Browse > Article
http://dx.doi.org/10.12791/KSBEC.2013.22.3.193

Impact of Compositions and Concentrations of Fertilizer Solution on Growth of Lettuce and Changes in Chemical Properties of Root Media  

Shin, Bo Kyuong (Department of Horticulture, College of Agriculture, Chungnam National University)
Son, Jung Eek (Department of Plant Science and Research Institute for Agriculture and Life Science, Seoul National University)
Choi, Jong Myung (Department of Horticulture, College of Agriculture, Chungnam National University)
Publication Information
Journal of Bio-Environment Control / v.22, no.3, 2013 , pp. 193-201 More about this Journal
Abstract
This research was conducted to investigate the influence of compositions and concentrations of fertilizer solution on growth of lettuce as well as changes in chemical properties of root media. To achieve this three kinds of fertilizers such as acidic (AF), neutral (NF), and alkaline fertilizer (BF) were formulated and applied with the concentrations of 100 or $200mg{\cdot}L^{-1}$ based on nitrogen concentrations. The growth characteristics were investigated 10 weeks after transplant and the analysis of soil solution for chemical characteristics were conducted in every week. The BF was more effective than AF in crop growth of blue leaf lettuce 10 weeks after transplant and the treatment of BF200 showed the heaviest fresh and dry weights among all treatments tested. The treatment of BF also showed the highest growth followed by those of NF and AF in growth of red leaf lettuce, but the growth in treatments of $100mg{\cdot}L^{-1}$ were higher than those of $200mg{\cdot}L^{-1}$ in the three kinds of fertilizers. The differences among treatments in soil solution pH became larger from week 6. The pH in the treatment of $200mg{\cdot}L^{-1}$ was lower than that of $100mg{\cdot}L^{-1}$ when AF was applied, but the treatment of $200mg{\cdot}L^{-1}$ showed higher pH than that of $100mg{\cdot}L^{-1}$ in case of BF. The electrical conductivity of soil solution in treatments of $200mg{\cdot}L^{-1}$ were 0.2 to 0.4 unit higher than those of $100mg{\cdot}L^{-1}$ when those are measured as $dS{\cdot}m^{-1}$ in three kinds of fertilizers. The $NH_4$ concentrations were higher in the treatments of AF than those of BF, but the concentrations of Ca, Mg and $NO_3$ were vice verse. The concentrations of $PO_4^{-3}$ were the highest in the treatments of AF followed by those of NF and BF when three kinds of fertilizers were applied with equal nitrogen concentrations. The differences of nutrient concentrations in soil solution of root media were influenced by composition of fertigation solution and varied soil solution pH.
Keywords
concentration; EC; fertilizer composition; pH;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Choi, J.M., I.Y. Kim, and B.K. Kim. 2009. Root Substrates. Hackyesa. Daejeon, Korea.
2 Argo, W.R. and J.A. Biernbaum. 1996. The effect of lime, irrigation- water source, and water-soluble fertilizer on rootzone pH, electrical conductivity, and macronutrient management of container root media with impatiens. J. Amer. Soc. Hort. Sci. 121:442-452.
3 Argo, W.R. 1998. Root medium chemical properties. Hort- Technology 8:486-494.
4 Choi, J.M. 1994. Increased nutrient uptake efficiency by controlling nutrient release in floral crops. PhD Diss., North Carolina State Univ., Raleigh. NC, USA.
5 Hamrick, D. 2003. Ball red book: Crop production. 17th ed. Ball Publishing, Batavia. IL.
6 Miller, C.T., N.S. Mattson, and W.B. Miller. 2011. Fertilizer composition, concentration, and irrigation method affect growth and development of Oxalis regnellii and O. triangu laris. HortScience 46:1110-1115.
7 Hoagland, D.R. and D.I. Arnon. 1950. The water culture method for growing plants without soil. University of California Agricultural Experiment Station, Circular 347.
8 Lim, S.O. 2005. Fertilizer: Theory and practice in nutrient supply. Ilsin-sa. Seoul, Korea.
9 Lindsay, W.L. 2001. Chemical equilibria in soils. The Blackburn Press. Caldwell. NJ.
10 Nelson, P.V. 2003. Greenhouse operation and management. 6th ed. Prentice Hall, Englewood Cliffs, NJ.
11 Shin, B.K., J.E. Son, and J.M. Choi. 2012. Physico.chemical properties of inorganic materials currently used as root medium components for crop production in Korean plant factories. J. Bio-Env. Con. 21:336-342.   DOI
12 Silber, A. 2008. Chemical characteristics of soilless media. p. 210-244. In M. Raviv and J.H. Lieth (eds.). Soilless culture; Theory and practice. Elsevier, New York.
13 Styer, R.C. and D.S. Koranski. 1997. Plug & transplant production: a grower's guide. Ball Publishing. Batavia. IL.
14 Taylor, M.D., P.V. Nelson, and J.M. Frantz. 2008. Substrate acidification by geranium: temperature effects. J. Amer. Soc. Hort. Sci. 133:508-514.