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All Journal Rekursif: Jurnal Informatika Jurnal Ilmu-Ilmu Pertanian Indonesia JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA AGRITROPICA : Journal of Agricultural Sciences Jurnal Entomologi Indonesia Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS
Agustin Zarkani
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Social Sciences Other

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NATURAL INCIDENCE OF ENTOMOPATHOGENIC FUNGUS Nomuraea rileyi ON Spodoptera frugiperda INFESTING CORN IN BENGKULU Ginting, Sempurna; Nadrawati, Nadrawati; Zarkani, Agustin; Sumarni, Teten
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol. 20 No. 2 (2020): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.22085-91

Abstract

Natural incidence of entomopathogenic fungus Nomuraea rileyi on Spodoptera frugiperda infesting corn in Bengkulu. Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) is a new invasive pest in corn. The intensive use of synthetic insecticides for pest control causing various problems such as resistance, pest resurgence, and environmental damage. To solve these problems, entomopathogenic fungi could be used as an alternative in pest management. Therefore, this study was aimed to determine the natural incidence of Nomuraea rileyi (Farlow) Samson (Hypocreales: Clavicipitaceae) entomopathogenic fungus on S. frugiperda in Bengkulu. The research was carried out by exploring the corn producing areas in Bengkulu for N. rileyi incidence. The results showed that the N. rileyi was occurred naturally infected S. frugiperda larvae reached 79.0%. Meanwhile, the percentage of crops damage due to S. frugiperda was ranged from 40.0 to 96.0%. The highest natural incidence of N. rileyi were found in the Village of Bukit Barisan and Tugu Rejo (79.0%), followed by Pulo Geto Baru (25.0%), and Taba Mulan (5.3%) while the lowest incidence was in Sidomulyo (1.0%). The infected larvae were not found in the Napal, Beringin Raya 1, and Beringin Raya 2, despite the percentage of S. frugiperda attacks was reached 50.0; 50.0 and 74.0%, respectively.
THE ATTACK of Rastrococcus sp. (Hemiptera: Pseudococcidae) ON Dysoxylum mollissimum Blume IN CAMPUS FOREST OF BENGKULU UNIVERSITY Ginting, Sempurna; ., Nadrawati; Zarkani, Agustin; Depari, Efratenta
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol. 20 No. 1 (2020): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.12054-60

Abstract

ysoxylum  mollissimum is a commodity that is widely used as carpentry wood and furniture in Bengkulu. Rastrococcus sp. is one of the pests of D. mollissimum. The purpose of this study was to evaluate the attack of Rastrococcus sp. on saplings, poles and trees D. mollissimum in the campus forest of Bengkulu University. The study was conducted with a purposive sampling survey method. The observational variables were symptoms and the rate of attack of Rastrococcus sp. at various stages of growth, the host range, and the identification of natural enemies of Rastrococcus sp. The results showed that Rastrococcus sp. was able to attack D. mollissimum at all growing stages, namely sapling, pole and tree. The highest number of Rastrococcus sp. population was observed in the pole phase (35.4 ± 6.46 individuals), then the tree phase (34.9 ± 20.38 individuals), and saplings (26.3 ± 5.12 individuals). The Rastrococcus sp. was commonly found in the lower leaves. Scymnus sp. (Coleoptera: Coccinellidae) and Acarina (mites) were found as predator of the mealybug. This information is expected to be a reference in developing control strategies of Rastrococcus sp. especially on D. mollissimum.
FIRST REPORT OF Begomovirus INFECTION ON PAPAYA IN BENGKULU, INDONESIA Sutrawati, Mimi; Parwito, Parwito; Priyatiningsih; Zarkani, Agustin; Sipriyadi; Sariasih, Yenny; Ganefianti, Dwi Wahyuni
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol. 21 No. 1 (2021): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.12149-55

