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All Journal AGRIVITA, Journal of Agricultural Science Planta Tropika Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Jurnal Perlindungan Tanaman Indonesia Jurnal Agrotek Lestari Agrotechnology Innovation (Agrinova) Kingdom (The Journal of Biological Studies)

Siwi Indarti

Department Of Plant Protection, Faculty Of Agriculture, Universitas Gadjah Mada Jln. Flora No. 1, Bulaksumur, Sleman, Yogyakarta 55281 Indonesia

Author-ID : 442970

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Environmental Science Public Health Veterinary

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Potato Cyst Nematode in East Java: Newly Infected Areas and Identification Happy Cahya Nugrahana; Siwi Indarti; Edhi Martono
Jurnal Perlindungan Tanaman Indonesia Vol 21, No 2 (2017)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.25498

Potato Cyst Nematodes (PCN), Globodera rostochiensis has noted to be a devastated pest on potato in Indonesia. It is listed as the A2 pest by Plant Quarantine of Republik Indonesia, and it was also being a highly concerned plant parasitic nematode species worlwide. Therefore, both intensive and extensive surveys should be done to monitor the spread of PCN, especially in East Java as one of the centre of potato plantations in Indonesia. The aim of this study was to study the distribution of PCN in four potato plantations in East Java, i.e. Batu, Magetan, Probolinggo, and Pasuruan which were located between 1,205 to 2,063 m above the sea level. Extraction and isolation of cysts from soil samples was done using Baunacke method, and it was followed by identification of the nematodes using morphological and molecular approaches according to Baldwin and Mundo-Ocampo. The results showed that PCN was found on all sampling sites, i.e. Batu (Sumber Brantas, Jurang Kuali, Tunggangan, Junggo, Brakseng); Magetan (Dadi, Sarangan, Singolangu); Probolinggo (Tukul, Pandansari, Ledokombo, Sumberanom, Wonokerto, Ngadas), Pasuruan (Wonokerto, Tosari, Ledoksari, Ngadiwono). Magetan and Pasuruan were noted as new infested areas in East Java. Both morphological and molecular methods showed that the species found on all sites was Globodera rostochiensis. IntisariNematoda Sista Kentang (NSK), Globodera rostochiensis telah tercatat sebagai hama yang menghancurkan tanaman kentang di Indonesia. NSK terdaftar sebagai Organisme Pengganggu Tumbuhan Karantina golongan A2 oleh Badan Karantina Pertanian Republik Indonesia, dan juga merupakan spesies nematoda parasit tanaman yang sangat merugikan di seluruh dunia. Oleh karena itu, baik survei intensif maupun ekstensif harus dilakukan untuk memantau penyebaran NSK, terutama di Jawa Timur sebagai salah satu sentra tanaman kentang di Indonesia. Tujuan dari penelitian ini adalah untuk mempelajari distribusi NSK pada empat daerah sentra penanaman kentang di Jawa Timur, yaitu Batu, Magetan, Probolinggo, dan Pasuruan yang terletak antara 1.205 sampai 2.063 m di atas permukaan laut. Ekstraksi dan isolasi sista NSK dari sampel tanah dilakukan dengan metode Baunacke, dan dilanjutkan dengan identifikasi secara morfologi dan molekuler menurut Baldwin dan Mundo-Ocampo. Hasil penelitian menunjukkan bahwa NSK ditemukan di semua lokasi pengambilan sampel, yaitu Batu (Sumber Brantas, Jurang Kuali, Tunggangan, Junggo, Brakseng); Magetan (Dadi, Sarangan, Singolangu); Probolinggo (Tukul, Pandansari, Ledokombo, Sumberanom, Wonokerto, Ngadas), Pasuruan (Wonokerto, Tosari, Ledoksari, Ngadiwono). Magetan dan Pasuruan tercatat sebagai daerah sebaran baru di Jawa Timur. Hasil identifikasi secara morfologi dan molekuler menunjukkan bahwa spesies yang ditemukan di semua lokasi adalah Globodera rostochiensis.

