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Scientific Papers Series B Horticulture

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holding capacity (CU%) 4.5-7.1%; the contentof organic matter is middle; the content of N ismiddle for the entire soil profile 0,172-0,262%;the mobile P is low in the entire soil profile(10-16 ppm); the content of mobile K is middlefor Am and low for A/R; cation exchangecapacity (T) is 37-38 me/100g soil; degree ofbase saturation V% is higher 87-92%; the soilpH is slightly alkaline (Buta, 2009).Due to favorable physicochemical properties,calcaro-rendzic leptosols are distinguishedthrough a very high fertility.Many of the world’s favorite plants occurnaturally on alkaline or limestone soils. Theyinclude pinks, clematis, and many of the jewellikealpine plants found growing on thelimestone mountains of Europe and Asia. Soilsover limestone are almost invariably alkaline innature, but they can also be very fertile if theyare deep and rich in organic matter – a wealthof plants give their ornamental best on suchsoils (Reed, 2011; Cantor, 2008). For calcarorendzicleptosols the following species arerecommended: Chamaecyparis lawsoniana‘Intertexta’, Fraxinus ornus, Morus nigra,Buddleja sp., Cornus mas, Cotinus coggygria,Deutzia crenata ‘Nikko’, Helianthemum‘Rhodanthe Carneum’, Potentilla fruticosa ‘RedAce’, Campsis radicans, Jasminum nudiflorum,Clematis ‘The President’, Aspleniumtrichomanes, Colchicum autumnale, Dicentraspectabilis, Amarantus caudatus, Dianthuscaryophyllus, Cheiranthus cheiri,Alyssummaritimum, Iresine lindenii, Iresine herbstii,Myosotis alpestris, Cercis siliquastrum,Platycodon grandiflorus, Pulsatilla vulgaris,Rudbeckia laciniata ‘Herbstsonne’, Cotoneasterfranchetii, Leontopodium alpinum (Selaru,2007; Iliescu, 2006).2. Calcaric arenosols (WRB – SR-1988)present the next succession of horizons: Ap AoA/R A/B ka.The phisico-chemical properties ischaracterized by: field capacity (CC%) between27 and 39%; wilting coefficient (CO%) 22-23%; available moisture holding capacity(CU%) 3.7-16.10%; the content of organicmatter is low for the entire profile; the contentof N is low for the entire soil profile 0.112-0.130%; the mobile P is low in the entire soilprofile (4-8 ppm); the content of mobile K ismiddle for Am – 135 ppm and low for A/R –29674 ppm; soil texture is sandy for the entireprofile > 57% sand (Buta, 2009).The recommended dendro-floricol assortmentis the following: Stipa gigantean, Portulacagrandiflora, Salvia splendens, Celosia argenteavar. cristata, Delphinium cultorum, Santolinachamaeciparyssus, Hibiscus syriacus, Betulaermanii, Pinus sylvestris Aurea Group, Robiniapseudoacacia ‘Frisia’, Cytisus x praecox, Ericaaustralis, Lavandula pedunculata subsp.Pedunculata, Lavatera x clementii, Perovskia‘Blue Spire’, Phlomis fruticosa, Achillea‘Walther Funcke’, Dictamnus albus, Eremurusrobustus, Eryngium x tripartitum, Lupinus ‘TheChatelaine’, Oenothera macrocarpa,Ornithogalum umbellatum, Salvia officinalis‘Tricolor’ (Reed, 2011; Toma, 2009).3. Distric cambisols (WRB – SR-1988)present the next succession of horizons: Ao BvC.The majority of acid-preferring plants areoriginally from woodland areas, and they prefera cool, more or less shady environment and asoil that is leafy, organic, and moist butwelldrained. In nature, such soils are fairlyfertile because nutrients are annuallyreplenished by the recycling of fallen leaves.There are also many acid-preferring plants thatneed or tolerate more open sites in sun, such aswitch alder, Lithodora diffusa ‘Heavenly Blue’,and most heather (Reed, 2011; Draghia, 2011).The phisico-chemical properties of districtcambisols is characterized by: field capacity(CC%) between 25 and 32%; wiltingcoefficient (CO%) 7-10%; available moistureholding capacity (CU%) 25-32%; the contentof organic matter is low; the content of N ismiddle for the entire soil profile 0.150-0.260%;the mobile P is low in the entire soil profile (

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