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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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Keanekaragaman kumbang curculionid pada berbagai tipe penggunaan lahan di kawasan Hutan Harapan, Jambi Lailatun Najmi; Damayanti Buchori; Hermanu Triwidodo; Woro Anggraitoningsih Noerdjito; Akhmad Rizali
Jurnal Entomologi Indonesia Vol 15 No 2 (2018): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.15.2.59

Abstract

Family Curculionidae is a group of beetles (Order Coleoptera) that have an important role in different ecosystems, either as herbivores or pollinators. Land-use change, mainly from natural forest to agriculture area can have negative affect on population of  curculionid beetles. The objective of this research was to study seasonal diversity, both in terms of species richness and abundance of curculionid beetles in different land-use types in Hutan Harapan landscape, Jambi. Curculionids were sampled using fogging methods. The study was conducted in four different land-use types i.e. forest, jungle rubber, rubber, and oil palm plantations in both dry (from May to September 2013) and rainy season (from November 2013 to February 2014). Four plot each of 50 m x 50 m were set up in the four land use types. We found 1762 individuals belonging to 12 subfamili and 118 species curculionid beetle. The most abundant species was found in forest (81 species) and the lowest was in the rubber plantations (20 species). The most common curculionid that were found in each land-use type were Curculioninae sp.21 (forest), Entiminae sp.06 (jungle rubber), Scolytinae sp.09 (rubber plantation) and Elaeidobius kamerunicus Faust (oil palm plantations). The highest abundance of curculionid was in oil palm plantations (853 individual) and the lowest was in rubber plantations (33 individual). Land-use type and vegetation diversity affect species richness but not abundant of curculionids. Analysis showed that different season significantly affect composition of curculionid in the forest but it has no effect in other land use types.
The effect of mixed cultivars plantings on pest abundance and grain yields in rice Azri Kusuma Dewi; Hermanu Triwidodo; Muhammad Achmad Chozin; Hajrial Aswidinnoor
Jurnal Entomologi Indonesia Vol 15 No 2 (2018): July
Publisher : Perhimpunan Entomologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5994/jei.15.2.101

Abstract

A field study was carried out to assess the effects of mixed cultivar plantings on grain yields and on the abundance of pests in rice. Increasing plantation species diversity through cultivar mixtures is often claimed to decrease pest problems while stabilizing or even increasing yield, but the effects on pest abundance of planting rice cultivar mixtures in Indonesia have not been extensively studied. We tested for changes in pest abundance in experimental plots planted with five genetically distinct rice cultivars, combined in two different mixture arrangements (seed mix and row mix). These mixes were cultivated in lowland paddy areas, in replicated randomized block designs, during two growing seasons. Pest abundance was measured weekly in all plots, and rice yields were measured at harvest time. The results showed that the average abundance of pests was reduced in plots planted with cultivar mixes, compared to those planted with monocrops comprised of each of the component cultivars. Plots planted with the seed mix showed consistently reduced brown plant-hopper (Nilaparvata lugens (Stål)) abundance compared to monocrops in each growing season, with a relative reduction in pest abundance of 29.83% at the end of season 1 and 6.61% at the end of season 2, respectively. Plots planted with the row mix consistently showed decreased stem borer abundance compared to monocrops in each growing season, with a relative reduction in pest abundance of 100% at the end of season 1 and 1.4% at the end of season 2, respectively. In terms of yield, plant height proved to be a consistent yield component character, correlating positively with plant yield for both seed mix and row mix in both growing seasons. Our results showed higher average yields –and plant heights--for the mixed genotype plots compared to pure genotype stands in 2013. We found a greater relative increase in the yield of seed mix plots than row mix, measuring 7.26% and  4.63%, respectively in 2013. Among the two types of mixtures, seed mix showed higher overall grain yield. Our findings suggest that rice farmers can both increase yield and decrease pest abundance by planting cultivar mixes.
Pengaruh sinar bulan terhadap telur Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae) pada lahan bawang merah Hermanu Triwidodo; St Nurlaela Fauziah
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.
Pengaruh lokasi terhadap serangan lalat puru Cecidochares connexa (Macquart) pada tumbuhan eksotik invasif Chromolaena odorata (L.) King & Robinson dan interaksinya dengan komunitas serangga lokal Luna Lukvitasari; Hermanu Triwidodo; Akhmad Rizali; Damayanti Buchori
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.18.2.127

