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All Journal JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Jurnal Komputasi Jurnal Agrotek Tropika Menara Perkebunan
Radix Suharjo
Jurusan Agroteknologi, Fakultas Pertanian Universitas Lampung
Agriculture, Biological Sciences & Forestry Computer Science & IT

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THE WHITE-BELLIED PLANTHOPPER (HEMIPTERA: DELPHACIDAE) INFESTING CORN PLANTS IN SOUTH LAMPUNG, INDONESIA Susilo, Franciscus Xaverius; Swibawa, I Gede; ., Indriyati; Hariri, Agus Muhammad; ., Purnomo; Hasibuan, Rosma; Wibowo, Lestari; Suharjo, Radix; Fitriana, Yuyun; Dirmawati, Suskandini Ratih; ., Solikhin; ., Sumardiyono; Rwandini, Ruruh Anjar; Sembodo, Dad Resiworo; ., Suputa
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 17, No 1 (2017): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (427.494 KB) | DOI: 10.23960/j.hptt.11796-103

Abstract

The White-Bellied Planthopper (Hemiptera: Delphacidae) Infesting Corn Plants in South Lampung, Indonesia. Corn plants in South Lampung were infested by newly-found delphacid planthoppers. The planthopper specimens were collected from heavily-infested corn fields in Natar area, South Lampung. We identified the specimens as the white-bellied planthopper Stenocranus pacificus Kirkaldy (Hemiptera: Delphacidae), and reported their field population abundance.
IDENTIFIKASI DAN TINGKAT SERANGAN PENYEBAB PENYAKIT BULAI DI LAMPUNG TIMUR, PESAWARAN, DAN LAMPUNG SELATAN Kurniawan, Adam Fajar; Prasetyo, Joko; Suharjo, Radix
Jurnal Agrotek Tropika Vol 5, No 3 (2017)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (240.208 KB) | DOI: 10.23960/jat.v5i3.1824

Abstract

Penyakit bulai di Provinsi Lampung semula diidentifikasi disebabkan oleh satu spesies. Beberapa tahun terakhir ini laporan menyebutkan bahwa penyakit bulai pada tanaman jagung disebabkan oleh beberapa spesies Peronosclerospora.Penelitian ini bertujuan untuk mengetahui spesies Peronosclerospora.penyebab penyakit bulai pada tanaman jagung di tiga kabupaten di Provinsi Lampung dan untuk mengetahui persentase gejala, kerapatan, viabilitas spora bulai di tiga kabupaten tersebut. Penelitian dilaksanakan pada bulan Januari sampai dengan Juli 2016 di lahan pertanaman jagung milik petani dan di laboratorium hama dan penyakit tanaman Fakultas Pertanian Universitas Lampung. Pengamatan di lapangan dilakukan dengan menghitung insiden penyakit bulai di tiga kabupaten dengan cara mengambil 3 dari 30 baris tanaman jagung. Setiap daerah pengamatan terdiri dari dua lokasi pertanaman jagung yang berbeda sehingga terdapat enam lokasi yang berbeda-beda pada setiap kabupaten tersebut. Hasil penelitian menunjukkan bahwa penyakit bulai disebabkan oleh dua spesies yaitu Pernosclerospora sorghi, dan Peronosclerospora maydis.P. sorghi menyerang tanaman jagung di Kabupaten Lampung Timur dengan produksi spora sebesar 3,12 x 10 5 spora per ml dan viabilitas sebesar 35,67% dengan insiden penyakit 19,33%, spesies P. sorghi juga menyerang tanaman jagung di Kabupaten Pesawaran dengan produksi spora sebesar 3,22 x 10 5 per ml dan viabilitas sebesar 35,67% dengan insiden penyakit 28,37%. Kemudian P. maydis menyerang tanaman jagung di Kabupaten Lampung Selatan dengan produksi spora sebesar 3,07 x 10 5 per ml dan viabilitas sebesar 35,60% dengan insiden penyakit 28,37%.
INFLUENCE OF CULTURE MEDIUM ON THE SPORULATION AND VIABILITY OF ASPERGILLUS SPP. AND TALAROMYCES SPP. ENTOMOPATHOGENIC FUNGI Fitriana, Yuyun; Suharjo, Radix; Swibawa, I Gede; ., Purnomo; Lestari, Puji; Merdiana, Eryka
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 1 (2018): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (510.453 KB) | DOI: 10.23960/j.hptt.11812-22

