Use of Media Supplemented with Compost Containing Potato Pulp in Cultivation of Egyptian Star Cluster (Pentas lanceolata (Forssk.) Deflers)

Two experiments were carried out in the years 2005-2006 to examine if media supplemented with 20, 40 or 60 % compost containing 70 % potato pulp and 30 % rye straw can be used in cultivation of three cultivars of Pentas lanceolata. In the first experiment compost after 7 months of composting process was used and in the second experiment compost after 19 months of composting process was used. It was found that mixtures of 20 % compost and 80 % sphagnum peat can be recommended for Egyptian star cluster cultivation. Plants cultivated in such media were healthy, well-formed and blossomed abundantly. Media containing 40 and 60 % compost were characterized by too high macroelements content and by too salinity. Plants cultivated in such media were small and blossomed poorly.

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W latach 2005-2006 przeprowadzono dwa doświadczenia, których celem było zbadanie, czy podłoża z dodatkiem 20, 40 lub 60 % kompostu zawierającego 70 % wycierki ziemniaczanej i 30 % słomy żytniej mogą, być stosowane w uprawie trzech odmian piątaka lancetowatego. W doświadczeniu I zastosowano kompost po 7 miesiącach kompostowania, a w doświadczeniu II kompost po 19 miesiącach kompostowania.