Authors: Verhaar, MA Hijwegen, T Zadoks, JC

Citation: Ma. Verhaar et al., Improvement of the efficacy of Verticillium lecanii used in biocontrol of Sphaerotheca fuliginea by addition of oil formulations, BIOCONTROL, 44(1), 1999, pp. 73-87

Authors: Verhaar, MA Kerssies, A Hijwegen, T

Citation: Ma. Verhaar et al., Effect of relative humidity on mycoparasitism of rose powdery mildew with and without treatments with mycoparasites, Z PFLANZENK, 106(2), 1999, pp. 158-165

Authors: Verhaar, MA Hijwegen, T Zadoks, JC

Citation: Ma. Verhaar et al., Selection of Verticillium lecanii isolates with high potential for biocontrol of cucumber powdery mildew by means of components analysis at differenthumidity regimes, BIO SCI TEC, 8(4), 1998, pp. 465-477