Morales, L., Repka, A., Swarts, K. L., Stafstrom, W. C., He, Y., Sermons, S. M., Yang, Q., Lopez‐Zuniga, L.O., Rucker, E., Thomason, Wade, E., Nelson, R.J.,               and Balint‐Kurti, P. J. (2020). Genotypic and phenotypic characterization of a large, diverse population of maize near‐isogenic lines. The Plant                      Journal. https://doi.org/10.1111/tpj.14787

 Kolkman, J.M., J. Strable, K. Harline, D.E. Kroon, T. Wiesner-Hanks, P.J. Bradbury and R.J. Nelson.  2019.  Maize nested introgression library provides                 evidence for the involvement of liguless1 in resistance to northern leaf blight. G3: Genes, Genomes, Genetics. https://doi.org/10.1534/g3.120.401500 

Aoun, M., W. Stafstrom, P. Priest, J. Fuchs, G.L. Windham, W.P. Williams, and R.J. Nelson. 2020. Low-cost grain sorting technologies to reduce mycotoxin         contamination in maize and groundnut. Food Control: https://doi.org/10.1016/j.foodcont.2020.107363 

Nelson, R. 2020.  International agriculture’s needed shift from energy intensification to agroecological intensification.  Food Policy: 101815.

Phillips, E., F. Ngure, L. Smith, E. Makule, P.C. Turner, R. Nelson, M. Kimanya, R. Stoltzfus and N. Kassim.  2020.  Protocol for the trial to establish a causal          link between mycotoxin exposure and child stunting: a cluster randomized trial.  BMC Public Healthhttps://doi.org/10.1186/s12889-020-08694-6

Nelson, R.  2020.  International plant pathology: past and future contributions to global food security.  Phytopathology 11(2): 245-253. 

Ortiz O., Thiele G., Nelson R., Bentley J.W. (2020) Participatory research (PR) at CIP with potato farming systems in the Andes: Evolution and prospects. In: Campos H., Ortiz O. (eds) The Potato Crop. Springer


Wiesner-Hanks, T., Wu, H., Stewart, E., DeChant, C., Kaczmar, N., Lipson, H., Gore, M.A., and Nelson, R. J. 2019. Millimeter-level plant disease detection              from aerial photographs via deep learning and crowdsourced data. Frontiers in Plant Science, 10 (December), 1–11.                                                                 https://doi.org/10.3389/fpls.2019.01550 

Wu, H., Wiesner-Hanks, T., Stewart, E. L., DeChant, C., Kaczmar, N., Gore, M. A., Nelson, R.J., and Lipson, H. (2019). Autonomous Detection of Plant                      Disease Symptoms Directly from Aerial Imagery. The Plant Phenome Journal 2(1), 0. https://doi.org/10.2135/tppj2019.03.0006

Falcon, Celeste; Kaeppler, SM; Spalding, EP; Miller, ND; Haase, N; Al Khalifah, N; Bohn, M; Buckler, ES; Campbell, DA; Ciampitti, I; Coffey, L; Edwards, J;               Ertl, D; Flint-Garcia, S; Gore, MA; Graham, C; Hirsch, CN; Holland, JB; Jarquin, D; Knoll, J; Lauter, N; Lawrence-Dill, CJ; Lee, EC; Lorenz, A; Lynch; JP;                 Murray, SC; Nelson, RJ; Romay, MC; Rocheford, T; Schnable, PS; Scully, B; Smith, M; Springer, N; Tuinstra, MR; Walton, R; Weldekidan, T; Wisser, RJ;             Xu, W; de Leon, N; 2019.  Relative utility of agronomic, phenological, and morphological traits for assessing genotype-by-environment interaction in         maize inbreds. Crop Sci. 2020;1-20. https://doi.org/10.1002/csc2.20035

 Kolkman, J.M., J. Strable, K. Harline, D.E. Kroon, T. Wiesner-Hanks, P.J. Bradbury and R.J. Nelson.  2019.  Maize nested introgression library provides                 evidence for the involvement of liguless1 in resistance to northern leaf blight.  Doi: https:/doi.org/10.1101/818518. On BioRxiv:                                               http://biorxiv.org/cgi/content/short/818518v1

 Stewart, E. L., Wiesner-Hanks, T., Kaczmar, N., DeChant, C., Wu, H., Lipson, H., Nelson, R.J. and Gore, M. A. 2019. Quantitative Phenotyping of Northern          Leaf Blight in UAV Images Using Deep Learning. Remote Sensing, 11(19), 1–10. https://doi.org/10.3390/rs11192209

