Josh B. Henry, PhD
Technical Services Specialist
Ball Horticultural Company
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Email:
Phone:
c: (740) 602-7219
w: (630) 352-4534
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Hi, I'm Josh!
Originally from Cleveland Ohio, I completed my undergraduate education at Ohio State University. I completed my MS and PhD at North Carolina State University co-majoring in Horticultural and Crop Sciences, and minoring in Soil Science. I also have a graduate certificate in Geographic Information Science (GIS).
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Visit fertdirtandsquirt.com to see my latest factsheets on floriculture nutrition or diagnosis.ces.ncsu.edu/tobacco/ to see my diagnostic key on tobacco nutritional disorders.
EMPLOYMENT
2021-2023
Division Agronomist
HELENA AGRI-ENTERPRISES
Provides technical support for sales representatives and customers throughout the US in the turf and ornamental markets. Responsible for training and developing solutions for fertilizers, plant protection chemicals, and precision agriculture services such as soil mapping and testing, tissue testing, water testing, and drone imagery collection and interpretation.
2019-2021
Research Scientist
SCOTTS MIRACLE-GRO
Technical lead for the Miracle-Gro Brilliant Blooms program of flowering annuals sold at Lowe's stores throughout the US. Conducted annual variety trials, fertilization studies, and developed comprehensive pest management programs for our growers.
2015-2019
Graduate Research Assistant
NORTH CAROLINA STATE UNIVERSITY
Conducting my own studies and assisting with other studies in the department of Horticultural Science. Primary investigations involve floriculture crop nutrition, plant growth regulation, tobacco nutrition, and remote sensing of nutritional disorders.
2013-2014
Undergraduate Research Assistant
ORNAMENTAL PLANT GERMPLASM CENTER
Position duties included daily plant care, greenhouse maintenance, pollination, germplasm collection and organization, and viability testing via x-ray imaging.
2011-2013
Undergraduate Research Assistant
OHIO AGRICULTURAL RESEARCH & DEVELOPMENT CENTER
Duties included substrate and fertilizer preparation, greenhouse environment management. Assisting with experiments involving hydroponic lettuce production and trialing different Fraxinus species.
EDUCATION
2017-2019
Doctor of Philosophy (Ph.D.)
NORTH CAROLINA STATE UNIVERSITY
Raleigh, North Carolina
Major: Horticultural Science
Co-Major: Crop and Soil Sciences
Graduate Certificate in Geographic Information Science
Major Professors: Drs. Matthew Vann & Brian E. Whipker
Dissertation: Characterization of tobacco abiotic disorders using unmanned vehicle (UAV) analysis
2015-2017
Master's Degree (M.S.)
NORTH CAROLINA STATE UNIVERSITY
Raleigh, North Carolina
Major: Horticultural Science
Major Professor: Dr. Brian E. Whipker
Thesis: Beneficial and adverse effects of low phosphorus fertilization of floriculture species
2013-2014
Bachelor's Degree (B.S.)
OHIO STATE UNIVERSITY
Columbus, Ohio
Major: Sustainable Plant Systems - Horticulture specialization
Minor: Agribusiness
Adviser: Dr. Peg McMahon
2011-2013
Associate's Degree (A.A.S.)
OHIO STATE UNIVERSITY AGRICULTURAL TECHNICAL INSTITUTE
Wooster, Ohio
Major: Greenhouse and Nursery Management - Greenhouse specialization
Adviser: Dr. Bob McMahon
2007-2011
High School Diploma
JAMES FORD RHODES HIGH SCHOOL
Cleveland, Ohio
2008-2013
Associate's Degree (A.A.)
CUYAHOGA COMMUNITY COLLEGE
Cleveland, Ohio
Major: Liberal Arts
Post Secondary Enrollment Options Program (PSEOP)
PUBLICATIONS
RESEARCH AND DISCOVERY
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Peer-Reviewed Scientific Journal Publications (15)
Landis, H. K. Hicks, J.B. Henry, and B.E. Whipker. 2022. Customizing the leaf tissue nutrient ranges for blue and pink hydrangeas. J. Plant Nutr. 45(1):59-68. doi: 10.1080/01904167.2021.1952431.
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Henry, J.B., I. McCall, and B.E. Whipker. 2021. Enhancement of ornamental pepper ripening with ethephon sprays or drenches. J. of Innovative Sci., Eng., and Tech. 8(5):671-674.
