Varietal impact on final soil populations of Pratylenchus thornei – Macalister, Qld 2015

Abstract

Key findings • Cereal variety choice can have a large impact on Pratylenchus thornei (Pt) population build-up within paddocks, which can then affect how following crops and/or varieties perform in the rotation. • Significant differences were evident between varieties with an 8.9-fold difference in final Pt populations between the best (Commander[PBR]) and worst (Mitch[PBR]) entries. • Very susceptible varieties should be avoided in paddocks with known root lesion nematode (RLN) populations as they can increase the population to high risk levels in one season (e.g. 19.1-fold increase with Mitch[PBR]). • There was no significant difference between varieties in crown rot inoculum level that developed during the season based on postharvest PreDicta B® assessment.