class of fungicides for pecans -
Brenneman, T., Bock, C.H., Jason, B.J. 2010. A new class of fungicides for pecans. Pecan Grower. 22(2):8-9.
Distribution of canker lesions on grapefruit in Florida -
Bock, C.H., Parker, P.E., Gottwald, T.R. 2010. Distribution of canker lesions on grapefruit in Florida [abstract]. Phytopathology. 100:S15.
The activity of citrus canker lseions on grapefruit in Florida, June 2009-January 2010 -
Bock, C.H., Parker, P.E., Gottwald, T.R., Graham, J.H. 2010. The activity of citrus canker lesions on grapefruit in Florida, June 2009-January 2010 [abstract]. Phytopathology. 100:S15.
Wind speed and wind-associated leaf injury affect severity of citrus canker on Swingle citrumelo -
Bock, C.H., Graham, J.H., Gottwald, T.R., Cook, A.Z., Parker, P.E. 2010. Wind speed and wind-associated leaf injury affect severity of citrus canker on Swingle citrumelo. European Journal of Plant Pathology. 128:21-38.
Wind speed effects on the quantity of Xanthomonas citri subsp. citri dispersed downwind from canopies of grapefruit trees infected with citrus canker -
Bock, C.H., Graham, J.H., Gottwald, T.R., Cook, A.Z., Parker, P.E. 2010. Wind speed effects on the quantity of Xanthomonas citri subsp. citri dispersed downwind from canopies of grapefruit trees infected with citrus canker. Plant Disease. 94:725-736.
METHODS TO SAMPLE AIR BORNE PROPAGULES OF ASPERGILLUS FLAVUS -
Bock, C.H., Cotty, P.J. 2006. Methods to sample air borne propagules of Aspergillus flavus. European Journal of Plant Pathology. 114:357-362.
DEVICES TO SAMPLE AIRBORNE PROPAGULES OF ASPERGILLUS FLAVUS IN THE DESERT REGIONS OF SOUTHWEST ARIZONA -
Bock, C.H., Cotty, P. 2003. Devices to sample airborne propagules of aspergillus flavus in the desert regions of southwest arizona. Phytopathology. 93: S9.
DEVELOPMENT OF EYESPOT ON WINTER WHEAT IN THE UK: INFECTION AND LESION DEVELOPMENT ON STEMS IN RELATION TO THERMAL TIME -
Bock, C.H., Wan, A., Fitt, B.L., Jenkyn, J., Harvey, J., Goulds, A. 2003. Development of eyespot on winter wheat in the uk: infection and lesion development on stems in relation to thermal time. Phytopathology. 93:S10.
DEVELOPMENT OF EYESPOT ON WINTER WHEAT IN THE UK: PENETRATION AND INFECTION OF LEAF SHEATHS IN RELATION TO THERMAL TIME -
Bock, C.H., Wan, A., Fitt, B.L., Jenkyn, J., Harvey, J., Goulds, A. 2003. Development of eyespot on winter wheat in the uk: penetration and infection of leaf sheaths in relation to thermal time. Phytopathology. 93:S88.
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