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POTENSI INSEKTISIDA MELUR (BRUCEA JAVANICA L. MERR) DALAM MENGENDALIKAN HAMA KUBIS CROCIDOLOMIA PAVONANA (F.) (LEPIDOPTERA: CRAMBIDAE) DAN PLUTELLA XYLOSTELLA (L.) (LEPIDOPTERA: YPONOMEUTIDAE) Lina, Eka Candra; Arneti, Arneti; Prijono, Djoko; Dadang, Dadang
Jurnal Natur Indonesia Vol 12, No 2 (2010)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (164.412 KB) | DOI: 10.31258/jnat.12.2.109-116

Abstract

This study was conducted to evaluate the potency of Brucea javanica (melur) for controlling two species ofcrucifer pests, i.e. Crocidolomia pavonana and Plutella xylostella. Melur fruits, twigs, and leaves were extracteddirectly with methanol or sequentially with hexane, ethyl acetate, and methanol. The most active extract was thenfractionated by preparative layer chromatography using hexane, mixtures of ethyl acetate and methanol, andmethanol as eluents. The most active fraction was formulated as EC (emulsifiable concentrate) and WP (wettablepowder) formulations, and tested for their toxicity and antifeedant effect against C. pavonana and P. xylostellalarvae. The results showed that methanol extract of melur fruits was more active than that of twigs and leaves.Fractionation of methanol extract of melur fruits yielded an active fraction which was eluted with ethyl acetate-methanol 9:1. EC and WP formulations of melur fruits were active against C. pavonana larvae with LC50 of 0.39%and 0.21%, respectively. The same formulations were also active against P. xylostella larvae with LC50 of 0.31% and0.54%, respectively. In no-choice tests, the antifeedant effect of the EC formulation on C. pavonana larvae (feedinginhibition [FI]: 70.9%-97.5%) was higher than on P. xylostella larvae (FI: 52.2%-83.9%), but the antifeedant effect ofthe WP formulation on the two species was relatively the same. In a choice test, the EC formulation at LC 85completely inhibited feeding by C. pavonana larvae (FI: 100%).
PEMANFAATAN TEKNOLOGI PENGELOLAAN OPT TANAMAN SAYURAN BERBAHAN BAKU RAMAH LINGKUNGAN DI KANAGARIAN LASI KECAMATAN CANDUANG KABUPATEN AGAM Khairul, Ujang; Arneti, Arneti; Reflin, Reflin
Jurnal Hilirisasi IPTEKS Vol 1 No 4a (2018): Desember 2018
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/hilirisasi.1.4.110-120.0

Abstract

Kegiatan tentang pemanfaatan teknologi pengelolaan organisme penganggu tanaman (OPT) pada tanaman sayuran berbahan baku ramah lingkungan telah dilakukan di Kelompok Tani Mitra di Nagari Lasi Kecamatan Canduang Kabupaten Agam pada bulan September hingga November 2016. Kegiatan ini bertujuan untuk meningkatkan pengetahuan petani tentang serangan OPT sayuran dan bagaimana mengelola OPT menggunakan biopestisida dan pestisida botani. Kegiatan ini meliputi: pemantauan tingkat serangan OPT di lahan mitra, penyuluhan, pelatihan, dan evaluasi hasil kegiatan. Hasil pemantauan tingkat serangan OPT pada tanaman sayuran mitra berkisar antara 18 - 27% untuk penyakit dan 15 - 20% untuk hama. Dari kegiatan dapat dikesimpulkaan yaitu: (1) tingkat OPT pada tanaman sayuran mitra cukup tinggi, (2) Petani belum memahami OPT yang menyerang tanaman sayuran mereka, (3) Petani tidak memahami metode pengelolaan OPT menggunakan biopestisida dan pestisida botani, dan (4) penyuluhan dan praktek lapangan, telah meningkatkan pengetahuan petani tentang pengelolaan OPT sayuran dengan menggunakan biopestisida dan pestisida botani.
Storage Temperature of Botanical Insecticide Mixture Formulations and Its Activity Againsts Crocidolomia pavonana (F.) (Lepidoptera: Crambidae) Lina, Eka Candra; Yulianti, Nia; Ernis, Gustria; Arneti, Arneti; Nelly, Novri
AGRIVITA, Journal of Agricultural Science Vol 40, No 3 (2018): OCTOBER
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v40i3.1296

