Horticultural Sciences Department

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Dr. Steven A. Sargent


Office:1211 Fifield Hall
Phone:352-273-4780
E-mail:sasa@ufl.edu
 

Professor and Extension Postharvest Specialist

Areas of Research

  • Determine the impact of current and novel techniques and technologies on quality of fresh fruits and vegetables during harvest, handling and storage operations.
  • Current projects include: mechanical harvest, cooling, modified/controlled atmospheres, ethylene antagonists, such as 1-methylcyclopropene.

Educational Background

  • Ph.D., Agricultural Engineering, Michigan State University (1984)
  • M.S., Horticulture, Michigan State University (1979)
  • B.S., Horticulture, Michigan State University (1976)

Teaching Responsibilities

Annual Postharvest Horticulture Tour

Extension Program

  • Develop relevant extension materials based on results of my research program and new developments in the scientific literature and present to pertinent clientele groups.  
  • Provide statewide leadership in the Plant Sciences Working Group of UF/IFAS Extension Initiative 1. 

Work and International Experiences

  • Research Collaborations
    • Embrapa (Brazilian Agricultural Research Corporation): Embrapa Vegetables, Brasilia; Embrapa Instrumentation, São Carlos, Brazil
    • University of São Paulo, ESALQ campus, Piracicaba, Brazil
    • Federal University of Sergipe, Aracaju, Brazil
  • Extension Collaborations
    • Emater-Federal District of Brasilia and Rio Grande do Sul, Brazil.
  • Language Proficiency
    • Fluent in Portuguese and intermediate fluency in Spanish.

Honors and Awards

Researcher of the Year, 2010, Florida Fruit & Vegetable Association

Honorary Professor, 2010, Universidad del Santa, Food Technology Department, Chimbote, Peru

International Educator of the Year, 2010, Sr. Faculty Category, 2010, University of Florida International Center

The Presidential Gold Medal, 2002 and 2009, Florida State Horticulture Society

Jim App Award for Outstanding Design Team, 2002, University of Florida Cooperative Extension Service

Best Paper Award, Florida State Horticultural Society, 2000, 2003, 2004, 2006, 2007, and 2008 Meetings)

Extension Publication Award, Southern Region, American Society for Horticultural Science, 19992003, and 2004

ESCOP/ACOP Leadership Program. National Organization of State Universities and Land-Grant Colleges, 2001-2002 cohort

Ulysses P. Hedrick Award, 1999, American Pomological Society, 1st Place Paper, Montealegre, JC, Childers, NC, Sargent, SA, Barros, LM, Alves, RE, 1999, Cashew (Anarcardium occidentale, L.) nut and apple: a review of current production and handling recommendations, Fruit Varieties Journal 53(1):2-9

Faculty Development Leave, 1993 to1994, University of Florida, Sabbatical year at the National Center for Food Technology, EMBRAPA, Guaratiba, Brazil


Program Personnel

  • Adrian Berry, M.S., Biological Scientist iV
  • Catherine Belisle, PhD student (USA)
  • Carina Theodore, MS student (Haiti)

More Info

Thesis & Dissertations 

Related Links


Selected Publications

a) Books, Co-Authored

       Brecht, J.K., S.A. Sargent, A.A. Kader, E.J. Mitcham, F. Maul, P.E. Brecht and O. Menocal. 2014. Mango Postharvest Best Management Practices Manual (1st revision). Univ. of Fla. Horticultural Sciences Department, Gainesville. Publ. HS1185. 74 pp. http://edis.ifas.ufl.edu/hs1185

Brecht, J.K., S.A. Sargent, A.A. Kader, E.J. Mitcham, F. Maul, P.E. Brecht and O. Menocal. 2014. Manual de Prácticas para el Mejor Manejo Postcosecha del Mango (1st revisión). Publ. HS1190. 67 pp. http://edis.ifas.ufl.edu/hs1190 (Spanish translation)

