Folia Horticulturae

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The effect of soil material and nitrogen fertilisation on growth and development of goldenrod (Solidago virga-aurea L.)

Barbara Kołodziej

Department of Industrial and Medicinal Plants
Agricultural University
Akademicka 15, 20-950 Lublin, Poland

Goldenrod, a perennial medicinal plant (Asteraceae family), is gathered mainly from nature. Herba Solidaginis, containing flavonoids and leiocarposide, is considered to be diuretic, anti-inflammatory, antiphlogistic and non-specific immunostimulant. In Poland annual demand on this material is high (100 t) and natural resources are continuously decreasing. The aim of a pot experiment was to determine the effect of different doses of nitrogen fertilisation on three soil materials (sandy, silty, and organic - peat moss) on the growth, development, and yield of goldenrod. The best parameters of growth and the highest yield of the herb (independently of fertilisation) were obtained on organic soil material, and the lowest on a sandy one. The highest content of biological active compounds, however, was found in the herb grown on sandy soil material (on average: leiocarposide - 784 mg kg-1, flavonoids - 1.75%). A significantly lower content of leiocarposide was found on silty, and especially organic, material (635 and 613 mg kg-1). In the case of flavonoids a significantly lower content was observed on silty material, while it was similar on the remaining soil materials. Independently of the soil material, along with increasing nitrogen fertilisation, an increase was observed in yields and active compounds (both flavonoids and leiocarposide) accumulation.

Kołodziej B., 2002. The effect of soil material and nitrogen fertilisation on growth and development of goldenrod (Solidago virga-aurea L.). Folia Horticulturae 14/1: 187-193.