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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

Author-ID : 280503

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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Brown Planthoppers Infestations and Insecticides Use Pattern in Java, Indonesia Hermanu Triwidodo
AGRIVITA, Journal of Agricultural Science Vol 42, No 2 (2020)
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.v0i0.2501

In Brown Planthopper (BPH) has caused losses of rice production in Java due to excessive use of pesticides. This research aims to determine the relationship between crop damages caused by BPH and insecticides use schemes. The pesticide use schemes by farmers were observed in 15 districts on Java which were reported for having severe BPH attacks i.e. Banyuwangi, Jember, Blitar, Kediri, Lamongan, Tuban, Bojonegoro, Pati, Demak, Pekalongan, Tegal, Klaten, Sukoharjo and Indramayu, Subang. Most of the sample plots in 15 districts were in the category of damage levels 2 and 3. Most of districts having rice plantations were affected by BPH with insecticides. Rice plants that have the highest level of damage are those with over-pesticide application. There is a significant influence between insecticide use schemes and BPH attack rates in the field. BPH attacks increase in line with the increased use of pesticides, in terms of application frequency, the various types of pesticides, and the number of sprayed mixture pesticides. Many farmers use pesticides that are prohibited for rice cultivation, such as the Pyrethroid and Organophosphate groups. However, the incidence of BPH attacks stilloccur even though there are differences in the pesticide status of legality

DETEKSI KONDISI KETAHANAN PANGAN BERAS MENGGUNAKAN PEMODELAN SPASIAL KERENTANAN PANGAN Dede Dirgahayu; I Nengah Surati Jaya; Florentina Sri Hardiyanti Purwadhi; Muhammad Ardiansyah; Hermanu Triwidodo
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 2 No. 2 (2012): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.2.2.85

In 2005 and 2009, BKP and WFP has provided food security conditions in Indonesia on Food Insecurity Map which were developed using food availability, food accessibility, food absorption and food vulnerability. There are 100 out of 265 districts in Indonesia or about 37,7%, which fall into the vulnerable to very vulnerable categories, where 11 districts were found in Java. The main objective of this research is to develope a spatial model of the rice production vulnerability (KPB) based on Remote Sensing and GIS technologies for estimating the food insecurity condition. Several criteria used to obtain food vulnerability information are percentage level of green vegetation (PV), rainfall anomaly (ACH), land degradation due to erosion (Deg), and paddy harvest failure due to drought and flood in paddy field (BK). Dynamic spatial information on the greenness level of land cover can be obtained from multitemporal EVI (Enhanced vegetation Index) of MODIS (Moderate Resolution Imaging Spectroradiometer) data. Spatial information of paddy harvest failure caused by drought and flood was estimated by using vegetation index, land surface temperature, rainfall and moisture parameters with advance image processing of multitemporal EVI MODIS data. The GIS technology were used to perform spatial modelling based on weighted overlay index (multicriteria analysis). The method for computing weight of factors in the vulnerability model was AHP (Analytical Hierarchy Process). The spatial model of production vulnerability (KPB) developed in this study is as follows: KPB = 0,102 PV + 0,179 Deg + 0,276 ACH + 0,443 BK. In this study, level of production vulnerability can be categorized into six classes, i.e.: (1) invulnerable; (2) very low vulnerability; (3) low vulnerability; (4) moderately vulnerable; (5) highly vulnerable; and (6) extremely vulnerable. The result of spatial modelling then was used to evaluate progress production vulnerability condition at several sub-districts in Indramayu Regency. According to the investigation results of WFP in 2005, this area fall into moderately vulnerable category. Only few sub-districts that fall into highly and extremely vulnerable during the period of May ~ August 2008, namely: Kandanghaur, Losarang, part of Lohbener, and Arahan.Keywords: remote sensing, GIS, food vulnerability, vegetation index, AHP

PESTISIDA RUMAH TANGGA UNTUK PENGENDALIAN HAMA PERMUKIMAN PADA RUMAH TANGGA Titiek Siti Yuliani; Hermanu Triwidodo; Kooswardhono Mudikdjo; Nurmala K Pandjaitan; Syafrida Manuwoto
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 1 No. 2 (2011): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.1.2.73

