EFFECT OF BAGWORM Pteroma pendula Joannis ATTACK ON THE DECREASE IN OIL PALM PRODUCTIVITY

Main Article Content

Hari Priwiratama
Tjut Ahmad Perdana Rozziansha
Agus Susanto
Agus Eko Prasetyo

Abstract

Outbreak of oil palm bagworm
Pteroma pendula has been reported within the last few years in several plantations in North Sumatra. A study was conducted
to determine the impact of P. pendula attacks on oil palm productivity. Aerial photograph was taken in November 2016 and
analyzed to determine the level of damage on each palm canopy. The damage symptoms were classified onto healthy palms as
control plants (score 0), mild (score 1), moderate (score 2), severe (score 3), and very severe (score 4). The sample palms were
randomly selected and observed for the sex ratio, bunch number and bunch weight at 18 months after defoliation. The attack
of P. pendula at the highest level (score 4) caused a significant effect on sex ratio and the number of bunches produced. The
fresh fruit bunches production was declined 21.02–36.35% on palms with moderate to very severe attack (score 2–4). Similar
palms also have a potential case of inflorescences abortion 18.41–32.54%. However, the average bunch weight was not
influenced by P. pendula attack.

Article Details

How to Cite
(1)
Priwiratama, H.; Perdana Rozziansha, T. A.; Susanto, A.; Prasetyo, A. E. EFFECT OF BAGWORM Pteroma Pendula Joannis ATTACK ON THE DECREASE IN OIL PALM PRODUCTIVITY. J Trop Plant Pests Dis 2019, 19, 101-108.


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