Browse > Article

Optimum Irrigation Interval for the Growth of Phalaenopsis Hybrid Seedling in the Aeroponic System  

Lee, Dong-Soo (Floriculture Research Division, National Institute of Horticultural & Herbal Science)
Kwon, Oh-Keun (Floriculture Research Division, National Institute of Horticultural & Herbal Science)
Lee, Yong-Beom (Department of Environmental Horticulture, University of Seoul)
Yae, Byeong-Woo (Floriculture Research Division, National Institute of Horticultural & Herbal Science)
Lee, Young-Ran (Floriculture Research Division, National Institute of Horticultural & Herbal Science)
Publication Information
Journal of Bio-Environment Control / v.19, no.4, 2010 , pp. 234-239 More about this Journal
Abstract
The irrigation interval and time for the supply of nutrient and water to the plant is important in the aeroponic system. This study was conducted to investigate the effect of irrigation interval on the growth of Phalaenopsis hybrid seedlings in the aeroponic system. Young bare-root plants (four leaves, 16 g in fresh weight) were used for this experiment. The composition of nutrient solution was, in $me{\cdot}L^{-1}$, 9 N, 3 P, 4 K, 4 Ca and 2 Mg. The electrical conductivity (EC) and pH of nutrient solution used was $1.2\;dS{\cdot}m^{-1}$ and 5.8, respectively. Irrigation intervals were 10, 20, 30, 40, and 50 minute and each irrigation time was 10 minute. The total fresh and dry weight, the number of branched roots, and relative growth rate at the 20 and 30 min. was greater than 10, 40, 50 min. interval. Especially, the fresh weight of roots at 30 min. interval was the highest. Leaf length was the highest at 30 min. interval but there was no difference in leaf width. The amount of water consumed for a month was 0.71 L per plant and it was reduced with increasing irrigation interval. There was no difference in the amount of consumed mineral contents for 15 days except for potassium. Potassium absorbed was the highest at 30 min. irrigation interval. As a result, the optimum irrigation interval was 30 min for the production of Phalaenopsis hybrid seedlings in the aeroponic system.
Keywords
aerial root; $CO_2$ uptake; fresh weight; nutrient; relative growth rate;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Motomura, H., O. Endo, A. Kagawa, and T. Yukawa. 2008. Carbon isotope ratios and the variation in the diurnal pattern of malate accumulation in aerial roots of CAM species of Phalaenopsis (Orchidaceae). Photosynthetica 46:531-536.   DOI   ScienceOn
2 U. S. Department of Agriculture. 2005. Floriculture crops 2004 summary. Agr. Stat. Board, Wash., D. C.
3 Warren, C.R. and M.A. Adams. 2005. What determines interspecific variation in relative growth rate of Eucalyptus seedlings. Oecologia. 144:373-381.   DOI   ScienceOn
4 Yoneda K, N. Suzuki, and I. Hasegawa. 1999. Effects of macroelement concentrations on growth, flowering, and nutrient absorption in an Odontoglossum hybrid. Scientia Horticulturae. 80:259-265.   DOI   ScienceOn
5 Patterson, D.T., C.R. Meyer, and P.C. Quimby. 1978. Effects of irradiance on relative growth rates, net assimilation rates, and leaf area partitioning in cotton and three associated weeds. Plant Physiol. 62:14-17.   DOI   ScienceOn
6 Jin, X., H. Fukui, and S. Ichihashi. 2004. Effects of ionic composition and absorption from nutrient solutions on the growth of Doritaenopsis. J. Jpn. Soc. Hort. Sci. 73:280-286.   DOI   ScienceOn
7 MAF. 2006. 05'Flower cultivation the present state. pp. 35-40.
8 Ota, K., K. Morioka, and Y. Yamamoto. 1991. Effects of leaf age, inflorescence, temperature, light intensity and moisture conditions on CAM photosynthesis in Phalaenopsis. J. Jpn. Sot. Hort. Sci. 60: 125-132.   DOI
9 Poorter, H. 1993. Interspecific variation in the growth response of plants to an elevated ambient $CO_{2}$ concentration. Vegetatio. 104:77-97.   DOI
10 Rabas, A.R. and C.E. Martin. 2003. Movement of water from old to young leaves in three species of succulents. Ann. Bot. 92:1-8.   DOI   ScienceOn
11 Burns, I.G., R.L. Walker, and J. Moorby. 1997. How do nutrients drive growth? Plant and Soil 196:321-325.   DOI   ScienceOn
12 U. S. Department of Agriculture. 2003. Importation of Moth Orchids (Phalaenopsis spp.) in approved growing media from Taiwan. Final Environment Assessment, December 2003. pp.1-27.
13 Augustus, M. and L. Knudson. 1957. The role of velamen of the aerial roots of orchids. Bot. Gaz. 119(2):78-87.   DOI   ScienceOn
14 Burns, I.G. 1992. Influence of plant nutrient concentration on growth rate: Use of a nutrient interruption technique to determine critical concentrations of N, P and K in young plants. Plant and Soil 142:221-233.   DOI   ScienceOn
15 Chung, S.J., B.S. Lee, and K.B. Ahn. 1997. Effect of cultural system and ionic strength of nutrient solution on the growth of dendrobium (Dendrobium phalaenopsis) seedlings. J. Bio. Fac. Env. 6:284-291.
16 Cui, Y.Y., E.J. Han, and K.Y. Paek. 2000. Water stress and culture medium affect leaf gas exchange of Phalaenopsis hybrid in hydroponic culture. Kor. J. Hort. Sci. & Technol. 18(5):728 (Abstr.).
17 Engard, C.J. 1944. Morphological identity of the velamen and exodermis in orchids. Bot. Gaz. 4:457-462.
18 Hew, C.S., L.Y. Lim, and C.M. Low. 1993. Nitrogen uptake by tropical orchids. Environ. Expt. Bot. 33:273-281.   DOI   ScienceOn
19 Ikeda, H. and T. Emoto. 1973. Effect of temperature on vegetative growth in four ecotypes of Paspalum distichum L. Proc. Crop. Sci. Soc. Jpn. 42:131-134.   DOI
20 Hunt, R. and J.H.C. Cornelissen. 1997. Components of relative growth rate and their interrelations in 59 temperate plant species. New Phytol. 135:395-417.   DOI   ScienceOn