Juan Fernan Sierra Hayer has extensive experience in agronomy and plant pathology, having received master's and PhD degrees focusing on plant protection. He has worked for various companies and universities in Brazil, Colombia, Mexico, and the United States, conducting research and advising on rubber tree cultivation, disease management, and rubber processing. Currently he focuses on giving lectures and advising private companies, universities, and producers on rubber production.

1. CURRICULUM VITAE
JUAN FERNAN SIERRA HAYER
Botucatu, SP - Brazil
(+55) 14 98204 0531
sierrah.juan@gmail.com
Attended Politécnico Colombiano Jaime Isaza Cadavid where I graduated with an Agronomic Engineering
Degree in Colombia. I also received a M.S degree and a Ph.D in Agronomy with a focus in Plant
Protection from the Universidade Estadual Paulista “Júlio de Mesquita Filho” in Brazil. Between
2008 through 2013, I gained professional experience with two major companies in Brazil that specialize in
rubber tree, Hevea-Tec and Cautex. Experienced in Agronomy with emphasis on plant pathology mainly
in: pathogenic fungi, trunk diseases, foliar diseases and molecular techniques applied to plants. Directed
various techniques in the productive and unproductive stages of rubber tree at an international level. Stages
and techniques include; implementation, establishment, quality control, processing, and trading of HA
latex, TSR 10, TSR 20, and RSS 3. Currently I’m my focus has been on conducting speeches and lectures,
serve as an advisor to consult private companies, universities, institutes and producers of all sizes in
partnership with researchers from Colombia, Mexico, Argentina, Guatemala, Brazil and the US.
ACADEMIC BACKGROUND
Title: General English
Conclusion: 2015
Institution: International House Boston
City: Boston, MA – USA
Title: General English
Conclusion: 2015
Institution: ABLE
City: Wooster, OH – USA
Title: Ph.D in Agronomy – Plant Protection
Conclusion: 2014
Institution: Universidade Estadual Paulista "Júlio de Mesquita Filho" Botucatu
City: Botucatu, SP – Brazil

2. CURRICULUM VITAE
Title: M.S Degree in Agronomy – Plant Protection
Conclusion: 2010
Institution: Universidade Estadual Paulista "Júlio de Mesquita Filho" Botucatu
City: Botucatu, SP – Brazil
Title: Agronomic Engineer
Conclusion: 2006
Institution: Politécnico Colombiano Jaime Isaza Cadavid
City: Medellin, Antioquia – Colombia
ANOTHER STUDIES
Training in methods of planting and transplanting the natural rubber alternative plants,
Buckeye Gold and guayule, in the greenhouse and field. Natural rubber production,
processing, compounding and making compression-molded samples from these
alternatives. Conducted research on the composition of Buckeye Gold roots, by
performing biochemical compositional analyses. Lab techniques to extract and quantify
water soluble components, like inulin, acetone soluble components, collectively called
“resin”, and hexane soluble components, the rubber, quantified monosacharides, proteins,
lignin, and ash levels in roots. Ohio Agricultural Research and Development Center.
Wooster, Ohio – United State – 2015.
Specialization in Rubber trees, Hevea – Tec. Brazil 2008 – 2013.
Short duration course: “Introduction of Tools for the Study of Epidemiology”.
Universidade Estadual Paulista "Júlio de Mesquita Filho" - Brazil, 2013.
University Extension in: “SciVerse Sci Database Training”. Universidade Estadual
Paulista "Júlio de Mesquita Filho" - Brazil, 2011.
Short duration course: “Advanced Genetics”. Universidade Estadual Paulista "Júlio de
Mesquita Filho" - Brazil, 2011.
Short duration course: “Plant Biology Development - Phytohormonal Mechanism”.
Universidade Estadual Paulista "Julio de Mesquita Filho" - Brazil, 2011.
Short duration course: “From resources caption to quality indicators”. Universidade
Estadual Paulista "Julio de Mesquita Filho" - Brazil, 2011.
Short duration course: “Molecular Cytogenetic diagnostic updating”. Universidade
Estadual Paulista "Julio de Mesquita Filho" - Brazil, 2011.