Bullock, D., A. Mangeni, T. Wiesner-Hanks, C. DeChant, E. Stewart, N. Kaczmar, R.J. Nelson, M.A. Gore, and H. Lipson.  2019. Automated crabgrass                    detection in aerial imagery with context.  arXiv preprint arXiv:1910.00652 

Doblas- Ibáñez, P., Deng, K., Vasquez, M. F., Giese, L., Cobine, P. A., Kolkman, J. M., King, H., Jamann, T.M., Balint-Kurti, P., De la Fuent, L., Mackey, D.,               Nelson, R.J., and Smith, L. G. 2019. Dominant, heritable resistance to Stewart’s wilt in maize is associated with an enhanced vascular defense                     response to infection with Pantoea stewartii. Molecular Plant-Microbe Interactions, 32(12), 1581–1597. https://doi.org/10.1094/MPMI-05-19-0129-R

Morales, L., C.T. Zila, D.E. Moreta, M.M. Arbelaez, P.G. Balint-Kurti, J.B. Holland and R.J. Nelson.  2019.  Diverse mechanisms of resistance to Fusarium              verticillioides infection and fumonisin contamination in four maize recombinant inbred line families.  Toxins 11(2), 86;                                                               https://doi.org/10.3390/toxins11020086 

Ortiz, O., R. Nelson, M. Olanya, G. Thiele, R. Orrego, W. Pradel, R. Kakehunzire, G. Woldegiorgis, J. Gabriel, J. Vallejo, and X. Kaiyun.  2019.  Human and              technical dimensions of potato IPM using farmer field schools: CIP and partners’ experience with potato late blight management.  Journal of                      Integrated Pest Management 10 (1): 4.  https://doi.org/10.1093/jipm/pmz002

 Lopez-Zuniga, L.O., P. Wolters, S. Davis, T. Weldekidan, J. Kolkman, R. Nelson, K. Hooda, E. Rucker, W. Thomason, R. Wisser and P. Balint-Kurti.  2019.              Using maize chromosome segment substitution line populations for the identification of loci associated with multiple disease resistance.  G3:                    Genes, Genomes, Genetics 9 (1): 189-201; https://doi.org/10.1534/g3.118.200866 

Mutiga, S., N. Chepkwony, O. A. Hoekenga, S.A. Flint-Garcia and R.J. Nelson. 2019. The role of ear environment in post-harvest susceptibility of maize to        toxigenic Aspergillus flavus.  Plant Breeding 138(1): 38-50.  DOI: 10.1111/pbr.12672

Klessig, D.F., M. Manohar, S. Baby, A. Koch, W. Danquah, B. Wiseborn, E. Luna, H.-J. Park, J.M. Kolkman, B.G. Turgeon, and R. Nelson.  2019.  Nematode         ascaroside enhances resistance in a broad spectrum of plant–pathogen systems.  Journal of Phytopathology 167 (5): 265-272.

Minker, Katharine R; M. L. Biedrzycki; A. Kolagunda; S. Rhein; F. J. Perina; S. S. Jacobs; M. Moore; T. M. Jamann; Q.Yang; R. Nelson; 2018.  Semiautomated      confocal imaging of fungal pathogenesis on plants: Microscopic analysis of macroscopic specimens. Microscopy Research and Technique 81 (2): 141-      152.

Al Khalifah, N., D. A. Campbell, C. M. Falcon, J. M. Gardiner, N. D. Miller, M. C. Romay, R. Walls, R. Walton, C-T. Yeh, M. Bohn and R. Nelson. 2018.  Maize        Genomes to Fields: 2014 and 2015 field season genotype, phenotype, environment, and inbred ear image datasets. BioMed Central, BMC research           notes 11 (1): 452.