Insect Quarantine Status in Association with Imported Commodities from Timor Leste Passed through Agricultural Quarantine Ware of Mota'ain-District of Belu Astuti Handayani; Fransiscus Xaverius Wagiman; Siwi Indarti; Suputa Suputa
Jurnal Perlindungan Tanaman Indonesia Vol 23, No 1 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.25885

Timor Leste is one of the exporting countries of agricultural products to Indonesia via the Mota'ain-Belu Regency cross-border. Imported commodities from the country may constitute those which are possible as Pest Quarantine (PQ) carrier media into Indonesia. The status of insect quarantine associated with imported commodities has been studied. Sampling of imported commodities both as open trucks shipments and toted passenger bags are done based on the Agricultural Quarantine Product Sampling Guidelines using the Non-Statistic method (convenience). Samples of commodities in the form seeds or grains were taken as much as 250 grams, while other forms were taken as much as 500 grams. For this study, 40 sample units were taken from seven commodities. The commodity samples were stored for 30 days at the laboratory of Agricultural Quarantine office in Kupang, as most life cycle of postharvest insects ranges from 3 to 5 weeks. Specimens of the infecting insects were identified and their quarantine status were determined. The results showed that there were eight different insects species found in association with six kinds of commodities, while in one sample of rice no insect was found. In robusta coffee the insects found were Necrobia rufipes, Hypothenemus hampei, Cryptolestes ferrugineus, and Pyralis manihotalis. In arabica coffee we found H. hampei, and C. ferrugineus. In copra, there were N. rufipes, and Carpophilus dimidiatus. In red beans, there were Callosobruchus chinensis. In mixed red beans, peanuts, and soybeans C. chinensis, C. dimidiatus, and Sitophilus oryzae were found, and in the candlenut there were Oryzaephylus surrinamensis, and C. dimidiatus. All of the insects found in the examined commodities had plant pests status. The highest number of insects associated with the examined commodities from 40 sample units were H. hampei insects found in arabica coffee, which were 62.3 individuals. N. rufipes insects in copra commodity samples appeared on the 25th day after sampling, which meant they were the fastest among other insects.

Optimalization of Temperature to Control Araecerus fasciculatus de Geer (Coleoptera: Anthribidae) on Nutmeg Dwi Rachmanto; Fransiscus Xaverius Wagiman; Siwi Indarti
Jurnal Perlindungan Tanaman Indonesia Vol 22, No 1 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.26014

