This study was carried out to evaluate the effects of
Lampetis nigerrima
on three-month old eucalypt and
pruning training, applied five months after the occurrence of this beetle. The studies were conducted in
cultured clonal
Eucalyptus grandis
vs
Eucalyptus urophylla
. Twelve hundred trees were analyzed through a
delimitation of four randomized blocks with 400 trees per treatment. The treatments were: T1 = trees with
canopies and shoots without damages by
Lampetis nigerrima beetles (witnesses); T2 = trees with canopies
and shoots were damaged by
Lampetis nigerrima beetles, but were pruned; and, T3 = trees with canopies
and shoots were damaged by
Lampetis nigerrima beetles but did not receive correction pruning. The growth
and wood production of trees were evaluated up to 32 months of age, based on height (Ht), chest height
diameter (DAP) and quality of the main stem. Trees not damaged by
Lampetis nigerrima presented, 29
months after the attack of the beetle, wood production greater than damaged trees without pruning. Pruning
training reduces the loss of height growth and increases the quality of stems of trees damaged or pruned
in comparison with those without pruning. The attack of the
Lampetis nigerrima on eucalypt plantations
impairs the quantity and quality of wood production. This beetle can be considered as another important
forest pest in forestry in Brazil.