Morales, L., Marino, T.P., Wendt, A.J., Fouts, J.Q., Holland, J.B., and Nelson, R.J.  2018.  Dissecting symptomatology and fumonisin contamination                       produced by Fusarium verticillioides in maize ears. Phytopathology, 5 Nov 2018, DOI: 10.1094/PHYTO-05-18-0167-R 

Wiesner-Hanks, T., Stewart, E. L., Kaczmar, N., DeChant, C., Wu, H., Nelson, R. J., Lipson, H., and Gore, M. A. 2018. Image set for deep learning: field                 images of maize annotated with disease symptoms. BMC Research Notes In Press doi:10.1186/s13104-018-3548-6

Mideros, S.X., Chung, C.-L., Wiesner-Hanks, T., Poland, J., Wu, D., Fialko, A.A., Turgeon, G., Nelson, R., 2018. Determinants of virulence and in-vitro                    development colocalize on a genetic map of Setosphaeria turcica.   Phytopathology. doi:10.1094/PHYTO-01-17-0021-R


Nelson, R.J., T. Wiesner-Hanks, R. Wisser, and P. Balint-Kurti. 2017. Navigating complexity to breed disease-resistant crops. Nature Reviews Genetics 19:21-33.

Mideros, X.M., C.L. Chung, T. Wiesner-Hanks, J.A. Poland, D. Wu, A.A. Fialko, B.G. Turgeon, and R.J. Nelson. 2017. Determinants of virulence and in vitro development colocalize on a genetic map of Setosphaeria turcica. Phytopathology 108(2):254-263.

Yang, Q., Y. He, M. Kabahuma, T. Chaya, A. Kelly, E. Borrego, Y. Bian, F. El Kasmi, L. Yang, P. Teixeira, J. Kolkman, R. Nelson, M. Kolomiets, J. Dangl, R. Wisser, J. Caplan, X. Li, N. Lauter, and P. Balint-Kurti. 2017. A gene encoding maize caffeoyl-CoA O-methyltransferase confers quantitative resistance to multiple pathogensNature Genetics 49(9): 1364-1372.

DeChant, C., T. Wiesner-Hanks, S. Chen, E.L. Stewart, J. Yosinski, M.A. Gore, R.J. Nelson, and H. Lipson. Automated identification of northern leaf blight-infected maize plants from field imagery using deep learning. Phytopathology 107(11):1426-1432.

Smith, L., M.N.N. Mbuya, A.J. Predergast, P.C. Turner, S. Ruboko, J.H. Humphrey, R.J. Nelson, A. Chigumira, G. Kembo, and R.J. Stolzfus. 2017. Determinants of recent aflatoxin exposure among pregnant women in rural ZimbabweMolecular Nutrition and Food Research 61(9): 1601049.

Stasiewicz, M., T.D.O. Falade, M. Mutuma, S.K. Mutiga, J.J.W. Harvey, G. Fox, T.C. Pearson, J.W. Muthomi, and R.J. Nelson. 2017. Multi-spectral kernel sorting to reduce aflatoxins and fumonisins in Kenyan maize. Food Control 78:203-214.

Mutiga, S., L. Morales, S. Angwenyi, J. Wainaina, J. Harvey, B. Das, and R.J. Nelson. 2017. Association between agronomic traits and aflatoxin accumulation in diverse maize lines grown under two soil nitrogen levels in Eastern KenyaField Crops Research 205:124-134.


Smith, L.E., M. Stasiewicz, R. Hestrin, L. Morales, S. Mutiga, and R.J. Nelson. 2016. Examining environmental drivers of spatial variability in aflatoxin accumulation in Kenyan maize: Potential utility in risk prediction models. African Journal of Food, Agriculture, Nutrition and Development 16(3):11086-11105.

Wiesner-Hanks, T.E. and R.J. Nelson. 2016. Multiple disease resistance in plants. Annual Review of Phytopathology 54:229-252.

Jamann, T.M., X. Luo, L. Morales, J.M. Kolkman, C.L. Chung, and R.J. Nelson. 2016. A remorin gene is implicated in quantitative disease resistance in maizeTheoretical and Applied Genetics 129(3):591-602.


Mutiga, S. K., V. Hoffmann, J.W. Harvey, M.G. Milgroom., and R.J. Nelson. 2015. Assessment of aflatoxin and fumonisin contamination of maize in western Kenya. Phytopathology 105(9):1250-1261.

Benson, J.M., J.A. Poland, B.M. Benson, E.L. Stromberg, and R.J. Nelson. 2015. Resistance to gray leaf spot of maize: genetic architecture and mechanisms elucidated through nested association mapping and near-isogenic line analysis. PLoS Genetics. DOI: 10.1371/journal.pgen.1005045


Nelson, R. and R. Coe. 2014. Transforming research and development practice to support agroecological intensification of smallholder farming. Journal of International Affairs 67(2):107–127.