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Henry, J.B., I. McCall, and B.E. Whipker. 2021. Growth control of five floriculture species using paclobutrazol liner root soaks. J. of Innovative Sci., Eng., and Tech. 8(5):102-108.
Veazie, P., P. Cockson, J. Henry, P. Perkins-Veazie, and B. Whipker. 2020. Characterization of nutrient disorders and impacts on chlorophyll and anthocyanin concentration of Brassica rapa var. Chinensis. Agriculture 10(461): 1–16. doi: 10.3390/agriculture10100461.
Montgomery, K., J.B. Henry, M.C. Vann, B.E. Whipker, A.S. Huseth, and H. Mitasova. 2020. Measures of canopy structure from low-cost UAS for monitoring crop nutrient status. Drones 4(3),36:1–22. doi: 10.3390/drones4030036.
Henry, J.B., P. Perkins, I. McCall, and B.E. Whipker. 2019. Restricted phosphorus fertilization increases the betacyanin concentration and red foliage coloration of alternanthera. J. Amer. Soc. Hort. Sci. 144(4):264–273. doi: 10.21273/JASHS04702-19.
Henry, J.B., M.C. Vann, and R.S. Lewis. 2019. Agronomic practices affecting nicotine concentration in flue-cured tobacco: A review. Agronomy J. doi: 10.2134/agronj2019.04.0268.*
*Certified as one of the top downloaded Agronomy Journal publications of 2019
Landis, H., K. Hicks, P. Cockson, J. Henry, J. Smith, and B. Whipker. 2019. Expanding leaf tissue nutrient survey ranges for greenhouse cannabidiol-hemp. Crop Forage Turfgrass Mgt. 5:180081. doi:10.2134/cftm2018.09.008
Owen, W.G., B.E. Whipker, J.B. Henry, P. Cockson, and H. Landis. 2018. Low substrate pH-induced iron/manganese toxicity of New Guinea impatiens: A diagnostic guide. Plant Health Prog. 19(4):324–328. doi: 10.1094/PHP-06-18-0031-DG.
Henry, J.B., I. McCall, and B.E. Whipker. 2018. Phosphorus restriction as an alternative to chemical plant growth retardants (PGRs) in bedding plants. HortTechnology 28(2):136–142. doi:10.21273/HORTTECH03939-17.
Henry, J.B., I. McCall, P.V. Nelson, and B.E. Whipker. 2018. Source-sink interactions lead to reproductive stage phosphorus deficiency symptoms on the upper foliage of Capsicum annuum and Chrysanthemum morifolium. Scientia Hort. 238:288–294. doi:10.1016/j.scientia.2018.04.069.
Henry, J.B., M. Vann, I. McCall, P. Cockson, and B.E. Whipker. 2018. Nutrient disorders of burley and flue-cured tobacco part 2: Micronutrient disorders. Crop Forage Turfgrass Mgt. 4:170077. doi:10.2134/cftm2017.11.0077.
Henry, J.B., M. Vann, I. McCall, P. Cockson, and B.E. Whipker. 2018. Nutrient disorders of burley and flue-cured tobacco part 1: Macronutrient deficiencies. Crop Forage Turfgrass Mgt. 4:170076. doi:10.2134/cftm2017.11.0076.
Henry, J.B., I. McCall, B. Jackson, and B.E. Whipker. 2017. Growth response of herbaceous ornamentals to phosphorus fertilization. HortScience 52(10):1362–1367. doi:10.21273/HORTSCI12256-17.
Cockson, P., J. Henry, I. McCall, and B.E. Whipker. 2017. Nutrient disorders of 'Orchestra Pink' gloxinia. HortTechnology 27(6):789–793. doi:10.21273/HORTTECH03833-17.
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Refereed Symposia Publications (8)
Henry, J., P. Cockson, I. McCall, and B. Whipker. 2020. Comparing nutrient disorder symptomology of Lactuca sativa ‘Salanova Green’ and ‘Salanova Red’. Acta Hort. 1273:227–234. doi: 10.17660/ActaHortic.2020.1273.31.
Henry, J., I. McCall, P. Cockson, and B. Whipker. 2020. Dahlia foliar nutrient sufficiency ranges and growth response to fertilizer concentrations. Acta Hort. 1273:243–250. doi: 10.17660/ActaHortic.2020.1273.33.