Brecht, J.K., S.A. Sargent, A.A. Kader, E.J. Mitcham, F. Maul, P.E. Brecht and O. Menocal. 2011. Manual de Práticas para o Melhor Manejo Pós-Colheita da Manga. Publ. HS1194. http://edis.ifas.ufl.edu/pdffiles/HS/HS119400.pdf (Portuguese translation)

b) Books, Contributor of Chapters

Ferreira, M.D., P. C. Spricigo and S.A. Sargent. 2017. Ch. 3. (Harvest and Packing). Pp. 67-85. In, Ferreira, M.D. (ed.), (Postharvest Instrumentation for Fruits and Vegetables). Original title: Instrumentação Pós-Colheita em Frutas e Hortaliças. Embrapa, Brasilia DF, Brazil. 284 pp. https://www.embrapa.br/en/instrumentacao/busca-de-publicacoes/-/publicacao/1075734/instrumentacao-pos-colheita-em-frutas-e-hortalicas

Sargent, S.A. and Moretti, C.L. 2016. Tomato. In, Gross, K., C.Y. Wang and M. Saltveit (Eds.). The Commercial Storage of Fruits, Vegetables, and Florist & Nursery Stocks. Agriculture Handbook 66. U.S. Dept. Agric. Agr. Res. Serv. Washington, DC. pp. 581-587.

Sargent, S.A. 2016. Cassava. In, Gross, K., C.Y. Wang and M. Saltveit (Eds.). The Commercial Storage of Fruits, Vegetables, and Florist & Nursery Stocks. Agriculture Handbook 66. U.S. Dept. Agric. Agr. Res. Serv. Washington, DC.  pp. 260-270.

Mattos, L.M., Moretti, C.L., Jan, S., Sargent, S.A., Lima, C.E.P. and Fontenelle, M.R. 2014. Climate changes and potential impacts on postharvest quality of fruit and vegetable crops. Chapter 19. In, Ahmad, P. and Rasool, S. (eds.), Emerging Technologies and Management of Crop Stress Tolerance. Vol. 1. Biological Techniques. Elsevier B.V. pp. 467-486.

Sargent, S.A. and D.N. Maynard. 2012. Cucurbits. Chapter 14. In, Rees, D., G. Farrell and J. Orchard (Eds.), Crop Post-Harvest: Science and Technology. First Edition. Wiley-Blackwell. West Sussex, UK. pp. 286-316.

Warren, O. and S.A. Sargent. 2011. Carambola (Averrhoa carambola L.). Chapter 18. In, Yahia, E. (Ed.), Biology & Technology of Tropical and Sub-Tropical Fruits, Vol. 2. Woodhead Publishing Ltd., Cambridge, UK. pp. 397-413.

Berry, A.D. and S.A. Sargent. 2011. Cashew apple and nut (Anacardium occidentale). Chapter 19. In, Yahia, E. (Ed.), Biology & Technology of Tropical and Sub-Tropical Fruits, Vol. 2. Woodhead Publishing Ltd., Cambridge, UK. pp. 414-422.

c) Refereed Publications

Patrícia Maria Pinto, Poliana Cristina Spricigo, Simone Rodrigues da Silva, Steven Alonzo Sargent, Angelo Pedro Jacomino. Effect of 1-MCP and low temperature storage on postharvest conservation of camu-camu. Postharvest Biology & Technology. (submitted)

Makani, M.N., S.A. Sargent, L. Zotarelli, D.J. Huber and C.A. Sims. 2017. Harvest Interval Has Greater Effect on Periderm Maturity and Storage Quality of Early-maturing, Tablestock Potato than Nitrogen Rate. HortScience 52:1390-1395.

Hagan, L.L., Johnson, P. N. T., Sargent, S.A., Huber, D.J. and A. Berry A. 2017. 1-methylcyclopropene treatment and storage conditions delay the ripening of plantain fruit while maintaining sensory characteristics of ampesi, the boiled food product. International Food Research Journal 24(2):630-636.

