Fecha/hora: 04/06/2024 14:51:52

Biblioteca(s): | INIA Tacuarembó.
Fecha corriente: | 21/02/2014
Fecha de la última actualización: | 20/09/2019
Autoria: | BALMELLI, G.; SIMETO, S.; ALTIER, N.; MARRONI, V.; DIEZ, J.J.
Afiliación: | GUSTAVO BALMELLI HERNANDEZ, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; SOFIA SIMETO FERRARI, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; NORA ADRIANA ALTIER MANZINI, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; VIRGINIA MARRONI; JULIO J. DIEZ.
Título: | Long term losses caused by foliar diseases on growth and survival of Eucalyptus globulus in Uruguay.
Año de publicación: | 2013
Fuente/Imprenta: | New Forests, 2013, v. 44, no.2, p. 249-263.
ISSN: | 0169-4286
DOI: | 10.1007/s11056-012-9314-z
Idioma: | Inglés
Notas: | History article: Received: 17 May 2011; Accepted: 10 February 2012; Published online: 24 February 2012.
Contenido: | Eucalyptus globulus is the most important forest species in Uruguay, with more than 250,000 ha of commercial plantations. Despite its high susceptibility to diseases, production losses caused by foliar diseases have not been properly quantified in this country. This study analyzes the effects of foliar damage on growth and survival using data from a progeny test of E. globulus naturally infected by Teratosphaeria leaf disease and eucalypt rust (Puccinia psidii). The severity of leaf spots and defoliation were quantified 8 months after planting and tree growth and mortality were evaluated 2, 4 and 6 years later. The trial had a high incidence of foliar damage, with a mean leaf spot severity of 28.7% and a mean defoliation of 37%. The greatest impact of foliar damage, both on growth rate and mortality, occurred in the first 2 years after damage was assessed. During this period, leaf spot severity less than 40% and defoliation below 50% did not affect growth, while survival was affected when leaf damage was 70% or greater. By the sixth year both stem growth and survival were affected by severe foliar damage (spotting or defoliation of 80% or more), with a loss of up to 25% in diameter and an accumulated mortality over 70%. It has been established for the first time that under the intensive Uruguayan productive conditions, E. globulus trees can tolerate a relatively high degree of leaf spotting or defoliation but severe foliar damage in the first months can cause considerable production losses, putting at risk the economical viability of this species.
Palabras-Clave: | DISEASE SEVERITY; FOLIAR DISEASES; GROWTH RESPONSE; TERATOSPHAERIA SPP.
Thesagro: | ENFERMEDADES DE LAS PLANTAS; EUCALYPTUS; PUCCINIA PSIDII; URUGUAY.
Categoría del tema: | H20 Enfermedades de las plantas
Registro original: | INIA Tacuarembó (TBO)
Ejemplares: | TBO - (28925-1) - PXI - AP - PP - PP/NEW FORESTS/2013 -  -  - DIS