Pengaruh Beberapa Insektisida terhadap Populasi Elaeidobius kamerunicus Faust. (Coleoptera: Curculionidae) di Kelapa Sawit Kebun Kalianta Riau
The Influence of Several Insecticides on Elaeidobius kamerunicus Faust (Coleoptera: Curculionidae) Population in Kalianta Oil Palm Plantation Riau
DOI:
https://doi.org/10.32734/ja.v6i3.2414Keywords:
Elaeidobius kamerunicus, insecticide, oil palm, insektisida, kelapa sawitAbstract
Elaeidobius kamerunicus is an effective pollinator weevil on oil palm. This reseach was to study the influence of several insecticides on population of E. kamerunicus. This research was conducted at the Indonesian Oil Palm Research Institute (IOPRI) Plantation unit Kalianta Riau from August to September 2016 used Randomized Group Design (RGD) non factorial with 4 kind of active ingredients insecticides, i.e : Delthametrin, Acefat, Lambda Cyhalotrin, and Bacillus thuringiensis with five replications. The results showed that all of insecticide could reduce the population of E. kamerunicus. Population of E. kamerunicus control was higher (1666 adults) than using insecticide. Insecticides that have an effect on decreasing populations of E. kamerunicus are Delthametrin (1030 adults), Asefat (1209 adults), Lambda Cyhalotrin (1070 adults). E. kamerunicus at the female flowers before treatment (5966 adults) than after treatmen (3987 adults). The appearance of new beetle was not much different for all treatments, its reduced on the non-treated plants (162 insects) compared to post treated plants with active ingredients (108 insects), Asefat (163 insects), Lambda Cyhalotrin (125 insects), dan Bacillus thuringiensis (122 insects).
Elaeidobius kamerunicus merupakan kumbang penyerbuk paling efektif pada tanaman kelapa sawit. Penelitian ini bertujuan untuk mengetahui pengaruh berbagai insektisida terhadap populasi E. kamerunicus. Penelitian ini telah dilaksanakan di kebun kelapa sawit Pusat Penelitian Kelapa Sawit (PPKS) unit Kalianta Provinsi Riau pada bulan Agustus sampai September 2016 menggunakan Rancangan Acak Kelompok (RAK) non faktorial dengan empat jenis bahan aktif sebagai perlakuan yaitu: Delthametrin, Asefat, Lambda Cyhalotrin, dan Bacillus thuringiensis dengan lima ulangan. Hasil penelitian menunjukkan semua bahan aktif insektisida dapat menurunkan populasi E. kamerunicus di lapangan. Penurunan populasi ditunjukkan dari indikator populasi E. kamerunicus pada bunga jantan yang tidak diaplikasi insektisida lebih tinggi (1666 ekor) dibanding populasi E. kamerunicus pada bunga jantan yang diaplikasi insektisida. Insektisida yang paling berpengaruh dalam menurunkan populasi E. kamerunicus adalah insektisida berbahan aktif Delthametrin (1030 ekor), Asefat (1209 ekor), Lambda Cyhalotrin (1070 ekor). Hasil yang sama ditunjukkan pada E. kamerunicus pada bunga betina sebelum aplikasi lebih tinggi (5966 ekor) dibanding setelah aplikasi (3987 ekor). Kemunculan kumbang baru tidak jauh berbeda untuk semua perlakuan, yaitu terjadi penurunan E. kamerunicus pada tanaman yang tidak ada aplikasi insektisida (162 ekor) dibanding yang diaplikasikan insektisida berbahan aktif Delthametrin (108 ekor), Asefat (163 ekor), Lambda Cyhalotrin (125 ekor), dan Bacillus thuringiensis (122 ekor).
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