Henry, J.B., B.E. Whipker, and I. McCall. 2019. Coleus foliar nutrient sufficiency ranges and growth response to nitrogen concentrations. Acta Hort. 1266:63–70. doi: 10.17660/ActaHortic.2019.1266.10.
Henry, J.B., B.E. Whipker, and I. McCall. 2019. Growth response of Angelonia angustifolia to phosphorus fertilization. Acta Hort. 1266:187–192. doi: 10.17660/ActaHortic.2019.1266.26.
Henry, J.B., B.E. Whipker, and I. McCall. 2019. Nutrient disorders of Lactuca sativa ‘Salanova Red’. Acta Hort. 1266:283–290. doi: 10.17660/ActaHortic.2019.1266.40.
Henry, J.B., B.E. Whipker, and I. McCall. 2019. Redefining phosphorus nutrition and deficiency symptomology for ornamentals grown in soilless substrates. Acta Hort. 1266:345–352. doi: 10.17660/ActaHortic.2019.1266.48.
Landis, H., K. Hicks, I. McCall, J.B. Henry, and B.E. Whipker. 2019. Incorporating slow release coated polymer aluminum sulfate into the substrate to produce blue hydrangeas. Acta Hort. 1266:223–230. doi: 10.17660/ActaHortic.2019.1266.31.
Whipker, B.E., J.B. Henry, and I. McCall. 2019. Characterization of Pelargonium x domesticum nutrient disorders. Acta Hort. 1266:49–54. doi: 10.17660/ActaHortic.2019.1266.8.
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Conference Proceedings (5)
Cockson, P., J.B. Henry, I. McCall, and B.E. Whipker. 2017. Comparison of foliar sprays for coleus growth control. 44th Proc. Annu. Plant Growth Regulat. Soc. Amer. Conf., Anchorage, AK, 6–10 Aug. 2017. 44:78–82.
Henry, J.B., B.E. Whipker, and I. McCall. 2017. Comparison of ornamental pepper ripening enhancement with ethephon applied as a spray or drench. 44th Proc. Annu. Plant Growth Regulat. Soc. Amer. Conf., Anchorage, AK, 6–10 Aug. 2017. 44: 87–95.
Henry, J.B., B.E. Whipker, and I. McCall. 2017. Growth control of two floriculture species using paclobutrazol liner soaks. 44th Proc. Annu. Plant Growth Regulat. Soc. Amer. Conf., Anchorage, AK, 6–10 Aug. 2017. 44:13–21.
Henry, J.B., B.E. Whipker, and I. McCall. 2017. Hosta shoot enhancement with benzyladenine sprays and drenches. 44th Proc. Annu. Plant Growth Regulat. Soc. Amer. Conf., Anchorage, AK, 6–10 Aug. 2017. 44:65–69.
Henry, J.B., B.E. Whipker and I. McCall. 2016. Phosphorus restriction as an alternative method of growth control for Petunia. 43rd Proc. Annu. Plant Growth Regulat. Soc. Amer. Conf., Raleigh, NC, 16–21 July 2016. 43:52–57.