Abstract

The purpose of this research was to evaluate the safety of mixture formulations of Tephrosia vogelii and Piper aduncum at various storage temperatures and their insecticidal activity against C. pavonana larvae. Formulations were made from T. vogelii and P. aduncum (1:5) in emulsifiable concentrate (EC) and wettable powder (WP) form. Both formulations have strong insecticidal activity against C. pavonana. This research used a randomized completed design in different temperature treatments. Insecticidal activity of formulations after storage was tested against C. pavonana. The treatments were done using deep leaf method in 5 concentrations and 5 replications. The results showed that LC95 value of EC formulation after storage at condition: below 4°C, room temperature, and 40°C were 0.19%, 0.34% and 0.21% respectively. Based on LC95 value of EC formulation from each treatment, indicated that EC formulation after storage could hold insecticidal activity as good as insecticidal activity before storage due to LC95 value after storage relatively lower than LC95 value before storage (0.35%). In the contrary, WP formulation activity was significantly decreased in all treatments compared to WP formulation activity before storage based on LC95 value.
PEMBELAJARAN NOTASI BALOK MELALUI METODE DRILL DI SMP NEGERI 1 SUNGAI SARIAK KABUPATEN PADANGPARIAMAN Arneti, Arneti; Toruan, Jagar Lumban; Syeilendra, Syeilendra
SENDRATASIK UNP Vol 1, No 3 (2013): Seri B
Publisher : FBS Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (210.056 KB)

Abstract

Abstract   This research aimed at describing the learning of musical notations through drilling, in the Art and Culture subject at SMP Negeri I Kabupaten Padang Pariaman. The learning of musical notations was not fully enjoyed by the students. They assumed that this learning material was difficult to understand and not really important for them. In fact, this learning material improved their ability when they later had musical, vocal. and instrumental practices. The teacher then found some solutions to solve this problem: I) explaining the form and the value of notes to the students such as about the symbol and the duration of full notes, half notes, quarter notes, and eighth notes: 2) explaining and providing examples or beats to the students such as quarter beats or eighth heats: 3) explaining the relationship of time signature (in meters) and heats such as second, third. and fourth meter: 4) explaining the differences of low and up beats and providing examples on how to read the first, second, third, and fourth notes: 5) explaining, and providing examples of units or groups of note: 6) providing examples of' rhythm patterns from the song that was taught to the students as welI as providing examples of rhythm patterns for each phrase of the song.   Keywords: Learning, Musical Notations, the Drilling Method
ASAL-USUL PENAMAAN NAMA-NAMA JORONG DI KANAGARIAN BATUKAMBIANG KECAMATAN AMPEK NAGARI KABUPATEN AGAM Arneti, Arneti; Hayati, Yenni; Nst., Muhammad Ismail
Bahasa dan Sastra Vol 5, No 1 (2017): SERI A
Publisher : Jurusan Bahasa dan Sastra Indonesia FBS Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/898590

Abstract

This study discusses the origins of naming names in Kanagarian Jorong Batukambiang Agam District of AmpekNagari. This study aimed to describe the origins, values, and the function of the origin of naming names in Kanagarian Jorong Batukambiang Agam District of Ampek Nagari. Theoretical framework used are: (1) the nature of folklore, (2) forms of Indonesian folklore, (3) a legend as one of the oral folklore, (4) the values of the legend, and (5) the function of oral literature. The research methodology used descriptive method. Data collection techniques used is a literature study, recording, and take note. Based on the research, it can be concluded that four origins of naming names in Kanagarian Jorong Batukambiang Agam District of Ampek Nagari, among other things, that: Jorong Parik, Jorong Balai Badak, Jorong Pasar Batukambiang, and Jorong Alahan Siriah. Based on the findings, naming the origin Jorong Parik fall into the category of natural phenomena. Naming Jorong Balai Badak fall into the category of animals fauna that a rhino. Naming Jorong Pasar Batukambiang fall into the category of topography namely an inanimate object such as a stone. Naming Jorong Alahan Siriah fall into the category flaura namely siriah plants. In naming the origin of the ellipse in Kanagarian Batukambiang, found the value of moral and social values, while the legend for the function is as educate the community, as a collective pride as well as a tool firm of belief.Keywords: origins, values, functions and categories
Pengujian Ekstrak Sederhana Bagian Tumbuhan Cassia alata Linnaeus terhadap Colletotrichum Gloeosporioides secara Invitro Arneti, Arneti; Sulyanti, Eri
JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION) Vol 1 No 2 (2017): Desember 2017
Publisher : Jurusan Hama dan Penyakit Tumbuhan Faperta Unand

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Abstract

Plant extracts have been known to cause inhibit the growth of Colletotrichum gloeosporioides.This study was aimed to determine the most potential part of Cassia alata crude extract to control antrachnose on chili. The study was conducted in Phytopathology Laboratory, Plant Pests and Diseases Department, Agriculture Faculty, Andalas University, from April to June 2015. The research used Completely Randomized Design (CRD) with seven treatments and five replications. The treatments were several extracts from different parts of C. Alata: 1) control 2) flower, 3) old leaf, 4) young leaf, 5) stem, 6) root, and 7) seed with concentration of 5% respectively. Variables observed were colony growth, colony width, conidia number, colony wet and dry weight, and conidia germination. The result showed that all of C. alata extracts could inhibit the growth of C. gloeosporioides in vitro. The best extract was from the old leaf with the percentage of colony width, conidia number, colony wet and dry weight, and conidia germination of 64,30%, 82,41%, 37,77, 29,8%, and 79,96% respectively.
PEMBUATAN FORMULASI SEDERHANA INSEKTISIDA BOTANI BERBAHAN KACANG BABI (TEPHROSIA VOGELII) DAN SIRIH HUTAN (PIPER ADUNCUM) UNTUK MENCEGAH HAMA PADA TANAMAN SAYURAN Lina, Eka Candra; Arneti, Arneti; Nelly, Novri; Ferdiyansyah, Angga
Jurnal Hilirisasi IPTEKS Vol 2 No 4.a (2019): Desember 2019
Publisher : LPPM (Lembaga Penelitian dan Pengabdian kepada Masyarakat) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v2i4.a.318

