Lagged association between powdery mildew leaf severity, airborne inoculum, weather, and crop losses in strawberry.

摘要: ABSTRACT Knowledge about epidemiology and the impact of disease on yield is fundamental for establishing effective management strategies. The purpose this study was to investigate relationship between foliar strawberry mildew severity, Podosphaera aphanis airborne inoculum concentration, weather, subsequent crop losses day-neutral strawberry. experiment conducted at three, five, four sites in 2006, 2007, 2008, respectively, a total 12 epidemics. At each site, data were collected 25 plants 2-day intervals from end May early October 60 62 samplings annually. First, seasonal statistically described; then, lagged regression model developed describe parameters that significantly associated with losses. There strong positive linear area under leaf progress curve (R2 = 0.90) daily mean conidia concentration (R2...