3. CURRICULUM VITAE
Short duration course: “Risk Prevention and Forecast of Plant Diseases”. 44° Congresso
Brasileiro de Fitopatologia, CBFITO - Brazil, 2011.
Course of short duration in: “Absorption and Transport of Nutrients in Plant”.
Universidade Estadual Paulista "Julio de Mesquita Filho" Brazil, 2011.
Short duration course: “Genome Organization and Evolution”. Universidade Estadual
Paulista "Julio de Mesquita Filho" - Brazil, 2010.
Short duration course: “Rubber tree Course Innovations and Market Perspectives”.
Fundação de Apoio a Pesquisa Ensino e Extensão, FUNEP, Jaboticabal, Brazil, 2010.
Short duration course: “Training rubber bleeders”. Treinamento de Sangradores Fazenda
Santa Filomena, TSFSFILOMENA - Brazil, 2010.
Short duration course: “Basis for International Scientific Writing”. Universidade Estadual
Paulista "Julio de Mesquita Filho" - Brazil, 2010.
Short duration course: “Practical Applications of Plant Molecular Biology”. Universidade
Estadual Paulista "Julio de Mesquita Filho" - Brazil, 2010.
Short duration course: “Parasites Genetic Elements: Inteins and Introns Group I,
evolutionary and biotechnological aspects”. Universidade Estadual Paulista "Julio de
Mesquita Filho" - Brazil, 2010.
Short duration course: “Special Topics in Molecular Genetics Evolution”. Universidade
Estadual Paulista "Julio de Mesquita Filho" - Brazil, 2010.
Short duration course: “Theoretical and Practical Course of PCR, RT-PCR and PCR in
Real-Time”. Universidade Estadual Paulista "Julio de Mesquita Filho" - Brazil, 2009.
Short duration course: “Phytopathogens Diagnose and Theraphy”. XLII Congresso
Brasileiro de Fitopatologia, FITO 2009 - Brazil, 2009.
Short duration course: “HPLC course”. Universidad Nacional de Colombia - Colombia,
2007.
Course of short duration in: “Quality Control and Seeds”. Instituto Colombiano
Agropecuário, ICA, Colombia, 2007.
Short duration course: “Training of Molecular Biology Basic Techniques”. Universidad
Nacional de Colombia - Colombia, 2007.
Course in: “Rubber tree”. Corpoica – Palmira - Colombia, 2006 – 2007.
Short duration course: “Rubber tree and Agroforestry”. Corpoica - Colombia, 2007.

4. CURRICULUM VITAE
Short duration course: “Micrografting in Citrus”. Colombia, 2006.
Short duration course: “Internet”. Centro de Formación Tecnica Cedecomputo -
Colombia, 2002.
PROFESSIONAL EXPERIENCE
Company: Ohio State University
City: Wooster – Ohio – United States
Time of contract: 2015
Role: Training in methods of planting and transplanting the natural rubber alternative
plants, Buckeye Gold and guayule, in the greenhouse and field. He also assisted in
natural rubber production, processing, compounding and making compression-molded
samples from these alternatives. Also conducted research on the composition of Buckeye
Gold roots, by performing biochemical compositional analyses. He mastered lab
techniques to extract and quantify water soluble components, like inulin, acetone soluble
components, collectively called “resin”, and hexane soluble components, the rubber. In
addition quantified monosacharides, proteins, lignin, and ash levels in roots.
Company: Universidade Estadual Paulista "Julio de Mesquita Filho" Campus de
Botucatu, UNESP.
City: Botucatu – SP – Brazil
Time of contract: 2008 – 2014
Role: Employee; teaching internship; researcher and student of master and doctorate
degree.
Company: EGLAR S.A
City: Puerto López – Meta – Colombia
Time of contract: 2010 - 2014
Role: Adviser and technical consultant; plantation manager; commercial adviser of
purchase and sale of rubber; implantation and management of rubber trees; hatchery
(Seedling production); rubber tree disease management; rubber and latex processing;
courses; training; lectures; RSS 3 rubber quality; financial analysis of rubber tree; natural
rubber trading; transfer and generator technology.

5. CURRICULUM VITAE
Company: Materias Primas del Sur de Veracruz (MAPRISUR)
City: Las Choapas – Veracruz – México
Time of contract: 2012 - 2014
Role: Adviser and technical consultant; plantation manager; commercial adviser of
purchase and sale of rubber; implantation and management of rubber trees; hatchery
(Seedling production); rubber tree disease management; rubber and latex processing;
courses; training; lectures; Latex HA and RSS 3 rubber quality; financial analysis of
rubber tree; natural rubber trading; transfer and generator technology.
Company: Mineros S.A
City: El Bagre – Antioquia – Colombia
Time of contract: 2014 - 2015
Role: Adviser and technical consultant, plantation manager, commercial adviser of
purchase and sale of rubber, implantation and management of rubber trees, hatchery
(Seedling production), rubber tree disease management, rubber and latex processing,
courses, training, lectures; transfer and generator technology.
Company: SOCCA SAS (Sociedad Colombo Argentina de Caucho)
City: Barrancabermeja – Santander – Colombia
Time of contract: 2011 - 2013
Rule: Partner, adviser and technical consultant; plantation manager; commercial adviser
of purchase and sale of rubber; implantation and management of rubber trees, researcher,
hatchery (Seedling production), rubber tree disease management, courses; training;
lectures; financial analysis of rubber tree; natural rubber trading; transfer and generator
technology.
Company: HEVEA – TEC (Indústria e Comércio Ltda)
City: Jaci – São José de Rio Preto – São Paulo - Brazil
Time of contract: 2008 - 2013
Role: Intern, researcher and technician in the following activities: Rubber tree planting,
rubber tree production, hatchery, rubber processing, and laboratory – rubber
physicochemical analysis.
Company: International Language Center – ILC
City: Botucatu – São Paulo – Brazil
Time of contract: 2009 - 2009
Role: Spanish teacher.

