Landscape context and scale differentially impact coffee leaf rust, coffee berry borer, and coffee root-knot nematodes

Crop pest and disease incidences vary as a result of landscape effects. Landscape context provides habitats of variable quality for pests and beneficial organisms. The movements of these organisms are also dependent on the connectivity status of the landscape. Here we studied three coffee pests and pathogens, to test their relationships with landscape context: a fungus, Hemileia vastatrix, causal agent of coffee leaf rust; an insect, the coffee berry borer, Hypothenemus hampei (Coleoptera: Curculionidae); and root-knot nematodes, Meloidogyne spp. We obtained significant positive correlations between coffee berry borer abundance and proportion of coffee in the landscape. We also found significant positive correlations between coffee leaf rust incidence and proportion of pasture. We propose fragmenting coffee plots with forest corridors to control coffee berry borer movements between coffee plots without favoring coffee leaf rust dispersal.

Authors:
Avelino, J.; Romero-Gurdian, R.; Cruz-Cuellar, H.F.; DeClerck, F.A.J.
Journal/Series:
Ecological Applications, 22(2)
Pages:
p.584-596
Publisher:
Ecological Society of America
Publication Year:
2012
Publication Format:
PDF
Language:
EN
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