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Struktur Komunitas Hymenoptera Parasitoid Pada Ekosistem Sayuran dan Vegetasi Non-Crop di Sumatera Barat Yaherwandi, Yaherwandi
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 2, No 2 (2010): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

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Abstract

Hymenoptera parasitoids have an important role in agroecosystem because of their ability in suppressing pest population. Their presences in the field are seen as the key to agricultural ecosystem. Their presence can be influenced by the availability of non-crop vegetation. Some adult Hymenoptera parasitoids require food in the form of pollen and nectar of wild flowers to ensure effective reproduction and longevity. The objective of this research is to study Hymenoptera parasitoid communities in vegetable field and non-crop vegetation at Alahan Panjang and Kayu tanduak agricultural landscapes. Insects were sampled by two trapping techniques (farmcop and sweep net) in one lines of transect for each landscape. Total of 62species from 19 families of Hymenoptera parasitoid were collected invegetable field and  non-crop vegetation at Alahan Panjang and Kayu Tanduak landscape. Landscape structure affected the species richness, diversity and evenness of Hymenoptera parasitoid invegetable field and  non-crop vegetation.
Kajian Parasitoid: Eriborus Argenteopilosus Cameron (Hymenoptera : Ichneumonidae) pada Spodoptera. Litura fabricius (lepidoptera : Noctuidae) Nelly, Novri; Yaherwandi, Yaherwandi; Gani, S.; Apriati, Apriati
Sainstek Vol 11, No 1 (2008): Vol. XI No. 1, September 2008
Publisher : Lembaga Penelitian Universitas Negeri Padang

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Abstract

Study of parasitoid Eriborus argenteopilosus Cameron (Hymenoptera : Ichneumonidae) on S. litura Fabricius (Lepidoptera: Noctuidae) was conducted in laboratorium Entomology Departement Plant pest and desease Faculty of agriculture, Andalas University in January to March 2006. The study was used biological assay methode to known parasititation and potential fecundity of  parental parasitoid. The result showed that fluctuation parasititation (63 - 17,99 %) and superparasitisme (36,67 - 3,33%) E. argenteopilosus on S. litura Potential fecundity of E. argenteopilosus 182,3±72 and potential release  73,7±49 eggs. The survival of parental adult  E. argenteopilosus only 6 days in laboratorium. Key words : E. argenteopilosus, Parasititation,  S. litura
Pemberdayaan Kelompok Tani Sawah Payo Kabupaten Tanah Datar Dalam Pelatihan Pembuatan Rhizokompos Yulmira Yanti; Hasmiandy Hamid; Yaherwandi Yaherwandi; Noveriza Hermeria
Prosiding Konferensi Nasional Pengabdian Kepada Masyarakat dan Corporate Social Responsibility (PKM-CSR) Vol 3 (2020): Peran Perguruan Tinggi dan Dunia Usaha Dalam Pemberdayaan Masyarakat Untuk Menyongsong
Publisher : Asosiasi Sinergi Pengabdi dan Pemberdaya Indonesia (ASPPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (372.997 KB) | DOI: 10.37695/pkmcsr.v3i0.989

Abstract

Kelompok tani Sawah Payo Nagari Gunung Rajo Kecamatan Batipuh, Kabupaten Tanah Datar mempunyai potensi dalam produksi pupuk organik, hal ini didukung oleh sisa hasil pertanianseperti jerami dan gulma tanaman pahitan Tithonia diversifolia, serta limbah peternakan (kotoran hewan) yang melimpah. Pemanfaatan limbah pertanian, tanaman gulma, maupun peternakan masih belum maksimal. Pengolahan limbah pertanian dan peternakan menjadi kompos yang dilakukan oleh sebagian besar petani di Nagari Gunung Rajo belum menggunakan proses fermentasi, sehingga hasil dan kualitasnya kurang maksimal. Tujuan kegiatan pemberdayaan kelompok tani ini adalah memberikan pengetahuan tentang proses pembuatan pupuk organik dari penyedian bahan baku, pembuatan bio-aktivator, dan pengemasan hasil produksi. Metode yang digunakan dengan pelatihan terstruktur dan praktik langsung pembuatan pupuk organik atau yang lebih dikenal dengan kompos. Hasil yang diperoleh dari kegiatan pemberdayaan ini adalah kelompok tani mampu membuat pupuk organik rizokompos berbahan limbah pertanian, gulma, limbah peternakan dan rizobakteri secara mandiri dengan kualitas hasil produksi yang baik yang mampu meningkatkan hasil pendapatan masyarakat setempat
Biologi Nilaparvata lugens Stall (Homoptera: Delphacidae) pada Empat Varietas Tanaman Padi (Oryza sativa L.) Yaherwandi Yaherwandi; Reflinaldon Reflinaldon; Ayu Rahmadani
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 1, No 2 (2009): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

