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Dr. Patricia R. Knight

Dr. Patricia R. Knight

Title

  • Res Prof & Dir, Cstl Hort Res

Contact Information

prk3@msstate.edu
Office: 601-403-8941

Overview

Education

  • Virginia Polytechnic Institute and State University, Doctor of Philosophy (PHD), Horticulture
  • Auburn University, Master of Science (MS), Horticulture
  • Auburn University, Bachelor of Science (BS), Horticulture

Research/Extension Interests

Dr. Knight's research interests currently include Lagerstroemia breeding, field and container ornamental weed control techniques, and plant propagation.

Publications

Year Publications
2025

Xing, Z., Bi, G., Li, T., Zhang, Q., Knight, P. R. 2025. Long-term rainfall–runoff simulations during fallow seasons in a humid region. Climate

2025

Ray, J. T., Blythe, E. K., Bi, G., Knight, P. R., Reynolds, D. B., Bachman, G. R. 2025. Potential for phytotoxicity using alcohol-containing solutions of auxin in cutting propagation. HortTechnology 35(5):648-662.

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2025

DelPrince, J. M., Posadas, B. C., Ryals, J. L., Coker, C. E., Knight, P. R., Langlois, S. A. 2025. Consumer Preferences for Garland Designs. MAFES Research Bulletin 1253

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2025

Bowden, A., Knight, P. R., Ryals, J. L., Coker, C. E., Langlois, S., Broderick, S. R., Blythe, E. K., Sakhanokho, H. 2025. Evaluation of honey as a rooting adjuvant for cutting propagation of three common nursery crops. Agriculture 15(3).

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2024

Xing, Z., Bi, G., Li, T., Zhang, Q., Knight, P. R. 2024. Effect of Harvest Time on Growth and Bioactive Compounds in Salvia miltiorrhiza. Plants 13(13):1788.

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2024

Xing, Z., Bi, G., Li, T., Zhang, Q., Knight, P. R. 2024. Effect of Plant Density on Growth and Bioactive Compounds in Salvia miltiorrhiza. Agronomy 14(6):1157.

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2024

Xing, Z., Bi, G., Li, T., Zhang, Q., Knight, P. R. 2024. Effect of Plant Density on Growth and Bioactive Compounds in Salvia miltiorrhiza. Agronomy 14(6):1157.

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2023

Ryals, J. L., Bowden, A. T., Knight, P. R., Langlois, S. A., Coker, C. E., Drackett, P. R. 2023. Effect of Auxin Rate, Basal Wounding, Auxin Application Method, and Substrate on Propagation of Sweetbay magnolia (Magnolia virginiana L.). . Native Plants Journal 24(3):225-232.

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2023

Ryals, J. L., Knight, P. R., Williams, H. N., Langlois, S. A., Coker, C. E., DelPrince, J. M., Bowden, A. T., Drackett, P. R. 2023. Rooting response of Piedmont azalea (Rhododendron canescens) to auxin basal quick dip on single node cuttings. The Azalean-Journal of the Azalea Society of America 45:42-46.

2023

Posadas, B. C., Coker, C. E., McLeod, C., Knight, P. R., DelPrince, J. M., Langlois, S. A., Ryals, J. L. 2023. Online Survey of Consumer Preferences for Poinsettia Cultivars. Horticulturae 9(4):449.

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2023

Xing, Z., Bi, G., Li, T., Zhang, Q., Knight, P. R. 2023. Plant Growth and the Contents of Major Bioactive Compounds of Salvia miltiorrhiza Bunge Grown in Mississippi, United States. Horticulturae 9(3):310.

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2023

Xing, Z., Bi, G., Li, T., Zhang, Q., Knight, P. R. 2023. Nitrogen fertilization improves growth and bioactive compound content for Salvia miltiorrhiza Bunge. Horticulturae 9(2):254.

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2022

Bowden, A., Knight, P. R., Ryals, J. L., Coker, C. E., Langlois, S., Broderick, S. R., Babiker, E., Sakhanoku, H. 2022. Evaluation of one-time applications of foliar applied auxin co-applied with surfactant for use in commercial cutting propagation. Agronomy 12(9):2243.

2021

Coker, C. E., Knight, P. R., Posadas, B. C., Ely, R. M. 2021. Consumer acceptance and preference for winter rose poinsettia (Euphorbia pulcherrima L.) used as cut flowers. Journal of Horticulture and Landscaping 7.

