Horticultural Science, 2015 (vol. 42), issue 4
Index of volume 42Index
editors
Hort. Sci. (Prague), 2015, 42(4):I-II | DOI: 10.17221/8568-HORTSCI 
Effect of two-spotted spider mite population (Tetranychus urticae Koch) on growth parameters and yield of the summer apple cv. KatjaOriginal Paper
W. Warabieda
Hort. Sci. (Prague), 2015, 42(4):167-175 | DOI: 10.17221/259/2014-HORTSCI
The effect of two-spotted spider mite populations (Tetranychus urticae Koch) on the yield and growth parameters of the early-season apple cv. Katja was evaluated during a 3-year study. In the case of the colonisation of apple trees exceeding 1,462, 2,760 and 1,548 cumulative mite days (CMDs) in the subsequent years of research, a significant reduction of the cumulative yield (14 kg/tree) and of the cumulative trunk cross sectional area increase (5.7 cm2) was observed. No significant effect of spider mites on the average weight of the fruit was observed, while the pest affected fruit colouration. The calculated values of economic...
Biochemical and pomological assessment of European pear accessions from Bosnia and HerzegovinaOriginal Paper
G. Đurić, M. Žabić, M. Rodić, S. Stanivuković, B. Bosančić, B. Pašalić
Hort. Sci. (Prague), 2015, 42(4):176-184 | DOI: 10.17221/53/2015-HORTSCI
The research on 10 old and indigenous pear cultivars was conducted during 2012 and 2013 in Bosnia and Herzegovina. The following characteristics were determined: fruit weight, fruit length and width, stalk length and width, fruit flesh firmness; soluble solids content and total dry matter content of the fruit juice; pH, titratable acidity, vitamin C, total phenolics, total flavonoids and antioxidant activity of the fruit cell juice. On the basis of the Principal Component Analysis (PCA) of pomological fruit characteristics the studied cultivars were divided into four main groups. Based on the PCA of biochemical traits the studied cultivars can be divided...
Medium strength in inorganics and PVP concentration effects on cherry rootstocks in vitro rootingOriginal Paper
V. Sarropoulou, K. Dimassi-Theriou, I. Therios
Hort. Sci. (Prague), 2015, 42(4):185-192 | DOI: 10.17221/359/2014-HORTSCI
The effects of two strength media (full and half) in inorganics and five polyvinylpyrrolidone (PVP) concentrations combined with 1 mg/l indole-3-butyric acid on the in vitro rooting of the CAB-6P, Gisela 6 and M × M 14 cherry rootstocks were investigated. For the CAB-6P, root number (5.80) was greatest by adding 5 g/l PVP to the half strength medium and 1 g/l PVP resulted in 80% rooting percentage. For Gisela 6, 1 g/l PVP in half strength medium led to the highest root number (6.30) as well as the highest rooting percentage (90.91%). On the contrary, root length was maximum (36.17 mm) in the full strength medium without adding PVP. In M ×...
Influence of rootstocks on different sweet cherry cultivars and accumulation of heavy metals in leaves and fruitOriginal Paper
A. Stachowiak, M. Bosiacki, S. Świerczyński, M. Kolasiński
Hort. Sci. (Prague), 2015, 42(4):193-202 | DOI: 10.17221/141/2014-HORTSCI
Two seedling rootstocks of Mahaleb cherry (Prunus mahaleb L.) from a German type cv. Alpruna marked as No. 2 and No. 6 were selected for their semi-dwarfing properties from biotypes growing at the Rural Experimental Station in Baranowo belonging to the University of Life Sciences in Poznan, Poland. In an orchard experiment in 2012-2013, growth and yield of eight- and nine-year old trees of the cvs Regina, Summit and Vanda were studied. These cultivars were grafted on Mahaleb cherry No. 2 and No. 6 and were compared to the control rootstock Mazzard (Prunus avium L.) cv. Alkavo. The Mahaleb cherry biotypes significantly decreased the...
Effects of the growing season extension on Polish primocane-fruiting raspberry cultivarsOriginal Paper
M. Lewandowski, E. Żurawicz, K. Pruski
Hort. Sci. (Prague), 2015, 42(4):203-208 | DOI: 10.17221/306/2014-HORTSCI
Three primocane-fruiting raspberry cvs, Polana, Polka and Polesie, were evaluated for their performance under various early spring coverings during the 2010-2013 growing seasons. Three cultivation techniques were compared: covering plants with perforated plastic cover, covering plants with fibre cover (in early spring, for a period of about 1 month), mowing of young canes in the middle of May; the control combination were plants without covers and not mown. During each growing season, plant growth vigour, yielding and fruit quality (soluble solids and vitamin C content) were assessed. The use of low covers (perforated plastic cover and fibre cover)...
Biodegradation of composites based on maltodextrin and wheat B-starch in compostOriginal Paper
L. Růžek, M. Růžková, M. Koudela, L. Bečková, D. Bečka, Z. Kruliš, E. Šárka, K. Voříšek, Š. Ledvina, B. Šalounová, J. Venyercsanová
Hort. Sci. (Prague), 2015, 42(4):209-214 | DOI: 10.17221/219/2014-HORTSCI
The study is focused on the microbial and chemical parameters of green compost in which composites based on acetylated wheat B-starch and maltodextrin (patented procedure) were biodegraded and also on the parameters of lettuce grown on this compost before and after the biodegradation. With a load of up to 1 g of composites per 1 l of compost, and with a storage period of 0, 7-14, 15-20 and 21-147 days, mixture of compost wiped off the surface both of well-preserved composites and of the immediate surroundings of their residues was evaluated. Microbial biomass, basal respiration (BR), metabolic quotient, dehydrogenase and arylsulfatase activity (ARS)...
Comparison of field efficacy of four natural fungicides and metiram against late blight (Phytophthora infestans [Mont.] de Bary) on tomato - Short CommunicationShort Communication
T. Bohinc, D. Žnidarčič, S. Trdan
Hort. Sci. (Prague), 2015, 42(4):215-218 | DOI: 10.17221/366/2014-HORTSCI
Fungicidal activity of asaronaldehyde, soybean lecithin, garlic extract, salicylic acid, and metiram against late blight on tomato was investigated in a field block experiment. Significantly the lowest severity index was detected on plants treated with metiram, while there were no significant differences among plants treated with different natural substances. Mean mass of healthy tomatoes was the highest on plants treated with metiram. It was assumed that severity index was mainly influenced by abiotic factors, especially rain. None of the natural fungicides tested showed satisfactory efficacy against the late blight, therefore new environmentally...