Monitoring of the diamondback moth (<i>Plutella xylostella</i> L.) on the <i>Brassica oleracea</i> L. collection in the vicinity of St. Petersburg

Background. Diamondback moth ( Plutella xylostella L.) has now acquired the status of most dangerous pest plants from Brassicaceae family in world, including Russia. In order to identify genotypes resistant pest, cabbage accessions VIR global collection were assessed field according plant infestation and damage by diamondback vicinity St. Petersburg. Materials methods . The was on model when examining all plot (1) number larvae pupae, (2) leaf damage, using a standard scoring scale. adults monitored sticky Delta traps two designs: cardboard equipped with commercial dispensers synthetic sex pheromone, plastic LED designed at VIZR. Results results surveys attested very high variation among rates caused moth. data abundance caught pheromone correlated well estimates larval pupal density plants. capture rate moths varied greatly during season. June/early July, i.e., period so called “white” nights, much worse than ones, but second half July August their significantly exceeded that traps. As result, relationship between numbers turned out be negative. Conclusion. resulting materials indicate obvious prospects studying sources host resistance this northern regions its spreading is recommended controlled