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KMID : 0903619910320040425
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Journal of the Korean Society for Horticultural Science
1991 Volume.32 No. 4 p.425 ~ p.433
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Basic Studies on the Development Hydroponic System of Water Dropwort, Oenanthe Stolonifera DC .
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Abstract
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This study was carried out to clarify the optimal composition of macronutrients in the water culture solution of water dropwort (Oenanthe stolonifera DC.). The optimal macronutrient composition based on the tissue analysis of O. stolonifera grown tinder favorable condition was 3.5me/L of PO₄-P, 3.5me/ℓ of K, 2me/ℓ of Ca and 1me/ℓ of Mg. The optimal macronutrient composition based on n/w method was 3me/ℓ of YOB-Y, 4me/L of K, 2me/ℓ of Ca and 1 me/ℓ of Mg. When KN03, Ca(NO₃)₂, NH₄H₂PO₄ and MgSO₄ were used as salt source, additional NH₄-N had a negative effect on the stability of EC and pH of culture solution and the growth. Comparative experiment among 4 types of culture solution exhibited superior performance in the culture made by author in respect to the growth and stability of EC, pH and ionic balance. Data from tissue analysis suggested that 2me/ℓ of K should be supplemented to culture solution in summer. It is conclude3 that macronutrient composition of 1mmole/ℓ of Ca(NO₃)₂, 4mmole/ℓ of KNO₃ (6mmole/ℓ in Spring and summer), 1mmole/ℓ of NH₄H₂PO₄ and 0.5mmole/ℓ of MgSO₄ is appropriate to the water culture of O. stolonifera DC.
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