Pengaruh Campuran Insektisida terhadap Ulat Bawang Spodoptera exigua Hubn.

Tonny Koetani Moekasan, Rini Murtiningsih

Abstract


ABSTRAK. Penelitian bertujuan untuk mengetahui efikasi campuran empat insektisida yaitu spinosad (Tracer), metomil (Metindo), tiodikarb (Larvin), dan klorpirifos (Dursban) terhadap larva Spodoptera exigua pada tanaman bawang merah di lapangan. Penelitian dilaksanakan pada bulan April sampai September 2007 di Desa Kendawa, Kecamatan Jatibarang, Kabupaten DT II Brebes, Jawa Tengah (± 2 m dpl.). Delapan perlakuan termasuk kontrol dan pembanding diuji menggunakan rancangan acak kelompok dan masing-masing perlakuan diulang empat kali. Perlakuan yang diuji adalah (a) spinosad + metomil, (b) spinosad  + tiodikarb, (c) klorpirifos  + metomil, (d) spinosad, (e) tiodikarb, (f) klorpirifos, (g) metomil, dan (h) kontrol. Hasil penelitian menunjukkan bahwa dari ketiga macam campuran yang diuji, campuran spinosad + metomil paling efektif menekan S. exigua dan dapat mempertahankan hasil panen bawang merah. Selain itu berdasarkan harga resmi pestisida pada tahun 2007, harga  campuran insektisida spinosad + metomil  lebih murah jika dibandingkan dengan harga spinosad tunggal. Selisih pendapatan dalam perlakuan campuran spinosad + metomil lebih tinggi dengan selisih pendapatan perlakuan spinosad tunggal.

ABSTRACT. Moekasan, T.K. and R. Murtiningsih. 2010. The Effect of Insecticides Combination Against Beat Armyworm Spodoptera exigua Hubn. The purpose of the study was to determine the efficacy of combination of four insecticides, i.e. spinosad (Tracer), methomyl (Metindo), thiodicarb (Larvin), and chlorpyrifos (Dursban) against beat armyworm, S. exigua on shallots. The experiment was conducted from April until September 2007 at Kendawa Village, Jatibarang Subdistrict, Brebes District, Central Java (± 2 m asl). The treatments were (a) spinosad + methomyl, (b) spinosad + thiodicarb, (c) chlorpyrifos + methomyl, (d) spinosad, (e) thiodicarb, (f) chlorpyrifos, (g) methomyl, and (h) check. The treatments were arranged in a randomized block design with four replications. The results showed that spinosad + methomyl was the most effective insecticide combination to suppress S. exigua. This combination could sustain the high yield and the price of spinosad + methomyl combination was cheaper than the spinosad price singly. Therefore, the application of spinosad + methomyl was more profitable compare to spinosad singly.

Keywords


Allium ascalonicum; Campuran insektisida; Spodoptera exigua.



DOI: http://dx.doi.org/10.21082/jhort.v20n1.2010.p%25p

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