Study of Ecological Aspect of Locust migratory (Locusta migratoria L ) (Orthoptera Acrididae) and the Application of BioInseticide in Regency of Timor Tengah Utara and Belu Province Nusa Tenggara

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KAJIAN ASPEK EKOLOGI BELALANG KEMBARA

(Locusta migratoria,

L.) (Orthoptera: Acrididae) DAN APLlKASI

BIO-INSEKTISIDA DALAM PENGENDALIANNYA

DI KABUPATEN TIMOR TENGAH UTARA DAN BELU

PROPINSI NUS A TENGGARA TIMUR

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NIKOLASNIK

SEKOLAH PASCASARJANA

INSTITUT PERTANIAN BOGOR

BOGOR

2009

PERNYATAAN MENGENAI TESIS DAN

SUMBER INFORMASI

Dengan ini saya menyatakan bahwa tesis Kajian Aspek Ekologi Belalang

Kembara (Locusta migratoria L.) (Orthoptera: Acrididae) dan Aplikasi

Bio-Insektisida dalam Pengendaliannya di Kabupaten Timor Tengah Utara dan Belu Propinsi Nusa Tenggara Timur adalah karya saya dengan arahan komisi pembimbing. Penelitian ini belum pemah diajukan untuk memperoleh gelar pada

ｰｲｯｧｲｾ＠ sejenis di perguruan tinggi lain. Semua data dan informasi yang

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Nikolas Nik

ABSTRACT

NIKOLAS NIK. 2009. Study of Ecological Aspect of Locust migratory

(Locusta migratoria L.) (Orthoptera : Acrididae) and the Application of Bio-Inseticide in Regency of Timor Tengah Utara and Belu Province Nusa Tenggara Timur supervised by DADANG and IDHAM SAKTI HARAHAP

ｾ ｯｲｮ＠ is a staplefood, other than rice, for people of Nusa Tenggara Timur.

This

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is commonly cultivated in dry land area together with others crops such

as rici cucumber, peanut, etc. In 2007/2008 migratory locust, (Locusta

migratlJrfa L.,) attacked corn and rice plantation in Kabupaten of Timor Tengah Utara -6nd Belu and damaging the majority of corn and rice plantation. Due to this plagueiiifood supplies for local people were threatened. In order to control this pest, a ltudy of ecology of migratory locust and their control method using Green

ｇｵ｡ｲ､ｾ ｏｏ＠ ULV (contain spores of Metarhizium anisopliae L.) were conducted. The objctives of these researches were 1) to study the characteristic of migratory locust habitat; 2) to study the effect of soil moisture on locust egg hatching, 3) to

study

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morphometry in relation to their phase development, 4) to study the

efficaci of Green Guard® 300 UL V (GG) against migratory locust nymphs .

....

ｈ｡｢ｩｴ｡ｾ ｨ｡ｲ｡｣ｴ･ｲｩｳｴｩ｣＠ (vegetation, soil texture, and altitude) was observed in 34

sampie3areas (1 m2) in 5 Kecamatan. The effect soil moisture on egg hatching

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using clay, clay sandy loam, and sandy loam with soil moisture of

40%, ｾ ＥＬ＠ 80% and 100%. In morphometric studies the length of elytra, the

lengthl hind leg femur, and the width of head were measured. Efficacy of Green

Guard 0300 UL V against _1. migratoria conducted using GG 100%, GG 1 :50, GG

1: 1000?-GG 1 :3000 (in vegetable oil) and control. The result showed that the highest egg pods laid was found at the area covered with grass in sandy clay soil with the altitude between 0-100 m above sea level. The highest percentage of egg

hatching was found at clay sandy loam soil with the of moisture 80%.

Morphometric studies revealed that between February to April 2009 there were more solitary individuals than transient, however some individuals belong to gregarious phase. The efficacy test of Green Guard® 300 UL V showed that the highest nymphs mortality was found on the concentration of 100% GG.

Key

word: Locusta migratoria L,. habitat, egg hatching, morphometric, Green

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