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http://dx.doi.org/10.5338/KJEA.2006.25.1.064

Effect of Fertigation Concentration on Yield of Tomato and Salts Accumulation in Soils with Different EC Level Under PE Film House  

Lee, Seong-Tae (Gyeongnam-do Agricultural Research and Extension Services)
Kim, Yeong-Bong (Gyeongnam-do Agricultural Research and Extension Services)
Lee, Young-Han (Gyeongnam-do Agricultural Research and Extension Services)
Lee, Sang-Dae (Gyeongnam-do Agricultural Research and Extension Services)
Publication Information
Korean Journal of Environmental Agriculture / v.25, no.1, 2006 , pp. 64-70 More about this Journal
Abstract
This study was conducted to investigate the concentration of fertigation for optimum yield and soil management of tomato cultivation in soils with different Electrical conductivity (EC) level under PE film house. The EC levels of soil were adjusted to 1.4, 3.0 and 5.4 dS/m and fertigation concentrations were supplied with 0.0 (groundwater), 1.0, 2.0 and 3.0 dS/m, respectively. When the concentration of fertigation was supplied over 3.0 dS/m to soil with EC 1.4 dS/m, the concentrations of $NO_3-N,\;avail.-P_2O_5$, and exchangeable K in soil were increased after the experiment. When fertigation concentration was supplied over 2.0 and 1.0 ds/m to soil with EC 3.0 and 5.4 dS/m respectively, the nutrient were also accumulated in the soil. Thus, the optimum concentrations of fertigation for optimum yield and soil management for tomato cultivation were recommended $1.0{\sim}2.0dS/m$, 1.0 dS/m and ground water (0.0 dS/m) to soils with EC 1.4, 3.0 and 5.4 dS/m, respectively. The fruit weight marketability and marketable yield of tomato were not significant among the treatments at 5% level by LSD. The concentrations of T-N, $P_2O_5\;and\;K_2O$ in tomato leaf were increased with increasing of fertigation concentration whereas the concentrations of CaO and MgO decreased with increasing of fertigation concentration.
Keywords
fertigation concentration; yield and nutrient; tomato; soil EC;
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