Takeda, F., W.Q. Yang, C. Li, A. Freivalds, K. Sung, R. Xu, B. Hu, J. Williamson and S. Sargent. 2017. Applying New Technologies to Transform Blueberry Harvesting. Agronomy 7(2):33; doi:10.3390/agronomy7020033

Casamali, B., J.G. Williamson, A.P. Kovaleski, S.A. Sargent and R.L. Darnell. 2016. Mechanical Harvesting and Postharvest Storage of Two Southern Highbush Blueberry Cultivars Grafted onto Vaccinium arboreum Rootstocks. HortScience 51:1503-1510. DOI:  10.21273/HORTSCI11323-16

Perez Cayo, Y., S.A. Sargent, C. do Nascimento Nunes and V. Whitaker. 2016. Composition of commercial strawberry cultivars and advanced selections as affected by season, harvest and postharvest storage. HortScience 51(9):1134-1143. DOI:10.21273/HORTSCI10996-16

Reyes-Cabrera, J., L. Zotarelli, M.D. Dukes, D.L. Rowland, S.A. Sargent. 2016. Soil moisture distribution under drip irrigation and seepage for potato production. Agricultural Water Management 169:183-192. DOI: 10.1016/j.agwat.2016.03.001

Makani, M.N., S.A. Sargent, L. Zotarelli, D.J. Huber and C.A. Sims. 2015.  Irrigation method and harvest time affect storage quality of two early-season, tablestock potato (Solanum tuberosum L.) cultivars. Scientia Horticulturae 197C:428-433.

Lee, J.S., B.M. Hurr, D.J. Huber, C.E. Vallejos and S.A. Sargent. 2015. Characterization of proteases and nucleases associated with ethylene-induced programmed cell death in immature cucumber fruit. Postharvest Biology and Technology 110:190-196.

Vilarinho, L.B.O., D.J. H. da Silva, A. Greene, K.D. Salazar, C. Alves, M. Eveleth, B. Nichols, S. Tehseen, J.K. Khoury, Jr., S.A. Sargent and B. Rathinasabapathi. 2015. Inheritance of fruit traits in Capsicum annuum: heirloom cultivars as sources of quality parameters relating to pericarp shape, color, thickness, and total soluble solids. J. Amer. Soc. Hort. Sci. 140(6):597-604.

Pereira, M.E.C., S.A. Sargent and D.J. Huber. 2015. Delayed and prolonged ethylene treatment alleviates firmness asynchrony enhanced by 1-methylcyclopropene exposure in Guatemalan-West Indian avocado. Postharvest Biology and Technology 108:54-60.

Berry, A.D., S.A. Sargent, M.E.C. Pereira and D.J. Huber. 2015. Postharvest Ripening and Quality of Guatemalan-West Indian Avocado Hybrids under Simulated Commercial Shipping Temperatures Following Treatment with Aqueous 1-Methylcyclopropene. HortTechnology 25(1):85-89.

Tokarskyy, O., K.R. Schneider, A. Berry, S.A. Sargent and A. Sreedharan. 2015. Sanitizer applicability in a laboratory model strawberry hydrocooling system. Postharvest Biology & Technology 101:103-106.

Sreedharan, A., O. Tokarskyy, S. Sargent and K.R. Schneider. 2015. Survival of Salmonella spp. on surface-inoculated forced-air cooled and hydrocooled intact strawberries, and in strawberry puree. Food Control 51:244-250.

Carson, L., M. Ozores-Hampton, K. Morgan, and S. Sargent. 2014. Effects of controlled-release fertilizer nitrogen rate, placement, source, and release duration on tomato grown with seepage irrigation. HortScience 49:798-806.

Carson, L., M. Ozores-Hampton, K. Morgan, and S. Sargent. 2014. Effect of controlled-release and soluble fertilizer on tomato production and postharvest quality in seepage irrigation. HortScience 49:89-95.

Pereira, M.E.C., S.A. Sargent, C.A. Sims, D.J. Huber, J.H. Crane and J.K. Brecht. 2014. Ripening and sensory analysis of Guatemalan-West Indian hybrid avocado following ethylene pretreatment and/or exposure to gaseous or aqueous 1-methylcyclopropene. Postharvest Biology and Technology 92:121-127.

