Plant Protection Science, 2017 (vol. 53), issue 3
Woolly ash aphid - is the alien bug posing a threat to European ash trees? - a reviewReview
Roman Hałaj, Barbara Osiadacz
Plant Protect. Sci., 2017, 53(3):127-133 | DOI: 10.17221/138/2016-PPS 
Prociphilus (Meliarhizophagus) fraxinifolii (Riley, 1879) (Hemiptera: Eriosomatidae) is an alien species in Europe that has been spreading quickly there. This paper presents the origin and current occurrence, classification, description, identification, and biology of this species. It also discusses the harmfulness and threats, especially the impact on host- plants and ecosystem, invasion rate and facilitating factors.
Potential of some bacteria for biological control of postharvest citrus green mould caused by Penicillium digitatumOriginal Paper
Parisa Mohammadi, Elif Tozlu, Recep Kotan, Merve Şenol Kotan
Plant Protect. Sci., 2017, 53(3):134-143 | DOI: 10.17221/55/2016-PPS
Ten bacteria isolate (4 Bacillus subtilis, 2 Bacillus pumilus, 2 Bacillus cereus, 1 Bacillus megaterium, and 1 Agrobacterium radiobacter) were tested in vitro for antagonistic properties against Penicillium digitatum, the causal agent of citrus green mould. The effect of these bacteria was also observed on mycelial growth, spore germination, and spore production of the pathogenic fungus in broth culture. Extracellular enzyme activities of the bacteria were determined. According to the results of in vitro antagonistic tests and enzymes activities, the most promising bacteria were Bacillus...
Epidemiology of Fusarium agave wilt in Agave tequilana Weber var. azulOriginal Paper
María de Jesús Ramírez-Ramírez, N. Alejandra Mancilla-Margalli, Lucía Meza-Álvarez, Ramón Turincio-Tadeo, Doralinda Guzmán-de Pena, Martin Eduardo Avila-Miranda
Plant Protect. Sci., 2017, 53(3):144-152 | DOI: 10.17221/142/2016-PPS
Fusarium oxysporum is reported as the principal causal agent limiting production of Agave tequilana Weber var. azul, but frequent isolation of F. solani, and symptoms typical of F. solani as a pathogen like severe reddish coloured root rot and loss of soil anchorage are frequently associated with diseased agaves. Inoculations of agave plantlets with F. solani induced typical agave root rot symptoms in greenhouse trials. The incidence of both pathogens was determined molecularly with specific primers in the ITS2 sequence. Dispersion patterns of agave wilt, determined in plantations of different age, indicated...
Identification of a rust disease of giant knapweed in the Czech Republic - short communicationShort Communication
Irena Petrželová, Michaela Jemelková, Ivana Doležalová, Vladan Ondřej, Miloslav Kitner
Plant Protect. Sci., 2017, 53(3):153-158 | DOI: 10.17221/117/2016-PPS
During the vegetation seasons 2012-2015, symptoms of severe infections by a rust disease were recorded on plants of the ornamental species Centaurea macrocephala. Based on morphology, the pathogen was identified as Puccinia jaceae or Puccinia hieracii, which have recently been considered as synonyms. However, substantial differences between P. jaceae and P. hieracii in nucleotide sequences of the ITS2 region provide evidence for the molecular identification of the specimen as P. jaceae.
Spatial distribution of cabbage root maggot (Delia radicum) and clubroot (Plasmodiophora brassicae) in winter oilseed rape crops in the Czech RepublicOriginal Paper
Vojtěch Hlavjenka, Marek Seidenglanz, Aleš Dufek, Hana Šefrová
Plant Protect. Sci., 2017, 53(3):159-168 | DOI: 10.17221/181/2015-PPS
The amount and spatial distribution of plants afflicted with cabbage root maggot (Delia radicum; CRM) and clubroot (Plasmodiophora brassicae) in winter oilseed rape crops were assessed in the Olomouc region (Northern Moravia, Czech Republic) over the course of 2012-2014. A total of 16 commercial rape fields were included in the assessments. Plants with tumours showed a significantly lower (P < 0.001) level of infestation induced by CRM (24% of plants infested) compared to plants without tumours (37% of plants infested). According to a generalised linear mixed model, plants with thicker hypocotyls are predisposed to significantly...
Field efficacy of brief exposure of adults of six storage pests to nitrogen-controlled atmospheresOriginal Paper
Radek Aulicky, Vlastimil Kolar, Jan Plachy, Vaclav Stejskal
Plant Protect. Sci., 2017, 53(3):169-176 | DOI: 10.17221/136/2016-PPS
The efficacy of a brief exposure (1, 7, and 10 days) to a nitrogen-controlled atmosphere (N-CA) for major storagepests in a field validation study in the Czech Republic is reported. The main goal was to estimate how quickly themobile adult stages of six species of storage beetles (Oryzaephilus surinamensis, Cryptolestes ferrugineus, Triboliumconfusum, Tribolium castaneum, Sitophilus granarius, and Sitophilus oryzae) are killed after introduction of theinfested commodity to prevent their further spread to the surrounding storage bins. The trials were conducted in ametal bin containing 25...
First record of a new alien economically important thrips Dichromothrips corbetti (Priesner, 1936) (Thysanoptera: Thripidae) in Slovakia - short communicationShort Communication
Rudolf Masarovič, Martin Štefánik, Martina Zvaríková, Jakub Sigmund, Peter Fedor
Plant Protect. Sci., 2017, 53(3):177-180 | DOI: 10.17221/141/2016-PPS
The first record of vanda thrips (Dichromothrips corbetti [Priesner, 1936], Thysanoptera, Thripidae) in Slovakia is presented. An economically important pest with heavy infestations on flowers of Phalaenopsis orchids was recorded as introduced most probably from North African plantations. Potential infiltration of this exotic species into Central European glasshouses refers to the globalisation of trade in biological commodities.
Phytoseiid mites on Quercus cerris in an urban park - short communicationShort Communication
Jan Kabíček
Plant Protect. Sci., 2017, 53(3):181-186 | DOI: 10.17221/167/2016-PPS
The community of phytoseiid mites on the leaves of non-indigenous Quercus cerris was studied in an intensively managed urban park during the years 2012-2014. Five phytoseiid species, namely Kampimodromus aberrans, Typhloseiulus peculiaris, Euseius finlandicus, Typhlodromus (Typhlodromus) pyri, and Paraseiulus triporus, were found on the studied oak leaves; three of them are generalist predators. K. aberrans and T. peculiaris were the dominant species (88.5% of all sampled phytoseiids), of which K. aberrans was the significantly most abundant species on...
Weed suppression and early sugar beet development under different cover crop mulchesOriginal Paper
Christoph Kunz, Dominic J. Sturm, Markus Sökefeld, Roland Gerhards
Plant Protect. Sci., 2017, 53(3):187-193 | DOI: 10.17221/109/2016-PPS
Field experiments were conducted at two locations in 2014-2015 and 2015-2016 to investigate the weed suppressive ability of cover crop mulches in sugar beets. Three cover crops and two cover crop mixtures were tested in all four experiments. Weed densities ranged from 2 up to 210 plants/m2 in Chenopodium album L. and Stellaria media (L.) Vill. as predominant species. Sinapis alba grew significantly faster than Vicia sativa, Raphanus sativus var. niger, and both cover crop mixtures. Sinapis alba, Vicia sativa, Raphanus sativus var. niger reduced weed density...