Identifying key factors affecting coffee leaf rust incidence in agroforestry plantations in Peru

Coffee leaf rust (CLR), caused by Hemileia vastarix , is one of the most serious diseases of coffee plantations and cause great losses in coffee production. We aimed to examine coffee varieties, shade, age of coffee plants, coffee plant density and soil properties in relation to CLR infection. To do...

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Bibliographic Details
Published in:Agroforestry systems 2018-12, Vol.92 (6), p.1551-1565
Main Authors: Ehrenbergerová, Lenka, Kučera, Aleš, Cienciala, Emil, Trochta, Jan, Volařík, Daniel
Format: Article
Language:English
Subjects:
Age
Agriculture
Agroforestry
Biomedical and Life Sciences
Coffee
Dry season
Forestry
Incidence
Leaf rust
Leaves
Life Sciences
Plant diseases
Plantations
Planting density
Rainy season
Seasons
Shade
Shading
Soil properties
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Summary:Coffee leaf rust (CLR), caused by Hemileia vastarix , is one of the most serious diseases of coffee plantations and cause great losses in coffee production. We aimed to examine coffee varieties, shade, age of coffee plants, coffee plant density and soil properties in relation to CLR infection. To do this, we established a total of 75 plots in three agroforestry coffee plantations in the central Peruvian Amazon. We gathered data there in 2011 (dry season) on the presence/absence of CLR; coffee variety; age and density of coffee plants, and also took hemispherical photographs to determine canopy openness. In 2014 (wet season), we again gathered data on the same variables. In 2012, we collected soil samples from a subset of the plots. At all plantations, coffee variety had a significant effect on CLR incidence, with the Catimor variety infected less frequently than Caturra. Coffee plant age had a significant positive effect on CLR incidence. Increasing coffee density also increased CLR incidence for some of the studied plantations/seasons. Comparing those plots from which data were collected in the dry and wet seasons, we found that CLR presence was significantly higher in the wet season. The effect of shade on CLR incidence was not clear. Catimor and Caturra varieties showed opposite trends of CLR incidence in response to shade quantity in most cases (Caturra variety CLR incidence was decreasing with shading increase and Catimor CLR incidence decreasing with decreasing shading). Finally, the soil properties did not affect CLR incidence.
ISSN:0167-4366
1572-9680
DOI:10.1007/s10457-017-0101-x