individual publications

• academic article

  • Specific Light-Emitting Diodes Can Suppress Sporulation of Podosphaera pannosa on Greenhouse Roses.  Plant Disease.  94:1105-1110. 2010
  • Ontogenic resistance of leaves, leaf folding and the distribution of mildew colonies in strawberry powdery mildew (Podosphaera macularis).  Phytopathology.  97. 2007
  • Overwinter survival of cleistothecia, ascospore release, and infection of strawberry by Podosphaera macularis in New York and Norway.  Phytopathology.  97. 2007
  • Use of a rainfall frequency threshold to adjust a degree-day model of ascospore maturity of Venturia inaequalis.  Plant Disease Journal.  89:198-202. 2005
  • A comparison of methods used to estimate the maturity and release of ascospores of Venturia inaequalis.  Plant Disease Journal.  88:869-874. 2004
  • Discharge and dissemination of ascospores by Venturia inaequalis during dew.  Plant Disease.  82:761-764. 1998
  • Effects of light, relative humidity, frequency of wetting, and maturity of populations on discharge of ascospores of Venturia inaequalis.  Phytopathology.  88:902-909. 1998
  • Influence of light, relative humidity, and maturity of populations on discharge of ascospores of Venturia inaequalis.  Phytopathology.  88:902-909. 1998
  • Ascospore release and infection of apple leaves by conidia and ascospores of Venturia inaequalis at low temperatures.  Phytopathology.  87:1046-1053. 1997
  • A wind tunnel for controlledenvironment studies of ascospore release by Venturia inaequalis.  Phytopathology.  86:596-601. 1996
  • Minimum criteria for infection by Venturia inaequalis, and severity of scab at different phenological stages.  Phytopathology.  86. 1996
  • Effects of temperature, humidity, and preconditioning on ascospore discharge in Venturia inaequalis.  Phytopathology.  82:1105. 1992

• article

  • Biologi/epidemiologi hos epleskurv.  Gartneryrket.  86:18-22. 1996
  • Skurv 1; Biologi/epidemiologi hos epleskurv 1996
  • New developments in forecasting the risk of apple scab.  N.Y. Fruit Quarterly.  2:5-8. 1995
  • New developments in forecasting the risk of apple scab 1995

• conference paper

  • An adaptation of the New Hampshire degree-day model to predict ascospore release of Venturia inaequalis in Norway.  IOBC Bulletin. 75-81. 2006
  • Ascospores as a potential source of spring inoculum for strawberry powdery mildew.  Nordic Assoc. Agric. Sci. Rep.. 21. 2006
  • Climatic conditions prior to green tip of apple affect ascospore maturation in Venturia inaequalis.  Pome Fruit Disease IOBC/WPRS Bulletin. 243-247. 2006
  • Recent research on ascospore discharge in Venturia inaequalis.  IOBC Bull. 39-51. 2000
  • Some recent advances in epidemiology of apple scab.  Proc. 7th Int. Cong. Plant Pathology. 50. 1998
  • Maturation and release of ascospores of Venturia inaequalis in laboratory and controlled field studies.  Bull. International Organisation for Biological Control. 1993

• document part

  • An adaptation of the New Hampshire degree-day model to predict ascospore release of Venturia inaequalis in Norway 2002
  • Some recent advances in epidemiology of apple scab 1998
  • Recent research on the epidemiology and management of apple scab.  227. 1997
  • Minimum criteria for infection by Venturia inaequalis, and severity of apple scab at different phenological stages of apple 1996
  • Effects of temperature, humidity, and preconditioning on ascospore discharge in Venturia inaequalis.  1105. 1992

• report

  • Recent research on the epidemiology and management of apple scab 1997
• Recent research on ascospore discharge in Venturia inaequalis 2000