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EXTENSION AND OUTREACH
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Industry Extension Publications (63)
a. e-GRO Articles (57)
Whipker. B.E., P. Cockson, J.B. Henry, and W.G. Owen. 2020. Nutritional monitoring series: Ipomea (Ipomea batatas). e-GRO Nutritional Monitoring 3(12)2:1–7. https://drive.google.com/file/d/1H-V57V_mC4l1MbN-PLaP9BOk0B42R5-z/view
Whipker. B.E., P. Cockson, J.B. Henry, and W.G. Owen. 2020. Nutritional monitoring series: Pentas (Pentas lanceolata). e-GRO Nutritional Monitoring 3(11)2:1–7. https://drive.google.com/file/d/19bOD-OsDY0MdbOJIggHvd0LvpomL9lQ5/view
Whipker. B.E., P. Cockson, J.B. Henry, and W.G. Owen. 2020. Nutritional monitoring series: Coleus (Plectranthus scutellarioides). e-GRO Nutritional Monitoring 3(10):1–7. https://drive.google.com/file/d/1t7OR_-bQmidk_Y8RDndiBAncITcnq-zf/view
Owen, W.G., J. Henry, and B.E. Whipker. 2020. Nutritional monitoring series: Delphinium (Delphinium elatum). e-GRO Nutritional Monitoring 3(7):1–7. https://drive.google.com/file/d/17tlUeREp9ZATODGWz9g8fQpIVxMxkbBX/view
Owen, W.G., J. Henry, and B.E. Whipker. 2020. Nutritional monitoring series: Crossandra (Crossandra infundibuliformis). e-GRO Nutritional Monitoring 3(6):1–7. https://drive.google.com/file/d/1t3vrO_Nn4XMQ1DydBMR-Ty_iMCFoOO2u/view
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Owen, W.G., J. Henry, and B.E. Whipker. 2019. Nutritional monitoring series: Wax leaf begonia (Begonia semperflorens-cultorum). e-GRO Nutritional Monitoring 2(12):1–6. https://drive.google.com/file/d/1sVaIfrhOVIWdl2cEardRWcyfpf8G3TTg/view
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Owen, W.G., J. Henry, and B.E. Whipker. 2019. Nutritional monitoring series: Vinca (Catharanthus roseus). e-GRO Nutritional Monitoring 2(11):1–6. https://drive.google.com/file/d/1r-_3EWoZTBOeL11d9Nw7LKgLnF76GAoY/view
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Owen, W.G., J. Henry, and B.E. Whipker. 2019. Nutritional monitoring series: Snapdragon (Antirrhinum majus). e-GRO Nutritional Monitoring 2(10):1–6. https://drive.google.com/file/d/12H1rEHAEeIAKc_Js8uyyVbVitaJG9cWj/view
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Owen, W.G., J. Henry, and B.E. Whipker. 2019. Nutritional monitoring series: Salvia, annual (Salvia splendens). e-GRO Nutritional Monitoring 2(9):1–6. https://drive.google.com/file/d/1nVHelApYhi3yKq2W5eVTziPMYX5Dcjww/view
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Owen, W.G., J. Henry, and B.E. Whipker. 2019. Nutritional monitoring series: Fuchsia (Fuchsia ×hybrida). e-GRO Nutritional Monitoring 2(8):1–7. https://drive.google.com/file/d/1fP-OEB2jJ5JOneRYHmlSzgA8ds4kc6St/view
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Owen, W.G., J. Henry, and B.E. Whipker. 2019. Nutritional monitoring series: Dusty miller (Senecio cineraria). e-GRO Nutritional Monitoring 2(7):1–6. https://drive.google.com/file/d/1tfKmyHOuZBnblJMH0DNdam1owcApBIRq/view
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Henry, J., B.E. Whipker, and W.G. Owen. 2019. Nutritional monitoring series: Verbena (Verbena ×hybrida). e-GRO Nutritional Monitoring 2(6):1–8. https://drive.google.com/file/d/1fw1WiENlN1je3OwD3wJT-gJLgKHijlt7/view
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Henry, J., B.E. Whipker, W.G. Owen, and C.J. Currey. 2019. Nutritional monitoring series: Thyme (Thymus vulgaris). e-GRO Nutritional Monitoring 2(5):1–7. https://drive.google.com/file/d/1OIJ7m0efO6vxrEMNTx7n_m5pgAvYOJID/view
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Henry, J., B.E. Whipker, and W.G. Owen. 2019. Nutritional monitoring series: Scaevola (fan flower) (Scaevola aemula). e-GRO Nutritional Monitoring 2(4):1–7. https://drive.google.com/file/d/1rs5jr3fFU0cQMn0_-Ox_xhmHhCGqVy7R/view
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Henry, J., B.E. Whipker, W.G. Owen, and C.J. Currey. 2019. Nutritional monitoring series: Oregano (Origanum vulgare). e-GRO Nutritional Monitoring 2(3):1–7. https://drive.google.com/file/d/1N4SNVLQLGF3vgs4gWgvXJcMjwzxyedMH/view
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Henry, J., B.E. Whipker, and W.G. Owen. 2019. Nutritional monitoring series: Heliotrope (Heliotropium arborescens). e-GRO Nutritional Monitoring 2(2):1–8. https://drive.google.com/file/d/1ka8j40XMVV6q_daP7cZQ0MXwjmwXmpz3/view
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Henry, J., B.E. Whipker, and W.G. Owen. 2019. Nutritional monitoring series: Cleome (spider flower) (Cleome hassleriana). e-GRO Nutritional Monitoring 2(1):1–7. https://drive.google.com/file/d/1uN56vfrPYuaaV3alb1apJ6dZe6UKKzZ0/view
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Owen, W.G., B.E. Whipker, and J. Henry. 2019. Properly applying hydrated limestone to raise substrate pH. e-GRO Alert 8(22):1–4.