Abstract

The gall fly, Cecidochares connexa (Macquart) was first introduced to Indonesia to control the invasive weed Chromolaena odorata (L.) King & Robinson or kirinyuh. The purpose of this study was to determine the effect of habitat type and location, and the presence of natural enemies associated with gall flies on their level of attack. This research was be conducted in various types of habitat in Bogor and South Lampung from January to December 2019. Thirty plant samples were obtained using the area species curve method. Sampling was conducted to collect gall in each habitat, it was followed by rearing gall for ± 1 month to see insects that came out from the gall at the Biological Control Laboratory, Department of Plant Protection, Faculty of Agriculture, IPB University. The results of this study indicate that the location of the observation affects the level of attack on gall flies against kirinyuh and parachitization of gall flies by parasitoid, while the habitat does not affect both. Then there are other insects associated with kirinyuh in addition gall flies in gall, namely Lonchaea sp.
The Isolation, Selection and Determination of Endophytic Bacteria from Bamboo, Gamal, Tulsi, and Alamanda Hermanu Triwidodo; Listihani listihani
SEAS (Sustainable Environment Agricultural Science) Vol. 5 No. 2 (2021)
Publisher : Warmadewa University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.557 KB) | DOI: 10.22225/seas.5.2.4068.151-162

Abstract

Endophytic bacteria have many benefits, including increasing plant growth by producing phytohormones, increasing the production of mineral absorption, nitrogen fixation, reducing damage due to weather changes and increasing plant resistance to disease. Based on the above, it is necessary to select endophytic bacteria from various plants to be used as biocontrol agents. This study aims to obtain endophytic bacterial isolates that have the potential as biocontrol agents and plant growth supporters from bamboo shoots, Gamal, Tulsi, Lotus, and Alamanda. This research method includes sampling, endophytic bacteria isolation, hypersensitive, hemolysis, phosphate solvent, chitinolytic, proteolytic, and antagonist tests. Isolation of endophytic bacteria in 5 plants using 22 plant parts had a diversity of isolates. The isolated plant parts produced 1 to 7 isolates that had different morphology. The total isolates obtained were 59 isolates. In antagonistic observations, there was one isolate of endophytic bacteria that showed a clear zone when tested together with S. rolfsii, namely the isolate with code A24 from allamanda flower. From the data obtained, it is known that the endophytic bacterial isolates had an effect on inhibiting the growth of the pathogenic fungus S. roflsii, the endophytic bacterial isolates Consortium, A21 and the endophytic bacterial isolates A22 had no incidence of disease, while the bacterial isolates T00 (Bx) with an average disease incidence of 40% and 30% disease intensity. Meanwhile isolates A23, A24 and A25 had an average disease incidence ranging from 13.3%-26.6%, while controls had the highest disease incidence, namely 53.3% and disease intensity 66.6%.
Utilization of In Situ Antagonistic Fungus as A Biocontrol Agent of Lasiodiplodia theobromae Causes of Dieback Disease on The Nutmeg Tree in Aceh Selatan Susanna; Meity S. Sinaga; Suryo Wiyono; Hermanu Triwidodo
Jurnal Pertanian Tropik Vol. 5 No. 3 (2018): JURNAL PERTANIAN TROPIK
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (428.226 KB) | DOI: 10.32734/jpt.v5i3.3119