Abstract

Petani sangat mengandalkan insektisida sintetik dalam upaya pengendalian hama. Penggunaan insektisida sintetik yang tidak bijaksana dapat menyebabkan kerusakan lingkungan yang ditandai dengan musnahnya mikro organisme tanah, matinya musuh alami, dan matinya organisme bukan sasaran lainnya. Selain itu dampak negatif residu pestisida pada produk pertanian dapat menyebabkan gangguan kesehatan pada manusia yang mengkonsumsi produk yang terkontaminasi residu pestisida. Pengendalian hama alternatif yang ramah lingkungan sangat dibutuhkan dalam proses budidaya tanaman, diantaranya adalah insektisida botani. Upaya mengurangi ketergantungan petani terhadap insektisida sintetik dapat dilakukan dengan menjadikan petani sebagai produsen insektisida dan bukan hanya sebagai konsumen. Insektisida botani dari bahan tumbuhan yang ada di sekitar tempat bercocok tanam dapat digunakan sebagai tindakan pencegahan (preventif) dari serangan hama. Piper aduncum atau yang disebut sirih hutan dan Tephrosia vogelii atau disebut kacang babi banyak ditemukan di lahan pertanian produktif Alahan Panjang, Sumatera Barat. Campuran dua jenis bahan ini dengan perbandingan 2:1 diketahui dapat mengendalikan hama dari golongan Lepidoptera yang menyerang sayuran. Sosialisasi penggunaan di tingkat petani, latihan penyiapan bahan tanaman dan pembuatan larutan semprot dengan konsentrasi 5%, perlu dilakukan agar pengendalian hama efektif dan efisien. Manfaat kegiatan ini dapat membantu petani dalam mengendalikan serangan hama pada tanaman budidaya, mengurangi penggunaan insektisida sintetik, menghemat biaya produksi dan secara tidak langsung meningkatkan pendapatan petani. 
APLIKASI INSEKTISIDA BERBAHAN AKTIF BUPROFEZIN TERHADAP WERENG BATANG COKLAT (WBC) DI KELTAN RAMBUTAN DAN KELTAN SAKATO KOTA PADANG Sari, Nurfitri; Syahrawati, My; Arneti, Arneti; Resti, Zurai; Martinius, Martinius; Rahma, Haliatur; Sulyanti, Eri; Syahdia, Elfitri
Jurnal Hilirisasi IPTEKS Vol 2 No 3.b (2019): September 2019
Publisher : LPPM (Lembaga Penelitian dan Pengabdian kepada Masyarakat) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jhi.v2i3.b.326

Abstract

Wereng batang coklat atau WBC (Nilaparvata lugens Stal.) merupakan salah satu hama utama pada tanaman padi yang dapat menyebabkan kerusakan dalam waktu relatif singkat. Serangan hama ini mulai mengemuka di Sumatera Barat sejak tahun 2009-2017. Insektisida berbahan aktif buprofezin adalah salah satu insektisida yang banyak digunakan untuk mengendalikan populasi WBC. Pelatihan cara menakar dan aplikasi buprofezin ini telah dilaksanakan di Keltan Rambutan Kelurahan Bungus Barat dan Keltan Sakato Kelurahan Lambung Bukit, Kota Padang. Tujuannya adalah untuk memperlihatkan kepada petani kemampuan insektisida berbahan aktif buprofezin selama 1 jam terhadap 10 ekor WBC yang disediakan. Perlakuannya berupa aplikasi buprofezin pada dosis tertentu (½ dosis anjuran, dosis anjuran, 1½ dosis anjuran), masing-masing dalam 5 ulangan. WBC yang digunakan merupakan populasi lapangan dari lahan persawahan Kecamatan Pauh. Hasil pengujian di Keltan Rambutan menunjukkan bahwa insektisida sesuai dosis anjuran mematikan 20% WBC, dan di Keltan Sakato mematikan 24% WBC, dosis anjuran mematikan 26% WBC dalam satu jam. Dosis anjuran Buprofezin memang tidak ditujukan untuk mematikan 100 % wereng uji, namun lebih kepada dampaknya terhadap penghambatan ganti kulit 2-3 hari kemudian.