Template-Type: ReDIF-Article 1.0 Author-Name: editors Title: Index of Volume 42 Journal: Plant Protection Science Pages: I-VI Volume: 42 Issue: 4 Year: 2006 DOI: 10.17221/2766-PPS File-URL: http://pps.agriculturejournals.cz/doi/10.17221/2766-PPS.html File-Format: text/html Handle: RePEc:caa:jnlpps:v:42:y:2006:i:4:id:2766-PPS Template-Type: ReDIF-Article 1.0 Author-Name: Katarína Adamčíková Author-Workplace-Name: Institute of Forest Ecology of the Slovak Academy of Sciences, Branch of Woody Plant Biology Nitra, Nitra, Slovak Republic Author-Name: Gabriela Juhásová Author-Workplace-Name: Institute of Forest Ecology of the Slovak Academy of Sciences, Branch of Woody Plant Biology Nitra, Nitra, Slovak Republic Author-Name: Marek Kobza Author-Workplace-Name: Institute of Forest Ecology of the Slovak Academy of Sciences, Branch of Woody Plant Biology Nitra, Nitra, Slovak Republic Title: Genetic diversity of Cryphonectria parasitica population in the Štiavnicko-krupinská subpopulation in Slovakia Abstract: The structure of C. parasitica populations was evaluated in Štiavnicko-krupinská subpopulation in Slovakia. A total of four vegetative-compatibility (vc) types were detected among the sample of 215 isolates, which respond to following European vc types: EU-12, EU-2, EU-13, and EU-8. Number of vc types on single sites varied between one and four. One vc type (EU-12) was the dominant in Štiavnicko-krupinská subpopulation. This vc type (EU-12) comprised 93% of all isolates and was found on each site. Two vc types were represented by only one or two isolates. The observed vc type frequencies were compared with expected vc type frequencies. The χ2 test showed that the observed vc type frequencies differed significantly from the frequencies expected under random mating. Keywords: chestnut blight, Cryphonectria parasitica, vc group, Castanea sativa Journal: Plant Protection Science Pages: 119-124 Volume: 42 Issue: 4 Year: 2006 DOI: 10.17221/2767-PPS File-URL: http://pps.agriculturejournals.cz/doi/10.17221/2767-PPS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/pps-200604-0002.txt Handle: RePEc:caa:jnlpps:v:42:y:2006:i:4:id:2767-PPS Template-Type: ReDIF-Article 1.0 Author-Name: Jan Hubert Author-Workplace-Name: Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic Author-Name: Marie Němcová Author-Workplace-Name: Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic Author-Workplace-Name: State Phytosanitary Administration, Prague-Ruzyně, Czech Republic Author-Name: Gamila Aspaly Author-Workplace-Name: Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic Author-Workplace-Name: Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic Author-Name: Václav Stejskal Author-Workplace-Name: Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic Title: The toxicity of bean flour (Phaseolus vulgaris) to stored-product mites (Acari: Acaridida) Abstract: Legume proteins were shown to have insecticidal activity against stored-product pests. Grain enriched by bean (Phaseolus vulgaris) flour inhibits the growth of stored-product mites. In this study, we tested the toxicity of bean flour to storage mites under optimal conditions for their population growth (i.e. rearing diet, temperature: 25C and humidity optimum: 85% RH). Bean flour was added to the diet in one of eight concentrations: 0, 0.01, 0.1, 0.5, 1, 2.5, 5, 10%). The population growth of Tyrophagus putrescentiae, Acarus siro and Aleuroglyphus ovatus initiating from a density of 50 mites per 0.2 g of diet was recorded for 21 days. The enrichment of grain with bean flour suppressed the population growth of the tested species. These differed in their sensitivity to bean flour. Population growth was decreased to 50% in comparison to the control (rC50) by the bean flour concentration of 0.02% in T. putrescentiae, 0.04% in A. siro, and by 4.87% in A. ovatus. The concentration of 5% bean flour in diets kept populations of A. siro and T. putrescentiae at the initial level. The results are discussed in the context of applying bean flour in the integrated control of stored-product mites. Keywords: botanical acaricides, mite, storage, grain, food safety Journal: Plant Protection Science Pages: 125-129 Volume: 42 Issue: 4 Year: 2006 DOI: 10.17221/2770-PPS File-URL: http://pps.agriculturejournals.cz/doi/10.17221/2770-PPS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/pps-200604-0003.txt Handle: RePEc:caa:jnlpps:v:42:y:2006:i:4:id:2770-PPS Template-Type: ReDIF-Article 1.0 Author-Name: Lucius J. Bamaiyi Author-Workplace-Name: Department of Crop Protection Institute for Agricultural Research and Author-Name: Iliya S. Ndams Author-Workplace-Name: Department of Biological Sciences, Ahmadu Bello University, Zaria, Nigeria Author-Name: Williams A. Toro Author-Workplace-Name: Department of Crop Protection Institute for Agricultural Research and Author-Name: Sarah Odekina Author-Workplace-Name: Department of Crop Protection Institute for Agricultural Research and Title: Effect of mahogany Khaya senegalensis seed oil in the control of Callosobruchus maculatus (Fab.) (Coleoptera: Bruchidae) on stored cowpea. Abstract: Khaya