Brian E Whipker

Spectral Discrimination of Macronutrient Deficiencies in Greenhouse Grown Flue-Cured Tobacco

PLANTS-BASEL, 12(2).

Hyperspectral Imaging With Machine Learning to Differentiate Cultivars, Growth Stages, Flowers, and Leaves of Industrial Hemp (Cannabis sativa L.)

FRONTIERS IN PLANT SCIENCE, 12.

Impact of Macronutrient Fertility on Mineral Uptake and Growth of Lactuca sativa 'Salanova Green' in a Hydroponic System

HORTICULTURAE, 8(11).

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.

Customizing the leaf tissue nutrient ranges for blue and pink hydrangeas

Landis, H., Hicks, K., McCall, I., Henry, J. B., & Whipker, B. E. (2021, July 7). JOURNAL OF PLANT NUTRITION.

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.

Industrial hemp vegetative growth affected by substrate composition

III INTERNATIONAL SYMPOSIUM ON GROWING MEDIA, COMPOSTING AND SUBSTRATE ANALYSIS, Vol. 1305, pp. 83–89.

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.

The Impacts of Micronutrient Fertility on the Mineral Uptake and Growth of Brassica carinata

AGRICULTURE-BASEL, 11(3), 221.

Characterization of Nutrient Disorders and Impacts on Chlorophyll and Anthocyanin Concentration of Brassica rapa var. Chinensis

AGRICULTURE-BASEL, 10(10).

Impact of Phosphorus on Cannabis sativa Reproduction, Cannabinoids, and Terpenes

APPLIED SCIENCES-BASEL, 10(21).

Liming Requirements of Greenhouse Peat-based Substrates Amended with Pine Wood Chips as a Perlite Alternative

HORTTECHNOLOGY, 30(2), 219–230.

Measures of Canopy Structure from Low-Cost UAS for Monitoring Crop Nutrient Status

DRONES, 4(3).

Night interruption lighting equally effective as daylength extension in retaining the vegetative state of Cannabis mother plants

CROP FORAGE & TURFGRASS MANAGEMENT, 6(1).

Restricting Phosphorous Can Manage Growth and Development of Containerized Sweet Basil, Dill, Parsley, and Sage

HORTSCIENCE, 55(11), 1722–1729.

Characterization of Nutrient Disorders of Cannabis sativa

APPLIED SCIENCES-BASEL, 9(20).

Expanding Leaf Tissue Nutrient Survey Ranges for Greenhouse Cannabidiol-Hemp

CROP FORAGE & TURFGRASS MANAGEMENT, 5(1).

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.

Nutrient Disorders o Burley and Flue-Cured Tobacco: Part 1-Macronutrient Deficiencies

CROP FORAGE & TURFGRASS MANAGEMENT, 4(1).

Nutrient Disorders of Burley and Flue-Cured Tobacco: Part 2-Micronutrient Disorders

CROP FORAGE & TURFGRASS MANAGEMENT, 4(1).

Phosphorus Restriction as an Alternative to Chemical Plant Growth Retardants in Angelonia and New Guinea Impatiens

HORTTECHNOLOGY, 28(2), 136–142.

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.

Growth Response of Herbaceous Ornamentals to Phosphorus Fertilization

HORTSCIENCE, 52(10), 1362–1367.

Modeling impact of nitrogen carrier and concentration on root substrate pH

JOURNAL OF PLANT NUTRITION, 40(15), 2101–2108.

Growth control of 'Imperial Dark Blue' Plumbago with ethephon, flurprimidol, and paclobutrazol substrate drenches

HortTechnology, 26(4), 493–496.

Nutrient disorders of Dianthus 'Bouquet Purple'

JOURNAL OF PLANT NUTRITION, 39(13), 1950–1957.

Paclobutrazol drench activity not affected in sphagnum peat-based substrates amended with pine wood chip aggregates

HortTechnology, 26(2), 156–163.