Reyes-Cabrera, J., L. Zotarelli, D.L. Rowland, M.D. Dukes and S.A. Sargent. 2014. Drip as alternative irrigation method for potato in Florida sandy soils. American Journal of Potato Research 91:504–516.

Pereira, M.E.C., D.M. Tieman, S.A. Sargent, H.J. Klee and D.J. Huber. 2013. Volatile profiles of ripening West Indian and Guatemalan-West Indian avocado cultivars as affected by aqueous 1-methylcyclopropene. Postharvest Biology and Technology 80:37-46.

Hurr, B.M., D.J. Huber, C.E. Vallejos, E. Lee, S.A. Sargent. 2013. Ethylene-induced overproduction of reactive oxygen species is responsible for the development of watersoaking in immature cucumber fruit. Journal of Plant Physiology 170:56-62.

Sugri, I., S.A. Sargent, F. Kusi, A.D. Berry, R.A.L. Kanton and W. Pelletier. 2013. Improving Marketable Quality of Tomato: a Simulation of Shipping Conditions in Ghana. American Journal of Experimental Agriculture 3(2):392-402.

Pereira, M.E.C., S.A. Sargent, C.A. Sims, D.J. Huber, C.L. Moretti and J.H. Crane. 2013. Aqueous 1-MCP Extends Longevity and Does Not Affect Sensory Acceptability of Guatemalan-West Indian Hybrid Avocado. HortTechnology 23(4):468-473.

Sargent, S.A., A.D. Berry, J.G. Williamson and J.W. Olmstead. 2013. Postharvest Quality of Mechanically and Hand-harvested, Southern Highbush Blueberry Fruit for Fresh Market. HortTechnology 23(4):437-441.

Schiavone, D.F., A.A. Teixeira, R.A. Bucklin and S.A. Sargent. 2013. Design and performance evaluation of a solar convection dryer for drying tropical fruit. Applied Engineering in Agriculture 29(3):391-401.

       Ozores-Hampton, M., E. Simonne, F. Roka, K. Morgan, S. Sargent, C. Snodgrass, and E.

McAvoy. 2012. Nitrogen rates effects on the yield, nutritional status, fruit quality and profitability of tomato grown in the spring with subsurface irrigation. HortScience 47:1129-1135.

Demir, N., A.C.O. Ferraz, S.A. Sargent and M.O. Balaban. 2011. Classification of impacted blueberries during storage using an electronic nose. J. Science of Food & Agriculture 91:1722-1727.

Moretti, C.L., L.M. Mattos, A.G. Calbo and S.A. Sargent. 2010. Climate changes and potential impacts on postharvest quality of fruit and vegetable crops: A review. Food Research International 43:1824-1832.

d) Non-refereed Papers

Conference Proceedings Papers

Sargent, S.A., A.D. Berry, J.K. Brecht, M. Santana, S. Zhang, N. Ristow.. 2017. Studies on Quality of Southern Highbush Blueberry Cultivars: Effects of Pulp Temperature, Impact and Hydrocooling. XI Intl. Vaccinium Symposium. April 10-14, 2016. Orlando, FL. ACTA Horticulturae 1180:497-502. DOI 10.17660/ActaHortic.2017.1180.70

Sargent, S.A. 2016. (Qualidade de pequenas frutas – tendências e oportunidades). Quality of Small Fruits – Trends and Opportunities. VII Meeting of Small Fruits and Native Fruits in MercoSul countries. Embrapa Clima Temperado. Pelotas, RS, Brazil. 12 pp.

