Manurung, Devy Fristanty (2012) STUDI EKOLOGI WERENG (HOMOPTERA) PADA TANAMAN PADI SAWAH DI TIGA KECAMATAN DI KABUPATEN SERDANG BEDAGAI. Undergraduate thesis, UNIMED.
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Abstract
Penelitian ini bertujuan untuk mengetahui keanekaragaman, kelimpahan, indeks keanekaragaman, indeks kelimpahan,indeks dominansi, dan waktu reproduksi wereng betina di tiga kecamatan di kabupaten Serdang Bedagai. Pengambilan sampel penelitian ini dilakukan di areal persawahan padi di kecamatan Sei Bamban (Desa Gempolan), kecamatan Sei Rampah (Desa Penggalangan), kecamatan Teluk Mengkudu (Desa Pekan Sialang Buah). Penelitian ini menggunakan metode survey, dengan menggunakan jala serangga (insecting net). Pada dua periode yaitu masa tanaman padi dan singgang-singgang padi (setelah panen). Pengambilan serangga wereng dilakukan dengan mengayunkan jala serangga sebanyak 50 kali menyentuh bagian atas tanaman padi dan singgang-singgang padi, yang dilakukan pada bagian Utara, Selatan, Tengah, Barat, dan Timur sehingga setiap sampling berjumlah 250 kali ayunan. Pengambilan sampel dilakukan sebanyak 4 kali baik pada masa tanaman padi dan singgang-singgang padi.Hasil penelitian menunjukkan bahwa di kabupaten Serdang Bedagai terdapat 14 jenis serangga wereng (Homoptera) pada tanaman padi sawah yakni terdiri atas wereng daun (Leaf hopper) : Recilia dorsalis, Nephottetix nigropictus, Nephottetic virescens, Cicadulina sp., Cofana spectra, Cofana sp.,Cicadella viridis, Empoascaanara sp., Thaia sp., dan wereng batang (Plant hopper) adalah Nilaparvata lugens, Sogatela furcifera, Oliarus sp, Nisia sp., dan Tagosedes sp. Dari hasil penelitian indeks keanekaragaman tertinggi pada masa tanaman padi dan singgang-singgang padi di kecamatan Sei Rampah yaitu 0,17 dan 0,10. Indeks kelimpahan wereng homoptera pada masa tanaman padi yang berada di kecamatan Sei Bamban 694 individu, Sei Rampah 357 individu, dan Teluk Mengkudu 601 individu. Sedangkan pada singgang-singgang padi di lokasi kecamatan Sei Bamban, Sei Rampah dan Teluk Mengkudu yaitu 691, 295, dan 695 individu. Berdasarkan indeks dominansi spesies Recilia dorsalis memiliki tingkat dominansi baik pada masa tanaman padi dan singgang-singgang padi yaitu 1,84 dan 1,47. Puncak waktu reproduksi spesies Recilia dorsalis berlangsung pada bulan Maret. Faktor fisika lingkungan pada masa tanaman padi dan singgang-singgang padi, suhu udara pada setiap kecamatan berkisar antara 27-280c, dengan kelembaban berkisar antara 81,75-83,00 %, dan kecepatan angin berkisar antara 1,16-1,39 m/detik.
Item Type: | Thesis (Undergraduate) | ||||||
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Call Number: | 574 Man s | ||||||
Keywords: | Ekologi Wereng; Padi Sawah | ||||||
Subjects: | Q Science > QR Microbiology | ||||||
Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Biologi | ||||||
Depositing User: | Mr Muhammad Iqbal | ||||||
Date Deposited: | 08 Apr 2016 08:34 | ||||||
URI: | http://digilib.unimed.ac.id/id/eprint/10252 |
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