The exported nutmeg of Indonesia is frequently affected by the coffee bean weevil, Araecerus fasciculatus de Geer (Coleoptera: Anthribidae), so that it should be fumigated prior to export. CH3Br is an effective fumigant as quarantine measure for export products for 24 h, but this fumigant has been prohibited. Therefore, air temperature treatment is one of the alternative strategies. This research was aimed to determine the optimum air temperature in controlling A. fasciculatus on nutmeg. Healthy nutmeg, infected and A. fasciculatus-containing nutmeg, as well as individual adults of A. fasciculatus were treated with air temperature of 30−70°C for 1−24 h. The optimum air temperature was the lowest temperature which could kill 100% of examined insects. The results showed that 100% mortality of A. fasciculatus adults outside nutmeg occurred at air temperature of 45°C for 12 h or 50°C for 6 h. Meanwhile, 100% mortality of life stadium of A. fasciculatus inside nutmeg happened at air temperature of 55°C for 24 h. The raising of air temperature at 30−50°C for 24 h decreased the water content of nutmeg from 5.59±0.25 to 3.79±0.24%. The increment of temperature from 50 to 55°C for 24 h reduced the weight of nutmeg from 5.20±0.72 to 5.04±0.70 g. Air temperature treatment at 45−50°C for 12−24 h could eliminate adults of A. fasciculatus on exported nutmeg and air temperature of 55°C for 24 h could remove all life stadia of A. fasciculatus within nutmeg. IntisariBiji pala ekspor Indonesia sering diserang oleh kumbang bubuk biji kopi, Araecerus fasciculatus de Geer (Coleoptera: Anthribidae), sehingga harus difumigasi sebelum diekspor. Tindakan karantina pada produk ekspor yang sering menggunakan CH3Br efektif selama 24 jam, namun fumigan ini sudah dilarang. Oleh karena itu, perlakuan suhu udara merupakan salah satu alternatifnya. Penelitian ini bertujuan untuk menentukan suhu udara optimal untuk mengendalikan A. fasciculatus pada biji pala. Biji pala yang sehat, biji pala yang terserang dan berisi serangga A. fasciculatus serta imago A. fasciculatus diperlakukan dengan suhu udara 30−70°C selama 1−24 jam. Suhu udara optimal yaitu suhu terendah yang dapat membunuh 100% serangga uji. Hasil penelitian menunjukkan bahwa 100% mortalitas imago A. fasciculatus di luar biji pala terjadi pada suhu udara 45°C selama 12 jam atau 50°C selama 6 jam. Sementara itu, mortalitas 100% stadia hidup A. fasciculatus di dalam biji pala terjadi pada suhu udara 55°C selama 24 jam. Kenaikan suhu udara 30−50°C selama 24 jam menurunkan kadar air biji pala dari 5,59±0,25 menjadi 3,79±0,24%. Peningkatan suhu dari 50 menjadi 55°C selama 24 jam menurunkan berat biji pala dari 5,20±0,72 menjadi 5,04±0,70 g. Perlakuan suhu udara 45−50°C selama 12−24 jam dapat mengeliminasi imago A. fasciculatus pada biji pala ekspor dan suhu udara 55°C selama 24 jam dapat mengeliminasi semua stadia hidup A. fasciculatus di dalam biji pala.

Plant Parasitic Nematode Abundance and Diversity in Potato (Solanum tuberosum) Cultivation at Various Altitudes in Wonosobo and Banjarnegara Khairunnisa Lubis; Siwi Indarti; Nugroho Susetya Putra
Jurnal Perlindungan Tanaman Indonesia Vol 25, No 2 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.26018

Plant-parasitic nematodes are one of the causes of yield loss in potato cultivation. Currently, information on the diversity, abundance, and dominance of potato parasitic nematode genera is not available. This research aimed to determine the pattern of distribution, abundance, and dominance of parasitic nematode genera on potato plant (Solanum tuberosum) in Wonosobo and Banjarnegara Districts at various altitudes i.e.: 1,250–1,500; 1,500–1,750; 1,750–2,000; and 2,000–2,250 meters above sea level (m.a.s.l.). Soil rhizosphere and root samples were collected, and nematodes were extracted using the Whitehead tray modification technique. The nematodes were adjusted with Formalin Acetic acid Alchohol (FAA), mounted, and identified based on morphological characters. The diversity index was determined to distinguish plant-parasitic nematode diversity. Six genera of potato plant-parasitic nematodes were found, namely Meloidogyne, Hirschmanniella, Globodera, Criconemoides, Helicotylenchus, and Xiphinema. The highest population of plant-parasitic nematodes was found at 1,250–1,500 m.a.s.l. from both root and soil samples. The nematode populations were 56.67 nematodes/5 g root and 103.33 nematodes/100 g of soil. The abundance of parasitic nematodes did not differ significantly among different altitudes in both districts. The dominant parasitic nematodes in soil samples were Meloidogyne with 16.78%, while Globodera was 13.98%. The Shannon-Wiener index implied that the diversity of parasitic nematodes of potato plants and stability of community in Wonosobo and Banjarnegara Districts were categorized as low.