http://e-gro.org/pdf/2019_822.pdf
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Whipker, B.E., and J. Henry. 2019. Pericallis: Leaf mottling and necrosis. e-GRO Alert 8(14):1–4. http://www.e-gro.org/pdf/2019_814.pdf
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Whipker, B.E., J. Henry, P. Cockson, and W.G. Owen. 2019. 1:2 Dilution procedure: Determining initial substrate pH. e-GRO Alert 8(13):1–4. http://www.e-gro.org/pdf/2019_813.pdf
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Owen, W.G., A. Moore, B.E. Whipker, and J. Henry. 2019. Pansy: Lower leaf purplish-black spotting. e-GRO Alert 8(1):1–7.
http://www.e-gro.org/pdf/2019_801.pdf
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Henry, J., B.E. Whipker, and W.G. Owen. 2018. Nutritional monitoring series: Pepper, transplants (Capsicum annuum). e-GRO Nutritional Monitoring 1(17):1–7. https://drive.google.com/file/d/1iGUbo3oD1x9aVaYCy4RUbo7EZipDYgFR/view
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Cockson, P., W.G. Owen, J. Henry, and B.E. Whipker. 2018. Nutritional monitoring series: Eggplant, transplants (Solanum melongena). e-GRO Nutritional Monitoring 1(16):1–7. https://drive.google.com/file/d/1MJyO4CKX7KUJ9bbK39ris6JnfrV0yPzK/view
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Whipker, B.E., P. Cockson, J. Henry, and W.G. Owen. 2018. Nutritional monitoring series: Tomato transplants (Solanum lycopersicum). e-GRO Nutritional Monitoring 1(15):1–7. https://drive.google.com/file/d/1xaS6D8hrb-ytiFhcgIm1n8QwmwvVkxAf/view
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Owen, W.G., P. Cockson, J. Henry, B.E. Whipker, W.G. Owen, and C.J. Currey. 2018. Nutritional monitoring series: Basil (Ocimum basilicum). e-GRO Nutritional Monitoring 1(14):1–7. https://drive.google.com/file/d/1aEWNSK1tx0eGJ1G5AFp6UjYq71hh15xX
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Henry, J., B.E. Whipker, W.G. Owen, and C.J. Currey. 2018. Nutritional monitoring series: Lettuce (Lactuca sativa). e-GRO Nutritional Monitoring 1(13):1–7. https://drive.google.com/open?id=1beOhWQIGG1u_cwTLeqt2my__t49nkaba
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Owen, W.G., J. Henry, and B.E. Whipker. 2018. Nutritional monitoring series: Primula (Primula vulgaris). e-GRO Nutritional Monitoring 1(12):1–6. https://drive.google.com/file/d/1mPlrlA-woddiX-Ut4txxZ59l55jEp1bM/view
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Owen, W.G., J. Henry, and B.E. Whipker. 2018. Nutritional monitoring series: Cineraria (Pericallis ×hybrida). e-GRO Nutritional Monitoring 1(11):1–8. https://drive.google.com/file/d/1lOcUc5kD2TEb6Z671RXeN9V04jMmICpc/view
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Owen, W.G., J. Henry, and B.E. Whipker. 2018. Nutritional monitoring series: Calceolaria (Calceolaria ×herbeohybrida). e-GRO Nutritional Monitoring 1(10):1–8. https://drive.google.com/file/d/1rgAbYcns53LeonPJ2p_Rxvm1qqrYlXuR/view
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Whipker, B.E., J. Henry, and W.G. Owen. 2018. Nutritional monitoring series: Hydrangea – Pink/white sepals (Hydrangea macrophylla). e-GRO Nutritional Monitoring 1(9):1–6. https://drive.google.com/open?id=1SjkihLCI45V3jmv72o2w9bwRwV02Flmm
Whipker, B.E., J. Henry, and W.G. Owen. 2018. Nutritional monitoring series: Hydrangea – Blue sepals (Hydrangea macrophylla). e-GRO Nutritional Monitoring 1(8):1–6. https://drive.google.com/open?id=1NvnRQ9AqcquhQzpPP026gWnnMSp9rsjk
