Brian Whipker

Veazie, P., Chen, H., Hicks, K., Holley, J., Eylands, N., Mattson, N., … Whipker, B. E. (2024). A Data-driven Approach for Generating Leaf Tissue Nutrient Interpretation Ranges for Greenhouse Lettuce. HORTSCIENCE, 59(3), 267–277. https://doi.org/10.21273/HORTSCI17582-23

Whipker, B., Veazie, P., Ballance, M. S., Hicks, K., Owen, W. G., Rich, W. T., … Cockson, P. (2024, March 1). Coleus cultivars nutritional status as a function of leaf coloration. JOURNAL OF PLANT NUTRITION. https://doi.org/10.1080/01904167.2024.2325939

Veazie, P., Jeong, K. Y., Jackson, B., Suchoff, D., & Whipker, B. E. (2024). Peat Substrates Amended with Wood-based Biochar Do Not Influence the Efficacy of Paclobutrazol Drenches. HORTSCIENCE, 59(2), 248–254. https://doi.org/10.21273/HORTSCI17621-23

Veazie, P., Balance, M. S., Whipker, B. E., & Jeong, K. Y. (2023). Comparison of Peat-Perlite-based and Peat-Biochar-based Substrates with Varying Rates of Calcium Silicate on Growth and Cannabinoid Production of <i>Cannabis sativa</i> 'BaOx'. HORTSCIENCE, 58(10), 1250–1256. https://doi.org/10.21273/HORTSCI17324-23

James, M. S., Vann, M. C., Suchoff, D. H., McGinnis, M., Whipker, B. E., Edmisten, K. L., & Gatiboni, L. C. (2023, April 18). Hemp yield and cannabinoid concentrations under variable nitrogen and potassium fertilizer rates. CROP SCIENCE, Vol. 4. https://doi.org/10.1002/csc2.20966

Pandey, P., Veazie, P., Whipker, B., & Young, S. (2023). Predicting foliar nutrient concentrations and nutrient deficiencies of hydroponic lettuce using hyperspectral imaging. BIOSYSTEMS ENGINEERING, 230, 458–469. https://doi.org/10.1016/j.biosystemseng.2023.05.005

Henry, J., Veazie, P., Furman, M., Vann, M., & Whipker, B. (2023). Spectral Discrimination of Macronutrient Deficiencies in Greenhouse Grown Flue-Cured Tobacco. PLANTS-BASEL, 12(2). https://doi.org/10.3390/plants12020280

Veazie, P., Ballance, M. S., & Whipker, B. (2023). Supplemental lighting spectrum impact on sweet potato cutting production and rooting. CROP FORAGE & TURFGRASS MANAGEMENT, 9(1). https://doi.org/10.1002/cft2.20202

Veazie, P., Jeong, K. Y., Ballance, M. S., & Whipker, B. E. (2023). The Use of Silicon Substrate Amendments to Decrease Micronutrient Concentrations at Varying Micronutrient Fertility Rates with Cannabis sativa 'Auto CBG'. HORTSCIENCE, 58(7), 797–803. https://doi.org/10.21273/HORTSCI17162-23

Lu, Y., Young, S., Linder, E., Whipker, B., & Suchoff, D. (2022). Hyperspectral Imaging With Machine Learning to Differentiate Cultivars, Growth Stages, Flowers, and Leaves of Industrial Hemp (Cannabis sativa L.). FRONTIERS IN PLANT SCIENCE, 12. https://doi.org/10.3389/fpls.2021.810113

Veazie, P., Pandey, P., Young, S., Ballance, M. S., Hicks, K., & Whipker, B. (2022). Impact of Macronutrient Fertility on Mineral Uptake and Growth of Lactuca sativa 'Salanova Green' in a Hydroponic System. HORTICULTURAE, 8(11). https://doi.org/10.3390/horticulturae8111075