Pesticides have become public’s need for most of Indonesian people, especially those who live in urban areas. This is due to pesticide application is the only way used by those community to control urban pest population. Unfortunately, that choice has bad impact to human health and the environment. The objective of the study was determine the factors that influence people's behavior in choosing the type of pesticides and formulation, to classify home pesticides toxicity used by the public to urban pests control, the impact of pesticides to human health and proper application based instruction manual written on the label. Data assessment revealed that peoples were very annoyed with the presence of urban pest, such as mosquitoes, ants, cockroaches, and flies. Although ants were more frequently found with higher population level, but people felt that the most disturbing one was mosquito, because they were very worry about dengue fever. To control these pests, pesticides with active ingredients cypermethrin, imiprothrin, and tansfluthrin were the most widely used by the community. Most people used pesticides with the toxicity level classified as Ib – III, according to WHO toxicity classification. The impact of pesticide exposures to human health were/ the symptoms poisoning or symptoms similar to poisoning. As much as 44.5% of people surveyed showed the symptom related to respiratory problems, 25 % of people experienced dizziness, 2.5% experienced itching on the skin, 12.5% experienced nausea and vomiting, and 5.36% had fainted. Survey was also found that 52.35% of respondents read pesticide label before use it, meanwhile 61.90% of respondents did not use pesticide properly, the later found in those who read the label or those who didn’t. Keyword: home pesticides, active ingredient, urban pest, and housewife, environmental

Gejala dan Intensitas Serangan Serangga Fitofagus pada Sagu [The Symptoms and Intensity Attacks of Phytophagous Insects on Sago] Rein Estefanus Senewe; Hermanu Triwidodo; Nfn Pudjianto; Aunu Rauf; Marietje Pesireron
Buletin Palma Vol 20, No 1 (2019): Juni 2019
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/bp.v20n1.2019.57-68

The growth and development of sago palm naturally interact with the organism such as insects. The symptoms of damage to the plant canopy sago indicate a relationship between insects and plants. This study aims to identify phytophagous insects, symptoms of damage and attack rates on sago plants. The study was conducted in the village of Rutong and Tulehu in Maluku, starting in June until September 2016. There are 10 plants/sago clump in each observations in each location determined by purposive sampling. Each sago clump in the growth phase (seedlings, tillers, a trunk stage, and stems / trees), observed symptoms of damage to leaflets and leaf midribs. The results showed four symptoms of attack on the sago canopy with an average intensity of mild attacks. The highest incidence of attack was 37.5% in the phase of a trunk stage with the symptoms of cutout attacks on the leaves. Then seven species phytophag insects were obtained which were associated with sago canopy. Each of the insect imago phases leads to leaf damage with distinctive features, which can potentially cause severe damage to the canopy of the sago plant.ABSTRAKPertumbuhan dan perkembangan tanaman sagu secara alami berinteraksi dengan organisme diantaranya serangga. Gejala kerusakan tajuk tanaman sagu menunjukkan adanya hubungan antara serangga dan tanaman. Tujuan penelitian adalah untuk mengidentifikasi serangga fitofag, gejala kerusakan dan tingkat serangan pada tanaman sagu. Penelitian dilakukan pada areal sagu di Desa Rutong dan Tulehu Provinsi Maluku, dimulai bulan Juni – September 2016. Tersedia 10 tanaman/rumpun sagu ditiap lokasi pengamatan yang ditentukan secara purposive sampling. Setiap rumpun sagu pada fase pertumbuhan (semai, anakan, sapihan, dan batang/pohon), diamati gejala kerusakan anak daun dan pelepah daun. Hasil penelitian menunjukkan empat gejala serangan pada tajuk tanaman sagu dengan rata-rata intensitas serangan ringan. Insidensi serangan tertinggi (37.5%) pada fase sapihan dengan gejala serangan bentuk guntingan pada daun. Selanjutnya diperoleh tujuh jenis serangga fitofagus yang berasosiasi dengan tajuk tanaman sagu. Masing-masing fase imago serangga menimbulkan kerusakan daun dengan ciri khas berbeda, sehingga dapat berpeluang menimbulkan kerusakan berat pada tajuk tanaman sagu.

Pengaruh cendawan endofit terhadap biologi dan statistik demografi wereng batang cokelat Nilaparvata lugens Stál (Hemiptera: Delphacidae) Amanda Mawan; Damayanti Buchori; Hermanu Triwidodo
Jurnal Entomologi Indonesia Vol 12 No 1 (2015): Maret
Publisher : Perhimpunan Entomologi Indonesia