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2021

Posadas, B. C., Knight, P. R., Stafne, E. T., Coker, C. E., Bachman, G. R., DelPrince, J. M., Langlois, S. A., Blythe, E. K. 2021. Economic Impacts of Horticulture Research and Extension at MSU Coastal Research and Extension Center. Horticulturae 7(8):236.

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2020

Ryals, J. B., Knight, P. R., Stafne, E. T. 2020. Rooting Response of Seven Passion Fruit Species to Basal Application of Auxin. HortTechnology 30(6):692-696.

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2020

Ryals, J. L., Knight, P. R., Stafne, E. T. 2020. Rooting response of seven passion fruit species to basal application of auxin. HortTechnology 30:692-696.

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2020

Posadas, B. C., Knight, P. R., Stafne, E. T., Coker, C. E., Blythe, E. K., Bachman, G. R., DelPrince, J. M., Langlois, S. 2020. Qualitative Assessment of the Economic Impacts of Horticulture Research and Extension at MSU Coastal Research and Extension Center. Horticulturae 6(4):106.

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2020

Stephenson, R. C., Coker, C. E., Posadas, B. C., Bachman, G. R., Harkess, R. L., Adamczyk, J. J., Knight, P. R. 2020. Economic Effect of Insect Pest Management Strategies on Small-scale Tomato Production in Mississippi. HortTechnology 30(1):64-75.

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2019

Stephenson, R. C., Coker, C. E., Posadas, B. C., Bachman, G. R., Harkess, R. L., Adamczyk, J. J., Knight, P. R. 2019. Economic effect of insect pest management strategies on small-scale tomato production in Mississippi. HortTech 30(1):64-75.

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2019

Smith, H. R., Harkess, R., Overstreet, C., Knight, P. R., Lawrence, G., Lawrence, K. P., Lang, D., Phillips, M. 2019. Effects of seed treatment nematicides on the growth and development of Gossypium hirsutum growing in Rotylenchulus reniformis infested soils under greenhouse environments. Nematropica 49(2):181-188.

2019

Stephenson, R. C., Coker, C. E., Posadas, B. C., Bachman, G. R., Harkess, R. L., Adamczyk, J. J., Knight, P. R. 2019. Effect of high tunnels on populations of whiteflies, aphids, and thrips on tomatoes in Mississippi. Journal of Horticulture 6(3):259-267.

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2019

Coker, C. E., Knight, P. R., Posadas, B. C., Ely, R. 2019. Postharvest Evaluation of Winter Rose® Series Poinsettia Stems under Consumer Conditions. Journal of Floriculture and Landscaping 5.

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2019

Gregorc, A., Sampson, B., Knight, P. R., Adamczyk, J. 2019. Diet Quality Effects on Honey Bee (Hymenoptera: Apidae) Mortality Under Laboratory Conditions. J. Apicultural Res.

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2018

Posadas, B. C., Coker, R. Y., Coker, C. E., Langlois, S. A., Knight, P. R. 2018. Computer usage among nursery and greenhouse operations in selected Southern statesSouthern United States. Mississippi Agricultural and Forestry Experiment Station Bulletin 1225:9.

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2018

Ray, J. T., Blythe, E. K., Bi, G., Knight, P. R., Reynolds, D. B., Bachman, G. R. 2018. Isopropyl alcohol and auxin application method affect phytotoxicity of herbaceous stem cuttings. ISHS 1212:307-314.

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2018

Gregorc, A., Sampson, B., Knight, P. R., Adamczyk, J. 2018. Effects of coumaphos and imidicloprid on honey bee (Hymenoptera: Apidae) lifespan and antioxidant gene regulations in laboratory experiments. Scientific Reports 8:25.

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2018

DelPrince, J. M., Knight, P. R. 2018. Activities to Determine Interest in Master Floral Designer Certification Programming. National Association of County Agricultural Agents 11(1).

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2018

Gregorc, A., Alburaki, M., Sampson, B., Knight, P. R., Adamczyk, J. 2018. Toxicity of selected acaricides to honey bees (Apis mellifera) and Varroa (Varroa destructor Anderson and Trueman) and their use in controlling Varroa within honey bee colonies. Insects 9(2):55.

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2017

Gregorc, A., Werle, C., Knight, P. R., Adamczyk, J. 2017. Brood removal or queen caging combined with oxalic acid treatment to control varroa mites (Varroa destructor) in honey bee colonies (Apis mellifera) . Apidologie

2017

Gregorc, A., Knight, P. R., Adamczyk, J. 2017. Powdered sugar shake to monitor and oxalic acid treatments to control varroa mites (Varroa destructor Anderson and Trueman) in honey bee (Apis mellifera) colonies. Journal of Apicultural Research 56:71-75.