Cockson, P., & Whipker, B. E. (2021). Characterization of nutrient disorders of ornamental Brassica oleracea 'Red Bor'. III INTERNATIONAL SYMPOSIUM ON GROWING MEDIA, COMPOSTING AND SUBSTRATE ANALYSIS, Vol. 1305, pp. 423–430. https://doi.org/10.17660/ActaHortic.2021.1305.55

Landis, H., Hicks, K., McCall, I., Henry, J. B., & Whipker, B. E. (2021, July 7). Customizing the leaf tissue nutrient ranges for blue and pink hydrangeas. JOURNAL OF PLANT NUTRITION. https://doi.org/10.1080/01904167.2021.1952431

Landis, H., Hicks, K., McCall, I., Henry, J. B., & Whipker, B. E. (2021). Enhancing blue hydrangea sepal coloration by applying aluminum sulfate through constant liquid fertilization. III INTERNATIONAL SYMPOSIUM ON GROWING MEDIA, COMPOSTING AND SUBSTRATE ANALYSIS, Vol. 1305, pp. 455–461. https://doi.org/10.17660/ActaHortic.2021.1305.60

Smith, J. T., Jackson, B. E., Whipker, B. E., & Fonteno, W. C. (2021). Industrial hemp vegetative growth affected by substrate composition. III INTERNATIONAL SYMPOSIUM ON GROWING MEDIA, COMPOSTING AND SUBSTRATE ANALYSIS, Vol. 1305, pp. 83–89. https://doi.org/10.17660/ActaHortic.2021.1305.12

Cockson, P., & Whipker, B. E. (2021). Refinement of conventional and OMRI fertilization of pot grown Solanum lycopersicum. III INTERNATIONAL SYMPOSIUM ON GROWING MEDIA, COMPOSTING AND SUBSTRATE ANALYSIS, Vol. 1305, pp. 431–436. https://doi.org/10.17660/ActaHortic.2021.1305.56

Cockson, P., Veazie, P., Davis, M., Barajas, G., Post, A., Crozier, C. R., … Whipker, B. E. (2021). The Impacts of Micronutrient Fertility on the Mineral Uptake and Growth of Brassica carinata. AGRICULTURE-BASEL, 11(3), 221. https://doi.org/10.3390/agriculture11030221

Veazie, P., Cockson, P., Henry, J., Perkins-Veazie, P., & Whipker, B. (2020). Characterization of Nutrient Disorders and Impacts on Chlorophyll and Anthocyanin Concentration of Brassica rapa var. Chinensis. AGRICULTURE-BASEL, 10(10). https://doi.org/10.3390/agriculture10100461

Cockson, P., Schroeder-Moreno, M., Veazie, P., Barajas, G., Logan, D., Davis, M., & Whipker, B. E. (2020). Impact of Phosphorus on Cannabis sativa Reproduction, Cannabinoids, and Terpenes. APPLIED SCIENCES-BASEL, 10(21). https://doi.org/10.3390/app10217875

Owen, W. G., Jackson, B. E., Fonteno, W. C., & Whipker, B. E. (2020). Liming Requirements of Greenhouse Peat-based Substrates Amended with Pine Wood Chips as a Perlite Alternative. HORTTECHNOLOGY, 30(2), 219–230. https://doi.org/10.21273/HORTTECH04506-19

Montgomery, K., Henry, J., Vann, M., Whipker, B. E., Huseth, A., & Mitasova, H. (2020). Measures of Canopy Structure from Low-Cost UAS for Monitoring Crop Nutrient Status. Drones, 4(3), 36. https://doi.org/10.3390/drones4030036

Whipker, B. E., Cockson, P., & Smith, J. T. (2020). Night interruption lighting equally effective as daylength extension in retaining the vegetative state of Cannabis mother plants. CROP FORAGE & TURFGRASS MANAGEMENT, 6(1). https://doi.org/10.1002/cft2.20001

