NDLI: Contribution of host and environmental factors to the hyperparasitism of coffee rust under field conditions

Content Provider	Springer Nature Link
Author	Martins, S. J. Soares, A. C. Medeiros, F. H. V. Santos, D. B. C. Pozza, E. A.
Copyright Year	2015
Abstract	Coffee rust is a devastating disease but its paratism by Lecanicillium lecanii is assumed as having little role in the disease progress. However, recent evidence showed that the ecology of the multitrophic interaction is more complex but the factors that contribute for Hemileia vastatrix parasitism have only started to be addressed. Surveys of rust and its parasitism in a coffee plantation where no fungicide was used were carried out to find out the contribution of the plant characteristics and environmental conditions on the dynamics of coffee rust and its parasitism by L. lecanii. Throughout the year, rust incidence/severity and hyperparasite presence were assessed monthly on leaves. The maximum parasitism was found in the dry season with high rates on the east-facing side of the plant rather than on the west-facing side. There was a positive correlation between hyperparasite incidence and rust incidence/severity, regardless of the plant parts or season and a stronger correlation in the upper part of the plant. H. vastatrix and L. lecanii were more frequently found at higher temperatures. The abiotic environmental factors as well as plant features play a strong role in epidemic rust and on its natural enemy. The results from this work showed that disease control strategies should take such factors and plant features into consideration in the integrated management of coffee rust, to rationally manage fungicide application and therefore both reduce production costs and the risk of the emergence of fungicide insensitive H. vastatrix populations.
Starting Page	605
Ending Page	610
Page Count	6
File Format	PDF
ISSN	08153191
Journal	Australasian Plant Pathology
Volume Number	44
Issue Number	6
e-ISSN	14486032
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-09-18
Publisher Institution	Australasian Plant Pathology Society
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Coffea arabica Hyperparasite Brazil Biocontrol Multitrophic interactions Plant Pathology Plant Sciences Agriculture Entomology Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science

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