Combate del moho gris (botrytis cinerea) de la fresa mediante gliocladium roseum

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EVALUATION OF MICRO-ORGANISMS FOR BIOCONTROL: BO TRYTIS ClNEREA AND STRAWBERRY, A CASE STUDY

j.c.

Sutton

Department of Environmental Biology, University of Guelph, Guelph,Ontario, Canada, N1G 2W1

I. II. III. IV.

Introduction Socioeconomic Goals and Obligations in Biocontrol Research Objectives Background Perspectives A. Strawberry CroppingSystems B. Pathogen Ecology and Gray Mold Epidemiology C. Disease Management Strategies D. Conventional Disease Management E. Selection of Biocontrol Organisms - the Challenge V.Biocontrol Research A. Selection of Organisms B. Biocontrol Tests C. Vectoring of Biocontrol Organisms by Bees D. Biocontrol Mechanisms of Gliocladium roseum VI. Conclusions andFuture Directions Acknowledgments References

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I. I N T R O D U C T I O N
Communities of indigenous organismsin cropping systems are vast and relatively unexploited reservoirs of antagonistic organisms that can suppress plant pathogens in developing crops, in crop residues and in thecrop environment (Cook and Baker, 1983; Cook, 1993; Sutton and Peng, 1993). The antagonists usually are fungi, prokaryotes and microfauna, but larger arthropods and otherorganisms can also be important. Crop rotation, tillage methods, application of organic amendments and other cultural practices frequently capitalize on indigenous organisms tosuppress pathogens. Indigenous organisms also can be isolated, evaluated for antagonism of pathogens, and introduced into crops as biocontrol agents. Experimental introduction ofantagonists to suppress pathogens of ADVANCES IN PLANT PATHOLOGY--VOL. 11 ISBN 0-12-033711-8

Copyright 1995 Acadanic PressLimited 9 All rights of reproductionin anyform reserved

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