Olukolu, B.A, G.-F. Wang, V. Vontimitta, S. Marla, J. Ji, E. Gachomo, K. Chu, A. Negeri, J. Benson, R. Nelson, P. Bradbury, D. Nielsen, J.B. Holland, P.J. Balint-Kurti, and G. Johal. 2014. A genome-wide association study of the maize hypersensitive defense response identifies genes that cluster in related pathways. PLoS Genetics 10(8):e1004562.

Jamann, T.M., J.A. Poland, J.M. Kolkman, L.G. Smith, and R.J. Nelson. 2014 Unraveling genomic complexity at a quantitative disease resistance locus in maizeGenetics 198:333-344.

Mutiga, S.K., V. Were, V. Hoffmann, J.W. Harvey, M.G. Milgroom, and R.J. Nelson. 2014. Extent and drivers of mycotoxin contamination: inferences from a survey of Kenyan maize mills.  Phytopathology 104:1221-1231.

Mideros, S.X., M.L. Warburton, T.M. Jamann, G.L. Windham, W.P. Williams, and R.J. Nelson. 2014. Quantitative trait loci influencing mycotoxin contamination of maize: Analysis by linkage mapping, characterization of near-isogenic lines, and meta-analysis.  Crop Science 54:127-142.


Harvey, J., B. Gnonlonfin, M. Fletcher, G. Fox, S. Trowell, A. Berna, R. Nelson, and R. Darnell.  2013.  Aflatoxins: Finding solutions for food safetyIFPRI Focus 20, Brief 19.

Nelson, R. and R. Coe.  2013.  Agroecological Intensification of Smallholder Farming.  In The Oxford Handbook of Food, Politics and Society. R Herring, Ed.


Jamann, T.,  Nelson, R., and P. Balint-Kurti. 2013. The Genetic Basis of Disease Resistance in Maize. In Genomics Applications in Plant Breeding. R. Tuberosa and R. Varshney, Eds.

Mideros, S.X., G.L. Windham, W. P. Williams, and R.J. Nelson. 2012.  Tissue-specific components of resistance to Aspergillus ear rot of maizePhytopathology 201:787-793.

Chia JM, Song C, Bradbury PJ, Costich D, de Leon N, Doebley J, Elshire RJ, Gaut B, Geller L, Glaubitz JC, Gore M, Guill KE, Holland J, Hufford MB, Lai J, Li M, Liu X, Lu Y, McCombie R, Nelson R, Poland J, Prasanna BM, Pyhäjärvi T, Rong T, Sekhon RS, Sun Q, Tenaillon MI, Tian F, Wang J, Xu X, Zhang Z, Kaeppler SM, Ross-Ibarra J, McMullen MD, Buckler ES, Zhang G, Xu Y, and D. Ware. 2012. Maize HapMap2 identifies extant variation from a genome in flux. Nature Genetics 44:803-807.


Wisser, R.J., J.M. Kolkman, M.E. Patzoldt, J.B. Holland, J. Yu, M. Krakowsky, R.J. Nelson, and P.J. Balint-Kurti. 2011. Multivariate analysis of maize disease resistances suggests a pleiotropic genetic basis and implicates a GST gene. Proceedings of the National Academy of Science 108(18):7339-7344.

Poland, J.A., P.J. Bradbury, E.S. Buckler, and R.J. Nelson. 2011. Genome-wide nested association mapping of quantitative resistance to northern leaf blight in maizeProceedings of the National Academy of Science 108(17):6893-6898.

Chung, C.-L., J. Poland, K. Kump, J. Benson, J. Longfellow, E. Walsh, P. Balint-Kurti, and R.J. Nelson.  2011.  Targeted discovery of quantitative trait loci for resistance to northern leaf blight and other diseases of maize.  Theoretical and Applied Genetics 123:307-326.

Poland, J.A. and R.J. Nelson. 2011. In the eye of the beholder: the effect of rater variability and different rating scales on QTL mappingPhytopathology 101:290-298.


Chung, Chia-Lin, Joy M. Longfellow, Ellie K. Walsh, George Van Esbroeck, Peter Balint-Kurti, and Rebecca J. Nelson. 2010. Resistance loci affecting distinct stages of fungal pathogenesis: use of introgression lines for QTL mapping and characterization in the maize-Setosphaeria turcica pathosystemBMC Plant Biology 10:103-127.