Pine wood chips as an alternative to perlite in greenhouse substrates: Nitrogen requirements

HortTechnology, 26(2), 199–205.

Characterization of nutrient disorders of Abutilon x hybridum 'Bella Yellow'

International conference and exhibition on soilless culture, 1062, 29–37.

Characterization of nutrient disorders of Dahlia x hybrida 'Maxi Morelia'

International conference and exhibition on soilless culture, 1062, 39–47.

Characterization of nutrient disorders of Fuchsia x hybrida 'Gartenmeister Bonstedt'

International conference and exhibition on soilless culture, 1062, 49–57.

Characterization of nutrient disorders of Senecio cineraria 'Silver Mist'

International conference and exhibition on soilless culture, 1062, 59–66.

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.

Paclobutrazol or Ancymidol Effects on Postharvest Performance of Potted Ornamental Plants and Plugs

HORTSCIENCE, 50(9), 1370–1374.

Paclobutrazol or uniconazole effects on ethylene sensitivity of potted ornamental plants and plugs

SCIENTIA HORTICULTURAE, 192, 350–356.

Plant Growth Regulator Drenches Suppress Foliage and Inflorescence Height of 'Leia' Pineapple Lily

Carlson, A. S., Dole, J. M., & Whipker, B. E. (2015, February). HORTTECHNOLOGY, Vol. 25, pp. 105–109.

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.

Characterization of nutrient disorders of Gazania rigens 'Daybreak White'

International symposium on growing media and soilless cultivation, 1034, 459–464.

Characterization of nutrient disorders of Solenostemon scutellarioides 'Lime Light' in silica-sand culture

International symposium on growing media and soilless cultivation, 1034, 607–613.

Fertilizer Formulation Effect on pH of Fallow Versus Planted Container Substrate

INTERNATIONAL SYMPOSIUM ON GROWING MEDIA AND SOILLESS CULTIVATION, Vol. 1034, pp. 465–469.

Optimizing Fertilizer Rates for Two Cultivars of Graziosa Geraniums

INTERNATIONAL SYMPOSIUM ON GROWING MEDIA AND SOILLESS CULTIVATION, Vol. 1034, pp. 471–476.

Paclobutrazol and ancymidol lower water use of potted ornamental plants and plugs

European Journal of Horticultural Science, 79(6), 318–326.

Statistical model for describing macronutrient impacts on container substrate pH over time

HortScience, 49(2), 207–214.

Characterization of nutrient disorders of Gomphrena globosa 'Las Vegas purple'

International symposium on responsible peatland management and growing media production, 982, 69–74.

Elevated relative humidity increases the incidence of distorted growth and boron deficiency in bedding plant plugs

HortScience, 48(3), 311–313.

Greenhouse and landscape growth of tiger lily cultivars following flurprimidol preplant bulb soaks

HortTechnology, 23(6), 820–822.

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.

Pine wood chips as an alternative to perlite: Cultural parameters to consider (c)

Proceedings of the international plant propagators' society, 1014, 345–349.

Height control of 'Hot Lips' Hybrid sage to flurprimidol substrate drench

HortTechnology, 22(4), 539–541.

Nutrient disorders of 'Evolution' Mealy-cup Sage

HortTechnology, 22(4), 502–508.

Substrate drenches containing flurprimidol suppress height of 'Nellie White' Easter lilies

HortTechnology, 22(2), 164–168.

NUTRIENT DISORDER SYMPTOMOLOGY AND FOLIAR CONCENTRATIONS OF CLERODENDRUM THOMSONIAE

JOURNAL OF PLANT NUTRITION, 34(7), 1079–1086.

GERANIUM LEAF TISSUE NUTRIENT SUFFICIENCY RANGES BY CHRONOLOGICAL AGE

JOURNAL OF PLANT NUTRITION, 33(3), 339–350.

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.

Caladium growth control with flurprimidol paclobutrazol, and uniconazole

HortTechnology, 17(3), 368–370.

