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All Journal HAYATI Journal of Biosciences Jurnal Ilmu Pertanian Indonesia Jurnal Fitopatologi Indonesia Forum Pasca Sarjana Agrikultura Jurnal Penelitian Hutan Tanaman Agrovigor: Jurnal Agroekoteknologi AGRIVITA, Journal of Agricultural Science Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Perlindungan Tanaman Indonesia JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Agrotek Tropika Jurnal Entomologi Indonesia Buletin Palma Jurnal Risalah Kebijakan Pertanian dan Lingkungan SEAS (Sustainable Environment Agricultural Science) PERTANIAN TROPIK
Hermanu Triwidodo
Department Of Plant Protection, Faculty Of Agriculture, IPB University Jln. Kamper, Kampus IPB Dramaga, Bogor, West Java 16680 Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Medicine & Pharmacology Social Sciences

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Pengaruh komposisi lanskap pertanian terhadap kelimpahan, tingkat serangan, dan parasitisme Spodoptera frugiperda (Smith): Effect of agricultural landscape composition on abundance, attack rate, and parasitism of Spodoptera frugiperda (Smith Sataral, Mihwan; Tawakkal, Muhammad Iqbal; Winasa, I Wayan; Triwidodo, Hermanu; Rizali, Akhmad; Buchori, Damayanti
Jurnal Entomologi Indonesia Vol 21 No 3 (2024): November
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.21.3.247

Abstract

Landscape management in an agroecosystem is part of an ecological approach aimed at conserving biological control to suppress the abundance of pests and crop damage. This study investigates how agricultural landscape composition influences the abundance and attack rates of Spodoptera frugiperda and its parasitoids’ abundance and parasitism rates. The research assessed landscape characteristics in maize fields around Bogor, including class area (CA) and the number of patches (NP) of agricultural and semi-natural habitats. A 300-meter radius buffer was used to evaluate these features. Eggs and larvae of S. frugiperda were collected and reared in the laboratory to observe their parasitized and non-parasitized development. The influence of landscape composition on the abundance, attack rate, and parasitism of S. frugiperda was analyzed using generalized linear models. The results indicate that landscape composition affects the abundance and attack rate of S. frugiperda and influences the abundance and parasitism rate of parasitoids. Increasing the agricultural class area can increase the abundance of S. frugiperda larvae. In addition, increasing the NP and CA of semi-natural habitats can reduce the infestation rate of S. frugiperda. The elevation of maize areas also shows an influence on the abundance of parasitoids and the parasitism of larvae. In contrast, the age of the maize affects the abundance and attack of S. frugiperda. These findings highlight the importance of landscape composition, particularly the presence of semi-natural habitats, in managing pest populations effectively. This ecological approach offers valuable insights for sustainable pest control strategies in agricultural practices.
HAMA DAN PENYAKIT PENTING TANAMAN KAKAO DI KABUPATEN NAGEKEO, PROVINSI NTT Victoria Coo Lea; Hermanu Triwidodo; Supramana Supramana
Jurnal Agrotek Tropika Vol 10, No 4 (2022): JURNAL AGROTEK TROPIKA VOL 10, NOVEMBER 2022
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v10i4.5860