Abstract

Dieback disease caused by Lasiodiplodia theobromae is an important disease on the nutmeg tree in Aceh Selatan. The disease has been widespread in the district. One alternative to control the disease is the use of antagonistic fungi from the nutmeg tree to inhibit the development of the cause of the disease. In vitro experiments were carried out by evaluating 4 types of antagonistic fungi from the nutmeg tree to L. theobromae. The aim of the study was to determine the potential of in situ soil fungus as an antagonistic agents against L. theobromae, the cause of dieback disease on the nutmeg tree in Aceh Selatan. Microbial isolation using serial dilution method. The fungus test which was successfully isolated as an antagonist candidate was carried out through the dual culture method. The results showed that four fungi namely; Trichoderma harzianum, T. virens, T. asperellum, and Talaromyces pinophilus have the potential as antagonistic agents against pathogens cause dieback disease on the nutmeg tree in Aceh Selatan, with inhibitory power ranging from 66-100% in vitro.
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 Hermanu Triwidodo; Bonjok Istiaji; Nurul Farida Efriani; Lilik Retnowati; Niky Elfa Amanatillah
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.
Resistance of Six Lines from Farmers against Bacterial Leaf Blight (Xanthomonas oryzae pv. oryzae) Suryaningsih, Andika Septiana; Triwidodo, Hermanu; Wiyono, Suryo
Jurnal Fitopatologi Indonesia Vol 19 No 4 (2023): Juli 2023
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.19.4.176-181

Abstract

Resistance of Six Lines from Farmers against Bacterial Leaf Blight (Xanthomonas oryzae pv. oryzae) Bacterial leaf blight (BLB) caused by Xanthomonas oryzae pv. oryzae is a disease that detrimental to rice production in Indonesia. One effort to control the disease is to use BLB resistant varieties. This study aims to evaluate the development of bacterial leaf blight on six lines (TCIPB202101, TCIPB202102, TCIPB202103, TCIPB202104, TCIPB202105, and TCIPB202106) and two control varieties (Ciherang and Inpari 30). Green house experiment was conducted in Cikabayan Dramaga using artificial inoculation. The study was conducted by observing the incubation period, lesion length and disease intensity at 7 and 14 days after inoculation (DAI). The results showed that all the lines tested were resistant to BLB and had better resistance compared to the control varieties. The TCIPB202105 and TCIPB202106 lines had the best resistance response with an average disease intensity below 1%. Meanwhile, the TCIPB202101 and TCIPB202102 lines had the highest percentage of disease intensity although they are still considered as moderately resistant category.
Ketahanan enam galur padi sawah (Oryza sativa L) terhadap wereng batang coklat (Nilaparvata lugens Stí¥l) asal Patokbeusi, Subang : Resistance of six lowland rice lines (Oryza sativa, L .) to brown planthopper (Nilaparvata Lugens, Stí¥l.) 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, Stí¥l) (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 Amir Mahmud Andi Sadapotto Andika Septiana Suryaningsih Anggun Agustini Aris Kusumo Diantoro Azri Kusuma Dewi Bonjok Istiaji CHRISTIAN HANSJOACHIM SCHULZE DAMAYANTI BUCHORI Dede Dirgahayu Dede Maryana Desy Nur Avifah Dewa Gede Wiryangga Selangga DEWI SARTIAMI Dudung Darusman Dwi Andini Shiami Efi Toding Tondok Efriani, Nurul Farida Fajar Sidik Abdullah Kelana Fathan Hadyan Rizki 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 Kenneth Puliafico Kooswardhono Mudikdjo Kooswardhono Mudikdjo Lilik Retnowati Listihani, Listihani Lukvitasari, Luna Luna Lukvitasari Luna Lukvitasari Lutfi Afifah Maizul Husna Tanjung Mappatoba Sila Marietje Pesireron MARIETJE PESIRERON Meity S. Sinaga Meity Suradji Sinaga Meliyana Meliyana Mihwan Sataral Millaty, Marosimy Muhammad Achmad Chozin Muhammad Ardiansyah Murgianto, Fitrah Najmi, Lailatun Neo Endra Lelana Niky Elfa Amanatillah Noor Farikhah Haneda NURARIATY AGUS Nurmala Katrina Pandjaitan Nurul Farida Efriani Phor Bho Ayuwati PURNAMA HIDAYAT 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 St Nurlaela Fauziah 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