Currey, C. J., Metz, V. C., Flax, N. J., Litvin, A. G., & Whipker, B. E. (2020). Restricting Phosphorous Can Manage Growth and Development of Containerized Sweet Basil, Dill, Parsley, and Sage. HORTSCIENCE, 55(11), 1722–1729. https://doi.org/10.21273/HORTSCI14882-20

Cockson, P., Landis, H., Smith, T., Hicks, K., & Whipker, B. E. (2019). Characterization of Nutrient Disorders of Cannabis sativa. APPLIED SCIENCES-BASEL, 9(20). https://doi.org/10.3390/app9204432

Landis, H., Hicks, K., Cockson, P., Henry, J. B., Smith, J. T., & Whipker, B. E. (2019). Expanding Leaf Tissue Nutrient Survey Ranges for Greenhouse Cannabidiol-Hemp. CROP FORAGE & TURFGRASS MANAGEMENT, 5(1). https://doi.org/10.2134/cftm2018.09.0081

Henry, J. B., Perkins-Veazie, P., McCall, I., & Whipker, B. E. (2019). Restricted Phosphorus Fertilization Increases the Betacyanin Concentration and Red Foliage Coloration of Alternanthera. JOURNAL OF THE AMERICAN SOCIETY FOR HORTICULTURAL SCIENCE, 144(4), 264–273. https://doi.org/10.21273/JASHS04702-19

Henry, J. B., Vann, M., McCall, I., Cockson, P., & Whipker, B. E. (2018). Nutrient Disorders o Burley and Flue-Cured Tobacco: Part 1-Macronutrient Deficiencies. CROP FORAGE & TURFGRASS MANAGEMENT, 4(1). https://doi.org/10.2134/cftm2017.11.0076

Henry, J. B., Vann, M., McCall, I., Cockson, P., & Whipker, B. E. (2018). Nutrient Disorders of Burley and Flue-Cured Tobacco: Part 2-Micronutrient Disorders. CROP FORAGE & TURFGRASS MANAGEMENT, 4(1). https://doi.org/10.2134/cftm2017.11.0077

Henry, J. B., McCall, I., & Whipker, B. E. (2018). Phosphorus Restriction as an Alternative to Chemical Plant Growth Retardants in Angelonia and New Guinea Impatiens. HORTTECHNOLOGY, 28(2), 136–142. https://doi.org/10.21273/horttech03939-17

Henry, J. B., McCall, I., Nelson, P. V., & Whipker, B. E. (2018). Source-sink interactions lead to atypical reproductive stage phosphorus deficiency symptoms on the upper foliage of Capsicum annuum and Chrysanthemum x morifolium. SCIENTIA HORTICULTURAE, 238, 288–294. https://doi.org/10.1016/j.scienta.2018.04.069

Henry, J. B., McCall, I., Jackson, B., & Whipker, B. E. (2017). Growth Response of Herbaceous Ornamentals to Phosphorus Fertilization. HORTSCIENCE, 52(10), 1362–1367. https://doi.org/10.21273/hortsci12256-17

Barnes, J., Nelson, P. V., Hesterberg, D., Shi, W., & Whipker, B. E. (2017). Modeling impact of nitrogen carrier and concentration on root substrate pH. JOURNAL OF PLANT NUTRITION, 40(15), 2101–2108. https://doi.org/10.1080/01904167.2016.1143502

Barker, A., McCall, I., & Whipker, B. E. (2016). Growth control of 'Imperial Dark Blue' Plumbago with ethephon, flurprimidol, and paclobutrazol substrate drenches. HortTechnology, 26(4), 493–496.

Barnes, J., Whipker, B., McCall, I., & Frantz, J. (2016). Nutrient disorders of Dianthus 'Bouquet Purple'. JOURNAL OF PLANT NUTRITION, 39(13), 1950–1957. https://doi.org/10.1080/01904167.2016.1143504

Owen, W. G., Jackson, B. E., Whipker, B. E., & Fonteno, W. C. (2016). Paclobutrazol drench activity not affected in sphagnum peat-based substrates amended with pine wood chip aggregates. HortTechnology, 26(2), 156–163.