Endophytic fungi is an endosymbiont that lives within host plant tissues and does not necessary cause any harm to plants. This type of fungus are important as mediators in plant-herbivore interactions. One of the endophytic fungi in rice is Nigrospora sp. The effects of Nigrospora sp. on the biology and demographic statistic of Nilaparvata lugens Stál (Hemiptera: Delphacidae) were studied in the laboratory. We used Nigrospora sp. culture powder was used to inoculate the fungi to rice seeds by mixing 10 g of flour endophytic per 1 kg rice seeds. The mixture was then stored in damp and dark storage. Results showed that the rice seeds treated with endophytic fungi showed some resistance to N. lugens. Eggs and early stages of nymph mortality was increased, higher than the control. Endophytic fungi also affect the nymphs growth rates by slowing it down, prolonging N. lugens life cycle, preoviposition period as well as delayed the age at first reproduction. N. lugens population growth is effected by Nigrospora sp. in laboratory scale. Thus, it has the potential as an alternative way to control N. lugens population. In addition, inoculation of endophytic fungi could be a useful method for protecting rice plants from N. lugens.

Biologi dan statistik demografi kutudaun Rhopalosiphum rufiabdominale (Sasaki) dan Tetraneura nigriabdominalis (Sasaki) (Hemiptera: Aphididae) di akar padi Purnama Hidayat; Harleni Harleni; Yani Maharani; Hermanu Triwidodo
Jurnal Entomologi Indonesia Vol 16 No 3 (2019): November
Publisher : Perhimpunan Entomologi Indonesia

Rhopalosiphum rufiabdominale (Sasaki) and Tetraneura nigriabdominalis (Sasaki) are aphid species found in the roots of rice plants. Information about the host range and biology of R. rufiabdominale is relatively known than T. nigriabdominalis. This study aims to determine the biology and demographic statistics of R. rufiabdominale and T. nigriabdominalis in the roots of rice plants. The aphids obtained from lowland rice roots in Leuwiliang, Bogor Regency were maintained and reared in Ciherang variety rice roots in the laboratory. Each individual of the 1st instar aphid nymph in the same cohort was infested into the roots of rice in 60 plastic containers for biological observations and statistical demographic variable data collection. Survivorship (lx), fecundity (mx), and the average number of nymphs born by adult every day at age (x) are used to calculate demographic statistical parameters. The results showed that the two species of the aphids have 4 nymph instars. Life cycle and longevity of R. rufiabdominale were 4.98 days and 15.94 days with fecundity of 67.44 respectively, whereas the life cycle and longevity of T. nigriabdominalis were 5.25 days and 18.11 days with fecundity of 11.11 respectively. R. rufiabdominale aphids have an intrinsic growth rate (r) of 0.46 days and a doubling time (DT) of 1.50 days, whereas T. nigriabdominalis has an intrinsic growth rate of 0.14 days and a doubling time of 4.99 days. The results of this study indicate that although the life cycle lengths of the two species are almost the same, the population of R. rufiabdominale develops 3.5 times faster than T. nigriabdominalis and therefore R. rufiabdominale has the potential to become an more important pest in rice plants.

Biologi dan statistik demografi Thrips parvispinus Karny (Thysanoptera: Thripidae) pada tanaman cabai (Capsicum annuum Linnaeus) Rudi Tomson Hutasoit; Hermanu Triwidodo; Ruly Anwar
Jurnal Entomologi Indonesia Vol 14 No 3 (2017): November
Publisher : Perhimpunan Entomologi Indonesia

Thrips parvispinus Karny (Thysanoptera: Thripidae) is one of the major pests of chili pepper in Indonesia. The pest can be found on all parts of the plants, especially flowers and leaves. Information of the biology and demographic statistic of T. parvispinus are still limited. The objective of this research was to study the biology and demographic statistic of T. parvispinus in Bogor. Fifty individual of 1st instar nymphs were reared on caged chili pepper leaves (d = 4 cm and h = 8 cm). Chilli pepper leaves were replaced everyday and observed daily to determine the development and number of offspring eggs. The collected data were used to obtain information about the biology of the pest such as the stadia of each instar, preoviposition period, life cycle, adult longevity, and fecundity. The data were also used to construct life tables for demographic statistic analysis using of the Jackknife method. There were 5 phases of immature stages of T. parvispinus: eggs, two instars nymph, prepupa, and pupa with their stadia were 4,79, 1,36, 3,54, 1,08, and 1,96 days respectively. The preoviposition period of the insect was 1,11 days, life cycle was 13,68 days, female longevity was 8,55 days, male longevity was 6,00 days, and fecundity was 15,33 eggs per female. The population development of T. parvispinus followed type III of survivorship curve with intrinsic rate of increase was 0,15 individual per days female per days, net reproductive rate was 5,71 individual per female per generation, generation time was 11,49 days and doubling time was 4,57 days.

