Zbiorowiska roślinne z klasy Koelerio glaucae-Corynephoretea canescentis Klika in Klika et Novak 1941 występujące na trwałych użytkach zielonych w Parku Krajobrazowym „Podlaski Przełom Bugu”
Plant communities from Koelerio glaucae-Corynephoretea canescentis class Klika in Klika et Novak 1941 located in the permanent grasslands of the ‘Bug Ravine’ Landscape Park

• Abstract

  • Abstract. The aim of performed investigation was to describe psammophilous communities of Koelerio glaucae-Corynephoretea canescentis class placed in the permanent grasslands of the ‘Bug Ravine’ Landscape Park. Based on the phytosociological data collected in 2004–2006 with the use of the Braun-Blanquet method, it was characterized five phytocenoses: Diantho-Armerietum elongatae, Spergulo vernalis-Corynephoretum, Corniculario-Cladonietum mitis, community of Koeleria glauca and community of Dianthus carthusianorum – Festuca ovina. The descriptions of them included: species composition of each community, their synthaxonomic structure, proportion of synanthropic species, species richness, floristic diversity calculated using the Shannon-Wiener index (H’), site conditions estimated with the use of the Ellenberg phytoindication method and the numebr of rare or protected species. The fodder value of each community using the Filipek method (fodder value score FVS) was estimated, too. The presented communities showed high environmental value, but they had a very poor fodder value in the same time. The most popular community was Diantho-Armerietum and that association showed the highest species richness and the largest number of rare taxa. Presented results were discussed with the focus on the factors that could threaten described communities and in the context of the protection of those phytocenoses.

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  • Abstract. In the aim to determine the effects of soil fertilizer on the floristic composition of sward and yielding of mixtures Festulolium with red clover and alfalfa, at April 18 in 2007 two-factor field experiment was established in a randomized block arrangement with 3 replications. The first experimental factor were 3 legumes – grass mixtures having the following composition and quantitative: M1 – Festulolium Braunii (Felopa cv.) 50%, Trifolium pratense (Tena cv.) 50%, M2 – Festulolium Braunii (Felopa cv.) 50%, Medicago sativa sp. Media (Tula cv.) 50%, M3 – Festulolium Braunii (Felopa cv.) 50%, Trifolium pratense (Tena cv.) 25%, Medicago sativa sp Media (Tula cv.) 25%. The second testing, factor was the soil fertilizer, used for a single plants watering in a stage of Festulolium shooting in the first regrowth, as a solution in a dose 0.9 l ha^–1 diluted in 350 l of water. On the all experimental objects were annually used the mineral fertilization (60 kg N, 120 kg K₂O, P₂O₅ and 80 kg ha^–1). The specific research included: floristic composition of the sward of the first cut and dry matter yield of plants.

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Zróżnicowanie cech morfologicznych oraz plonu masy nadziemnej wybranych ekotypów podlaskich Poa pratensis w początkowym etapie ich rozwoju
Differentiation of morphological traits and above-ground mass yield of Poa pratensis ecotypes from Podlasie Province in the initial stage of their development

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  • Abstract. This paper presents results of examinations carried out in 2006–2007 which aimed at performing initial differentiation of 11 Kentucky bluegrass (Poa pratensis L.) in respect of selected morphological traits and above-ground mass yield quantity. Measurements were carried out in the presence of two standard varieties, i.e. a lawn variety Alicia and a fodder form Skrzeszowicka. The examined population of smooth Kentucky blue-grass ecotypes proved to be relatively uniform in respect of most analysed morphological traits and green and dry matter yield quantity. Among them, object pod02 426 deserves special attention as being characterised by the best uniformity of analysed parameters and attaining higher values in relation to such traits as Lpw, Ll, Szbl and A as well as plant productivity, favourable for meadow use. Thousand seed weight did not significantly affect the value of most analysed traits, except green matter yield (r = – 0,714) and leaf blade mass (r = – 0,581). However, it was observed that forms developing longer vegetative shoots and leaf blades with larger assimilation area during 4 examination months were also characterised by higher yield of green and dry matter. kg ha^–1 (increase of 74.9% in comparison to object without fertilization).

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  • Abstract. The floristic studies were performed according to the Braun-Blanquet`s method on grasslands in the Nadwieprzański Landscape Park. The objective of the researches was to recognize the flora as well as moisture and trophy value characteristics and sward value of the selected grassland phytocoenoses in the central part of the Wieprz river valley. The associations from Molinio-Arrhenatheretea class found in the moderate moist habitats (wetness index 3.2–3.7), in the slightly elevated sites and valley borders were represented by the Alopecuretum pratensis, Arrhenatheretum elatioris and the community with Poa pratensis-Festuca rubra. Their sward characterized by moderate to good value. Floristic composition of investigated communities indicated higher habitat fertility than it was proved by soil chemical analyses.

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Efektywność regeneracji runi po zniszczeniach spowodowanych przez zwierzynę leśną
Efficiency of sward regeneration from damage caused by the forest game

• Abstract

  • Abstract. The study objective was to assess the efficiency of sward regeneration from damage caused by forest game. The study, conducted on peat-muck soil at Sosnowica between 2009 and 2010, encompassed meadows and pastures damaged by wild boar. Two types of sward use, the regeneration of the damaged sward and old sward were examined. The efficiency of overdrilling is influenced by several factors such as yield, species composition, quality of the forage obtained and, above all, the costs. Taking into account the factors above, the study conducted indicated that performing overdrilling after damage caused by wild boar is a fully justified measure.

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