Chung, C., Jamann, J., Longfellow, J., and Nelson, R. 2010. Characterization and fine-mapping of a resistance locus for northern leaf blight in maize bin 8.06. Theoretical and Applied Genetics 121(2):205-227.

Nelson, R.J.  2010. Pest Management, Farmer Incomes and Health Risks in SSA:  Pesticides, Host Plant Resistance and Other Measures. In The African Food System and its Interaction with Human Health and Nutrition: Research and Policy Priorities, P. Pinstrup-Andersen, Ed.  Cornell University Press: New York. Pages 109-127.

Mideros, S. X., G.L. Windham, W.P. Williams, and R.J. Nelson. Aspergillus flavus biomass in maize estimated by quantitative real-time polymerase chain reaction is strongly correlated with aflatoxin concentrationPlant Disease 93:1163-1170.


Garrett, K. A., L. N. Zúñiga, E. Roncal, G. A. Forbes, C. C. Mundt, Z. Su, and R. J. Nelson.  2009.  Intraspecific functional diversity in hosts and its effect on disease risk across a climatic gradient.  Ecological Applications 19:1868-1883.

Poland, J., P.J. Balint-Kurti, R.J. Wisser, R.C. Pratt and R.J. Nelson. 2009.  Shades of gray: The world of quantitative disease resistance. Trends in Plant Science 14:21-29.


Ortiz, O., Frias, G., Ho, R., Cisneros, H., Nelson, R. Castillo, R., Orrego, R., Pradel, W., Alcazar, J., and Bazan, M. 2008. Organizational learning through participatory research: CIP and CARE in Peru. Agriculture and Human Values 25:419-431.

Wisser, R.J., Murray, S.C., J.M. Kolkman, H. Ceballos and R.J. Nelson. 2008. Selection mapping of loci for quantitative disease resistance in a diverse maize population. Genetics 180:583-599.


Wulff, E.G., W. Perez, R.J. Nelson, M. Bonierbale, J.A. Landeo and J.A. Forbes. 2007. Identification of stable resistance to Phytophthora infestans in potato genotypes evaluated in field experiments in PeruExperimental Agriculture 43:1-11.


Nicklin, C., M. Rivera and R.J. Nelson. 2006. Realizing the potential of an Andean legume: roles of market-led and research-led innovations. International Journal of Agricultural Sustainability 4(1):61-78.

Wisser, R.J., Balint-Kurti, P.J., and R.J. Nelson. 2006. The genetic architecture of disease resistance in maize: a synthesis of published studies. Phytopathology 96(2):120-129.


Wisser, R.J., Qi, S., Kresovich, S., and R.J. Nelson. 2005. Identification and characterization of regions of the rice genome associated with broad-spectrum, quantitative disease resistance. Genetics 169:2277-2293.

Andrade-Piedra, J., R. Hijmans, G. Forbes, W.E. Fry and R.J. Nelson. 2005. Simulation of potato late blight in the Andes. 1: Modification and parameterization of the LATEBLIGHT model. Phytopathology 95(10):1191-1199.

Garry, G., A. Salas, G. Forbes, W. Perez, M. Santa Cruz, and R.J. Nelson. 2005. Host specialization not detected among isolates of the EC-1 lineage of Phytophthora infestans attacking wild and cultivated potatoes in Peru. European Journal of Plant Pathology 113(1):71-81.


Ortiz, O., Garrett, K. A., Heath, J. J., Orrego, R., and Nelson, R. J. 2004. Management of potato late blight in the Peruvian highlands: Evaluating the benefits of Farmer Field Schools and Farmer Participatory Research. Plant Disease 88:15-44.

Naylor, R.L., W. P. Falcon, R.M. Goodman, M.M. Jahn, T. Sengooba, H. Tefera, and R.J. Nelson. 2004. Biotechnology in the Developing World: A Case for Increased Investments in Orphan Crops. Food Policy 29(1):15-44.

R.J. Nelson, R.L. Naylor, M.M. Jahn. 2004. The role of genomics research in improvement of “orphan” crops. Crop Science 44:1901-1904.

Trognitz, F.C., P.M. Manosalva, D.O. Niño-Liu, Ma. del R. Herrera, M. Ghislain, B.R. Trognitz and R.J. Nelson. 2002. Plant defense genes associated with quantitative resistance to potato late blight in Solanum phureja x dihaploid S. tuberosum hybridsMolecular Plant-Microbe Interactions 15(6):587-597.