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2016

Marble, C., Prior, S., Runion, B., Torbert, A., Gilliam, C., Fain, G., Sibley, J., Knight, P. R. 2016. Species and media effects on soil carbon dynamics in the landscape. Scientific Reports 6(25210).

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2015

Coker, R. Y., Posadas, B. C., Langlois, S. A., Knight, P. R., Coker, C. E. 2015. Current mechanization practices among greenhouse and mixed nursery/greenhouse operations in selected Gulf South states. Mississippi Agricultural and Forestry Experiment Station Bulletin 1208:9.

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2014

Cochran, D. R., Harkess, R. L., Knight, P. R., Tomaso-Peterson, M., Blythe, E. K., Gilliam, C. H. 2014. Evaluation of a Commercial Extract of Giant Knotweed on Drought Tolerance of Impatiens. HortScience 49(8):1034–1040.

2014

Posadas, B. C., Knight, P. R., Coker, C. E., Coker, R. Y., Langlois, S. A. 2014. Hiring Preferences of Nurseries and Greenhouses in US Southern States. HortTechnology 24(1):107–117.

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2014

Posadas, B. C., Knight, P. R., Coker, C. E., Coker, R. Y., Langlois, S. A. 2014. Hiring Preferences of Nurseries and Greenhouses in U.S. Southern States. HortTechnology 24(1):107-117.

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2012

Mizell, R., Knox, G., Knight, P. R., Gilliam, C., Arthers, S., Austin, R., Baldwin, H., Batson, D., Boyd, Jr, D., Bolques, A., others, . 2012. Woody ornamental and landscape plant production and pest management innovation strategic plan. USDA Southern Region IPM Center, North Carolina State University, Raleigh

2012

Marble, S. C., Prior, S. A., Runion, G. B., Torbert, H. A., Gilliam, C. H., Fain, G. B., Sibley, J. L., Knight, P. R. 2012. Effects of Fertilizer Placement on Trace Gas Emissions from Nursery Container Production. HortScience 47(8):1056-1062.

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2012

Posadas, B. C., Knight, P. R., Coker, C. E., Coker, R., Langlois, S. 2012. Economic Impacts of Mechanization or Automation on Horticulture Production Firms Sales, Employment, and Workers’ Earnings, Safety, and Retention. HortTechnology 22(3):388-401.

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2010

Posadas, B., Coker, C., Fain, G., Knight, P. R., Coker, R. 2010. Consumer Survery of Garden Chrysanthemums in Mississippi. HortTechnology 16(3):539–543.

2010

Coker, R. Y., Posadas, B. C., Langlois, S. A., Knight, P. R., Coker, C. E. 2010. Current Mechanization Systems Among Nursery-Only and Mixed Operations in Selected Gulf South States. Mississippi Agricultural and Forestry Experiment Station Bulletin 1189:9.

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2010

Posadas, B. C., Coker, R. Y., Langlois, S. A., Knight, P. R., Coker, C. E. 2010. Operational Characteristics of Nurseries and Greenhouses in the Northern Gulf of Mexico States . Mississippi Agricultural and Forestry Experiment Station Bulletin 1184:9.

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2010

Posadas, B. C., Knight, P. R., Coker, R. Y., Coker, C. E., Langlois, S. A. 2010. Socioeconomic Characteristics of Workers in Nurseries and Greenhouses in the Northern Gulf of Mexico States. Mississippi Agricultural and Forestry Experiment Station Bulletin 1182:12.

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2008

Rojas, M., Morales-Ramos, J., Lockwood, M., Etheridge, L., Carroll, J., Coker, C. E., Knight, P. R. 2008. Area-Wide Management of Subterranean Termites Using Baits in South Mississippi. Agricultural Research

2008

Posadas, B. C., Knight, P. R., Coker, R., Coker, C. E., Langlois, S., Fain, G. 2008. Socioeconomic Impact of Automation on Horticulture Production Firms in the Northern Gulf of Mexico Region. HortTechnology 18(4):697-704.

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2008

Posadas, B. C., Knight, P. R., Coker, R. Y., Coker, C. H., Langlois, S. A., Fain, G. 2008. Socioeconomic Impact of Automation on Horticulture Production Firms in the Northern Gulf of Mexico Region. HortTechnology 18(4):697-704.

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2007

Sun, J., Lockwood, M. E., Etheridge, J. L., Carroll, J., Hollomon, C. Z., Coker, C. E., Knight, P. R. 2007. Distribution of Formosan subterranean termite (Isoptera: Rhinotermitidae) in Mississippi. Journal of economic entomology 100(4):1400–1408.