Abstract

First report of Begomovirus infection on papaya in Bengkulu, Indonesia. A field survey was conducted during 2019, wefound a severe systemic yellow mosaic, striped green mosaic on leaves petiole, green spots on the fruit of papaya, leafmalformation, and stunting symptoms on three papaya cultivation area in Rejang Lebong, Kepahiang, Bengkulu Tengah, andSeluma, Bengkulu Province, Indonesia. A begomo-like virus was inferred to be the possible cause of the virus-disease-likesymptoms. The study aimed to identify the causal of those typical symptoms on papaya. PCR using universal primer fortranscriptional activator protein (TrAp) and replication-associated protein (Rep) gene of Begomovirus successfully amplifiedthe DNA fragments of 900 bp in all 10 detected samples, except for samples with leaf malformation and stunting symptoms. Itis indicating that those typical symptoms on papaya is associated with Begomovirus infection, while the causal of leafmalformation and stunting is unknown yet. This work is the first report of Begomovirus infected papaya in Indonesia. Severedisease incidence caused by this pathogen was observed on papaya plants in Bengkulu Province that was in the range of 42–100%. This finding is a precious information to be used for identification, and characterization the species of the virus,determining control strategies against the disease.
EFIKASI INSEKTISIDA NABATI EKSTRAK DAUN Tephrosia vogelii Hook. TERHADAP Crocidolomia pavonana (F.) dan Plutella xylostella (L.) SERTA PENGARUHNYA PADA Diadegma semiclausum (Hellen) Agustin Zarkani; Djoko Prijono
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 12, No 1 (2010)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.12.1.68-75

Abstract

[EFICATION OF BOTANICAL INSECTICIDE OF Tephrosia vogelii Hook. f. LEAF EXTRACT AGAINTS Crocidolomia pavonana (F.) AND Plutella xylostella (L.) AND ITS EFFECT TO Diadegma semiclausum (Hellen)]. The active fraction of hexane extract of Tephrosia vogelii (Tv) leaves was evaluated for this insecticidal activity on second-instar larvae of Crocidolomia pavonana and Plutella xylostella as well as for the safety to the adults of Diadegma semiclausum parasitoid. Fraction (fr) 2-4 of Tv from column chromatography (CC) had strong insecticidal activity on C. pavonana and P. xylostella.  In the test with C. pavonana, the fraction was more active by feeding than by contact. Based on LC50 at 72 hours since treatment (HST), fr 2-4 CC Tv was 1.8 times more toxic to P. xylostella than to C. pavonana.  The fr 2-4 CC Tv showed strong antifeedant effect against C. pavonana larvae.  At equal test concentrations, the treatment with fr 2-4 CC Tv caused much lower mortality in D. semiclausum parasitoid adults than in its host larvae, P. xylostella.   In contrast, an organophosphate profenofos, included in this study as a positive control, was much more detrimental to D. semiclausum than to P. xylostella.  In the semifield experiment, fr 2-4 CC Tv had comparable effect with profenofos and bioinsecticide Bacillus thuringiensis in reducing the population of C. pavonana larvae on broccoli plants.
Teknik budi daya larva Hermetia illucens (Linnaeus) (Diptera: Stratiomyidae) sebagai sumber protein pakan ternak melalui biokonversi limbah loading ramp dari pabrik CPO Agustin Zarkani; Miswarti Miswarti
Jurnal Entomologi Indonesia Vol 9 No 2 (2012): September
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (864.522 KB) | DOI: 10.5994/jei.9.2.49

Abstract

Larvae of Hermetia illucens fly (Linnaeus) is an important source of alternative protein and can be used as pellets for feeds. Currently the production of H. illucens larvae is still limited because its rearing depends on palm kernel meal. The objective of the research is to explore alternative media for rearing, i.e. using loading ramp waste from crude palm oil factory. The study was conducted using physical-chemical analysis of the media. Evaluation of potential rearing media of loading ramp was done by studying the suitability of loading ramp fermented by EM4®, rumen microbes, and organic liquid fertilizer and without fermentation. Treatment media was develop with an enrichment ratio of 1 : 0.25, 1 : 05, and 1 : 1 (v/v) for bran and husk, and 1.25, 2.5, and 5% (w/w) for coconut sugar. Each experiment was arranged in complete randomized design using 20 larva of the 2nd instar. Larvas were incubated in plastic with tube with diameter of 10 cm and 20 cm in height containing of media 300 g. Response differences in growth and mortality were analyzed by ANOVA and least significant differences test at 0.05 levels. Preference and analysis suitability of the media were conducted using material enrichment. Results show that the loading ramp waste contain 9.80% protein and 10.32% fat. Although the media are could support growth and development of the larvae at different degree, media from waste fermentation POC loading ramp with bran enrichment 1 : 0.5 (v/v) is the best media for rearing larva.
Pemanfaatan Maggot Hermetia illucens L. sebagai Sumber Protein Pelet Ikan di Desa Wisata Rindu Hati Bengkulu Tengah Zarkani, Agustin; Yar Johan; Yenni Putri Sari; Habib Al Ayubi Reonaldi; Friska Zelina
DHARMA RAFLESIA Vol 21 No 2 (2023): DESEMBER (ACCREDITED SINTA 5)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dr.v21i2.29743

