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Santriyani, Ai Siti
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Agriculture, Biological Sciences & Forestry

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Pengaruh Beberapa Pelarut Ekstrak Daun Nerium oleander L. terhadap Mortalitas, Konsumsi Makan dan Kelulushidupan Spodoptera frugiperda J.E. Smith Subakti Putri, Syifa Nabilah; Susanto, Agus; Bari, Ichsan Nurul; Santriyani, Ai Siti
Agrikultura Vol 33, No 3 (2022): Desember, 2022
Publisher : Fakultas Pertanian Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/agrikultura.v33i3.41671

Abstract

Tanaman beracun oleander (Nerium oleander) memiliki potensi untuk mengendalikan hama utama tanaman jagung, salah satunya ulat grayak jagung (Spodopetera frugiperda). Namun demikian, studi ekstrak daun N. oleander yang disiapkan dengan menggunakan pelarut yang berbeda belum diketahui efektivitasnya dalam mengendalikan S. frugiperda. Penelitian ini bertujuan untuk mengetahui perbedaan berbagai pelarut ekstrak daun N. oleander terhadap terhadap mortalitas, konsumsi makan, dan kelulushidupan larva S. frugiperda. Penelitian melibatkan ekstraksi daun N. oleander berdasarkan perbedaan polaritas pelarut (n-hexane, etanol, metanol, air) untuk lima konsentrasi uji yang berbeda serta perlakuan kontrol yang diulang empat kali menggunakan Rancangan Acak Lengkap (RAL) pada larva S. frugiperda instar III. Hasil penelitian menunjukkan bahwa ekstrak kasar metanol daun N. oleander memberikan pengaruh penghambatan konsumsi pakan larva S. frugiperda sebesar 0,071 ± 0,028 g dibandingkan kontrol 0,642 ± 0,031 g. Selain itu, ekstrak kasar metanol daun N. oleander menunjukkan persentase mortalitas tertinggi sebesar 97,5 ± 0,50%, diikuti oleh ekstrak kasar air 70 ± 0,82%, ekstrak kasar etanol 57,50 ± 0,96%, dan ekstrak kasar n-hexane 50,00 ± 0,82%. Kelulushidupan larva, pupa, dan imago S. frugiperda menunjukkan nilai persentase terendah sebesar 2-3,4% ketika diaplikasikan ekstrak kasar metanol daun N. oleander. Secara keseluruhan, metanol adalah pelarut yang paling baik untuk mengekstrak daun N. oleander terhadap mortalitas, daya konsumsi, dan kelulushidupan larva S. frugiperda.
Metallic light-based bird-repellent prototype to reduce paddy yield loss in Jatinangor, Sumedang Regency Santriyani, Ai Siti; Bari, Ichsan Nurul; Natawigena, Wahyu Daradjat; Puspasari, Lindung Tri; Subakti-Putri, Syifa Nabilah
Kultivasi Vol 23, No 1 (2024): Jurnal Kultivasi
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kultivasi.v23i1.50827

Abstract

Munia birds (Lonchura spp.) are pests that attack paddy plants during the reproductive phase. The traditional methods of controlling birds are considered less effective because birds can adapt to the tools used. This study aimed to determine the effectiveness of a metallic light-based bird-repellent prototype to reduce paddy yield loss. The experiment was conducted in Cileles Village paddy fields, Jatinangor Subdistrict, Sumedang Regency, West Java Province, Indonesia. The effectivity of the prototype was tested by measuring the effective distance (m2), counting the frequency of bird visits (number of visits), bird populations, and the level of paddy damage (%), and paddy yield (kg/64 m2). The result of the experiment showed that 3 m was an effectual deterrent factor for the prototype, thus the tool can protect paddy plants with an area of 28.26 m2. The frequency of bird arrivals in the treatment was 22.25 times, compared to 61.25 times in the control; the bird population in the treatment was 48.25 birds, while the control was 108.75 birds; the level of damage to paddy panicles in the treatment was 10.11%, compared to 37.79% in the control; and the production of paddy yield with the repellent was higher (33.37 kg/64 m2) than the control (23.09 kg/64 m2). This innovative prototype was potentially able to deter bird pests in the paddy fields.
Co-Authors Bari, Ichsan Nurul Lindung Tri Puspasari Subakti Putri, Syifa Nabilah Subakti-Putri, Syifa Nabilah Wahyu Daradjat Natawigena, Wahyu Daradjat Wiwik Handayani