6. CURRICULUM VITAE
Company: Corporación Colombiana de Investigación Agropecuaria – CORPOICA
City: Palmira – Valle del Cauca – Colombia
Time of contract: 2006 - 2007
Role: Intern, technician, researcher in Citrus and Rubber tree.
PROFESSIONAL EXPERIENCE
2009 – Present: Summa Phytopathologica Journal Reviser.
2009 – Present: Summa Phytopathologica Journal editorial board Reviser.
2009 - 2012: Council Representative Member of the Graduate in Agronomy - Plant
Protection), UNESP – Botucatu - SP, Brazil.
Lecturer: “Management of rubber tree (Hevea brasiliensis) plantations in South
America”. Seminar. The Ohio State University – Wooster – Ohio – United State, 2015.
Lecturer: “Disease management, industrialization, Market and Management of rubber
tree cultivation (Hevea brasiliensis)"; Seminar: "Growing Hevea brasiliensis". Caucasia
– Colombia, 2014.
Lecturer: "Disease Management and cultivation of rubber tree (Hevea brasiliensis)".
Politécnico Colombiano Jaime Isaza Cadavid – Rionegro – Colombia, 2014.
Lecturer: “Disease management, industrialization, market and management of rubber
tree cultivation (Hevea brasiliensis)". Theoretical and practical course. Las Choapas,
Veracruz – Mexico, 2014.
Lecturer: "Cultivation of rubber tree in Brazil and Latin America". 4° Encontro de
Agronomia, Faculdades Integradas de Bauru – Bauru - Brazil, 2013.
Lecturer: "Bole and aerial parts diseases of rubber tree". XVII Congreso Internacional
de la Cámara Regional de la Industria del Hule y Látex del Estado de Jalisco - Puerto
Vallarta - Mexico, 2013.
Lecturer: " Rubber tree establishment". XVII Congreso Internacional de la Cámara
Regional de la Industria del Hule y Látex del Estado de Jalisco, Cámara Regional de la
Industria del Hule y Látex del Estado de Jalisco – Puerto Vallarta – Mexico, 2013.
Lecturer: “Rubber tree management “. XII Jornadas Latinoamericanas y Encuentros
Sectoriales de la Industria del Caucho, SLTC - Buenos Aires - Argentina, 2013.
Lecturer: "Rubber tree diseases and management in Brazil". The International Natural
Rubber Investment Forum, Grupo Agroindustrial Occidente - Guatemala, 2013.