Abstract

Influence of Culture Medium on the Sporulation and Viability of Aspergillus spp. and Talaromyces spp. Entomopathogenic Fungi. The purpose of this study was to determine the effect of three kinds of cultures media on the spore production and viability of Aspergillus spp. (AS1, 6, 7, 9) and Talaromyces spp. (AS2?5, 8, 10) entomopathogenic fungi. This study was arranged using Factorial-Completely Randomized Design (CRD) with 2 factors and 3 replications. The first factor was three kinds of cultures media (potato dextrose agar (PDA), corn meal agar (CMA), and sabouraud dextrose agar (SDA)) and the second one was isolates of Aspergillus spp. Or Talaromyces spp.. Data of spore production and spore viability were tested using ANOVA and if there was significantly difference, the data then further analyzed using Tukey?s Honestly Significant Difference (HSD) test at 5% of significant level. The spore production of Aspergillus spp. were in the range of 0.58 - 14.27 x 108 spores mL-1 (PDA); 0.28 ? 2.68 x 108 spores mL-1 (SDA) and 1.85 - 5.33 x 108 spores mL-1 (CMA). The highest spore production was achieved by AS1 isolate that was grown on PDA media. The spore produced by Talaromyces spp. were in the range of 2.15 ? 28.62 x108 spores mL-1 (PDA); 0.28 ? 29.43 x108 spores mL-1 (SDA); and 1.88 ? 16.63 x108 spores mL-1 (CMA). The highest spore production was produced by AS8 isolate which were cultured on PDA. The spore viability among isolates of the two entomopathogenic fungi were not significantly different. The spore viability of Aspergillus spp. was in the range of 95.10 ? 97.66% (PDA), 94.02 ? 98.45% (SDA) and 92.86 ? 98.20% (CMA). The spore viability of Talaromyces spp. was in the range of 95.83 ? 100% (PDA), 85.83 ? 100% (SDA), and 90.75 ? 100% (CMA). Culture medium influenced spore production but not the spore viability. The best culture media used for spore production of both of the entomopathogenic fungi was PDA media.
DIVERSITY AND ABUNDANCE OF NEMATODES IN GUAVA (Psidium guajava L.) CULTIVATION IN LAMPUNG Nabilah, Nabilah; Swibawa, I Gede; Suharjo, Radix; Fitriana, Yuyun
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol. 21 No. 2 (2021): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jhptt.221134-143

Abstract

Diversity and abundance of nematodes in guava (Psidium guajava L.) cultivation in Lampung. Crystal guava agroecosystem is inhabited by many species of plant parasitic nematodes. However, information regarding this topic was still limited. This study aimed to understand the species dominancy of nematodes in crystal guava cultivation in Lampung. Sampling was carried out in three locations of guava crystal plantations: Lampung Timur, Lampung Tengah, and Tanggamus. The laboratory analysis was done at the Plant Pest Science Laboratory and Agricultural Biotechnology Laboratory, Universitas Lampung. The study was conducted in December 2019 – July 2020. Nematodes were identified to the level of the genus. The Prominance value (PV) was used to assess the nematodes genus dominancy. The results showed that the nematodes inhabiting the crystal guava agro-ecosystem in Lampung was both plant parasitic and free-living nematodes. The plant parasitic nematodes were identified as Meloidogyne, Aphelenchus, Hemicriconemoides, Tylenchus, Aphelenchoides, and Xiphinema, while free-living nematodes was Rhabditis, Dorylaimine, Dorylaimus, and Mononchus. The dominant plant parasitic nematode was Meloidogyne and the dominant free-living nematode was Rhabditis. The abundance of Meloidogyne /300 mL of soil was 351.47 individuals in Lampung Timur, 124.27 individuals in Lampung Tengah, and 82.18 individuals in Tanggamus. The dominant free-living nematode in the three locations was Rhabditis.
SISTEM IDENTIFIKASI PENYAKIT TANAMAN PADI DENGAN MENGGUNAKAN METODE FORWARD CHAINING Ika Arthalia Wulandari; Aristoteles Aristoteles; Radix Suharjo
Jurnal Komputasi Vol 4, No 1 (2016)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/komputasi.v4i1.1216

