V maloparcelových pokusoch sa pestoval ľubovník bodkovaný (Hypericum perforatum L. var.angustifolium DC) na ľahkej pôde a na slnečnej lokalite v Bratislave. V 1. roku vegetácie sa vňaťnezbierala. Zber sa robil v 2. a 3. roku vegetácie, neskôr rastliny vyhynuli. V priebehu vegetačnéhoroka bolo možné urobiť spravidla tri zbery, pričom I. zber sa robil tesne pred kvetom alebo vo fázenástupu kvitnutia a zostrihali sa len zakvitnuté vrcholové časti. Úroda suchej vňate kolísalav závislosti od vegetačného roka, podmienok stanovišťa, veku rastlín a termínu I. zberu. Z dvojroč-ného porastu sa získala celoročná úroda 8,12–14,87 kg.10 m -2 a z trojročného porastu okolo 8 kg. 10 m -2 suchej vňate. Obsah hypericínu v získanej droge Hyperici herba kolísal od 0,06 do 0,13%a 60 % etanolom sa extrahovalo 21,7 –27,9 % látok.
Experiments in small plots were performed to cultivate Hypericum perforatum L. var. angustifoliumDC on light soil and at a sunny location in Bratislava. In the 1 st year of vegetation the herb was notharvested. Harvests were made in the 2 nd and 3 rd years of vegetation and later plants died. In thecourse of the vegetation year it was possible to carry out three harvests on the rule. The 1 st one wasmade just prior to blooming or at the stage of the onset of blooming, and only the blooming top partswere collected. The yield of the dry tops varied in dependence on the vegetation year, conditions ofthe location, age of the plants, and the date of the 1 st harvest. From the two-years old plants,a whole-year yield of 8.12–14.87 kg.10 m –2 of dry tops and from the three-years old plants, 8 kg. 10 m –2 , was obtained. The content of hypericin varied from 0.06 to 0.13 %, and 60% ethanolextracted 21.7–27,9 % of substances.
V práci sa počas dvoch vegetačných období sledovali medovky zo 17 oblastí Európy a domáci kultivarCitra. Medovky sa odlišovali výškou, olistením a obsahom silice. V sledovaných pestovateľskýchpodmienkach bolo možné urobiť dva zbery počas roka. V obidvoch pokusných rokoch vo fáze tesnepred kvetom, resp. nástupu kvitnutia v súbore prevažovali rastliny s výškou 60–80 cm. Podiel listovvo vňati bol 35–70 %. V druhom (jesennom) zbere rastliny s novovytvorenými výhonkami dosiahlivýšku 15–35 cm a mali olistenie 60–95 %. Obsah silice v listoch vo fáze tesne pred kvetom, resp.nástupu kvitnutia sa pohyboval v rozmedzí 0,06–0,16 % (V/m) a maximálny obsah silice malirastliny z druhého zberu (0,09–0,45 %). Kultivar Citra sa vyznačoval stredným vzrastom (75 až80 cm), vyrovnanými hodnotami olistenia (I. zber 55–60 % a II. zber 70–80 %) a obsahu silice (I. zber0,13 % a II. zber 0,23–0,27 %).
Within two vegetation periods, melissas from 17 European regions and the inland cultivar Citrawere examined. Melissas differed in height, foliage, and essential oil content. In the cultivatingconditions under study, two collections were possible in one year. In both experimental years at thestage just before blooming, or at the onset of blooming, plants 60–80 cm in height prevailed in theset. The share of leaves in the tops was 35–70 %. In the second repeated harvest, plants with newlyformed sprouts reached a height of 15–35 cm and had the best foliage (60–95 %). The essential oilcontent in the leaves at the stage just prior to blooming, or at the onset of blooming, ranged from0.06 to 0.16% (V/m), and the maximal essential oil content was in the plants from the secondharvest (0.09–0.45 %). The cultivar Citra was characterized by medium height (75–80 cm), stablevalues of foliage (1 st harvest 55–60 %, 2 nd harvest 70–80 %), and essential oil content (1 st harvest0.13 %, 2 nd harvest 0.23–0.27 %).
