02663naa a2200277 a 450000100080000000500110000800800410001902200230006002400390008310000140012224500920013626000090022850005210023752011740075865300630193265300240199565300270201965300090204665300180205565300220207370000190209570000140211470000160212870000140214477302270215810637772022-11-25       2022    bl uuuu     u00u1 u    #d  a1366-5863 (online)7 a10.1080/09670874.2022.21304672DOI1 aCONDE, P.  aSusceptibility of pecan cultivars to Venturia effusa in Uruguay.h[electronic resource]  c2022  aArticle history:  Received 03 May 2022, Accepted 21 September 2022, Published online: 11 November 2022. Corresponding author: Carolina Leoni, Instituto Nacional de Investigación Agropecuaria (INIA), Sistema Vegetal Intensivo. Estación Experimental Wilson Ferreira Aldunate, INIA Las Brujas, Canelones, Uruguay. mailto: cleoni@inia.org.uy -- Funding: This research was funded by The National Institute of Agricultural Research (Instituto Nacional de Investigación Agropecuaria -INIA, Uruguay) (Project INIA FR 25).  aABSTRACT.- Pecan scab caused by Venturia effusa is the main crop disease affecting leaves and fruits, resulting in defoliation and yield and fruit quality losses. Recently, pecan groves expanded into Uruguay, Brazil and Argentina, where the temperate-humid climate is conducive for scab development. Chemical control is difficult given the height of adult trees which exceeds 20&#8201;m. Therefore, the strategy consists on selecting tolerant cultivars accompanied by cultural management aimed at providing a good ventilation and light interception. The objective of this work was to assess the susceptibility of pecan cultivars to Venturia effusa in the Uruguayan agroclimatic conditions. Disease severity index (DSI) in fruits and leaves were determined in 18 cultivars throughout four consecutive seasons. Most of the cultivars evaluated were classified as resistant with fruit disease severity index (DSIF) below 2.0, being Elliott and Sumner the most resistant ones (DSIF < 1.5) while Mahan was susceptible (DSIF&#8201;>&#8201;3.0) and Apache and Wichita were very susceptible (DSIF&#8201;>&#8201;4.5). © 2022 Informa UK Limited, trading as Taylor & Francis Group  aÁREA DE RECURSOS NATURALES, PRODUCCIÓN Y AMBIENTE - INIA  aCarya illinoinensis  aDisease severity index  aScab  aScab symptoms  aTolerant cultivar1 aVILLAMIL, J.J.1 aSESSA, L.1 aZOPPOLO, R.1 aLEONI, C.  tInternational Journal of Pest Management, 2022, vol. 68, issue 4: "Uruguayan Society of Phytopathology (SUFIT): Plant protection for a sustainable agriculture", p.311-318. doi: https://doi.org/10.1080/09670874.2022.2130467