Abstract

Rice plant diseases can be identified from their symptoms. To find out exactly the rice plant disease, it will need agricultural experts. Numbers and distributions of agricultural expert are very limited and they cannot overcome the problems optimally, so that a system containing knowledge as what experts do is required. This research was to design web-based experts system by using forward chaining method and certainty factor. Data processed in this system were 16 diseases and 26 of disease symptoms. This system which was developed had superiorities and easiness in accessing it, user friendly and displaying certainty levels from diagnosis results with 81% of customer’s satisfaction. Kata Kunci –experts, expert system, forward chaining, rice plant diseases.
POTENSI ERIONOTA THRAX SEBAGAI AGEN PENYEBAR PATOGEN PENYEBAB PENYAKIT LAYU BAKTERI PADA TANAMAN PISANG (BLOOD DISEASE BACTERIUM) Radix Suharjo, Edhi Martono, dan Siti Subandiyah .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 6 No. 2 (2006): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (516.148 KB) | DOI: 10.23960/j.hptt.26100-106

Abstract

Potential of Erionota thrax to spread the causal agen of banana bacterial wilt (Blood Disease Bacterium). This study was conducted in Gerbosari, Samigaluh, Kulonprogo, Yogyakarta and in the Laboratory of Bacteriology and Entomology, Faculty of Agriculture, Gadjah Mada University, Yogyakarta during December 2002 to June 2003. The aim of this study was to find out the potency of Erionota thrax to spread Blood Disease Bacterium the causal agent of banana blood disease in Indonesia. A field survey was conducted to record the existance of Blood Disease Bacterium in larvae and adult E. thrax. The results show that Blood Disease Bacterium was not found in the larval stage of E. thrax. In the adult of E. thrax, the pathogen was found on the legs, wings, body surface, head and head surface, but it was not found inside the body of E. thrax.
HUBUNGAN ANTARA FREKUENSI KEDATANGAN IMAGO ERIONOTA THRAX PADA BUNGA PISANG DAN KETERJADIAN PENYAKIT LAYU BAKTERI PISANG PADA LAHAN SAWAH, TEGALAN DAN PEKARANGAN Radix Suharjo, Siti Subandiyah ,dan Edhi Martono .
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 8 No. 1 (2008): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (335.533 KB) | DOI: 10.23960/j.hptt.1847-54