Owen, W. G., Jackson, B. E., Whipker, B. E., & Fonteno, W. C. (2016). Pine wood chips as an alternative to perlite in greenhouse substrates: Nitrogen requirements. HortTechnology, 26(2), 199–205.

Barnes, J., Whipker, B., McCall, I., & Frantz, J. (2015). Characterization of nutrient disorders of Abutilon x hybridum 'Bella Yellow'. International conference and exhibition on soilless culture, 1062, 29–37. https://doi.org/10.17660/actahortic.2015.1062.3

Barnes, J., Whipker, B., McCall, I., & Frantz, J. (2015). Characterization of nutrient disorders of Dahlia x hybrida 'Maxi Morelia'. International conference and exhibition on soilless culture, 1062, 39–47. https://doi.org/10.17660/actahortic.2015.1062.4

Barnes, J., Whipker, B., McCall, I., & Frantz, J. (2015). Characterization of nutrient disorders of Fuchsia x hybrida 'Gartenmeister Bonstedt'. International conference and exhibition on soilless culture, 1062, 49–57. https://doi.org/10.17660/actahortic.2015.1062.5

Barnes, J., Whipker, B., McCall, I., & Frantz, J. (2015). Characterization of nutrient disorders of Senecio cineraria 'Silver Mist'. International conference and exhibition on soilless culture, 1062, 59–66. https://doi.org/10.17660/actahortic.2015.1062.6

Ahmad, I., Whipker, B. E., & Dole, J. M. (2015). Flurprimidol preplant corm soaks or drenches affect potted gladiolus production. XXIX INTERNATIONAL HORTICULTURAL CONGRESS ON HORTICULTURE: SUSTAINING LIVES, LIVELIHOODS AND LANDSCAPES (IHC2014): INTERNATIONAL SYMPOSIUM ON ORNAMENTAL HORTICULTURE IN THE GLOBAL GREENHOUSE, Vol. 1104, pp. 103–108. https://doi.org/10.17660/actahortic.2015.1104.16

Ahmad, I., Whipker, B. E., & Dole, J. M. (2015). Paclobutrazol or Ancymidol Effects on Postharvest Performance of Potted Ornamental Plants and Plugs. HORTSCIENCE, 50(9), 1370–1374. https://doi.org/10.21273/hortsci.50.9.1370

Ahmad, I., Dole, J. M., & Whipker, B. E. (2015). Paclobutrazol or uniconazole effects on ethylene sensitivity of potted ornamental plants and plugs. SCIENTIA HORTICULTURAE, 192, 350–356. https://doi.org/10.1016/j.scienta.2015.04.032

Carlson, A. S., Dole, J. M., & Whipker, B. E. (2015, February). Plant Growth Regulator Drenches Suppress Foliage and Inflorescence Height of 'Leia' Pineapple Lily. HORTTECHNOLOGY, Vol. 25, pp. 105–109. https://doi.org/10.21273/horttech.25.1.105

Whipker, B. E., McCall, I., Barnes, J., & Frantz, J. (2014). Automated system for inducing nutrient disorders utilized in grower-based guides: Exacum affine 'Royal Dane Blue'. International symposium on growing media and soilless cultivation, 1034, 599–605. https://doi.org/10.17660/actahortic.2014.1034.76

Barnes, J., Whipker, B. E., McCall, I., & Frantz, J. (2014). Characterization of nutrient disorders of Gazania rigens 'Daybreak White'. International symposium on growing media and soilless cultivation, 1034, 459–464. https://doi.org/10.17660/actahortic.2014.1034.56