First Record: A Stem and Bulb Plant Parasitic Nematode at Garlic Area Centre Temanggung, Central Java, Indonesia with Species Reference to Ditylenchus dipsaci Siwi Indarti; Arif Wibowo; Siti Subandiyah; Miftahul Ajri
Jurnal Perlindungan Tanaman Indonesia Vol 22, No 2 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.35321

A survey to investigate the stem and bulb plant parasitic nematode at one of garlic area centre, in Temanggung, Central Java, Indonesia was conducted from Januaryto February 2018. Infected plant with specific symptoms, morphological and morphometric characters both of female and male of adult nematodes were used to describe a A1 quarantine plant parasitic nematode Ditylenchus dipsaci. Seven from nine observed locations were postively infected with population in average 2.67 nematodes per 100 g of soil and 2.67–189.33 per bulb. This is the first report of D. dipsaci from Indonesia and consequently further investigations were needed to know their distribution and also to confirm the origin of the nematode. IntisariSurvei keberadaan nematoda parasit batang dan umbi dilakukan pada bulan Januari–Februari 2018 pada satu sentra penangkaran bawang putih di Temanggung, Jawa Tengah, Indonesia. Tanaman terinfeksi dengan gejala serangan yang spesifik, karakter morfologi dan morfometri nematoda betina dan jantan dewasa dipergunakan dalam identifikasi Ditylenchus dipsaci yang merupakan nematoda parasit tanaman yang termasuk OPTK A1 (Organisme Pengganggu Tanaman Karantina A1) di Indonesia. Sebanyak tujuh dari sembilan lokasi yang diamati mengindikasikan positif sebagai daerah sebaran nematoda tersebut dengan populasi rata-rata 2,67 ekor per 100 gram tanah dan 2,67–189,33 nematoda per umbi. Laporan pertama tentang nematoda D. dipsaci ini membawa konsekuensi perlunya penelitian lebih lanjut untuk mengetahui daerah sebaran dan juga konfirmasi dari mana nematoda tersebut berasal.

Analysis of Volatile Compound at Different Age of Corn Crops Used as Bemisia tabaci Repellent Retno Wikan Tyasningsiwi; Witjaksono Witjaksono; Siwi Indarti
Jurnal Perlindungan Tanaman Indonesia Vol 23, No 1 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.35954

Bemisia tabaci is one of the red chili pests that plays a role as a Begomovirus vector. This vector can be controlled through Integrated Pest Management (IPM) practices. One of the potential practices is by utilizing corn as a barrier crop to prevent the vector from attacking the main crop. The aim of this research was to examine the repellence activity of the volatile compound obtained from various ages of corn crop against B. tabaci. The volatile compound was collected from the corns at 4 week after planting (WAP), 6 WAP, 8 WAP, 10 WAP, and 12 WAP. Volatile compound capture device was designed with two solvents, i.e. hexane and ethanol, then the volatile compound analyzed by Gas Chromatography Mass Spectrometry (GC-MS). B. tabaci repellency against volatile compound was examined using Y-tube olfactometer. Each treatment was employed with 5 replications. Data were analyzed using ANOVA with 95% and further analyzed by Least Significant Different (LSD). The parameter observed was the total of B. tabaci avoided the volatile compound tested until half of the control olfactometer arm. The results showed that all ages of the corn produced repellent compound and the most optimal were corn aged 12 WAP with repellency rate of 83.72%. GC-MS analysis identified the volatile compound were citronella, limonene, β-phellandrene, β-caryophyllene, 1.8 cineole, farnesol, caryophyllene, and patchouli alcohol.

