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Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

Scientific Papers Series B Horticulture

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Figure 5. Content of total soluble saltsCONCLUSIONSThe best substratum for Thuja Occidentalis“Columna” was represented by ground celery,ground leaf, peat and sand 1:1:1:0,5(substratum 1) with complex fertilizer (NPK)15:15:15 applied 5 kg/mc before planting incontainers.Substratum 1, fertilized before planting incontainers leaded to significant growth. Coïcsolution applied during vegetation had alsoconsiderable influence on plants growth.Substratum and fertilization didn’t have animportant influence on trunk thickness ofplants, these being dependent on morphologicalcharacteristics of the variety.The best behavior of the plants was at pH=7,4in substratum 1. The total content of saltsincrease in both substratum, because offertilization but remains in normal limits.Total content in nitrogen (N) showed a goodprovisioning of substratum. The values ofphosphor (P) were temperate and potassium(K) diminished by plants consumption, butremained at good and very good values.The biggest values of nitrogen (N) from leafshad a considerable correlation with the biggestheight of plants.The values of P and K showed a goodprovisioning of plants, the biggest valuesregistered at plants from substratum 1 fertilizedwith NPK before planting.REFERENCESCharpentier S., 1985. Equilibres chimiques etprecipitations dans les solutions nutritives. P.H.M.Rev. Hortic. 258, p. 19-24.Davidescu D., Davidescu Velicica, 1992. Agrochimiehorticola, Ed. Academiei Române, Bucuresti.Krüssman S., 1981. Die Baumschule, Verlag Paul Parey,Berlin.314

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