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Abstract

Biological parameters of insect pests is very important in testing the resistance of rice plants against brown plant hopper. This research aims to study the amount and duration of stage egg, nymph, imago, and the life cycle of brown plant hopper on four varieties of rice. The methods used in research was Complete Random Design  with four treatments (variety of IR 64, Batang Piaman, Cisokan, and IR 42) and eight replications. Research data were analyzed using variance analysis and continued with List Significant Different (LSD) at 5% level. The results of research showed that the number and duration of stage egg, nymph, imago, and cycle time of brown plant hopper in four rice varieties were different. Number of egg, nymph, and imago were lowest in 64 IR varieties, while the highest was IR 42 variety. Stage of eggs and nymphs were the shortest in IR 42 varieties, while the longest were IR variety 64. Imago stage was the shortest in IR 64 variety, while longest was the variety IR 42. The life cycle of brown plant hopper were shortest in IR 42 varieties, while longest was the variety IR 64. The results of this study can be concluded that the IR 64 varieties more resistant than the varieties IR 42, Cisokan, and Batang Piaman based on stage of egg, nymph, and imago.
Kelimpahan Kepik Predator (Hemiptera: Reduviidae) di Daerah Endemik Serangan Ulat Api Pada Perkebunan Kelapa Sawit Rakyat Siska chiko efendi; Yaherwandi Yaherwandi; Maiwil Diratika
Jurnal Penelitian Pertanian Terapan Vol 20 No 1 (2020)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v20i1.1471

Abstract

Caterpillar fire is classified as the main pests in oil palm plants and are found in almost all oil palm plantations in Indonesia. The caterpillar fire control is currently being directed to biological control by predatory insects. Insects from the Reduviidae family are one of the insects whose members are predators of caterpillar fire. This study aims to (1) identify predatory ladybug species (Hemiptera: Reduviidae) found in endemic areas of caterpillar fire attacks. (2) studying the abundance of predatory ladybugs (Hemiptera: Reduviidae) in areas endemic to fire caterpillar attacks. The research locations were Nagari Panyubarangan, Timpeh district, and Nagari Gunung Selasih, Pulau Punjung district. Identification of sample insects was carried out at the insect Bioecology Laboratory, plant protection department, faculty of Agriculture, Andalas University and campus III land and plant laboratory Dharmasraya from April-July 2018. The sampling of insects uses two methods, namely direct collection, and swing net. In this research, 8 species of predatory ladybugs were found. Of these 8 species, only 3 species preyed on caterpillar fire. Species that prey on fire caterpillars have the highest abundance of Cosmolestes practices as many as 116 individuals and followed by 64 individual Zelus regarding species.  
Aktivitas Air Rebusan Beberapa Kulit Jeruk (Citrus spp) untuk Menekan Pertumbuhan Colletotrichum gloeosporioides pada Tanaman Buah Naga secara In Vitro Eri Sulyanti; Yaherwandi Yaherwandi; Restu Monika Ulindari
JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION) Vol 3 No 2 (2019): Desember 2019
Publisher : Jurusan Hama dan Penyakit Tumbuhan Faperta Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (320.973 KB) | DOI: 10.25077/jpt.3.2.56-64.2019