Detection and Development of Infestation Rate of Aphelenchoides besseyi on Various Rice Seed Varieties Nikmatul 'Azizah; Siwi Indarti; Ani Widiastuti; Y. Andi Trisyono
Jurnal Perlindungan Tanaman Indonesia Vol 23, No 2 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.45558

Aphelenchoides besseyi is a seed borne nematode caused white tip disease. Infested rice seeds are beneficial inoculum source forA. besseyi widespread. The objective of this research was to determine the occurence and development of symptom level caused by A. besseyi in rice seed varieties. The research was done by detecting A. besseyi in rice seed using Hoshino and Togashi method and counting the nematode population in the seed; observing the incubation time and measuring disease incidence every week. The result revealed that A. besseyi was found in 16 of 17 varieties, i.e. R1 IR64, R2 IR64, R3 IR64, R1 Situbagendit, R2 Situbagendit, Inpari 33, R1 Memberamo, R2 Memberamo, R3 Memberamo, R1 Way Apo Buru, R2 Way Apo Buru, Mekongga, Pepe, Ketan, Sintanur, and Ciherang.A. besseyi infection increased every week in many varieties depend on quantitative (statistics) and qualitative (symptom) indicators. There were 4 varieties have to be investigate further because they were infested by A. besseyi>30 nematodes/100 seeds, i.e. R1 Way Apo Buru, R1 Situbagendit, Ketan and R3 IR 64. A practice that is also required is the elimination of A. besseyi inoculum in rice seed before cultivate.

Preference of the Waterlily Aphid, Rhopalosiphum nymphaeae (Hemiptera: Aphididae) on Four Hostplants Ilmam Zul Fahmi; Nugroho Susetya Putra; Siwi Indarti; Satoru Sato
Jurnal Perlindungan Tanaman Indonesia Vol 25, No 1 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.62855

Waterlily aphid Rhopalosiphum nymphaeae is one of the aphids that have many hosts, including Azolla filiculoides, Limnobium laevigatum, Monochoria vaginalis and Spirodela polyrhiza. The aim of this study was to study the effect of host shift and confirm the results of previous studies on the effect of nitrogen and carbon factors among A. filiculoides, L. laevigatum, M. vaginalis and S. polyrhiza on the level of aphid preference and number of offspring. Analysis of the nitrogen and carbon content of plants was also carried out to confirm the preference and number of offspring produced by aphids. The study began with maintaining aphids on the four tested hosts, up to the 4th generation. Twenty five individuals were randomly selected from each host, then released on the inner wall of the plastic container (14 x 7.5 x 15 cm3) which was filled with four hosts arranged side by side. Observations were made every 24 hours up to 97 hours starting from the first hour after treatment. Observations after 97 hours showed that waterlily aphids imago preferred L. laevigatum the most (49.28%), then on M. vaginalis (20.43%), S. polyrhiza (16.33%), and A. filiculoides (1.75%). Meanwhile, the number of offspring produced by each group of aphids that selected on four hosts were: 46.65 individuals on L. laevigatum, 37.8 individuals on M. vaginalis, 19 individuals on S. polyrhiza, and 0.6 individuals on A. filiculoides. The analysis showed that the highest nitrogen content was found in M. vaginalis (4.16%), followed by S. polyrhiza (3.71%), L. laevigatum (2.33%), and A. filiculoides (2.08%).

Identification of Pathogens Causing Bulb Rot Disease on Garlic (Allium sativum L.) in Central Java, Indonesia Lutfi Arifin; Siwi Indarti; Arif Wibowo
Jurnal Perlindungan Tanaman Indonesia Vol 25, No 1 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.64743

