REFERENCES
- Ohyama , T , Ikarashi , T and Baba , A . 1985 . Nitrogen accumulation in the roots of tulip plants (Tulip gesneriana) . Soil Sci. and Plant Nut. , 31 : 581 – 588 .
- Wichailux , O . Patumma . Proceedings of Thai ormental plant to international markets seminar . 26 March . pp. 45 – 9 . Bangkok : Department of Agricultural Extenstion . 2005 (in Thai)
- Ohyama , T , Ito , M Kobayashi , K . 1991 . Analytical procedure of N, P, K contents in plants and manure materials using H2SO4–H2O2Kjeldahl digestion method . Bull. Fac. Agric., Niigata Univ. , 43 : 111 – 120 .
- Ruamrungsri , S and Apavatjrut , P . Effect of nutrient deficiency on the growth and development of Curcuma alismatifoliaGagnep . Proceedings of the 3rd Symposium on the family Zingiberaceae . pp. 98 – 04 . Thailand : Khon Kaen .
- Ohyama , T , Tewari , K Abdel-Latif , S . 2004 . Direct analysis of 15N abundance of Kjeldahl digested solution by emission spectrometry . Bull. Fac. Agric., Niigata Univ. , 57 : 33 – 40 .
- Ohyama , T and Kumazawa , K . Assimilation and transport of nitrogenous compounds originating from 15N2fixation and 15NO3absorption . Proceedings of the third international conference . pp. 329 – 35 . London : Academic press .
- Roh , MS and Lawson , RH . 1993 . Curcuma. Growers Notebook. A step-by-step guide to success . Greenhouse Manager , 12 : 10
- Zhang , JX , Huang , JP and Lin , LM . 1995 . A new favorite in flower markets: cultivation technique and regulation of flowering of Curcuma alismatifolia . Taiwan Flower Industry , 92 : 36 – 40 .
- Hagiladi , A , Umiel , N and Gilad , Z . 1997 . Curcuma alismatifoliaI. Plant morphology and the effect of tuberous root number on flowering date and yield of inflorescences . Acta Hort. , 430 : 747 – 753 .
- Ruamrungsri , S , Ruamrungsri , S , Ikarashi , T and Ohyama , T . 1997 . Uptake, translocation and fractionation of nitrogen in Narcissusorgans by using 15N . Acta Hort. , 430 : 73 – 78 .
- Ruamrungsri , S , Ohtake , N , Sueyoshi , K , Suwanthada , C , Apavatjrut , P and Ohyama , T . 2001 . Changes in nitrogenous compounds, carbohydrates and abscisic acid in Curcuma alismatifoliaGagnep. during dormancy . J. Hort. Sci. Biotech. , 76 : 48 – 51 .
- Ruamrungsri , S , Ohtake , N , Sueyoshi , K , Suwanthada , C , Ohyama , T and Apavatjrut , P . 2005 . Effect of nitrogen and potassium on growth and development of Curcuma alismatifoliaGagnep . Acta Hort. , 673 : 443 – 448 .