Shade effects on the dispersal of airborne hemileia vastatrix uredospores

Phytopathology 106(6):572-580

dc.creatorBoudrot, Audrey
dc.creatorPico, Jimmy T.
dc.creatorMerle, Isabella
dc.creatorGranados, Eduardo
dc.creatorVilchez, Sergio
dc.creatorTixier, Philippe
dc.creatorVirginio Filho, Elias de Melo
dc.creatorCasanoves, Fernando
dc.creatorTapia, Ana|
dc.creatorAllinne, Clémentine
dc.creatorRice, Robert A.
dc.creatorAvelino, Jacques
dc.date2018-08-01T20:03:39Z
dc.date2018-08-01T20:03:39Z
dc.date2016
dc.date.accessioned2023-08-11T22:43:58Z
dc.date.available2023-08-11T22:43:58Z
dc.identifier*EC-INIAP-BEECA-NM. Joya de los Sachas (Phytopathology 106(6):572-580)
dc.identifierhttp://repositorio.iniap.gob.ec/handle/41000/5066
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8271789
dc.descriptionHemileia vastatrix caused a severe epidemic in Central America in 2012-13. The gradual development of that epidemic on nearly a continental scale suggests that dispersal at different scales played a significant role. Shade has been proposed as a way of reducing uredospore dispersal. The effect of shade (two strata: Erythrina poeppigiaiia below and Chloroleucon eurycyclum above) and full sun on H. vastatrix dispersal was studied with Burkard traps in relation to meteorological records. Annual and daily patterns of dispersal were observed, with peaks of uredospore capture obtained during wet seasons and in the early afternoon. A maximum of 464 uredospores in 1 day (in 14.4 m3 of air) was recorded in October 2014. Interactions between shade/full sun and meteorological conditions were found. Rainfall, possibly intercepted by tree cover and redistributed by raindrops of higher kinetic energy, was the main driver of uredospore dis-persal under shade. Wind gusts reversed this effect, probably by inhibiting water accumulation on leaves. Wind gusts also promoted dispersal under dry conditions in full sun, whereas they had no effect under shaded conditions, probably because the canopy blocked the wind. Our results indicate the importance of managing shade cover differentially in rainy versus dry periods to control the dispersal of airborne H. vastatrix uredospores.
dc.formatp. 572-580
dc.formatapplication/pdf
dc.languageen
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Ecuador
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/ec/
dc.subjectCAFÉ
dc.subjectROYA DEL CAFE
dc.subjectAGROFORESTERÍA
dc.subjectCOSTA RICA
dc.titleShade effects on the dispersal of airborne hemileia vastatrix uredospores
dc.titlePhytopathology 106(6):572-580
dc.typeRevista
dc.typeArtículo
dc.coverageE. E. Central Amazónica


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