Garlic bulb rot disease was found from garlics (Allium sativum L.) cultivated from 2017 to 2019 by farmers in Central Java Province, Indonesia. The initial symptoms of the disease were stunted, leaf yellowing, and necrotizing to rotten bulbs. This research was conducted to determine the major causal agent of garlic bulb rot disease in Central Java. A survey was carried out in five regencies across Central Java that were major garlic-producing areas. Nematodes were isolated using water immersion methode and pathogenic fungi were isolated on Potato Dextrose Agar (PDA). Nematode identification was carried out based on the Ditylenchus dipsaci morphological and morphometric character. Seven isolates of Fusarium species were obtained from infected garlic. Identification of four chosen isolates were performed by sequencing the TEF-1α gene. The TEF sequence of isolate TB3, KK1, and KK4 showed 99% similarity with several F. oxysporum, BT3 sequences showed 98% identity with several F. solani, and all were deposited in the NCBI GenBank. Three locations were positively infected by the interaction between D. dipsaci and Fusarium sp. Based on the results of the morphological identification, parasitic nematode was identified as D. dipsaci, while based on the morphological and molecular identification isolates Fusarium were identified as F. oxysporum and F. solani, respectively, as first report causal agents of garlic bulbs rot in Central Java.

Resistance of Spodoptera exigua Population from Nganjuk against Methomyl, Chlorfenapyr, and Emamectin Benzoate Aziz, Abdul; Martono, Edhi; Indarti, Siwi; Trisyono, Y. Andi
Jurnal Perlindungan Tanaman Indonesia Vol 27, No 2 (2023)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.83646

Spodoptera exigua Hubner (Lepidoptera: Noctuidae) is the main pest of shallot causing significant economic losses. The continuous use of insecticides has resulted S. exigua to develop resistant against them. This study aims to determine the level of S. exigua resistance of Nganjuk and Bantul populations against methomyl, chlorfenapyr, and emamectin benzoate and temporal resistance of S. exigua of Nganjuk population to methomyl. Nganjuk population were sampled in June, September, and December. First instar larvae from the first generation were used tested using the leaf-dipping method. Temporal resistance test was carried out using the same concentrations. The resistance ratios of Nganjuk population to the insecticides methomyl, chlorfenapyr, and emamectin benzoate were 58.8; 8.8; and 2.5 fold respectively. The LC50 values of S. exigua of Nganjuk population collected in June, September, and December were 1127.44; 50.62; and 366.76 mg [AI] liter-1, respectively. The results of this study indicated that the S. exigua of Nganjuk population was highly resistant to methomyl and its level has changed over time. Resistance management by rotating the type of insecticide is not sufficient but should also consider its change of resistance pattern over time.

Co-Authors Abdul Aziz Agustinur, Agustinur Aji Suhandy Ajri, Miftahul Angesom Asgele Gebregziabher Ani Widiastuti Arif Wibowo Arif Wibowo Astuti Handayani Ayu Suci Wulandari Ayu Suci Wulandari B. Triman B. Triman Bambang Rahayu T. P. Bambang Rahayu T.P. Bambang Rahayu T.P. Bambang Rahayu TP Donny Widianto Donny Widianto Dwi Rachmanto Edhi Martono Edhi Martono Fardatun Muamiroh Fransiscus Xaverius Wagiman Fransiscus Xaverius Wagiman Gebregziabher, Angesom Asgele Happy Cahya Nugrahana Ilmam Zul Fahmi Irfan Dwidya Prijambada Khairunnisa Lubis Kurniasari, Irianti Lilis Indarti Lilis Setyowati LILIS SETYOWATI Lutfi Arifin Maharani, Rina Mulyadi Mulyadi Mulyadi Mulyadi Nikmatul 'Azizah Nugroho Susetya Putra Nurjanah Nurjanah R. Edwin Indarto Ratna Widowati Resty Islamiati Putri Retno Wikan Tyasningsiwi Rika Fatimah PL Rinda Fajrin Aldina, Rinda Fajrin Rudi Hari Murti Satoru Sato SEDYO HARTONO Siti Subandiyah Subandi Supriyadi Supriyadi Supriyadi Supriyadi Supriyanta Supriyanta Supriyanta Supriyanta Suputa Suputa Taryono Taryono Taryono Taryono Tata Rina Wahyu Pujiati Tien Aminatun Tri Harjaka Waele, Dirk De Witjaksono Witjaksono Y. Andi Trisyono Y. Andi Trisyono Y. Andi Trisyono

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