senegalensis seed oil was evaluated for its efficacy in the control of Callosobruchus maculatus on stored cowpea. The oil was extracted locally from the dry K. senegalensis seeds. This was compared with Pirimiphos methyl E.C. as a standard. There was almost complete adult mortality of C. maculatus at 24 h after treatment with seed oil at 1, 2 and 3 ml/100 g of cowpea. The seed oil significantly reduced the F1 and F2 progeny emergence. The reduction in oviposition was not significant when compared with the control. The damage caused by C. maculatus was significantly reduced by K. senegalensis seed oil. For all the parameters examined, K. senegalensis seed oil showed no significant difference with Pirimiphos methyl E.C. in the control of C. maculatus, suggesting that K. senegalensis seed oil has high potential for use as botanical resource for control of C. maculates. Keywords: K. senegalensis seed oil, Pirimiphos methyl E.C., C. maculates, cowpea grains, bioassay Journal: Plant Protection Science Pages: 130-134 Volume: 42 Issue: 4 Year: 2006 DOI: 10.17221/2765-PPS File-URL: http://pps.agriculturejournals.cz/doi/10.17221/2765-PPS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/pps-200604-0004.txt Handle: RePEc:caa:jnlpps:v:42:y:2006:i:4:id:2765-PPS Template-Type: ReDIF-Article 1.0 Author-Name: Andrea Barteková Author-Workplace-Name: Faculty of Natural Sciences, Constantine the Philosopher University, Nitra, Slovak Republic Author-Name: Ján Praslička Author-Workplace-Name: Faculty of Natural Sciences, Constantine the Philosopher University, Nitra, Slovak Republic Title: The effect of ambient temperature on the development of cotton bollworm (Helicoverpa armigera Hübner, 1808) Abstract: The development of individual cotton bollworm stages depending on the ambient temperature was studied in laboratory conditions. The effect of temperature on the development of all stages of Helicoverpa armigera was studied at three constant temperatures of 20, 25, and 30°C in temperature-controlled chambers. The temperature dependence of the developmental rates and the thermal thresholds were established by means of linear regression. Our data has established following optimal temperatures: the lower thermal threshold for the development of the Helicoverpa armigera eggs is 14.83°C, for the development of the larvae is 11.34°C and for the development of the pupae is 8.18°C. The termal constant for the development of the Helicoverpa armigera eggs is 64.10 day-degrees, for the development of the larvae is 344.83 day-degrees and for the development of the pupae is 222.22 day-degrees. The lower thermal threshold for the total Helicoverpa armigera development is 11.50°C and the thermal constant is 625.00 day-degrees. Keywords: cotton bollworm, Helicoverpa armigera, development, thermal constants, temperature Journal: Plant Protection Science Pages: 135-138 Volume: 42 Issue: 4 Year: 2006 DOI: 10.17221/2768-PPS File-URL: http://pps.agriculturejournals.cz/doi/10.17221/2768-PPS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/pps-200604-0005.txt Handle: RePEc:caa:jnlpps:v:42:y:2006:i:4:id:2768-PPS Template-Type: ReDIF-Article 1.0 Author-Name: Václav Kůdela Author-Workplace-Name: Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic Author-Name: Václav Krejzar Author-Workplace-Name: Division of Plant Medicine, Research Institute of Crop Production, Prague-Ruzyně, Czech Republic Title: First report of anthracnose of common snowberry caused by Sphaceloma symphoricarpi in the Czech Republic Abstract: During the first part of July, 2006, a severe outbreak of disease on common snowberry shrubs, Symhoricarpos albus var. laevigata, was observed in some city ornamental parks and small gardens in Prague and its environs. Based on disease symptoms and pathogen characteristics both on leaves, shoots, fruits and in culture, it can be concluded that the outbreak of anthracnose on common snowberry was caused by Sphaceloma symphoricarpi Barus & Horsfall 1928. This is probably the first record of S. symphoricarpi in the Czech Republic. Of the surveyed Symphoricarpos species and varieties, i.e. S. albus var. albus, S. albus var. laevigata, S. orbiculatus, S. doorenbosii, and S. chenaultii, only S. albus var. laevigata was attacked by the pathogen. Common snowberry shrubs having semipendent branches appeared to be more susceptible than shrubs with upright ones. Disease symptoms and pathogen characteristics are described and illustrated. The analysis of meteorological data indicated that the outbreak of anthracnose of common snowberry might have been related with rainy and mild weather during May, and especially with a rainy period of 7 days at the end of May and beginning of June. Keywords: Symphoricarpos albus var. laevigata, Sphaceloma symphoricarpi, anthracnose, occurrence in the Czech Republic Journal: Plant Protection Science Pages: 139-146 Volume: 42 Issue: 4 Year: 2006 DOI: 10.17221/2769-PPS File-URL: http://pps.agriculturejournals.cz/doi/10.17221/2769-PPS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/pps-200604-0006.txt Handle: RePEc:caa:jnlpps:v:42:y:2006:i:4:id:2769-PPS