Uji Keefektifan Larutan Daun Sirsak (Annona muricata) dan Biji Srikaya (Annona squamosa) Terhadap Mortalitas Larva Spodoptera exigua di Laboratorium

YUNITA PUTRI, Prof. Dr. Ir. Edhi Martono, M. Sc;Dr. Ir. Arman Wijonarko, M. Sc.

2016 | Skripsi | S1 ILMU HAMA DAN PENYAKIT TUMBUHAN

Salah satu upaya dalam menekan penggunaan pestisida kimia di lapangan adalah dengan menggunakan pestisida berbahan dasar nabati. Penelitian bertujuan untuk mengetahui keefektifan pestisida nabati yang berasal dari larutan daun sirsak dan biji srikaya untuk mengendalikan hama Spodoptera exigua. Penelitian dilakukan di Laboratorium Entomologi Terapan, Fakultas Pertanian, Universitas Gadjah Mada, Yogyakarta. Penelitian dilakukan dengan empat perlakuan pada masing-masing pestisida nabati dengan konsentrasi (40%, 50%, 60% dan 70%) pada larutan daun sirsak; (30%, 40%, 50% dan 60%) pada larutan biji srikaya; (10%, 20%, 30% dan 40%) pada campuran larutan daun sirsak dan biji srikaya. Hasil penelitian menunjukkan konsentrasi tertinggi pada setiap perlakuan pestisida nabati daun sirsak, biji srikaya, serta campuran daun sirsak dan biji srikaya bersifat efektif terhadap mortalitas Spodoptera exigua, yaitu masing-masingnya sebesar 86.66%, 80%, dan 93.33% selama 3 hari pengamatan setelah perlakuan.

One of the endeavours to reduce the use of chemical pesticide in field is by using botanical derived pesticide. This research aims to measure the effectiveness of pesticide from the emulsion of soursops leaves and srikayas seeds, to control Spodoptera exigua larvae. This study was conducted in the laboratory of Applied Entomology, University of Gadjah Mada, Yogyakarta. Four different concentration in each botanical pesticide, where the emulsion of soursops leaves was treated by concentration of 40%, 50%, 60% and 70%, the emulsion of srikayas seeds was 30%, 40%, 50% and 60%, and the mixture of soursops leaves emulsion and srikayas seed emulsion was 10%, 20%, 30% and 40%. The result of this research showed that the highest concentration in every treatment of botanical pesticide (soursops leaves, srikayas seeds and mixture both of them) is effective to control Spodoptera exigua. Mortality rate were 86.66%, 80%, and 93.33% respesctively, 3 days after treatments.

Kata Kunci : Spodoptera exigua, daun sirsak, biji srikaya, mortalitas