Majubwa, R.O., J.X. Chaparro, S.A. Sargent, D.J. Huber , M.A. Ritenour, C.A. Sims and T.J. Msogoya. 2016. Sensory and Physiochemical Fruit Quality of Three Seedless Mandarin (Citrus reticulata Blanco) Cultivars Grown on Three Rootstocks. Proc. Florida State Horticulture Society 129: (in press)

Razali, N.A. A.C. N. Antunes, AD. Berry and S.A. Sargent. 2016. Postharvest Storage Temperature and Coating Effects on Fruit Quality of Red-fleshed Pitaya (Hylocereus costarricenses). Proc. Florida State Horticulture Society 129: (in press)

Cui, Y., G, Liu, L. Zotarelli and S.A. Sargent. 2016. Optimization Of Phosphorus Rates For Potato (Solanum Tuberosum L.) Production In NE Florida: A One-Year On-Farm Case Study. Proc. Florida State Horticulture Society 129: (in press)

LonKan, E.E., S.A. Sargent, D.J. Cantliffe, A.D. Berry and N.L. Shaw. 2016. Harvest Maturity and Storage Temperature Affect Postharvest Quality of Greenhouse-Grown Datil Hot Pepper. Proc. Florida State Horticulture Society 129: (in press)

E.D. Pliakoni, D.J. Huber, S.A. Sargent, and J.K. Brecht. 2016. Using chlorophyll fluorescence as an indicator of brown stain (CO2 injury) in Romaine lettuce. Acta Hortic 1120:151-156.

E.D. Pliakoni, D.J. Huber, S.A. Sargent, and J.K. Brecht. 2015. Physical and biochemical changes in broccoli that may assist in decision-making related to international marine transport in air or CA/MA. Acta Hortic 1071: 951-957.

Santana, M.T.A., S.A. Sargent and A. D. Berry (2015). Effect of Pulp Temperature and Drop Height on Blueberry Quality. Proc. Florida State Horticulture Society 128: (in press)

Bartz, J.A., Sargent, S.A. and Scott , J.W. 2015. Weather fronts and postharvest decays and safety of field-grown tomatoes. Acta Hort. (ISHS) 1069:333-340

Liu, D., M. Doron, S. Sargent, D. Dinkins and D. Johns. 2015. Optimizing Nitrogen Rates with Surfactant for Chipping Potato Production in Florida. Proc. Florida State Horticulture Society128: (in press)

Schiavone, D.F., A.D. Berry and S.A. Sargent. 2014. Development of an Integrated System to Rinse, Sanitize and Cool Fresh-Market Strawberries. Proc. Florida State Horticulture Society 127:139-141.

Liu, G., S. Sargent, B. Hogue, D. Dinkins, S. Lands and D. Johns. 2014. Optimizing Gypsum Rate for Commercial Potato Production in NE Florida. Proc. Florida State Horticulture Society 127:92-93.

Carnelossi, M.A.G., S.A. Sargent and A.D. Berry. 2013. Influence of clamshell position and size on strawberry fruit cooling rate using forced-air cooling. Proc. Florida State Horticulture Society 126:196-199.

Makani, M. S.A. Sargent, L. Zotarelli, D.J. Huber, C.A. Sims, and J. Reyes-Cabrera. 2013. Postharvest quality of table stock potatoes in response to drip irrigation and harvest time. Proc. Florida State Horticulture Society 126:184-186.

Hyppolite, L., F.M. Roka, S.A. Sargent and A.A. Teixeira. 2013. Characterization of the Haitian Mango Industry. Proc. Florida State Horticulture Society 126:21-29.

Ozores-Hampton, M., E. Simonne, F. Roka, S. Sargent, C. Snodgrass, and E. McAvoy. 2012. Best management practices for tomato fertilization. 2012 Proc. 57th Atlantic Coast Ag. Convention & Trade Show 92-94. http://njveg.rutgers.edu/assets/pdfs/2012-AC-Proceedings.pdf

Bonicet, A.J., S.A. Sargent and A. Teixeira. 2012.  Adoption of Plastic Field Crates to Reduce Mechanical Injuries in Postharvest Handling of Haitian Mango. Proceedings Florida State Horticulture Society 125:260-263.

Nunes, M.C.N.,  A.M.M.B. Morais, J.K. Brecht, S.A. Sargent, J.A. Bartz, R.A. Allen, J.H. Lee, D.M. Pires and J. Pittet-Moore. 2012. Occurrence of gray mold in stored strawberry fruit as affected by ripeness, temperature, and atmosphere. Proceedings Florida State Horticulture Society 125:287-294.