Jin, Y., Fair, B. A., Whipker, B. E., McCall, I., & Frantz, J. (2014). Characterization of nutrient disorders of Solenostemon scutellarioides 'Lime Light' in silica-sand culture. International symposium on growing media and soilless cultivation, 1034, 607–613. https://doi.org/10.17660/actahortic.2014.1034.77

Barnes, J., Nelson, P., Whipker, B. E., Hesterberg, D., & Shi, W. (2014). Fertilizer Formulation Effect on pH of Fallow Versus Planted Container Substrate. INTERNATIONAL SYMPOSIUM ON GROWING MEDIA AND SOILLESS CULTIVATION, Vol. 1034, pp. 465–469. https://doi.org/10.17660/actahortic.2014.1034.57

Barnes, J., Whipker, B. E., & McCall, I. (2014). Optimizing Fertilizer Rates for Two Cultivars of Graziosa Geraniums. INTERNATIONAL SYMPOSIUM ON GROWING MEDIA AND SOILLESS CULTIVATION, Vol. 1034, pp. 471–476. https://doi.org/10.17660/actahortic.2014.1034.58

Ahmad, I., Whipker, B. E., Dole, J. M., & McCall, I. (2014). Paclobutrazol and ancymidol lower water use of potted ornamental plants and plugs. European Journal of Horticultural Science, 79(6), 318–326.

Barnes, J., Nelson, P., Whipker, B. E., Dickey, D. A., Hesterberg, D., & Shi, W. (2014). Statistical model for describing macronutrient impacts on container substrate pH over time. HortScience, 49(2), 207–214.

Barnes, J., Whipker, B., McCall, I., & Frantz, J. (2013). Characterization of nutrient disorders of Gomphrena globosa 'Las Vegas purple'. International symposium on responsible peatland management and growing media production, 982, 69–74. https://doi.org/10.17660/actahortic.2013.982.6

Krug, B. A., Whipker, B. E., McCall, I., & Frantz, J. (2013). Elevated relative humidity increases the incidence of distorted growth and boron deficiency in bedding plant plugs. HortScience, 48(3), 311–313.

Barnes, J., Whipker, B., Buhler, W., & McCall, I. (2013). Greenhouse and landscape growth of tiger lily cultivars following flurprimidol preplant bulb soaks. HortTechnology, 23(6), 820–822.

Barnes, J., Nelson, P., Fonteno, W. C., Whipker, B., & Jeong, K.-Y. (2013). Impact of Mature Dairy Manure Compost and Water Content on Wettability and Bulk Density in Peat Moss-Perlite Root Substrate. INTERNATIONAL SYMPOSIUM ON RESPONSIBLE PEATLAND MANAGEMENT AND GROWING MEDIA PRODUCTION, Vol. 982, pp. 75–80. https://doi.org/10.17660/actahortic.2013.982.7

Owen, W. G., Jackson, B. E., Fonteno, W. C., & Whipker, B. E. (2013). Pine wood chips as an alternative to perlite: Cultural parameters to consider (c). Proceedings of the international plant propagators' society, 1014, 345–349. https://doi.org/10.17660/actahortic.2013.1014.77

Fair, B. A., Whipker, B., McCall, I., & Buhler, W. (2012). Height control of 'Hot Lips' Hybrid sage to flurprimidol substrate drench. HortTechnology, 22(4), 539–541.

Barnes, J., Whipker, B., McCall, I., & Frantz, J. (2012). Nutrient disorders of 'Evolution' Mealy-cup Sage. HortTechnology, 22(4), 502–508.

Currey, C. J., Lopez, R. G., Krug, B. A., McCall, I., & Whipker, B. E. (2012). Substrate drenches containing flurprimidol suppress height of 'Nellie White' Easter lilies. HortTechnology, 22(2), 164–168.