Abstract

Kakao (Theobroma cacao L.) merupakan satu komoditas strategis pendukung perekonomian di Nagekeo. Tanaman kakao yang tua dan kurang produktif, pemeliharaan yang kurang intensif serta hama dan penyakit adalah penyebab rendahnya produktivitas kakao dibandingkan daerah penghasil kakao lain di Indonesia.  Penelitian untuk mengetahui hama dan penyakit penting pada buah kakao di Kabupaten Nagekeo dilakukan di perkebunan rakyat di 3 kecamatan, yaitu Kecamatan Boawae, Mauponggo dan Keo Tengah. Pada setiap lokasi diambil 20 lahan contoh seluas 0,5 ha. Penarikan tanaman contoh dilakukan dengan pola diagonal. Parameter yang diamati adalah gejala kerusakan dan  intensitas serangan oleh hama dan penyakit penting. Dua jenis hama penting, yaitu  hama kepik pengisap buah kakao (Helopeltis sp) dan penggerek buah kakao (Conopomorpha cramerella) dengan tingkat kerusakan Helopeltis sp paling tinggi terjadi di Kecamatan Boawae yaitu 23,95%, Kecamatan Keo Tengah yaitu 20,95%, Kecamatan Mauponggo intensitas serangan sebesar 20,10% intensitas serangan PBK tertinggi di Kecamatan Boawae yaitu 6,11%, Kecamatan Keo Tengah sebesar 4,76% sedangkan Kecamatan Mauponggo intensitasnya hanya mencapai 2,35%. Penyakit penting kakao yang ditemukan adalah  busuk buah (Phytophthora palmivora) dengan keparahan penyakit Phytophthora palmivora paling tinggi terjadi di Kecamatan Keo Tengah yaitu 5,11% jika dibandingkan dengan Kecamatan Boawae dan Mauponggo yaitu sebesar 3,25% dan 1,28%.
The Effectiveness of Hot Water and Guano Tea Treatments on Aphelenchoides besseyi Nematode on Rice Seeds and Their Effects on the Growth of Rice Seedling Syarifah, Syarifah; Supramana, Supramana; Triwidodo, Hermanu
Jurnal Fitopatologi Indonesia Vol. 16 No. 5 (2020)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.16.5.216-226

Abstract

Aphelenchoides besseyi merupakan salah satu nematoda penting terbawa benih yang menginfeksi padi dan dapat menyebabkan kehilangan hasil serta mengurangi kualitas gabah. Penelitian ini bertujuan mendapatkan metode yang efektif untuk mengendalikan nematoda A. besseyi pada benih padi melalui perlakuan air panas dan teh guano. Penelitian dilakukan terhadap tiga varietas padi, yaitu Pak Tiwi 1, Ciherang, dan IPB 3S, dua perlakuan perendaman, yaitu perendaman air panas suhu 55 °C dan perendaman dalam teh guano, serta tujuh waktu perendaman, yaitu 0, 5, 10, 15, 20, 25, dan 30 menit. Perlakuan air panas suhu 55 °C dan teh guano efektif menurunkan populasi nematoda, namun pengaruhnya berbeda pada setiap varietas. Pada varietas Pak Tiwi 1 perendaman air panas efektif menurunkan populasi nematoda pada waktu perendaman 5-30 menit, dan daya tumbuh paling baik pada perendaman air panas dengan waktu 10 menit dan kontrol dengan waktu 20 menit. Pada varietas Ciherang, metode perendaman air panas efektif dengan rentang waktu 5-30 menit dan perendaman teh guano selama 30 menit efektif menurunkan populasi nematoda, serta interaksi terbaik yang menghasilkan daya tumbuh paling tinggi ditunjukkan pada perlakuan kontrol dengan waktu 10, 15, 20, 25, dan 30 menit, perendaman teh guano dengan waktu 5, 10, 25 menit, dan perendaman air panas dengan waktu 5 dan 10 menit. Pada varietas IPB 3S, penurunan populasi terbaik ditunjukkan pada perendaman teh guano dengan waktu 5 dan 30 menit, sedangkan daya tumbuh terbaik ditunjukkan pada perendaman air panas dengan waktu 5 menit.
Asosiasi Baru New association between Cecidochares connexa (M.) (Diptera: Tephritidae) and local parasitoids: Revisiting classical biological controlantara Cecidochares connexa (M) (Diptera: Tephritidae) dengan Parasitoid Lokal: Sebuah Tinjauan Terhadap Pengendalian Hayati Klasik : Asosiasi baru antara Cecidochares connexa (M) (Diptera: Tephritidae) dan parasitoid lokal: Sebuah tinjauan terhadap pengendalian hayati klasik Harianto, Muhammad; Triwidodo, Hermanu; Agus, Nurariaty; Buchori, Damayanti
Jurnal Entomologi Indonesia Vol 21 No 1 (2024): March
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.21.1.63