2006

Knight, P. R., Anderson, J. M., McLaurin, W., Coker, C. E. 2006. (57) Growth and Phenology of Lagerstroemia Hybrids in South Mississippi. HortScience 41(4):1042–1042.

2006

Knight, P. R., Anderson, J. M., McLaurin, W., Coker, C. E. 2006. Crape myrtle evaluations in south Mississippi. HortScience 41(3):512–512.

2006

Coker, C. E., Knight, P. R., Posadas, B., Langlois, S., Coker, R. 2006. Mississippi State University’s research and education efforts to increase nursery mechanization across the Gulf South. HortScience 41(3):514–514.

2006

Posadas, B. C., Coker, C. E., Knight, P. R., Fain, G. 2006. Consumer Survey of Selected Garden Chrysanthemum Cultivars in Mississippi. HortTechnology 16(3):539-543.

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2006

Posadas, B. C., Coker, C. H., Knight, P. R., Fain, G. 2006. Consumer Survey of Selected Garden Chrysanthemum Cultivars in Mississippi. HortTechnology 16(3):539-543.

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2005

Coker, C. E., Knight, P. R., Anderson, J. M. 2005. Landscape performance of sun coleus in southern Mississippi. HortTechnology 15(3):690–693.

2004

Knight, P. R., Coker, C. E., Fain, G., Pollard, A., Coggins, P. 2004. Consumer preferences for edible daylilies. Southern Nursery Assoc. Res. Conf 49:499–501.

2004

Knight, P. R., Coker, C. E., Posadas, B. C., Anderson, J. M. 2004. Phytotoxicity and Weed Control Efficacy of Three Non-labeled Herbicides for Field-grown Hemerocallis spp. HortScience 39(4):745–745.

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2004

Klingeman, W. E., Eastwood, D. B., Brooker, J. R., Hall, C. R., Behe, B. K., Knight, P. R. 2004. Consumer Survey Identifies Plant Management Awareness and Added Value of Dogwood Powdery Mildew Resistance. HortTechnology 14(2):275-282.

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Extension Publications

Year Publications
2025

DelPrince, J. M., Englebretson, E. A., Etheredge, C. L., Knight, P. R. 2025. A Primer for the Eco-Friendly Florist. Mississippi State University Extension

2024

Coker, C. E., DelPrince, J. M., Knight, P. R. 2024. Daffodils for the Farmer Florist. Mississippi State University Extension

2023

Coker, C. E., DelPrince, J. M., Knight, P. R. 2023. Celosia argentea var. plumosa for the Farmer Florist. Mississippi State University Extension

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2023

Coker, C. E., DelPrince, J. M., Knight, P. R., Bowden, A. 2023. Cockscomb (Celosia argentea var. cristata) for the Farmer Florist. Mississippi State University Extension

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2022

Bowden, A., DelPrince, J. M., Knight, P. R. 2022. Dutch Iris for the Farmer Florist. MSU Extension p3740.

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2022

DelPrince, J. M., Ryals, J. L., Coker, C. E., Knight, P. R. 2022. Mississippi-Grown Evergreens in Winter Sympathy Designs. MSU Extension p3775.

2022

Bowden, A., DelPrince, J. M., Coker, C. E., Knight, P. R. 2022. L.A. Hybrid Lilies (Lilium longiflorum x Lilium asiatic) for the Farmer Florist. MSU Extension p3818.

2022

Coker, C. E., DelPrince, J. M., Knight, P. R. 2022. Celosia argenta var. plumosa for the Farmer Florist. MSU Extension p3915.

2020

DelPrince, J. M., Posadas, B. C., Knight, P. R., Coker, C. E. 2020. Magnolia Wreath for the Farmer Florist. Mississippi State University Extension Service Publication P3553.

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2020

DelPrince, J. M., Posadas, B. C., Knight, P. R., Tanger, S. M., Coker, C. E. 2020. Pine and Magnolia Wreath for the Farmer Florist. Mississippi State University Extension Service Publication P3499.

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Graduate Students

  • Jenny Ryals

Society Memberships

  • Alabama Nursery and Landscape Association
  • American Society for Horticultural Science
  • American Society for Horticultural Science, Southern Region
  • AmericanHort (merger of American Nursery and Landscape Association and Ohio Florists’ Association)
  • International Plant Propagator’s Society
  • International Society for Horticultural Science
  • International Society of Arborists
  • Louisiana Nurserymen’s Association
  • Society of American Florists