Owen, W.G., J. Henry, and B.E. Whipker. 2018. Nutritional monitoring series: Dahlia, cutting (Dahlia ×hybrida). e-GRO Nutritional Monitoring 1(7):1–6. https://e-gro.org/pdf/2018_709.pdf
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Owen, W.G., J. Henry, and B.E. Whipker. 2018. Nutritional monitoring series: New Guinea impatiens (Impatiens hawkeri). e-GRO Nutritional Monitoring 1(6):1–7. https://e-gro.org/pdf/2018_708.pdf
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Whipker, B.E., J. Henry, and W.G. Owen. 2018. Nutritional monitoring series: Gerbera (Gerbera jamesonii). e-GRO Nutritional Monitoring 1(5):1–6. https://e-gro.org/pdf/2018_707.pdf
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Whipker, B.E., J. Henry, and W.G. Owen. 2018. Nutritional monitoring series: Calibrachoa (Calibrachoa ×hybrida). e-GRO Nutritional Monitoring 1(4):1–6. https://e-gro.org/pdf/2018_706.pdf
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Henry, J., B.E. Whipker, and W.G. Owen. 2018. Nutritional monitoring series: Petunias (Petunia ×atkinsiana). e-GRO Nutritional Monitoring 1(3):1–6. https://e-gro.org/pdf/2018_705.pdf
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Henry, J., B.E. Whipker, and W.G. Owen. 2018. Nutritional monitoring series: Geraniums (Pelargonium ×hortorum). e-GRO Nutritional Monitoring 1(2):1–6. https://e-gro.org/pdf/2018_704.pdf
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Whipker, B.E., J. Henry, and W.G. Owen. 2018. Nutritional monitoring series: Marigolds (Tagetes erecta & T. patula). e-GRO Nutritional Monitoring 1(1):1–6. https://e-gro.org/pdf/2018_703.pdf
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Whipker, B.E., J. Henry, and W.G. Owen. 2018. Corrective procedures for modifying substrate pH and electrical conductivity (EC). e-GRO Alert 7(2):1–5. https://e-gro.org/pdf/2018_702.pdf
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Owen, W.G., J. Henry, and B.E. Whipker. 2017. Nutritional monitoring: Marigolds. e-GRO Alert 6(41):1–5.
http://e-gro.org/pdf/2017_641.pdf
Henry, J., M. Bertone, and B. E. Whipker. 2017. Russet skinned tomatoes? Beware of tomato russet mites. e-GRO Alert 6(29):1–5.
http://e-gro.org/pdf/2017_629.pdf
Henry, J., and B. E. Whipker. 2017. Tomato leaf distortion: Unintended herbicide drift. e-GRO Alert 6(28):1–5.
http://e-gro.org/pdf/2017_628.pdf
Henry, J., and B. E. Whipker. 2017. St. John’s wort: Lower leaf necrotic spotting. e-GRO Alert 6(25):1–5.
http://e-gro.org/pdf/2017_625.pdf
Landis, H., J. Henry, and B. E. Whipker. 2017. Hydrangea nutritional status: Lower leaf purpling (phosphorus deficiency). e-GRO Alert 6(15):1–4. http://e-gro.org/pdf/2017_615.pdf
Whipker, B. E., J. Henry, and H. Landis. Hydrangea nutritional status: Upper leaf tip necrosis. e-GRO Alert 6(13):1–5.
http://e-gro.org/pdf/2017_613.pdf
Whipker, B. E. and J. Henry. 2017. Geraniums: Diagnosing nutrient disorders. e-GRO Alert 6(1):1–6.
http://e-gro.org/pdf/2017_601.pdf
Henry, J. B. and B. E. Whipker. 2016. Distorted and stunted growth: Ornamental peppers. e-GRO Alert 5(38):1–5.
http://e-gro.org/pdf/2016_538.pdf
Henry, J. and B. E. Whipker. 2016. Knock out rose: Undifferentiated growth on stem. e-GRO Alert 5(37):1–4.
http://e-gro.org/pdf/2016_537.pdf
Whipker, B. E. and J. Henry. 2016. Stephanotis: White ringspots. e-GRO Alert 5(36):1–4.