Abstract

Penelitian bertujuan untuk mendapatkan air rebusan kulit jeruk yang efektif dalam menekan pertumbuhan patogen Colletotrichum gloeosporioides penz. & Sacc. penyebab penyakit antraknosa pada tanaman buah naga (Hycoleceurus polyrhizus, L.) secara in vitro. Hasil penelitian diharapkan dapat membantu petani dalam mengendalikan penyakit antraknosa pada tanaman buah naga, serta mampu mempertahankan kualitas dan kuantitas dalam memproduksi buah naga. Penelitian ini dilaksanakan di laboratorium Fitopatologi Fakultas Pertanian Universitas Andalas dengan Rancangan Acak Lengkap, 6 perlakuan dan 5 ulangan. Perlakuannya adalah air rebusan dari beberapa kulit jenis jeruk dengan konsentrasi 5 g/100 ml, diantaranya: A = Tanpa perlakuan (kontrol); B = Kulit jeruk purut (Citrus histrix DC); C = Kulit jeruk manis (Citrus sinensis L.); D = Kulit jeruk nipis (Citrus aurantifolia); E = Kulit jeruk kasturi(Citrus madurensis Lour.) ; F = Pestisida berbahan aktif (tebukonazol, dengan dosis anjuran 2 g/100 ml, sebagai pembanding). Data yang diperoleh dianalisis secara sidik ragam (uji F) dan jika berbeda nyata dilanjutkan dengan (Least Significance Different) LSD pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa dari perlakuan beberapa kulit jeruk dapat menekan pertumbuhan jamur C. gloeosporioides in vitro. Perlakuan air rebusan kulit jeruk manis adalah yang paling baik dengan efektivitas penekanan: luas koloni 76,86%, jumlah konidia 94,58%, dan daya perkecambahan konidia 38,18%. Namun efektivitasnya masih rendah jika dibandingkan dengan penggunaan pestisida berbahan aktif tebukonazol lebih efektif 100%.
Keanekaragaman laba-laba pada perkebunan kelapa sawit yang berbatasan dengan hutan Ulka Sri Asih; Yaherwandi Yaherwandi; Siska Efendi
Jurnal Entomologi Indonesia Vol 18 No 2 (2021): Juli
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.18.2.115

Abstract

Oil palm plantations bordering forests were thought to affect the biotic components that make up the diversity of ecosystems, especially species with high mobilization and adaptability, such as spiders. This study aims to identify spiders found in oil palm plantations and analyzing diversity and evenness at various distances of oil palm plantations from the forest. Observations of spiders were carried out on oil palm plantations bordered by forests in Nagari Gunung Selasih and Sungai Kambut, Pulau Punjung District, Dharmasraya Regency, West Sumatra Province. In oil palm plantations, a one km long transect line was made from the forest edge. In the sample plots, spiders were observed using a pitfall trap, knockdown, and hand collecting. Data were analyzed using the Shannon-Wiener diversity and evenness index. The highest spider species diversity index was found at a distance of 100–300 m from the forest, respectively 3.06, 3.05, and 3.11. The same is true for the highest evenness index at a distance of 100–300 m from the forest, respectively, namely 0.94, 0.94, and 0.95. In general, the results of this study indicate that the presence of forest bordering the forest is thought to affect spiders in oil palm plantations.
Struktur Komunitas Hymenoptera Parasitoid Pada Berbagai Lanskap Pertanian Di Sumatra Barat Yaherwandi Yaherwandi
Jurnal Entomologi Indonesia Vol 6 No 1 (2009): April
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (230.822 KB) | DOI: 10.5994/jei.6.1.1

