Plant Protection Science, 2010 (vol. 46), issue 2
Management of bacterial blight of cotton using a mixture of Pseudomonas fluorescens and Bacillus subtilis
Khabbaz SALAHEDDIN, Veeramuthu VALLUVAPARIDASAN, Duraisamy LADHALAKSHMI, Rethinasamy VELAZHAHAN
Plant Protect. Sci., 2010, 46(2):41-50 | DOI: 10.17221/20/2009-PPS 
The potential of antagonistic rhizobacteria in the management of bacterial blight of cotton caused by Xanthomonas axonopodis pv. malvacearum (Xam) was evaluated under greenhouse and field conditions. In this study, 93 bacterial isolates from the rhizosphere of cotton were screened for their efficacy in inhibiting the growth of Xam in vitro. Among them, 21 isolates were found to inhibit the in vitro growth of Xam. These isolates were identified as Pseudomonas fluorescens and Bacillus subtilis based on phenotypic characteristics, biochemical properties and using 16S-23S intergenic transcribed...
Pathogenicity and aggressiveness of Fusarium oxysporum Schl. in bottle gourd and bitter gourd
Christian Joseph Rili Cumagun, Jelmer Abejuela Aguirre, Cherry Apin Relevante, Conrado Hubay Balatero
Plant Protect. Sci., 2010, 46(2):51-58 | DOI: 10.17221/18/2009-PPS
Fusarium oxysporum is responsible for a large range of diseases on economically important crops such as bitter gourd and bottle gourd. Pathogenicity and aggressiveness of F. oxysporum in bitter gourd and bottle gourd isolated from two breeding stations of East-West Company in the Philippines namely San Ildefonso, Bulacan and Lipa, Batangas were tested. Eleven F. oxysporum isolates from bitter gourd and 12 isolates from bottle gourd were inoculated on 7-day and 1-month-old bitter gourd and bottle gourd plants in the greenhouse. All F. oxysporum isolates from bitter gourd were pathogenic on 7-day-old and 1-month-old...
Influence of temperature and species origin on Fusarium spp. and Microdochium nivale pathogenicity to wheat seedlings
Kamil HUDEC, Darina Muchová
Plant Protect. Sci., 2010, 46(2):59-65 | DOI: 10.17221/12/2009-PPS
The influence of temperature and species origin on the in vitro growth rate and pathogenicity of Fusarium and Microdochium nivale (F. avenaceum, F. culmorum, F. graminearum, F. poae, and M. nivale) to wheat seedlings was examined. The mycelial growth of Fusarium avenaceum, F. culmorum, F. graminearum, and F. poae was the fastest at 25°C, and of M. nivale at 15°C. The isolates of F. culmorum, F. graminearum and F. poae originating from mountain regions grew significantly faster at 15°C than those from flatland regions. The isolates from flatland regions grew significantly...
Effect of the mycoflora of ergot (Claviceps purpurea)sclerotia on their viability
Michal ONDŘEJ, Bohumír CAGAŠ, Eliška ONDRÁČKOVÁ
Plant Protect. Sci., 2010, 46(2):66-71 | DOI: 10.17221/48/2009-PPS
Twenty fungal species were isolated from sclerotia of ergot (Claviceps purpurea) originating from rye. In in vitro tests with the anamorphic stage of ergot (known as Sphacelia segetum) high mycoparasitic activity was exhibited only by two of them - Clonostachys rosea and Trichoderma harzianum, moderate mycoparasitic activity was detected in Ulocladium sp., Clonostachys catenulata, Trichoderma hamatum, and Trichothecium roseum. In in vitro tests of mycoparasitic activity with sclerotia of the fungus Sclerotinia sclerotiorum their rapid and total destruction was brought...
Fecundity and development rate of the bird cherry-oat aphid, Rhopalosiphum padi (L) (Hom.: Aphididae) on six wheat cultivars
Sedigheh Taheri, Jabraeil Razmjou, Nowzar Rastegari
Plant Protect. Sci., 2010, 46(2):72-78 | DOI: 10.17221/10/2009-PPS
Rhopalosiphum padi is a polyphagous species with a nearly worldwide distribution. Biological parameters of this aphid on six commonly grown wheat cultivars in the Fars province including Chamran, Darab2, Shiraz, Ghods, Marvdasht and Niknezhad were investigated at the two-leaf stage of wheat. The experiments were carried out at 24 ± 5°C, 65 ± 5% R.H. and a photoperiod of 14:10 h (L:D) in a greenhouse. The number of nymphs per female of R. padi was 62.05, 55.84, 49.89, 47.63, 42.76 and 40.65 (nymphs/female) on Niknezhad, Shiraz, Ghods, Marvdasht, Chamran, and Darab2, respectively. Also, the highest and the lowest rm...
Scarceness of phytoseiid species co-occurrence (Acari: Phytoseiidae) on leafletsof Juglans regia
Jan Kabíček
Plant Protect. Sci., 2010, 46(2):79-82 | DOI: 10.17221/32/2009-PPS
In order to obtain information on the phytoseiid mite taxocoenoses, population density and frequency of occurrence on leaflets of Juglans regia, abandoned and uncultivated trees were sampled from July to August 2007. Eight phytoseiid mite species (Euseius finlandicus, Neoseiulella aceri, Neoseiulella tiliarum, Typhlodromus pyri, Typhlodromus cotoneastri, Phytoseius turiacus, Amblyseius andersoni, Paraseiulus triporus) were identified. Total phytoseiid population density averaged 1.4 mites per leaflet. The most abundant was Euseius finlandicus, and Neoseiulella aceri was the second most common species. The predominant...
Effect of selected pesticides on the vitality and virulence of the entomopathogenicnematode Steinernema feltiae (Nematoda: Steinernematidae)
Štěpánka Radová
Plant Protect. Sci., 2010, 46(2):83-88 | DOI: 10.17221/35/2009-PPS
The survival and infectivity of infective juveniles of the entomopathogenic nematode Steinernema feltiae (Rhabditida: Steinernematidae) were determined after being exposed to 8 insecticides (a.i. kinoprene, lufenuron, methomyl, metoxyfenozide, oxamyl, piperonyl-butoxide, pyriproxyfen, tebufenozide), 7 acaricides (a.i. azocyclotin, clofentezin, diafenthiuron, etoxazole, fenbutatinoxide, fenpyroximate, tebufenpyrad) and 4 fungicides (a.i. captan, fenhexamid, kresoxim-methyl, nuarimol) under laboratory conditions. S. feltiae was tolerant to all tested insecticides and fungicides, mortality during 72 hours varied from 2.26% to 18.68 %...