Distribution of Pine Woolly Adelgids Infestation on Pinus merkusii Plantation in Java
Abstract: Pine woolly adelgid
is a recently found exotic pest attacking seedling up to grown plants of Pinus
merkusii plantations forest. Since its discovery, there were not much
information about it. The objectives of
this research were to study pine woolly adelgids distribution, symptoms and
indicators, and its scale of infestations on Pinus merkusii plantation in Java,
to determine the presence of any specific P. merkusii sites invaded by pine
woolly adelgids, considering the pests were native to boreal and temperate
areas. Hypothesis was pine woolly
adelgids infestation on P. merkusii in Java is consistent with their native
distribution. There were 9 Forest
Management Unit (KPH) with infested P. merkusii plantations which were located
at altitude between 900 to 1,700 m asl. with temperature ranging 16-22 ˚C and
air humidity 80-90%. This indicated that Pine Woolly Adelgids required low
temperature to survive, which was consistent with their original distribution.
Host preference with regard to scale of infestation was closely related to
temperature, altitude, and number of trees per hectare. The scale of
infestation varied among regions, from light to heavy infested/death of trees.
Penulis: Oemijati Rachmatsyah,
Ulfah Juniarti Siregar, Noor Farikhah Haneda, Dodi Nandika, Purnama Hidayat
Kode Jurnal: jpkehutanangg120008