Abstract

Rindu Hati merupakan desa binaan Universitas Bengkulu yang memiliki potensi sumber daya alam berlimpah. Selain sebagai objek wisata alam, desa ini juga berpotensi sebagai objek wisata perikanan, namun belum dioptimalkan. Permasalahan sampah organik dampak kunjungan wisatawan menjadi peluang biokonversi maggot Black Soldier Fly (BSF), Hermetia illucens L. Pengabdian riset ini bertujuan untuk melakukan pendampingan pemanfaatan maggot BSF sebagai sumber protein utama pembuatan pelet ikan serta membantu pemasaran produk berbasis maggot tersebut. Kegiatan PPM ini dilakukan dengan teknik demonstrasi produksi di laboratorium dan desa mitra serta pendampingan langsung secara bertahap terhadap 20 masyarakat desa yang terpilih. Hasil kegiatan mendapatkan 100% peserta telah menguasai teknik budidaya BSF, teknik produksi pelet ikan dan teknik pemasaran. Peserta juga telah menentukan jenis formulasi pelet ikan berbahan baku sederhana. Semua peserta bersepakat menjadikan produksi pelet pakan ikan tersebut menjadi sebuah kegiatan ekonomi baru yang dapat menjadi sumber penghasilan tambahan masyarakat Desa Rindu Hati serta juga terciptanya objek wisata baru bidang perikanan yang bersih dan sehat sehingga mendukung desa wisata ramah lingkungan.
Tingkat Pengetahuan Dan Keterampilan Petani Tentang Tanaman Refugia Dan Musuh Alami Hama Padi di Desa Sumber Agung, Bengkulu Utara Hamidi, Ilmi; Djamilah; Sutrawati, Mimi; Zarkani, Agustin; Sitohang, Enjelina Br
DHARMA RAFLESIA Vol 22 No 2 (2024): DESEMBER (ACCREDITED SINTA 5)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dr.v22i2.38363

Abstract

Penggunaan pestisida kimia yang berlebihan dalam pengendalian hama padi di Desa Sumber Agung, Bengkulu Utara, telah menimbulkan dampak negatif terhadap lingkungan dan kesehatan. Oleh karena itu, diperlukan pendekatan ramah lingkungan, seperti pemanfaatan tanaman refugia dan musuh alami, untuk mendukung keberlanjutan pertanian padi. Program pengabdian masyarakat ini bertujuan meningkatkan pengetahuan dan keterampilan petani tentang manfaat tanaman refugia dan peran musuh alami dalam pengendalian hama. Metode kegiatan meliputi observasi, pelaksanaan pelatihan interaktif, dan evaluasi menggunakan pre-test dan post-test. Hasil menunjukkan peningkatan skor rata-rata pengetahuan petani tentang tanaman refugia dari 1,50 menjadi 3,00, peran musuh alami dari 1,70 menjadi 3,60, dan keterampilan diagnostik hama padi dari 1,70 menjadi 3,20. Pelatihan ini berhasil meningkatkan pemahaman petani terkait teknik pengelolaan hama berbasis ekologi yang mengurangi ketergantungan pada pestisida kimia. Edukasi lebih lanjut diharapkan dapat memperluas adopsi strategi pengendalian hayati untuk mendukung produktivitas dan kelestarian ekosistem pertanian di wilayah ini.
Soil Arthropods Diversity in Sungai Suci Bengkulu Ecosystem Fauzi, Ariffatchur; Zarkani, Agustin; Putra, Apriza Hongko; Ifebri, Rihan; Wibowo, Hariz Eko; Putri, Elsa Lolita; Nadrawati, Nadrawati
AGRITROPICA : Journal of Agricultural Sciences Vol. 7 No. 1 (2024)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agritropica.7.1.23-27

