Effect of fertilization level of nitrogen and potassium on flavonid compounds content in leaves of maidenhair tree (Ginkgo biloba L.)
1993
Korszun, S. | Hoffmann, M. (Akademia Rolnicza, Poznan (Poland)) | Ellnain-Wojtaszek, M. | Kowalewski, Z. (Akademia Medyczna, Poznan (Poland). Katedra i Zaklad Farmakognozji)
Leaves of maidenhear tree came from the experimental field in Poznan Agricultural University. In the field cultivation various levels of N and K fertilization were used when sufficient amount P was available to plants. The highest content of flavonid compounds (1.47 percent) was found when double doses N and K were used. In this treatment the flavonid compounds content was 36.1 percent higher than in the plants from the check, which were not fertilized. The analyses of chromatographies of the flavonids received from various treatments showed no qualitative differences
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