Effects of N–P–K deficiency and temperature regime on the growth and development of Lilium longiflorum ‘Nellie White’ during bulb production under phytotron conditions von Niedziela, C.E., Kim, S.H., Nelson, P.V., De Hertogh, A.A.

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Growth and development of Lilium longiflorum ‘Nellie White’ during bulb production under controlled environments von Kim, S.H., Niedziela, C.E., Nelson, P.V., De Hertogh, A.A., Swallow, W.H., Mingis, N.C.

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Influence of bulb packing systems on forcing of Dutch-grown Hippeastrum (Amaryllis) as flowering potted plants in North America von De Hertogh, A.A. (North Carolina State University, Raleigh, NC.), Gallitano, L.B

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Effects of Plant Growth Regulators Applied as Sprays or Media Drenches on Forcing of Dutch-grown Bleeding Heart as a Flowering Potted Plant von Kim, Seung-Hyun, De Hertogh, A.A, Nelson, P.V

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Effects of ancymidol and gibberellins A3 and A4+7 on Tulipa gesneriana L. cv. paul Richter during development in the greenhouse von Shoub, J, De Hertogh, A.A

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Growth and development of Lilium longiflorum 'Nellie White' during bulb production under controlled environments: II. Effects of shifting day/night temperature regimes on scale bul... von Kim, S.H, Niedziela, C.E. Jr, Nelson, P.V, De Hertogh, A.A, Swallow, W.H, Mingis, N.C

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Growth and development of Lilium longiflorum ‘Nellie White’ during bulb production under controlled environments von Kim, S.H., Niedziela, C.E., Nelson, P.V., De Hertogh, A.A., Swallow, W.H., Mingis, N.C.

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Influence of harvest date and 2C storage on floral development of Dutch-grown Astilbe von Pemberton, G.H, De Hertogh, A.A

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The effects of scale wounding of tulip bulbs on ethylene evolution, plant growth and flowering von Kawa, Ludwika, Le Nard, Marcel, De Hertogh, A.A.

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Preemergence herbicide evaluations on selected spring and summer flowering bulbs and perennials von Skroch, W.A. (North Carolina State University, Raleigh, NC.), Catanzaro, C.J, Hertogh, A.A. de, Gallitano, L.B

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Phytotoxicity of herbicides of spring flowering bulbs von Skroch, W.A, Warren, S.L, De Hertogh, A.A

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Bulbous plants of Southern Africa. A guide to their cultivation and propagation von De Hertogh, A.A.

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Possible identification of gibberellins in tulipa gesneriana by gas-liquid chromatography von Aung, L.H., De Hertogh, A.A., Staby, G.L.

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The effects of scale wounding of tulip bulbs on ethylene evolution, plant growth and flowering von Kawa, L., Le Nard, M., de Hertogh, A.A.

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Increases in ethylene and carbon dioxide production by Tupipa gesneriana L. 'Prominence' after completion of the cold-requirement von Prince, T.A, Herner, R.C, De Hertogh, A.A

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Effects of ancymidol and gibberellins A 3 and A 4+7 on Tulipa gesneriana L. cv. Paul Richter during development in the greenhouse von Shoub, J., De Hertogh, A.A.

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Bulbous plants of Southern Africa. A guide to their cultivation and propagation: Niel du Plessis and Graham Duncan, with contributions by Bruce Bayer and watercolours by Elise Bodl... von De Hertogh, A.A.

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THE EFFECTS OF WOUNDING OF TULIP BULB SCALES ON ETHYLENE EVOLUTION AND SUBSEQUENT PLANT GROWTH AND FLOWERING von Kawa, Ludwika, Le Nard, Marcel, De Hertogh, August A.

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Anatomical and growth effects of ethephon on hyacinths and Narcissus during greenhouse forcing von Kamp, Marihelen, de Hertogh, A.A.

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The influence of preplanting dips and postplanting temperatures on root growth and development of nonprecooled tulips, daffodils and hyacinths von Jennings, Nancy T., De Hertogh, A.A.

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