Defects of eucalypt wood associated with frost damage in Entre Ríos, Argentina
We studied the association of visible frost damage with wood defects of Eucalyptus grandis trees affected by frost. Four months after frosts occurrence we classified 40 trees from a three-years-old stand in three classes of damage: no visible frost damage; frozen top; completely frozen crown; at the...
| Autori principali: | , |
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| Natura: | Online |
| Lingua: | spa |
| Pubblicazione: |
Instituto de Ecología, A.C.
2018
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| Accesso online: | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2431465 |
| _version_ | 1799769326183514112 |
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| author | García, María de los Ángeles Mastrandrea, Ciro Andrés |
| author_facet | García, María de los Ángeles Mastrandrea, Ciro Andrés |
| author_sort | García, María de los Ángeles |
| collection | MYB |
| description | We studied the association of visible frost damage with wood defects of Eucalyptus grandis trees affected by frost. Four months after frosts occurrence we classified 40 trees from a three-years-old stand in three classes of damage: no visible frost damage; frozen top; completely frozen crown; at the same time we measured trees height (H) and diameter at breast height (DBH) and after two years we measured 19 trees of the three classes of frost damage again and then we cut them. We also assessed the dynamic modulus of elasticity (DMoE) of the basal and the second logs and recorded the presence of pith, rot, cracks and kino on timber boards. Trees with no apparent frost damage showed significantly higher height and DBH compared with trees from the other classes, whereas by the second measurement trees with completely frozen crown presented significantly lower DBH than those from the other classes. DMoE of second logs was significantly higher in trees with no apparent frost damage compared with trees with completely frozen crown. We found rot only in timber boards from trees with frost damage, but we found no significant differences in the number of timber boards with rot between the two classes with visible frost damage. Association of cracks with frost damage was not significant. The classes of damage used in this study allowed to detect rot on tables and to differentiate trees according to DMoE of logs. |
| format | Online |
| id | oai:oai.myb.ojs.inecol.mx:article-1465 |
| institution | Madera y Bosques |
| language | spa |
| publishDate | 2018 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.myb.ojs.inecol.mx:article-14652022-11-29T22:54:37Z Defects of eucalypt wood associated with frost damage in Entre Ríos, Argentina Defectos en madera de eucalipto asociados a daños por heladas en Entre Ríos, Argentina García, María de los Ángeles Mastrandrea, Ciro Andrés visual classification cold non-destructive method modulus of elasticity plantation forests rot clasificación visual frío método no destructivo módulo de elasticidad plantaciones forestales pudrición We studied the association of visible frost damage with wood defects of Eucalyptus grandis trees affected by frost. Four months after frosts occurrence we classified 40 trees from a three-years-old stand in three classes of damage: no visible frost damage; frozen top; completely frozen crown; at the same time we measured trees height (H) and diameter at breast height (DBH) and after two years we measured 19 trees of the three classes of frost damage again and then we cut them. We also assessed the dynamic modulus of elasticity (DMoE) of the basal and the second logs and recorded the presence of pith, rot, cracks and kino on timber boards. Trees with no apparent frost damage showed significantly higher height and DBH compared with trees from the other classes, whereas by the second measurement trees with completely frozen crown presented significantly lower DBH than those from the other classes. DMoE of second logs was significantly higher in trees with no apparent frost damage compared with trees with completely frozen crown. We found rot only in timber boards from trees with frost damage, but we found no significant differences in the number of timber boards with rot between the two classes with visible frost damage. Association of cracks with frost damage was not significant. The classes of damage used in this study allowed to detect rot on tables and to differentiate trees according to DMoE of logs. En un rodal de Eucalyptus grandis afectado por heladas se estudió la asociación entre daños por heladas y defectos en la madera. Cuatro meses después de las heladas se clasificaron 40 árboles de 3 años en 3 clases de daño por heladas: sin daño aparente, ápice seco, toda la copa dañada; se les midió altura y diámetro normal (DAP) y dos años después se midieron nuevamente y se apearon 19 individuos de las 3 clases. En las dos primeras trozas se estimó el módulo de elasticidad dinámico (MOE) y en las tablas se registró presencia de médula, pudrición, grietas y kino. Los datos se analizaron con modelos mixtos, prueba LSD de Fisher, análisis de correspondencia múltiple y modelos lineales generalizados mixtos. En la primera medición los árboles sin daño aparente presentaban altura y DAP significativamente mayores a los demás. Dos años después de la primera medición los árboles que habían presentado toda la copa dañada mostraron valores de DAP significativamente menores. El MOE de las segundas trozas resultó significativamente mayor en árboles sin daño aparente comparados con los de toda la copa dañada. Solo se observó pudrición en árboles con daño visible, pero sin diferencias significativas en la proporción de tablas con pudrición en las dos clases. La asociación entre grietas y daño por heladas no fue significativa. El daño por heladas según la escala usada se asocia con pudrición en tablas y con el módulo de elasticidad de las trozas. Instituto de Ecología, A.C. 2018-10-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Artículo evaluado por pares application/pdf application/xml https://myb.ojs.inecol.mx/index.php/myb/article/view/e2431465 10.21829/myb.2018.2431465 Madera y Bosques; Vol. 24 No. 3 (2018): Otoño 2018 Madera y Bosques; Vol. 24 Núm. 3 (2018): Otoño 2018 2448-7597 1405-0471 spa https://myb.ojs.inecol.mx/index.php/myb/article/view/e2431465/1811 https://myb.ojs.inecol.mx/index.php/myb/article/view/e2431465/1884 Derechos de autor 2018 Madera y Bosques |
| spellingShingle | García, María de los Ángeles Mastrandrea, Ciro Andrés Defects of eucalypt wood associated with frost damage in Entre Ríos, Argentina |
| title | Defects of eucalypt wood associated with frost damage in Entre Ríos, Argentina |
| title_full | Defects of eucalypt wood associated with frost damage in Entre Ríos, Argentina |
| title_fullStr | Defects of eucalypt wood associated with frost damage in Entre Ríos, Argentina |
| title_full_unstemmed | Defects of eucalypt wood associated with frost damage in Entre Ríos, Argentina |
| title_short | Defects of eucalypt wood associated with frost damage in Entre Ríos, Argentina |
| title_sort | defects of eucalypt wood associated with frost damage in entre ríos, argentina |
| url | https://myb.ojs.inecol.mx/index.php/myb/article/view/e2431465 |
| work_keys_str_mv | AT garciamariadelosangeles defectsofeucalyptwoodassociatedwithfrostdamageinentreriosargentina AT mastrandreaciroandres defectsofeucalyptwoodassociatedwithfrostdamageinentreriosargentina AT garciamariadelosangeles defectosenmaderadeeucaliptoasociadosadanosporheladasenentreriosargentina AT mastrandreaciroandres defectosenmaderadeeucaliptoasociadosadanosporheladasenentreriosargentina |
