Analisis kemiripan komunitas artropoda predator hama padi penghuni permukaan tanah sawah rawa lebak dengan lahan pinggir di sekitarnyaSimilarity analysis of predatory arthropods inhabiting the surface area of swampy rice field and its surrounding ABSTRAKDi Sumatera Selatan luas lahan rawa lebak 1,4 juta ha, 12% dimanfaatkan sebagai sawah dan perkebunan, sisanya belum dikelola. Penelitian ini bertujuan mengetahui kemiripan komunitas artropoda predator penghuni permukaan tanah sawah rawa lebak dengan lahan pinggir yang berada di sekitarnya. Penelitian dilakukan di Kabupaten Ogan Ilir, Kabupaten Musi Banyuasin, dan Kota Palembang, Sumatera Selatan. Di setiap lokasi dipilih empat tipe habitat rawa lebak, berupa pertanaman padi, semak-semak, padang ilalang, dan hamparan gulma berdaun lebar. Pengambilan sampel artropoda predator penghuni tanah menggunakan perangkap sumuran. Pemasangan perangkap dilakukan sebanyak lima kali, yaitu 15 hari sebelum padi ditanam, saat tanaman padi berumur 1, 2, dan 3 bulan, serta 15 hari setelah panen. Hasil penelitian menunjukkan kelimpahan relatif artropoda predator di permukaan tanah di pertanaman padi adalah 95,03% dan di habitat lahan pinggir disekitar pertanaman padi adalah 95,12-97,21%. Keanekaragaman spesies artropoda predator di permukaan tanah pada habitat padi dengan habitat lahan pingir menunjukkan tingkat kemiripan 0,73-0,84. Habitat lahan pinggir di sekitar pertanaman padi dapat menjadi penampung artropoda predator dan sumber musuh alami hama tanaman padi pada musim tanam padi berikutnya. Kata kunci: padi, lahan persawahan, pengendalian hayati ABSTRACTThere are approximately 1.4 million hectares of swampy area in South Sumatera, but only 12% of those are being used as farm and plantation. The purpose of this research was to investigate the similarity of arthropod community inhabiting swampy rice field and its surrounding area. This research was conducted in South Sumatera Province covering regency of Musi Banyuasin and Palembang. Four types of swampy area were selected from each location, i.e. rice field, thicket, bush, and swampy land inhabited by broad-leaf weeds. Pitfall trap used to collect arthropod and it installed at five different times. i.e. 15 days before rice planting, one month, two months, and three months after planting, and 15 days after harvest time. The result showed that relative abundance of predatory arthropod dwelling soil in rice field was 95.03%, and habitat surrounding rice field was 95.12-97.21%. The level of similarity of arthropod species between rice field ecosystem and PENDAHULUANLuas lahan rawa lebak di Sumatera Selatan ada sekitar 1,4 juta ha, 12% dimanfaatkan sebagai lahan pertanian, berupa sawah, lahan perkebunan, dan sisanya masih belum dikelola (BPS 2007). Di ekosistem sawah rawa lebak Sumatera Selatan belum pernah dilaporkan terjadinya peledakan populasi hama padi. Diduga hal itu ada kaitannya dengan budi daya tanaman padi di sawah rawa lebak Sumatera Selatan yang tidak mengaplikasikan pestisida.Tumbuhan liar berupa tumbuhan semak semusi...
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