Epidemiology and new possibility of control of Plasmodiophora brassicae causal agent of clubroot of cruciferous crops in Poland.

摘要

The aim of this work was to study the effect of new chemical products (amisulbrom, cjazofamid, fluazinam and calcium cyanamide) to control clubroot on cruciferous crops in Poland. The best protective control of clubroot (Plasmodiophora brassicae) in pot trials was obtained after calcium cyanamide application as Perlka fertiliser at the doses 1000 and 1500 g/1000 litres of infested field soil. In field experiments, the products were applied using two methods: drench tray with 160 transplants using 0.5 l/tray of water solution just before planting and drench plant just after planting in the field using 100 ml/plant of water solution of each evaluated product. The best clubroot control was obtained by drenching plants just after planting using cyazofamid, amisulbrom and fluazinam (90-97% of efficacy). The effectiveness of calcium cyanamide for clubroot control in the field trial was similar to that of fluazinam application (Altima 500 SC).