Abstract

Understanding how the landscape structure affect the interaction between crops, pests and their natural enemies is a complex problem that can significantly impact on the success or failure of insect biological control. Hymenoptera parasitoids are particularly important natural enemies because of their great diversity and effectiveness as agents of biological control. The objective of this research is to study the diversity of Hymenoptera parasitoid on some vegetables and rice ecosystem in West Sumatera. Hymenoptera parasitoids were sampled using three trapping techniques (farmcop, insect net and yellow pan trap). Species accumulative curves, Jackknife-1 estimator, and indices of diversity were applied to analyze the data. Results indicated that there were 1522 specimen consist of 22 families and 148 species of Hymenoptera parasitoid on agricultural ecosystem in west Sumatera. Braconidae and Ichneumonidae were dominant Hymenoptera parasitoid family in vegetables ecosystem. Contrast, Mymaridae, Diapriidae, and Eulophidae were dominance of Hymenoptera parasitoid famili in rice ecosystem. Diversity of Hymenoptera parasitoid was influenced by the landscape structure. Species richness and diversity were higher in polyculture ecosystem than monoculture.
Akurasi dan Prediksi Kejadian Hopperburn Wereng Batang Coklat (Nilaparvata Lugens Stal) menggunakan Citra Sentinel-2 Rahmad Gunawan; Reflinaldon Reflinaldon; Yaherwandi Yaherwandi
JPT : JURNAL PROTEKSI TANAMAN (JOURNAL OF PLANT PROTECTION) Vol 5 No 2 (2021): Desember 2021
Publisher : Jurusan Hama dan Penyakit Tumbuhan Faperta Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jpt.5.2.107-117.2021

Abstract

Forecasting of brown planthopper attack or BPH (Nilaparvata lugens Stal) using artificial intelligence and vegetation index of Sentinel-2 Satellite Imagery improves forecasting the incidence of hopperburn. This study aimed to determine the accuracy and correlation of the random forest classification of Sentinel-2 imagery to the incidence of hopperburn reported by Plant Pest Organisms Observer (PPOO) and determine the best method for predicting it. The study was done through observation and secondary data processing about the age of the plant, the incidence of hopperburn by BPH, interviews with farmers, and PPOO. The results showed that the hopperburn NDVI index ranged from 0.23 - 3.8. The random forest classification accuracy was high (Kappa Index = 0.82). The relationship between the hopperburn area from the PPOO report and the predicted area from Sentinel-2 images classified as (R2 = 0.53, R = 0.728) with the equation Y = -1.5 + 0.82 X. The correlation can be improved using spatial regression Geographically Weighted Regression (GWR4) with the best gaussian distance of 1.76 km (R2 = 0.6, R = 0.77). The best prediction for the NDVI stage of hopperburn attack time series with random forest (RMSE = 0.12819) was better than the prediction of the hopperburn attack time series with the exponential smoothing method from the PPOO report (RMSE 3.302184).
Keanekaragaman Serangga Pengunjung Bunga Tanaman Kelapa Sawit Di Kecamatan Pulau Punjung Kabupaten Dharmasraya efendi, siska chiko; Prabowo, Stevanie; Yaherwandi, Yaherwandi
Jurnal Bioconcetta Vol 6, No 1 (2020)
Publisher : STKIP PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/bc.2020.v6i2.3931

Abstract

Serangga pengunjung bunga memiliki peran yang sangat penting, karena beberapa spesies serangga pengunjung bunga berperan sebagai agen penyerbuk pada tanaman kelapa sawit. Penelitian ini bertujuan untuk mempelajari keanekaragaman serangga pengunjung bunga pada tanaman kelapa sawit. Penelitian ini dilaksanakan di Nagari Sungai Dareh, Gunung Selasih, IV Koto, Kec. Pulau Punjung, Kab. Dharmasraya dari bulan Oktober sampai Desember 2017. Pengambilan sampel menggunakan hand collecting, insect net, dan yellow pan trap. Data keanekaragaman spesies dianalisis menggunakan indeks Shannon Wiener, kemerataan spesies menggunakan indeks Simpson serta dominasi spesies menggunakan indeks nilai penting. Hasil penelitian ditemukan sebanyak 25.900 individu, 10 ordo dan 30 famili. Indeks keanekaragaman pada bunga jantan adalah 0,52 dan indeks keanekaragaman pada bunga betina adalah 0,96. Indeks kemerataan pada bunga jantan yakni 0,27 dan kemerataan bunga betina yakni 0,32. Indeks keanekaragaman dan kemerataan Nagari Gunung Selasih yaitu 1,35 dan kemerataan 0,59. Dinagari IV Koto indeks keanekaragaman yakni 1,50 dan indeks kemerataan yakni 0,67 sedangkan Nagari Sungai Dareh indeks keanekaragaman yakni 1,37 dan kemarataan 0,42. Ordo Coleoptera family Curculionidae memiliki indeks nilai penting tertinggi yaitu 1,00.