Biocontrol Science and Technology (2006) 16, 619-630

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M.A.B. Morandi, L.A. Maffia, E.S.G. Mizubuti, A.C. Alfenas, J.G. Barbosa and C.D. Cruz (2006)
Relationships of microclimatic variables to colonization of rose debris by Botrytis cinerea and the biocontrol agent Clonostachys rosea
Biocontrol Science and Technology 16 (6), 619-630
Abstract: Biological control of Botrytis cinerea by Clonostachys rosea is an alternative to chemical control of rose Botrytis blight in greenhouses. Environmental conditions affect the colonization of senescing and dead tissues by both fungi. The contribution of microclimatic variables to debris colonization/sporulation by both fungi was estimated by path coefficient analysis. We monitored daily values of: maximum, average, and minimum temperatures (Tmax, Tave, and Tmin), and relative humidity (RHmax, RHave, and RHmin); accumulated rainfall; vapour pressure deficit average; hours with RH > 90% (RH90); and average temperature during RH90 (Tave90). Association of variables accumulated between the first and seventh day before sampling explained colonization/sporulation variation: R2=0.81-0.86 for B. cinerea and 0.91-0.96 for C. rosea. RHmax and RH90 were the main factors that directly favoured colonization/sporulation of both fungi. Colonization/sporulation negatively correlated with RHmin, Tmin, and Tave for B. cinerea and Tmin, Tave, and Tave90 for C. rosea. The antagonist can suppress B. cinerea colonization/sporulation on rose debris under a wide range of environmental conditions.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Marcelo A.B. Morandi, Eduardo S.G. Mizubuti, Acelino C. Alfenas, Luiz A. Maffia

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
population dynamics/epizootiology
environment/habitat manipulation

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Botrytis cinerea Rosa (crop)
Clonostachys rosea (antagonist) Botrytis cinerea Rosa (crop)