Komunitas serangga pada tanaman orok-Orok (Crotalaria striata) di berbagai habitat Hasmiandy Hamid; Damayanti Buchori; Syafrida Manuwoto; Hermanu Triwidodo
Jurnal Entomologi Indonesia Vol 4 No 2 (2007): September
Publisher : Perhimpunan Entomologi Indonesia

To study insect community at orok-orok plantation (Crotalaria striata) from different habitat, we observed insects that interacted with Crotalaria plantation. There were four habitat type that used in this research, habitat open area and others were agroforestry habitat. We counted about nine ordo from insect that interacted with Crotalaria plant. More than 70% member of ordo, include to Hymenoptera, specially Formicidae. Not all function member of the ordo that known, but some of them are pollinator, parasitoid, predator and herbivore.

Serangan Arthroschista hilaralis Walk. (Lepidoptera: Pyralidae) pada tegakan jabon (Neolamarckia cadamba [Roxb.] Bosser) di Sumatera Selatan Sri Utami; Hermanu Triwidodo; Pudjianto Pudjianto; Aunu Rauf; Noor Farikhah Haneda
Jurnal Entomologi Indonesia Vol 15 No 1 (2018): Maret
Publisher : Perhimpunan Entomologi Indonesia

Infestation of pest is a major problem in the seedling and field of Jabon (Neolamarckia cadamba [Roxb.] Bosser) in Indonesia, especially in South Sumatra. Arthroschista hilaralis Walk. (Lepidoptera: Pyralidae) is one defoliator pest attacked jabon stands. Some information about the infestation of A. hilaralis are required for pest control and prevent. The objective was to study the incidence level and intensity level of A. hilaralis on jabon stands at the planting age 2 and 4 years at the 2 seasons, and analyze the effect of weather (temperature and humidity) to foliar damage caused by A. hilaralis. This experiment was conducted in six locations in South Sumatra. The plots were delineated in three area that each plot was 0.03 ha in area and contain 20 jabon trees. Observations on the incidence and intensity level of A. hilaralis were conducted every month for 16 months representing two categories of time point observation of the rainy season and dry season. The results showed that infestation of A. hilaralis on jabon stands at the planting age 2 years and the rainy season was higher than planting age 4 years and another season. The incidence level and intensity level of A. hilaralis were 74.45% and 55.21% respectively. Weather factors (e.g. temperature and humidity) thought affected the incidence level and intensity level of A. hilaralis. Temperature has negative correlation to the incidence level of A. hilaralis (r = -0.629; p = 0.009) and to the intensity level of A. hilaralis (r = -0.546; p = 0.029). Humidity has positive correlation to the incidence level of A. hilaralis (r = 0.900; p < 0.0001) and to the intensity level of A. hilaralis (r = 0.768; p = 0.0005).

Siklus hidup dan statistik demografi kutukebul Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) biotipe B dan non-B pada tanaman cabai (Capsicum annuum L.) Purnama Hidayat; Hazen Arrazie Kurniawan; Lutfi Afifah; Hermanu Triwidodo
Jurnal Entomologi Indonesia Vol 14 No 3 (2017): November
Publisher : Perhimpunan Entomologi Indonesia

The whitefly Bemisia tabaci (Gennadius) biotype B also known as Bemisia argentifolii (Gennadius) is a more malignant whitefly biotype in damaging plants compared to non-B biotype. Currently the whitefly B. tabaci biotype B has been reported to exist in Indonesia. Basic information such as life cycle, length of life, fecundity, and breeding ability of a whitefly is important information as a basis in preparing the whitefly control strategy. The aim of this research was to study the life cycle and demographic statistic of the B. tabaci biotype B and the non-B biotype on chili pepper. The study was conducted by observing the development of the whiteflies from eggs to adult in a growth chamber that the temperature and lighting were controlled. Observations were made on several aspects of biology and some parameters of demographic statistics. The results showed that the biotype B of B. tabaci has several different biological aspects with the non-B whitefly in chili pepper. The life cycle of the biotype B of B. tabaci and the non-B were different, 33.27 and 30.86 days respectively. The biotype B of B. tabaci had a net reproduction rate (R0) which was similar to that of the non-B biotype as well as the average of its generation. However, the intrinsic increase rate (r) of the biotype B B. tabaci was 2.5 times shorter than the non-B biotype. The biotype B of B. tabaci doubled its population (DT) 2 times faster than the non-B biotype. It is clear that the biotype B of B. tabaci potentially more dangerous than the non-B.

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

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