272
Views
2
CrossRef citations to date
0
Altmetric
Original Articles

The effects of N-source, shading and root zone cooling on two Disa hybrids

&
Pages 166-171 | Accepted 04 Jul 2007, Published online: 15 Jan 2013

References

  • Cao , W. and Tibbitts , T. W. 1993 . Study of various NH4 +/NO3 mixtures for enhancing growth of potatoes . J. Plant Nutr. , 16 : 1691 – 1704 .
  • Cao , W. and Tibbitts , T. W. 1994 . Responses of potatoes to solution pH levels with different forms of nitrogen . J. Plant Nutr. , 17 : 109 – 126 .
  • Cooke , Gw . 1982 . Fertilizing for maximum yield, , 3rd edn London : Granada Publishing Ltd .
  • De Kreij , C. , Voogt , W. , Van Den Bos , A. L. and Baas , R. 1999 . Bemestingsadviesbasis substraten, Proefstation voor Bloemisterij en Glasgroente, Naaldwijk, The Netherlands.
  • Du Plessis , N. and Duncan , G. 1989 . Bulbous plants of southern Africa—a guide to their cultivation and propagation. Tafelberg Publishers Ltd, Cape Town.
  • Ganmore-Neumann , R. and Kafkafi , U. 1980 . Root temperature and percentage NO3”/NH4 + effect on tomato plant development. 1. Morphology and growth . Agron. J. , 72 : 758 – 761 .
  • Ganmore-Neumann , R. and Kafkafi , U. 1983 . The effect of root temperature and NO3′/NH4 + ratio on strawberry plants. 1. Growth, flowering and root development . Agron. J. , 75 : 941 – 947 .
  • Jones , T. B. 1997 . Hydroponics, a practical guide for the soilless grower. Florida : St. Lucie Press .
  • Kurzweil , H. 2003 . The orchid tribe Diseae . The Orchid Rev. , 111 : 333 – 339 .
  • Lasa , B. , Frechilla , S. , Aparicio-Tejo , P. M. and Lamsfus , C. 2002 . Role of glutamate dehydrogenase and phosphoenolpyruvate carboxylase activity in ammonium nutrition tolerance in roots . Plant Physiol. Biochem. , 40 : 969 – 976 .
  • Linder , H. P. and Kurzweil , H. 1999 . Orchids of southern Africa. Rotterdam : A.A. Balkema . /Brookfield
  • SAS Institute, Inc. 1999 . SAS/STAT User's Guide, Version 8, 1st printing, Vol. 2. SAS Institute Inc, SAS Campus Drive, Cary, North Carolina.
  • Savvas , D. and Passam , H. 2002 . Hydroponic production of vegetables and ornamentals. Embryo Publications, Athens, Georgia, USA.
  • Schimel , J. P. and Bennett , J. 2004 . Nitrogen mineralization: Challenges of a changing paradigm . Ecology , 85 : 591 – 602 .
  • Sedibe , M. M. , Combrink , N. J.J. and Reinten , E. Y. 2006 . Evaluation of soil-less production systems for small scale production of two Amaranthus species and Swiss chard ( . Beta vulgaris). S. Afr. J. Plant Soil , 23 : 209 – 211 .
  • Shapiro , S. S. and Wilk , M. B. 1965 . An analysis of variance test for normality (complete samples) . Biometrika , 52 : 591 – 611 .
  • Stewart , J. and Hennessey , E. F. 1981 . Orchids of Africa—a select review. Macmillan South Africa (Pty) Ltd., Johannesburg.
  • Terquem , G. L. and Parisot , J. 1991 . Orchids—care and cultivation. Bok Books International, Durban.
  • Truter , J. 1994 . Mainly South African… . S. Afr. Orchid J. , 25 : 142 – 144 .
  • Vogelpoel , L. 1983 . Disa uniflora—its propagation and cultivation. Disa Orchid Society of Southern Africa, Cape Town.
  • Vogelpoel , L. 2001a . Disa breeding in the Western Cape, South Africa. Part 1: An analysis of the key breakthroughs . Orchid Digest , 65 : 52 – 62 .
  • Vogelpoel , L. 2001b . Disa breeding in the Western Cape, South Africa. Part 2: Guidelines for making and evaluating Disa hybrids . Orchid Digest , 65 : 122 – 131 .

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.