Impact of increasing Pratylenchus thornei numbers on wheat yield – Come-by-Chance 2011

Abstract

Key findings • Growing the MT variety EGA Gregory[PBR] rather than the I–VI variety Strzelecki[PBR] provided a 46% yield benefit at a threshold (~2,000 Pt/kg soil) starting level of Pt and an 86% yield benefit at a 20x threshold level (~40,000 Pt/kg soil). • However, yield loss (~20%) still occurred at high Pt populations in the MT variety EGA Gregory[PBR]. • There needs to be a greater focus on the resistance of all crops and varieties within the rotation sequence to avoid the build-up of high Pt populations within paddocks.