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This paper shows the results of many years researches of the weed vegetation of vineyards in western Balkan which includes eight associations: Panico-Galinsogetum parviflorae Tüxen et Becker 1942, PanicoPortulacetum oleraceae Lozanovski 1962, Cynodono-Sorghetum halepensae (Laban 1974) Kojić 1979, Amarantho-Fumarietum Tüxen 1955, Diplotaxietum muralis Kovačević 2013, Convolvulo-Polygonetum aviculare...
North American hackberry as a tree with resistance to Dutch elm diseases, pollutions and urban conditions is predisposed to becoming one of the common tree species for urban areas. Therefore, it is necessary to develop methods for nursery production of this species. The aim of this research was to determine the effect of fertilization and different methods of cultivation in rows with simultaneous...
Particularly adverse growing conditions are found in urban green areas, where apart from salinity stress plants are exposed to drought stress. For this reason the aim of this study was to determine the effects of negative action and enhanced resistance to substrate salinity caused by increasing doses of NaCl in cultivation of ornamental grasses Koeleria glauca (Spreng.) DC., Sesleria caerulea (L.)...
This study was carried out during 2012 in oil rose (Rosa damascena Mill.) production areas in Burdur province of Turkey. A total of 102 oil rose leaf samples showing virus-like symptoms were collected from 8 different locations. All oil rose leaf samples were tested for Prunus necrotic ringspot virus (PNRSV) using commercially available DAS-ELISA kit with negative and positive control. 16 samples...
Pleurotus ostreatus (Jacq.) P. Kumm. (Basidiomycota) – known as the oyster mushroom – is a mushroom species distributed on all continents, except for Antarctica. Since World War I it has been commercially cultivated on a large scale. Pleurotus ostreatus is a valuable mushroom of dietary importance. It is rich in primary and secondary metabolites and chemical elements of physiological significance...
The bionomy and ecology of Aphis craccivora on Robinia pseudoacacia was studied. The number of generations per year was determined, as well the lifespan of a generation and fecundity of the females. For the first time the strategy of development of a dangerous pest has been determined which enables it to spread worldwide. A. craccivora is a cosmopolitan species. It is a polyphagous insect settling...
The blooming wild plants in the vicinity of orchards may attract adult Syrphidae to these cultivations. Hence in 2008–2010 studies were conducted around Czempiń (western Wielkopolska) which covered the occurrence of the imagines of 5 dominant predatory Syrphidae species in apple orchards and on their edges. The phenology of Episyrphus balteatus (De Geer), Eupeodes corollae (F.), Melanostoma mellinum...
The numerous publications on the positive impact of sea buckthorn and its products on human health concern mainly the fruits and seeds. However, there is little data relating to the properties of sea buckthorn leaves. The main objective of this study was to evaluate the chemical composition and isotope content in the leaves of sea buckthorn Hippophae rhamnoides L. depending on where its existence...
Virus-infected tulip bulbs produce flowers with virus symptoms what makes cut flowers unmarketable. The aim of the work was to check frequency of virus presence in bulbs intended for forcing and originating both from the Polish farms and imported from The Netherlands. The tests were carried out on four tulip cultivars– ‘Hermitage’, ‘Pretty Woman’, ‘Purple Prince’ and ‘Strong Gold’ during four forcing...
In terms of turnover value on the global wholesale flower markets, freesia has been for many years in the top ten of cut flowers. Achieving high quality inflorescences in a cultivation center without cooling the substrate is a huge challenge for the producers. The study was conducted in the years 2010–2012, during the summer-autumn season in an unheated foil tunnel. The material consisted of prepared...
The aim of this study was to assess vase life of leaves harvested at two dates – in the spring and summer, for 3 cultivars of Heuchera L. following the application of benzyladenine in spraying of maternal plants one day prior to leaf harvest. Leaves of cultivar ‘Southern Comfort’ were most durable, while those of cultivar ‘Purple Petticoats’ – least durable. Leaves harvested in summer had a longer...
Soybeans serve as one of the most valuable crops in many countries, including Poland, due to the high nutritional value of its seeds, its resistance to diseases and pests. Under the climatic conditions of Poland, soybean yield is largely dependent on weather conditions in a particular growing season, primarily temperature and rainfall. The aim of this study was to evaluate the effect of cover crops...
The genus Helleborus belongs to the family Ranunculaceae and comprises about 22 species, which are distributed over different parts of Europe and West Asia. In Poland, only H. purpurascens is native and it occurs in the Western Bieszczady Mountains. Hellebores are popular as ornamental cut flowers and medicinal plants in Europe and the USA. Conventional propagation by seeds or division has a low multiplication...
Plant regeneration through the tissue culture techniques would be a excellent alternative for improving the quality and faster production of Asparagus species. The number of reports on application of biotechnological methods (such as direct organogenesis, indirect organogenesis and somatic embriogenesis) for ornamental asparagus are scarce in comparison to edible asparagus. The aim of this study was...
This study was conducted in Çanakkale Province, Bayramiç County between 2011 and 2013. The aim of this study was to determine the best rootstock × genotype combination by grafting 14 standard and local sweet cherry genotypes cultivated in Amasya Province on Mazzard, Gisela 5 and Gisela 6 rootstocks with T-budding method. Graftings were conducted on August 15th in both years. Following the grafting,...
In moderate climates where milk thistle is grown as a medicinal plant it emerges slowly and unevenly and thus it is exposed to weed infestation. The aim of this study was to estimate if the storage temperature and thousand seed weight (TSW) of the seed material have an effect on the number of emerging plants. In the 3-year field experiment, seed material that had been stored at 23, 15 and 7°C and...
Infestation with pathogenic fungi is frequently a cause of poor carrot seed quality. The effect of hydrogen peroxide (H2O2) treatment on germination, vigour and health of carrot seeds as well as plant emergence was investigated. Four seed samples were tested. Seeds were soaked in 3, 6, 9 and 12% H2O2 solutions for 10, 30 and 60 min. Controls were untreated seeds, seeds treated with fungicide (a.i...
Alternate bearing is a typical behavior of various fruit tree crops and is common among olive cultivars (Olea europæa L. var. sativa Hoffm. e Lk.). Since this phenomenon affects yield and consequently oil production, it is a concern for olive oil industry in order to offer a constant olive oil amount each year. A 4-year field experiment was conducted on cv Chemlali olive trees in ‘on’ and ‘off’ years...
Swiss chard may be cultivated for a single or in small scale of production for multiple harvest. The objective of the field experiment conducted in 2012–2014 was to determine the response of this vegetable crop to nitrogen fertilization. Lukullus and Green Silver cultivars were grown from direct seed sowing into the field and supplied with 100 or 200 kg N·ha-1 by using ammonium nitrate and Entec 26...
Aim of the project was to test 23 strawberry cultivars in the climate of Poland and evaluate their economic value. 13 of discussed cultivars were newly bread in Poland and 10 are of foreign origin including cultivars that were never tested in East–Central Europe. All of these cultivars were evaluated in comparison to the 4 standard cultivars used in Poland. The experiment was conducted between 2004...
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