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EN
Clubroot disease is one of the most serious diseases of oilseed rape and other Brassicaceae species. The disease causual agent is an obligatory parasite – Plasmodiophora brassicae. Typical symptoms of the infection are specific round tumors on roots. Several pathotypes of P. brassicae are known. It is possible to identify the pathotypes using a root hair test or by PCR. The aim of the study was to check the possibility of using PCR to identify oilseed rape infection by P. brassicae and its P1 pathotype. Plant samples with clubroot sympthoms were colleted from Poland in 2008–2009. PCR primers specific to P. brassicae and pathotype P1 were used. Infection of 44 tested plants by P. brassicae and the presence of P1 pathotype in six samples was confirmed PCR reaction. The occurance of clubroot disease was also recorded on Shepherd’s Purse, which may be considered as a potential inoculum source of this pathogen.
EN
The mixture containing 48% propachlor and 12% trifluralin was chosen on basis of the studies reported. Herbicidal formulation Propalin 60 WP was elaborated. The herbicide is characterized by broad spectrum of activity and low cost of treatment and is recommended to control burdensome weed species in rape.
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