Foliar symptomology and tissue concentrations of nutrient-deficient vegetative strawflower plants

COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 38(17-18), 2279–2294.

Flurprimidol substrate drenches and foliar sprays control growth of 'Blue Champion' exacum

HORTTECHNOLOGY, Vol. 16, pp. 354–356.

Hyacinth height bulb soaks of control using preplant flurprimidol

HORTTECHNOLOGY, Vol. 16, pp. 370–375.

Narcissus response to plant growth regulators

HortTechnology, 16(1), 129–132.

Comparison of flurprimidol to ancymidol, paclobutrazol, and uniconazole for tulip height control

HortTechnology, 15(2), 370–373.

Comparison of flurprimidol to ethephon, paclobutrazol, and uniconazole for hyacinth height control

HortTechnology, 15(4), 872–874.

Flurprimidol is effective at controlling height of 'Star Gazer' oriental lily

HortTechnology, 15(2), 373–376.

Timing of PourThru affects pH, electrical conductivity, and leachate volume

COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS, 36(11-12), 1573–1581.

Calculating pansy production costs

North Carolina Flower Growers' Bulletin, 49(4), 1.

Controlling stem topple of pot tulips

North Carolina Flower Growers' Bulletin, 49(1), 14.

Establishment of calibration curves for comparing pour-through and saturated media extract nutrient values

HortScience, 39(7), 1635–1639.

Flurprimidol foliar sprays and substrate drenches control growth of 'Pacino' pot sunflowers

HortTechnology, 14(3), 411–414.

National Poinsettia Trial Program highlights

North Carolina Flower Growers' Bulletin, 49(1), 1.

Comparing paclobutrazols

North Carolina Flower Growers' Bulletin, 48(6), 10.

Efficacy of flurprimidol (topflor) on bedding plants

ELEGANT SCIENCE IN FLORICULTURE, pp. 413–418.

Efficacy of plant growth regulators on the growth of Argyranthemum frutescens 'Comet Pink'

ELEGANT SCIENCE IN FLORICULTURE, pp. 213–216.

Efficacy of plant growth regulators on the growth of vigorous osteospermum cultivars

HortTechnology, 13(1), 132–135.

FERTCALC -- a fertilizer mixing calculator

North Carolina Flower Growers' Bulletin, 48(6), 8.

Ornamental cabbage quality improved by continual fertilization through center-head coloration

HORTSCIENCE, 38(7), 1381–1384.

Ralstonia solanacearum race 3 biovar 2 losses in North Carolina

North Carolina Flower Growers' Bulletin, 48(4), 4.

Ornamental cabbage and kale cultivar comparison study: Growth characteristics and response to daminozide and uniconazole foliar sprays

HortTechnology, 11(3), 376–380.

Ornamental cabbage and kale growth responses to daminozide, paclobutrazol, and uniconazole

HortTechnology, 11(2), 226–230.

Pampas grass responses to ancymidol, paclobutrazol, and uniconazole substrate drenches

HORTTECHNOLOGY, 11(2), 216–219.

PourThru nutritional monitoring manual

(p. 40). Raleigh, N.C. : North Carolina State University.

Effect of fertilizer concentration on growth of double impatiens

HortTechnology, 9(3), 425.

Comparison of hydroponic solutions for poinsettia nutritional studies

JOURNAL OF PLANT NUTRITION, 21(3), 531–543.

Cost of producing ornamental cabbage and kale

North Carolina Flower Growers' Bulletin, 43(4), 9.

Efficacy of A-Rest, Bonzi, and Sumagic on growth of tuberous-rooted dahlias

North Carolina Flower Growers' Bulletin, 43(2), 12.

Nutrient uptake in vegetative poinsettias grown with two fertilizer concentrations and two pinching dates

JOURNAL OF PLANT NUTRITION, 21(3), 545–559.

Research report: F ertilizer rate effects on growth of variegated and green-leaved double Impatiens

North Carolina Flower Growers' Bulletin, 43(5), 15.