Davis, K. I., Niedziela, C. E., Jr., Reddy, M. R., Whipker, B. E., & Frantz, J. M. (2011). NUTRIENT DISORDER SYMPTOMOLOGY AND FOLIAR CONCENTRATIONS OF CLERODENDRUM THOMSONIAE. JOURNAL OF PLANT NUTRITION, 34(7), 1079–1086. https://doi.org/10.1080/01904167.2011.555805

Krug, B. A., Whipker, B. E., McCall, I., & Cleveland, B. (2010). GERANIUM LEAF TISSUE NUTRIENT SUFFICIENCY RANGES BY CHRONOLOGICAL AGE. JOURNAL OF PLANT NUTRITION, 33(3), 339–350. https://doi.org/10.1080/01904160903470398

Krug, B. A., Whipker, B. E., Frantz, J., & McCall, I. (2009). Characterization of calcium and boron deficiency and the effects of temporal disruption of calcium and boron supply on pansy, petunia, and gerbera plugs. HortScience, 44(6), 1566–1572.

Krug, B. A., Whipker, B. E., & McCall, I. (2007). Caladium growth control with flurprimidol paclobutrazol, and uniconazole. HortTechnology, 17(3), 368–370.

Gibson, J. L., Williams, A., Whipker, B. E., Nelson, P. V., Dole, J. M., Cleveland, B., & Walls, F. R. (2007). Foliar symptomology and tissue concentrations of nutrient-deficient vegetative strawflower plants. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 38(17-18), 2279–2294. https://doi.org/10.1080/00103620701588379

Whipker, B. E., McCall, I., & Krug, B. A. (2006). Flurprimidol substrate drenches and foliar sprays control growth of 'Blue Champion' exacum. HORTTECHNOLOGY, Vol. 16, pp. 354–356. https://doi.org/10.21273/horttech.16.2.0354

Krug, B. A., Whipker, B. E., & McCall, I. (2006). Hyacinth height bulb soaks of control using preplant flurprimidol. HORTTECHNOLOGY, Vol. 16, pp. 370–375. https://doi.org/10.21273/horttech.16.2.0370

Krug, B. A., Whipker, B. E., McCall, I., & Dole, J. M. (2006). Narcissus response to plant growth regulators. HortTechnology, 16(1), 129–132.

Krug, B. A., Whipker, B. E., McCall, I., & Dole, J. M. (2005). Comparison of flurprimidol to ancymidol, paclobutrazol, and uniconazole for tulip height control. HortTechnology, 15(2), 370–373.

Krug, B. A., Whipker, B. E., McCall, I., & Dole, J. M. (2005). Comparison of flurprimidol to ethephon, paclobutrazol, and uniconazole for hyacinth height control. HortTechnology, 15(4), 872–874.

Krug, B. A., Whipker, B. E., & McCall, I. (2005). Flurprimidol is effective at controlling height of 'Star Gazer' oriental lily. HortTechnology, 15(2), 373–376.

Cavins, T. J., Whipker, B. E., & Fonteno, W. C. (2005). Timing of PourThru affects pH, electrical conductivity, and leachate volume. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 36(11-12), 1573–1581. https://doi.org/10.1081/CSS-200059076

Whipker, B. E. (2004). Calculating pansy production costs. North Carolina Flower Growers' Bulletin, 49(4), 1.

Krug, B., Whipker, B. E., McCall, I., & Dole, J. (2004). Controlling stem topple of pot tulips. North Carolina Flower Growers' Bulletin, 49(1), 14.

Cavins, T. J., Whipker, B. E., & Fonteno, W. C. (2004). Establishment of calibration curves for comparing pour-through and saturated media extract nutrient values. HortScience, 39(7), 1635–1639.

Whipker, B. E., McCall, I., Gibson, J. L., & Cavins, T. J. (2004). Flurprimidol foliar sprays and substrate drenches control growth of 'Pacino' pot sunflowers. HortTechnology, 14(3), 411–414.

Dole, J., McCall, I., & Whipker, B. E. (2004). National Poinsettia Trial Program highlights. North Carolina Flower Growers' Bulletin, 49(1), 1.