http://e-gro.org/pdf/2016_536.pdf
Henry, J., P. Cockson and B. E. Whipker. 2016. Dragon wing begonia: Diagnosing upper leaf interveinal chlorosis. e-GRO Alert 5(34):1–4.
http://e-gro.org/pdf/2016_534.pdf
Whipker, B. E. and J. Henry. 2016. Lysimachia: Lower leaf purplish-black spotting. e-GRO Alert 5(33):1–4.
http://e-gro.org/pdf/2016_533.pdf
Henry, J. and B. E. Whipker. 2016. Nitrogen deficiency: Don’t let bronze foliage fool you. e-GRO Alert 5(32):1–6.
http://e-gro.org/pdf/2016_532.pdf
Whipker, B. E. and J. Henry. 2016. Pericallis: Diagnosing lower leaf yellowing and necrosis. e-GRO Alert 5(18):1–4.
http://e-gro.org/pdf/2016_518.pdf
Henry, J. and B. E. Whipker. 2016. Geranium: Diagnosing lower leaf reddish-brown spots. e-GRO Alert 5(17):1–4.
http://e-gro.org/pdf/2016_517.pdf
Whipker, B. E. and J. Henry. 2016. Gerbera: Diagnosing lower leaf purplish-black spots. e-GRO Alert 5(16):1–4.
http://e-gro.org/pdf/2016_516.pdf
Henry, J. and B. E. Whipker. 2016. Scaevola: What actually causes interveinal chlorosis? e-GRO Alert 5(3):1–5.
http://e-gro.org/pdf/2016_503.pdf
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Henry, J. and B. E. Whipker. 2015. Revising your phosphorus fertilization strategy. e-GRO Research Report 2015-10:1–5.
http://e-gro.org/pdf/2015-06%20NCSU%20PGR%20Research.pdf
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b. Trade Magazine Articles (6)
Whipker, B., J. Henry, W.G. Owen, C. Currey, B. Krug, R. Lopez. 2018. Keeping in front of the curve: pH and EC monitoring. Greenhouse Grower 36(1):62–70.
Henry, J. and B. Whipker. 2017. Phosphorus deficiency on upper leaves. GrowerTalks 81(5):60–64. http://www.ballpublishing.com/magazine/gt_17_09/index.aspx
Henry, J. and B. Whipker. 2017. Seeing (more) red. GrowerTalks 81(4):68–71. http://www.ballpublishing.com/magazine/gt_17_08/index.aspx
Henry, J. and B. Whipker. 2017. Growth control on the low. GrowerTalks 81(3):88–92. http://www.ballpublishing.com/magazine/gt_17_07/index.aspx
Henry, J. and B. Whipker. 2017. Go high or go low? GrowerTalks 81(2):69–73. http://www.ballpublishing.com/magazine/gt_17_06/index.aspx
Henry, J. and B. E. Whipker. 2016. Revising your phosphorus fertilization strategy. GrowerTalks 80(9):60–61. http://www.ballpublishing.com/magazine/gt_16_02/index.aspx#
e-Books (2)
Owen, W.G., J. Henry, B.E. Whipker, P. Cockson, and C. Currey. 2018. Fert, dirt, & squirt: Monitoring pH & EC of greenhouse crops. e-GRO Diagnostic Series: Number 12. Link: https://drive.google.com/file/d/1KVVrXcqjTZdS-D3evQLS97EY9wloEth9/view
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Cockson, P., J. Henry, M. Vann, I. McCall, and B. Whipker. 2017. Tobacco: Diagnosing nutritional disorders. Forensic Floriculture. p. 62. Link: https://itunes.apple.com/us/book/tobacco/id1196930978?ls=1&mt=11
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Factsheets (13)
Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Nitrogen Deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-nitrogen-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Phosphorus Deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-phosphorus-p-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Potassium Deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-potassium-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Calcium Deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-calcium-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Magnesium deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-magnesium-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Sulfur deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-sulfur-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Boron deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-boron-b-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Copper deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-copper-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Iron deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-iron-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Manganese deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-manganese-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Molybdenum deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-molybdenum-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Zinc deficiency. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-zinc-deficiency
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Vann, M., J. Henry, P. Cockson, and B. Whipker. 2017. Tobacco - Boron toxicity. North Carolina St. Univ. Tobacco Diagnostic Key. http://content.ces.ncsu.edu/tobacco-boron-toxicity
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