Composition of Nutrient Solution According to Soil Texture in Fertigation Culture of Cucumber (Cucumis sativus L.)
2008
Han, S.K. (Chonbuk National University, Jeonju, Republic of Korea) | Eun, J.S. (Chonbuk National University, Jeonju, Republic of Korea) | Kim, H.C. (Wonkwang University, Iksan, Republic of Korea) | Lee, Y.B. (University of Seoul, Seoul, Republic of Korea), E-mail: [email protected] | Bae, J.H. (Wonkwang University, Iksan, Republic of Korea)
To determine suitable composition of nutrient solution according to soil textures in fertigation culture of cucumber using three strengths (S) of Yamasaki cucumber recipe, chemical changes of soil, growth characteristics and yield of cucumber were investigated. Electric conductivity of drainage solution was risen in all treatments, pH of loam soil was generally optimum level and that of sandy soil was high level. Photosynthetic rate in loam soil supplied the 1/2 S and transpiration rate in sandy soil supplied the 1.0 S were most low. Diffusive resistance in sandy soil supplied the 1.0 S was high. Chlorophyll contents was higher concentrations by the kinds of soil. Amount of drainage solution in sandy loam soil supplied the 1/2 S and loam soil supplied the 1.0 S were most much and little, respectively. Water absorption rate was the opposition to amount of drainage solution. Nutrient contents in soil except calcium were most high in the 1.0 S by the kinds of soil. Nutrient contents in leaves, nitrogen in sandy soil supplied 1.0 S, phosphorus in loam soil supplied 1/2 S, potassium in two soil supplied 1.0 S, calcium in loam supplied 1/2 S and sandy loam soil supplied 1.0 S, magnesium in loam soil supplied the 1/2 S was high. The growth and yield of fruit were more in loam than in sandy loam soil. Therefore, the suitable compositions of macro-nutrients for fertigation culture of cucumber were determined in loam and sandy loam soils as follows : In loam soil, they were NO₃-N 12.3, NH₄-N 1.0, P 3.0, K 5.9, Ca 5.7, Mg 3.5 meㆍL-¹, whereas in sandy loam soil NO₃-N 11.7, NH₄-N 1.0, P 3.0, K 5.9, Ca 4.9, Mg 3.2 meㆍL-¹.
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