Whipker, B. E., & McCall, I. (2003). Comparing paclobutrazols. North Carolina Flower Growers' Bulletin, 48(6), 10.

Whipker, B. E., McCall, I., Gibson, J. L., & Cavins, T. J. (2003). Efficacy of flurprimidol (topflor) on bedding plants. ELEGANT SCIENCE IN FLORICULTURE, pp. 413–418. https://doi.org/10.17660/actahortic.2003.624.58

Gibson, J. L., Cavins, T. J., Greer, L., Whipker, B. E., & Dole, J. M. (2003). Efficacy of plant growth regulators on the growth of Argyranthemum frutescens 'Comet Pink'. ELEGANT SCIENCE IN FLORICULTURE, pp. 213–216. https://doi.org/10.17660/actahortic.2003.624.28

Gibson, J. L., & Whipker, B. E. (2003). Efficacy of plant growth regulators on the growth of vigorous osteospermum cultivars. HortTechnology, 13(1), 132–135.

Krug, B. A., Whipker, B. E., & Peet, M. (2003). FERTCALC -- a fertilizer mixing calculator. North Carolina Flower Growers' Bulletin, 48(6), 8.

Gibson, J. L., & Whipker, B. E. (2003). Ornamental cabbage quality improved by continual fertilization through center-head coloration. HORTSCIENCE, 38(7), 1381–1384. https://doi.org/10.21273/hortsci.38.7.1381

Whipker, B. E. (2003). Ralstonia solanacearum race 3 biovar 2 losses in North Carolina. North Carolina Flower Growers' Bulletin, 48(4), 4.

Gibson, J. L., & Whipker, B. E. (2001). Ornamental cabbage and kale cultivar comparison study: Growth characteristics and response to daminozide and uniconazole foliar sprays. HortTechnology, 11(3), 376–380.

Gibson, J. L., & Whipker, B. E. (2001). Ornamental cabbage and kale growth responses to daminozide, paclobutrazol, and uniconazole. HortTechnology, 11(2), 226–230.

Sellmer, J. C., Adkins, C. R., McCall, I., & Whipker, B. E. (2001). Pampas grass responses to ancymidol, paclobutrazol, and uniconazole substrate drenches. HORTTECHNOLOGY, 11(2), 216–219. https://doi.org/10.21273/horttech.11.2.216

Whipker, B. E., Fonteno, W. C., Cavins, T. J., & Bailey, D. A. (2000). PourThru nutritional monitoring manual (p. 40). Raleigh, N.C. :  North Carolina State University.

Whipker, B. E., Dasoju, S., Dosmann, M. S., & Iles, J. K. (1999). Effect of fertilizer concentration on growth of double impatiens. HortTechnology, 9(3), 425. https://doi.org/10.21273/horttech.9.3.425

Whipker, B. E., & Hammer, P. A. (1998). Comparison of hydroponic solutions for poinsettia nutritional studies. JOURNAL OF PLANT NUTRITION, 21(3), 531–543. https://doi.org/10.1080/01904169809365422

Whipker, B. E. (1998). Cost of producing ornamental cabbage and kale. North Carolina Flower Growers' Bulletin, 43(4), 9.

Whipker, B. E. (1998). Efficacy of A-Rest, Bonzi, and Sumagic on growth of tuberous-rooted dahlias. North Carolina Flower Growers' Bulletin, 43(2), 12.

Whipker, B. E., & Hammer, P. A. (1998). Nutrient uptake in vegetative poinsettias grown with two fertilizer concentrations and two pinching dates. JOURNAL OF PLANT NUTRITION, 21(3), 545–559. https://doi.org/10.1080/01904169809365423

Whipker, B. E., Dasoju, S., Dosmann, M. S., & Iles, J. K. (1998). Research report: F ertilizer rate effects on growth of variegated and green-leaved double Impatiens. North Carolina Flower Growers' Bulletin, 43(5), 15.