Abstract

The gall fly Cecidochares connexa (L.) (Diptera: Tephritidae) was introduced in Bantimurung, Polewali Mandar Regency,  South Sulawesi in 1999, to control the Siam weed Chromolaena odorata, an invasive weed from Florida, United States. However, some previous studies have shown that C. connexa can be attacked by local predators and parasitoids, which can affect the effectiveness of C. connexa in the field. The objective of the research is to study the new interaction and association between  the introduced C. connexa, and local parasitoids. The research was conducted in April-December 2021 at two habitats namely open fields and cocoa plantations, in four villages of Polewali Mandar Regency. Purposive sampling was conducted to collect C. odorata infested by the gall flies. Thirty C. odorata samples were collected from three different sites at each habitat and each village. The galls were grouped into two different categories i.e. those with and with out holes. The galls with holes were then reared until the insects emerged and the insect specimens were identified. The research results showed that the gall numbers, healthy and parasitized C. connexa at opened areas were significantly higher as compared to cocoa plantations. Parasitism phenomenon indicated the new interaction and association between the C. connexa with the local parasitoids. The parasitization rate of C. connexa in the opened fields (23.24%) was not significantly with in the cocoa plantations (28.84%). On the parasitized C. connexa were found four families of parasitoids i.e. Eulophidae, Braconidae, Eupelmidae, and Ormyridae. The dominant parasitoid found was Quadrastichus sp.1, with the parasitization rate of 14% in open fields and 10% in cocoa plantations.
Assessing the Influence of Flowering Plants and Landscape Composition on Host-Parasitoid Food Webs Sataral, Mihwan; Rizali, Akhmad; Winasa, I Wayan; Triwidodo, Hermanu; Buchori, Damayanti
HAYATI Journal of Biosciences Vol. 32 No. 6 (2025): November 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.6.1551-1563

Abstract

The introduction of flowering plants into agricultural landscapes can significantly impact host-parasitoid food webs, although the extent of these effects varies depending on landscape characteristics. This study examined the effects of habitat manipulation by introducing flowering plants on the complexity of herbivore-parasitoid food webs in agricultural landscapes. Using Shannon diversity, links per species, linkage density, and vulnerability, we assessed the effects of flowers planted in maize fields. Herbivore collections were conducted at 2, 4, 6, 8, and 10 weeks after planting. Bipartite network analysis identified nine host morphospecies (Lepidoptera) in maize fields, revealing eight morphospecies in fields without flowering plants and six in fields with flowering plants. Eight major parasitoids were recorded, with Paratetracnemoidea sp.1 and Telenomus remus dominating fields without flowering plants, whereas T. remus was the most prevalent in fields with flowers. Spodoptera frugiperda emerged as the dominant host in both fields, whereas Lymantriidae sp.2 was present in low numbers in both field types. These results indicate that flowering plants enhance Shannon diversity and linkage density. However, the composition of the surrounding landscape can obscure these benefits, leading to simplified food web structures as the agricultural fields expand. Our findings underscore the significance of landscape context in shaping crop-herbivore-parasitoid interactions, offering valuable insights into sustainable agricultural management practices.
Penerapan Inovasi Teknologi dalam Meningkatkan Hasil Tangkapan Ikan bagi Nelayan di KUB Bugel Yusfiandayani, Roza; Triwidodo, Hermanu; Wulandari, Zakiah; Ruscitasari, Zulfatun; Millaty, Marosimy; Novianto, Irwan; Kelana, Fajar Sidik Abdullah; Diantoro, Aris Kusumo
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 3 (2024): Agrokreatif Jurnal Ilmiah Pengabdian Kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.10.3.353-362

