Plant Protection Science, 2009 (vol. 45), issue 1
Apple burrknots involved in trunk canker initiation and dying of young trees
Václav KŮDELA, Václav KREJZAR, Jiban Kumar KUNDU, Iveta PÁNKOVÁ, Petr ACKERMANN
Plant Protect. Sci., 2009, 45(1):1-11 | DOI: 10.17221/38/2008-PPS 
Conditions associated with an unusually high occurrence of burrknots in two young commercial apple orchards at two locations, Těšetice and Stošíkovice, South Moravia, the Czech Republic, were analysed. In the first orchard, planted in spring 2003, the occurrence of burrknot on trees of cvs. Early Smith, Jonagold and Gala on M.9 rootstock was evaluated. In the second orchard, planted in autumn 2002, cv. Gala on M.9 rootstock was assessed. Planting material used at each location was obtained from the same commercial propagator and had been established from the same propagation stock materials. Of 60 trees per cultivar surveyed in the first orchard, incidence...
Peronospora hariotii on Buddleja in the Czech Republic
Ivana Šafránková, Jiří Müller
Plant Protect. Sci., 2009, 45(1):12-15 | DOI: 10.17221/44/2008-PPS
A downy mildew was observed on Buddleja × weyeriana Weyer ex Rehd. (B. davidii × globosa) cv. Sungold in a nursery in the northern part of the Czech Republic in July 2008. This downy mildew disease of Buddleja (Butterfly Bush) had been unknown in the country so far. Characteristics of visual symptoms and microscopic features are described. The morphology of the fungus was typical for Peronospora hariotii, conforming to the published description by GÄUMANN (1919). The sexual stage was not found. This is the first report of Peronospora hariotii causing leaf spot disease on Buddleja in the Czech Republic.
Records of Brown spot needle blight related to Lecanosticta acicola in the Czech Republic
Libor JANKOVSKÝ, Dagmar PALOVČÍKOVÁ, Miloň DVOŘÁK, Michal TOMŠOVSKÝ
Plant Protect. Sci., 2009, 45(1):16-18 | DOI: 10.17221/39/2008-PPS
There are two records of brown spot needle blight caused by L. acicola in the Czech Republic up to date. Disease was first reported on June 2007 in National Nature Reserve (NNR) Červená Blata, South Bohemia. A more recent discovery of L. acicola took place on August 2008 in the NNR Borkovická Blata. The disease was observed on 10-60 year old Pinus rotundata. Both locations with infected trees are situated inside nature conservation sites under strict protection regimes that are located approximately 50 km apart. In both sites, L. acicola occurred simultaneously with Dothistroma septospora, the red band needle...
Comparative susceptibility of different legume seeds to infestation by cowpea bruchid Callosobruchus maculatus (F.) (Coleoptera: Chrysomelidae)
George B. Swella, Deus M. K. Mushobozy
Plant Protect. Sci., 2009, 45(1):19-25 | DOI: 10.17221/525-PPS
The comparative susceptibility of seeds of ten legumes to infestation by Callosobruchus maculatus was studied in choice and no-choice experiments. Cowpea, garden pea and pigeon pea seeds recorded the significantly highest number of eggs oviposited and percentage adult emergence, the shortest developmental period, highest susceptibility indices and the highest weight loss. In a choice experiment, treatments which had a cowpea mixture recorded the maximum number of eggs deposited on that legume. The order for ovipositional preference for all legume seeds remained almost the same irrespective of the host on which C. maculatus had been...
Report on Plasmodiophorids and Related Organisms - An International Workshop held on 23rd August 2008, Torino, Italy (as a part of ICPP 2008)
Geoff R. Dixon
Plant Protect. Sci., 2009, 45(1):25-38 | DOI: 10.17221/524-PPS