Abstract

Sungai Suci is a part of Bengkulu that is 400 meters above sea level. Sungai Suci is located in a coral coastal area with three ecosystems: the bamboo ecosystem and the sea pine ecosystem; soil arthropods are among the animals that inhabit those two environments. This study aims to look into the variety of soil arthropods in the ecosystem of Sungai Suci. Sampling bamboo and sea pine ecosystems was done by taking soil from the root areas of bamboo and sea pine. For each ecosystem, five soil samples are taken randomly as replication. The soil was placed in a smaller funnel and left for two weeks at room temperature 24ºC, and 12 hours of irradiation. Soil arthropods obtained from the three ecosystems were identified, and their numbers were recorded. The most common type of arthropod found in the three ecosystems was acarina. The study results showed that the diversity values of the bamboo and sea pine ecosystems, respectively, were 1.44 and 0.49; and. Dominance values for the bamboo and sea pine ecosystems, respectively, are 0.38 and 0.82. The evenness values of the bamboo and sea pine, respectively, are 0.56 and 0.18.
Identifikasi Pola Polimorfisme Pada Punggung Kumbang Coccinellidae Menggunakan Metode Yolo Untuk Membedakan Jenis Kumbang Predator dan Hama Nurmalasari, Eva; Susanto, Agus; Zarkani, Agustin
Rekursif: Jurnal Informatika Vol 13 No 1 (2025): Volume 12 Nomor 1 Maret 2025
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekursif.v13i1.40182

Abstract

Identifikasi pola polimorfisme pada punggung kumbang Coccinellidae penting untuk membedakan predator dan hama dalam pertanian. Namun, perbedaan visual sering kali sulit dikenali. Penelitian ini mengusulkan metode deep learning menggunakan YOLOv5 untuk identifikasi otomatis. Data kumbang Coccinellidae dikumpulkan, melalui preprocessing dan augmentasi, menghasilkan 1.821 gambar. Model YOLO dilatih dengan parameter optimal hingga epoch 729 dan patience 300. Evaluasi menggunakan metrik Mean Average Precision (mAP) menunjukkan kinerja tinggi, dengan mAP@0,5 sebesar 0,966 dan mAP@0,75 sebesar 0,962. Selain itu, aplikasi berbasis Android dikembangkan untuk implementasi model ini dan diuji dengan hasil kepuasan pengguna sebesar 80. Hasil penelitian menunjukkan bahwa pendekatan ini efektif dalam membedakan kumbang predator dan hama secara akurat serta berpotensi membantu pengendalian hama di bidang pertanian. Kata Kunci: Identifikasi, Coccinellidae, Polimorfisme, YOLOv5.
Diversity of Land Arthropods in Community Oil Palm Plantations in the Coastal Area of Bengkulu Fauzi, Ariffatchur; Zarkani, Agustin; Djamilah, Djamilah; Gustian, Deri; Hamidi, Ilmi; Ifebri, Rihan; Prastio, Turko
AGRITROPICA : Journal of Agricultural Sciences Vol. 8 No. 1 (2025)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/j.agritropica.8.1.33-42

Abstract

Bengkulu is one of the provinces located on the island of Sumatra, boasting a significant agricultural sector. One of the leading agrarian commodities in Bengkulu Province is oil palm. Oil palm in Bengkulu is planted in coastal areas. One of the key factors supporting oil palm fruit production is a healthy soil arthropod ecosystem. Soil arthropods play an essential role in the oil palm plantation ecosystem. As organisms that live in the soil, these animals help maintain soil and plant health, improving soil structure and nutrient availability for oil palm plants. This study aims to obtain initial data on the diversity of soil arthropods and their roles in smallholder oil palm plantations on the coast of Bengkulu. This study began with sampling oil palm plantations around the coast of Bengkulu. The areas that will be used as study locations include Sungai Suci, Danau Gedang, and Pekik Nyaring. Arthropod sampling was carried out by installing pitfall traps in both areas, which were determined diagonally in a ​​200 m² area, with 20 pitfall trap units per location. Arthropod species were identified based on morphology, and the type and number of populations were recorded. The Shannon-Wiener diversity index, dominance index, and evenness index measure analysis of biodiversity data. The results of the study showed that in the majority, the diversity of soil arthropods in the three sampling areas was moderate, the dominance of arthropod types was low to moderate, and evenness was moderate to high.
Co-Authors ., Nadrawati Depari, Efratenta Djamilah Djamilah Djamilah, Djamilah DJOKO PRIJONO Dwi Wahyuni Ganefianti, Dwi Wahyuni Fauzi, Ariffatchur Friska Zelina Gustian, Deri Habib Al Ayubi Reonaldi Hamidi, Ilmi Ida Ayu Putu Sri Widnyani Ifebri, Rihan Mimi Sutrawati Miswarti Miswarti Nadrawati, Nadrawati Nadrawati, Nadrawati Nurmalasari, Eva Parwito Parwito, Parwito Prastio, Turko Priyatiningsih Putra, Apriza Hongko Putri, Elsa Lolita SEMPURNA GINTING Sipriyadi Sitohang, Enjelina Br Sumarni, Teten Wibowo, Hariz Eko Yar Johan Yenni Putri Sari Yenny Sariasih