Document details

Damage of Oncideres saga in plantations of Acacia mearnsii in Rio Grande do Sul State, Brazil

Author(s): Magistrali, Iris Cristiane ; Costa, Ervandil Corrêa ; Garlet, Juliana ; Boscardin, Jardel ; Machado, Leonardo Mortari

Date: 2013

Origin: Oasisbr

Subject(s): Praga Florestal; Serrador; Galhos; Posturas; Forest pest; Twig girdler; Branches; Posture


Description

The objective of this study was to characterize the damage caused by Oncideres saga in plantations of Acacia mearnsii. The percentage of trees attacked was evaluated and  the diameter and length of the branches were measured. It was observed that 34.3 % of the trees of A. mearnsii presented branches cut by O. saga. The average diameter and length of the cut branches were 5.75 cm and 4.95 m, respectively. The lower third of the girdled branches showed 64.23% of the posture incisions.

O objetivo deste trabalho foi caracterizar os danos causados por Oncideres saga em plantios de Acacia mearnsii. Foi avaliada a porcentagem de árvores atacadas, sendo mensurados o diâmetro e comprimento dos galhos atacados. Verificou-se que 34,3% das árvores apresentavam galhos cortados por O. saga. O diâmetro e o comprimento médio dos galhos cortados foram de 5,75 cm e 4,95 m, respectivamente. O terço inferior dos galhos roletados apresentou 64,23% das incisões de postura.

Document Type Journal article
Language Portuguese
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