Abstract

Service activities were conducted in the Bugel Peni II and III Joint Business Group (KUB) in Bugel Village, Kulonprogo Regency. Fishermen who join this group often do not get maximum catches because they face various obstacles, such as limited technology and unpredictable weather conditions. This community service aims to provide portable FAD innovations and determine the success of using portable FADs in fishermen's catches. Portable FADs are proposed for this service activity to provide a solution to minimize losses due to these obstacles. Portable FADs are an innovation that stimulates fish behavioral responses using sound waves with a specific frequency on an attractor, developing from the concept of conventional FADs. The implementation method begins with outreach to fishermen in the Bugel Peni II and III Joint Business Group (KUB) regarding the concept and benefits of portable FADs. Practical training was carried out on the installation and use of these tools and education regarding their positive impact on fish catches. In addition, data collection was carried out through direct observations in the field to understand fish responses to portable FADs. The positive impact of this service activity is that the application of portable FADs provides in-depth insight into the urgency of using technology to increase fish catches by fishermen. Apart from that, this service activity also provides important insight regarding the natural factors fishermen face in implementing portable FADs, such as weather uncertainty, increasingly scarce fish resources, and natural conditions, namely high waves, which are the main obstacles in achieving the expected results.
Pengaruh sinar bulan terhadap telur Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) pada lahan bawang merah Triwidodo, Hermanu; Fauziah, St Nurlaela
Jurnal Entomologi Indonesia Vol 17 No 1 (2020): Maret
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.763 KB) | DOI: 10.5994/jei.17.1.45

Abstract

Spodoptera exigua (Hübner) are nocturnal insects and one of the important pests of shallot. The activities of nocturnal insects are influenced by the moonlight. The aim of this research is to analyze the effect of moonlight on oviposition behaviour: number of egg patches, number of eggs per patches and egg gpatches distribution pattern of S. exigua. The research was done on three shallot field at Brebes Regency, Central Java during the new, half and full moon. The sampling included observing the number of egg groups, the number of eggs per egg group, and egg groups distribution pattern of S. exigua on each observation plot. The egg groups distribution pattern of S. exigua based on Morisita index. The result of this research showed that the number of egg groups and the number of eggs per egg group always increased from the new, half, and full moon. In general, the egg groups distribution pattern of S. exigua were clustered on three moonlight conditions. High intensity of moonlight (full moon) was be able to increase the number of egg groups and the number of eggs per egg groups of S. exigua, its potentially cause more attacks.
Ketahanan enam galur padi sawah (Oryza sativa L) terhadap wereng batang coklat (Nilaparvata lugens Stål) asal Patokbeusi, Subang : Resistance of six lowland rice lines (Oryza sativa, L .) to brown planthopper (Nilaparvata Lugens, Stål.) from Patokbeusi, Subang Triwidodo, Hermanu; Nurmansyah, Ali; Sartiami, Dewi; Amanatillah, Niky Elfa; Meliyana; Lukvitasari, Luna
Jurnal Entomologi Indonesia Vol 20 No 3 (2023): November
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.20.3.240

Abstract

Release of new varieties requires qualitative as well as quantitative characters of the lines. For rice varieties, resistance to brown plant hopper (BPH) (Nilaparvata lugens, Stål) (Hemiptera: Delphacidae) is an important character that should be tested. The purpose of this study was to determine the resistance of new rice lines of rice cultivar to BPH. In this study, the tests were carried out on 6 (six) lines of candidate varieties developed by IPB University, namely TCIPB202101, TCIPB202102, TCIPB202103, TCIPB202104, TCIPB202105, and TCIPB202106. Resistance to BPH assays was conducted by screening and population development tests. Inpari 30 and Ciherang varieties were used as controls. The results showed that the TCIPB202106 line is the most resistant to BPH attack, while the TCIPB202103 line is the most susceptible to BPH attack. The average number of nymphs in the TCIPB202106 line was three times lower than those in Inpari 30 and Ciherang. The results of the population growth test were in line with the results of the screening test which indicated that the TCIPB202106 line is classified as moderately resistant to BPH.
Rapid assessments of the rice brown planthopper (Nilaparvata lugens Stal) outbreak in Semarang District, Central Java: Effects of farmers' low KAP: Belajar dari kajian cepat ledakan wereng coklat (Nilaparvata lugens Stal) di Kabupaten Semarang, Jawa Tengah: Pengaruh dari rendahnya PST petani Triwidodo, Hermanu; Istiaji, Bonjok; Efriani, Nurul Farida; Retnowati, Lilik; Amanatillah, Niky Elfa
Jurnal Entomologi Indonesia Vol 20 No 2 (2023): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.20.2.137

