UJI EFEKTIFITAS BEBERAPA ENTOMOPATOGEN PADA IMAGO PENGGEREK BUAH KAKAO Conopomorpha cramerella Snellen (Lepidoptera: Gracillariidae) Di LABORATORIUM

Yusuf Sugianto, Yuswani Pangestiningsih, Syahrial Oemry

Abstract


The effectivity of some entomopathogenic imago cocoa fruit borer
Conopomorpha cramerella Snellen (Lepidoptera: Gracillariidae) in the Laboratory. The
objective of this research was to evaluate the effectifity of entomophatogen (B. bassiana,
M. anisopliae and P. fumosoroseus) with different concentration level. The experiment was
conducted at the Laboratory Plant Pests, Faculty of Agriculture, University of Sumatra utara,
Medan. From August to October 2012, using a completely randomized design (RAL) non
factorial of 7 treatments and 3 replications. The treatments were L0 (control),
L1 (M. anisopliae 40gr/1l), L2 (M. anisopliae 50gr/1l), L3 (B. bassiana 40gr/1l),
L4 (B. bassiana 50gr/1l), L5 (P. fumosoroseus 40gr/1l), and L6 (P. fumosoroseus 50gr/1l).
The results showed that 50gr/1l M. anisopliae is effective to control imago C. cramerella
(100%), followed by treatments B. bassiana 50gr/1l, M. anisopliae 40gr/1l, and
P. fumosoroseus 50gr/1l, the high number of imago C. cramerella overgrown
entomopathogenic fungus colony found in 50gr/1l M. anisopliae (60%), followed by
treatments of P. fumosoroseus 50gr/1l, M. anisopliae 40gr/1l, B. bassiana 50gr/1l,
B. bassiana 40gr/1l, while P. fumosoroseus 40gr/1l is less effective, and the behavior of death
imago C. cramerella entomopathogenic fungus infected seen with characteristic imago being
lazy move, the longer the body becoming limp and dead, and that eventually hardened
mycelium covered by different colors namely M. anisopliae has green colour, B. bassiana has
white colour, P. fumosoroseus has yellowish white colour.
Keywords : entomopathogenic, cocoa, Conopomorpha cramerella

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Program studi Agroteknologi

Fakultas Pertanian

Jl. Prof. A. Sofyan no. 3

Kampus Universitas Sumatera Utara

Padang Bulan- 20155

Medan-Sumatera Utara

E ISSN (2337-6597)