Huang, P.W., B.M. Santos, V.M. Whitaker, C.D. Stanley, and S.A. Sargent. 2012. Performance of Florida-produced containerized strawberry transplants. Proceedings Florida State Horticulture Society 125:147-149.

Jacomino, A.P., S.A. Sargent, A.D. Berry, and J.K. Brecht. 2011. Potential for Grading, Sanitizing, and Hydrocooling Fresh Strawberries. Proc. Florida State Hort. Soc. 124:221-226.

Makani, M.N., S.A. Sargent, D.J. Huber, and J.A. Bartz. 2011. Characterization and Management of Lenticel Disorders during Storage of Table Stock Potatoes (Solanum tuberosum L.). Proc. Florida State Hort. Soc. 124:194-196.

Brecht, J.K. and S.A. Sargent. 2011. Bell Pepper Bruising Increases with Lower Temperature and Higher Turgidity. Proc. Florida State Hort. Soc. 124:256-259.

Ozores-Hampton, M., G. McAvoy, S. Sargent, and P. Roberts. 2011. Evaluation of tomato yellow leaf curl virus (TYLCV) and fusarium crown rot (FCR) resistant tomato variety in commercial conditions in Southwest Florida. Tomato Res. Rpt. 2010-11. (13 pp.).

Santos, B.M., T.P. Salamé-Donoso, C.K. Chandler and S.A. Sargent. 2010. Protected Culture for Vegetable and Small Fruit Crops: High Tunnels for Strawberry Production in Florida. EDIS Publ. HS1162. University of Florida/IFAS, Gainesville. 8 pp.

Sargent, S.A. and J.K. Brecht. 2010. Pushing perishability. Florida Grower. Vol. 103(12):16-17. December. http://www.growingproduce.com/floridagrower/?storyid=4684

Olmstead, J.W., J.G. Williamson, S.A. Sargent, A.D. Berry and K.M. Blaker. 2010. Blueberry Variety Selections for Mechanical Harvesting and Fresh Pack. Progress report to Florida Blueberry Growers Association. October. 13 pp.

Berry, A.D. and S.A. Sargent. 2010. Effect of postharvest application of 1-MCP on basil shoot quality during storage at chilling temperature. Annual meeting Florida State Horticulture Society. Paper HP20.

Ozores-Hampton M., E.J. McAvoy, S. Sargent and P. Roberts. 2010. Evaluation of tomato yellow leaf curl virus (TYLCV) and fusarium crown rot (FCR) resistant tomato variety in commercial conditions in Southwest Florida. Fla. Tomato Inst. Proc. PRO 527:11-15.http://www.imok.ufl.edu/docs/pdf/veg-hort/tomato institute/proceedings/ti10_proceedings.pdf

Sargent, S.A., A.D. Berry, M.E.C. Pereira and D.J. Huber. 2010. Potential of 1-methylcyclopropene to delay ripening and extend quality of avocado fruit during refrigerated storage. Annual meeting Florida State Horticulture Society.  Paper HP21.

Cantliffe, D.J., N.L. Shaw, Q.N. Vinh, S.A. Sargent, A. Berry and X. Zhao. 2010. Rootstocks Improve Fruit Yield and Quality of Greenhouse-produced Determinate and Indeterminate Tomato Cultivars. Annual meeting Florida State Horticulture Society.  Paper V4. Berry, A.D.,

Sargent, S.A. and D.J. Huber. 2010. Effect Of Postharvest Application Of 1-MCP On Basil Shoot Quality During Storage At Chilling Temperature. Proc. FSHS. In Press.

Ozores-Hampton, M., G. McAvoy, S. Sargent, and P. Roberts. 2010. Evaluation of tomato yellow leaf curl virus (TYLCV) and fusarium crown rot (FCR) resistant tomato variety in commercial conditions in Southwest Florida. Tomato Res. Rpt. 2009-10. (9 pp.).