Abstract

Rapid assessments on the outbreak of rice brown planthoppers (BPH) (Nilaparvata lugens Stal) were conducted to investigate the status of BPH populations and the causative factors behind the outbreak. These assessments served as the basis for developing a proper action program. The assessments took place in Banyubiru Sub-District, Semarang District covering four villages (Kebondowo, Rowoboni, Tegaron, Kebumen) in December 2013. We analyzed BPH data, along with information about farmers' practices in managing pests collected through interviews conducted in January 2018 in Indramayu. Additionally, we examined data on the number of BPH-infested areas in Java from 2010 to 2020 and the stock of insecticides in Java in 2021. Simple statistical analyses were carried out. The BPH population had spread throughout Banyubiru and was present in all sampled plots. The average number of BPH eggs ranged from 115.25 to 379.65 per rice hill, while the BPH nymphs and imagoes ranged from 3.42 to 11.87 per rice hill. The relatively low nymphs to imagoes ratio might be influenced by the high BPH predator populations, which ranged from three to six individuals per rice hill. Suspected causes of BPH resistance and resurgence included the application of banned and improper insecticides, as well as the repeated use of the same insecticide active ingredients for an extended period. It is recommended to discontinue the mass spraying of insecticides to prevent further plant damage. In 2022, the Pest Control Movement has suggested replacing chemical insecticides with biological or natural pesticides. Intensive extension programs are strongly needed.
Co-Authors . Widodo Akhmad Rizali ALI NURMANSYAH Ali Wafa Amanatillah, Niky Elfa Amanda Mawan Andi Sadapotto Andika Septiana Suryaningsih Anggun Agustini Azri Kusuma Dewi Bonjok Istiaji CHRISTIAN HANSJOACHIM SCHULZE DAMAYANTI BUCHORI Dede Dirgahayu Dede Maryana Desy Nur Avifah Dewa Gede Wiryangga Selangga DEWI SARTIAMI Diantoro, Aris Kusumo Dudung Darusman Dwi Andini Shiami Efi Toding Tondok Efriani, Nurul Farida Fathan Hadyan Rizki Fauziah, St Nurlaela Florentina Sri Hardiyanti Purwadhi HAJRIAL ASWIDINNOOR Harianto, Muhammad Harleni Harleni Hasmiandy Hamid Hazen Arrazie Kurniawan Husni dan Zulfanazli Pudjianto Alfian Rusdy Hutasoit, Rudi Tomson I Nengah Surati Jaya I WAYAN SUANA I Wayan Winasa Irwan Novianto Kartodihardjo, Hariadi Kelana, Fajar Sidik Abdullah Kenneth Puliafico Kooswardhono Mudikdjo Kooswardhono Mudikdjo Listihani, Listihani Lukvitasari, Luna Luna Lukvitasari Lutfi Afifah Maizul Husna Tanjung Mappatoba Sila MARIETJE PESIRERON Marietje Pesireron Meity S. Sinaga Meity Suradji Sinaga Meliyana Mihwan Sataral Millaty, Marosimy Muhammad Achmad Chozin Muhammad Ardiansyah Murgianto, Fitrah Najmi, Lailatun Neo Endra Lelana Noor Farikhah Haneda NURARIATY AGUS Nurmala Katrina Pandjaitan Phor Bho Ayuwati PURNAMA HIDAYAT Raden Mohamad Herdian Bhakti RAUF, AUNU Rein Estefanus Senewe Retnowati, Lilik Roza Yusfiandayani Rudi Tomson Hutasoit Rully Anwar Ruly Anwar Sagala, Siti Rizkah Senewe, Rein Estefanus Senewe, Rein Estefanus Senewe, Rein Estefanus SJAFRIDA MANUWOTO Sri Utami Supramana Suryo Wiyono Susanna Susanna Syafrida Manuwoto Syafrida Manuwoto Syarifah Syarifah, Syarifah TARUNI SRI PRAWAST MIEN KAOMINI ANY ARYANI DEDY DURYADI SOLIHIN Tawakkal, Muhammad Iqbal Titiek Siti Yuliani Ujang Wawan Darmawan Victoria Coo Lea Widodo Widodo Widodo Widodo Wildan Muhlison, Wildan Woro Anggraitoningsih Noerdjito Yani Maharani Yendra Pratama Setyawan Yundari, Yundari Zakiah Wulandari Zulfatun Ruscitasari