7. CURRICULUM VITAE
Lecturer: “Disease management, industrialization, market and management of rubber
tree cultivation (Hevea brasiliensis)". Theoretical and practical course. Las Choapas,
Veracruz – Mexico, 2013.
Lecturer: “Rubber tree Diseases". XVI Congreso Internacional de la Cámara Regional
de la Industria del Hule y Látex del Estado de Jalisco, Cámara Regional de la Industria
del Hule y Látex del Estado de Jalisco - Puerto Vallarta - Mexico, 2012.
Lecturer: "Heveiculture: Management and Rubber tree Production”. XV Simpósio de
Ciências Aplicadas da FAEF, FAEF Garça – SP – Brazil, 2012.
Lecturer: "Rubber tree quality". Seminario de Caucho Natural; XI Jornadas
Latinoamericanas y IX Iberoamericanas de Tecnología del Caucho, Sociedad
Latinoamericana de Tecnología del Caucho – Contexto - Medellin - Colombia, 2011.
Lecturer: "Rubber tree quality". Seminario de Proceso de Mezclado; XI Jornadas
Latinoamericanas y IX Iberoamericanas de Tecnología del Caucho, Sociedad
Latinoamericana de Tecnología del Caucho – Contexto - Medellin - Colombia, 2011.
Lecturer: "Rubber tree quality". Ciclo de conferências del Caucho, Institución Educativa
Jorge Eliecer Gaitán, Puerto Gaitan, Meta – Colombia, 2011.
Lecturer: "Disease and Rubber tree management". Seminario de Caucho Natural; XI
Jornadas Latinoamericanas y IX Iberoamericanas de Tecnología del Caucho, Sociedad
Latinoamericana de Tecnología del Caucho – Contexto - Medellin - Colombia, 2011.
Lecturer: "Disease and Rubber tree management". Seminario de Proceso de Mezclado;
XI Jornadas Latinoamericanas y IX Iberoamericanas de Tecnología del Caucho, Sociedad
Latinoamericana de Tecnología del Caucho – Contexto - Medellin - Colombia, 2011.
Lecturer: "Colletotrichum acutatum: a new pathogen of rubber tree in Brazil". III
Congresso Brasileiro de Heveicultura - Bahia – Brazil, 2010.
Lecturer: "Nine fungicides effect on Colletotrichum gloeosporioides and control of
Colletotrichum acutatum isolated from the rubber tree". III Congresso Brasileiro de
Heveicultura – Bahia – Brazil, 2010.
Lecturer: "Pathogenic Fungi pathogenic". III Congresso de Iniciação Científica Eduvale
(III CONINCE), Faculdade de Eduvale - São Paulo – Brazil, 2010.
Lecturer: “Speed Growth of Six Isolated of Colletotrichum spp. Submitted to six
temperaturas”. 43 Congresso Brasileiro de Fitopatologia, Cuiabá, Mato Grosso – Brazil,
2010.

8. CURRICULUM VITAE
Lecturer: "Equipment, Conduction and Management of Rubber tree". Disciplina de
Heveicultura do Curso de Engenharia Florestal, Universidade Estadual Paulista 'Julio de
Mesquita Filho' Campus de Botucatu, São Paulo – Brazil, 2009.
Lecturer: “Rubber Quality of rubber tree". Disciplina de Heveicultura do Curso de
Engenharia Florestal, Universidade Estadual Paulista 'Julio de Mesquita Filho' Campus
de Botucatu, São Paulo – Brasil, 2009.
Lecturer: "Proposal for the molecular characterization of rubber tree garden composed
species: Hevea benthamiana, H.brasiliensis, H. pauciflora, H. nítida, and H. guianensis
C.I Corpoica - Palmira, using RAMs". X Congreso Asociación Colombiana de
Fitomejoramiento y Producción de Cultivos, San Juan de Pasto, Nariño - Colombia,
2007.
LANGUAGES
Spanish: Native
Portuguese: Fluent
English: Intermediate
PROFESSIONAL REFERENCES
Name: Edson Luiz Furtado
Company: UNESP – FEPAF
Occupation: Ph.D. Teacher - Director (FEPAF)
City: Botucatu – São Paulo – Brazil
Phone number: (55) 14 3882 - 6300 Cel: (55) 14 98124 – 4411
Name: Katrina Cornish
Company: The Ohio State University.
Occupation: Endowed Chair and Ohio Research Scholar, Bioemergent Materials.
City: Wooster, Ohio, United State
E-mail: cornish.19@osu.edu; katrinacornish@energyene.com

9. CURRICULUM VITAE
Name: Viviane de Lima Rosa Brianez
Company: ADAMA BRASIL
Occupation: Cost Analyst
City: Londrina – Paraná – Brazil
Phone number: (55) 43 3371 - 9000 Cel: (55) 43 9607 - 0003
Name: Rafael Cayuela
Company: The Dow Chemical Company, STYRON LLC
Occupation: Director
City: Zürich Area, Switzerland
E-mail: rcayuela@dow.com
Name: Luis Antonio Silveira
Company: HEVEA – TEC
Occupation: Director
City: Jaci – São José de Rio Preto – São Paulo – Brazil
Phone number: (55) 14 3283 - 9000 Cel: (55) 17 98123 - 0247
Name: Maria Elena Enriquez Palacios
Company: Inversiones Lumali S.A
Occupation: Director
City: Bogotá – Cundinamarca – Colombia
Phone number: (57) 213 - 8240 Cel: (57) 315 3171397
Name: Frank Henry Sierra Hayer
Company: CI International Golden Business
Occupation: Businessman
City: Medellin - Antioquia – Colombia
Phone number: (57) 448 - 5130 Cel: (57) 315 474526
Juan Fernan Sierra Hayer
Agronomy, MS and Ph.D.
sierrah.juan@gmail.com
(+55) 14 98204 0531