Abstract

Relationship Between Arrival Frequency of Erionota thrax to the Banana’s Flower and Disease Incidence of Banana Bacterial Wilt in Wet Rice Field, Dry Field and House Yard. This research was conducted in the Sub District of Samigaluh, Kulon Progo and Laboratory of Bacteriology, Plant Protection Department, Faculty of Agriculture, Gadjah Mada University, Yogyakarta December 2002 to June 2003. The aim of this research was to investigate relationship between arrival frequency of Erionota thrax to the banana’s flower and disease incidence of Banana Bacterial Wilt in the three diffrent land uses (wet rice field, dry field and house yard). A survey method was done in this research. Stratified purpossive sampling was performed to collect the data. Strata used were wet rice field, dry field and house yard. Observation of the arrival frequency of E. thrax was done to the flowering banana. Data that collected in this study were disease incidence of Banana Bacterial Wilt and arrival frequency of E. thrax to the banana’s flower. The data was analized with Correlation test using SPSS 11.5 for windows with 5% of significant level. The results showed that the arrival frequency of imago E. thrax to the banana’s flower per one flowering seasons (5 days) were 17.65 imago (wet rice field), 15,65 imago (dry field) and 11 imago (house yard). Meanwhile, the disease insidence of Banana Bacterial wilt in the three different land uses were 5.41% (wet rice field), 3.81% (dry field) and 7.10% (house yard). Correlation analysis showed that there was no relationship between arrival frequency of E. thrax to the banana’s flower and the disease insidence of Banana Bacterial Wilt in the three different land uses. Its means that the arrival frequency of E. thrax to the banana’s flower did not influence the disease incidence of banana bacterial wilt in those areas.
EKSPLORASI POTENSI GULMA SIAM (CHROMOLAENA ODORATA) SEBAGAI BIOFUNGISIDA PENGENDALI PHYTOPHTHORA PALMIVORA YANG DIISOLASI DARI BUAH KAKAO Radix Suharjo; Titik Nur Aeny
Jurnal Hama dan Penyakit Tumbuhan Tropika Vol. 11 No. 2 (2011): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.629 KB) | DOI: 10.23960/j.hptt.211201-209

Abstract

The research was aimed to investigate: (1) distribution and population of Chromolaena odorata (siam weed) in different land-uses (paddy field, untreated land, houseyard, roadside and river/irigation side) in Bandar Lampung, South Lampung, Tanggamus, and East Lampung; (2) effect of C. odorata extract on in-vitro growth of Phytophthora palmivora, (3) effect of C. odorata extract on development of fruit rot symptom caused by P. palmivora on cocoa pod in the laboratory and in the field. Collecting of P. palmivora isolates and recording distribution and population of C. odorata were conducted in several locations known as endemic areas of cocoa pod rot disease. The effect of C. odorata extract on the growth of P. palmivora on agar media and cocoa pods was determine in the Laboratory of Plant Disease, Plant Protection Department, Faculty of Agriculture, University of Lampung. Field experiment was performed in a cocoa plantation in Kemiling, Bandar Lampung. The results showed that C. odorata weed can be found in all of the land-uses surveyed, but the highest population was found in the untreated land-use. The tips (young leaves and stems) extract of C. odorata showed a greater inhibition effect on the growth of P. palmivora compared to the root extract. The tips extract showed the best inhibition in-vitro growth of P. palmivora at 40% concentration level, inhibited symptom development on cocoa pods in the laboratory at 50% concentration level, and on cocoa pods in the field at 60% concentration level.
IDENTIFIKASI ISOLAT Trichoderma spp., GADING REJO, TANGGAMUS DAN LAMPUNG TIMUR YANG BERPOTENSI ANTAGONIS TERHADAP ANTRAKNOSA CABAI Muhammad Nurdin; Adi Setiawan; Suskandini Ratih; Radix Suharjo
Jurnal Agrotek Tropika Vol 9, No 3 (2021): JURNAL AGROTEK TROPIKA VOL 9, SEPTEMBER 2021
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v9i3.5277

Abstract

Jamur Trichoderma spp., merupakan salah satu agen hayati yang banyak dikembangkan berdasarkan potensi antagonisnya terhadap beberapa penyakit tanaman. Berdasarkan potensi antagonisnya, pada penelitian ini digunakan tiga koleksi isolat Trichoderma spp., yang berasal dari tiga wilayah berbeda (Gading Rejo, Tanggamus dan Lampung Timur) guna pengendalian penyakit antraknosa cabai secara in vitro. Penelitian ini bertujuan untuk mengetahui spesies dan jumlah pasang basa koleksi isolat Trichoderma spp., serta mendapatkan isolat yang memiliki kemampuan antagonis terbaik terhadap jamur Colletotrichum capsici penyebab penyakit antraknosa pada cabai.
PENGARUH EKSTRAK GULMA SIAM, KEMUNING DAN SALIARA TERHADAP PENGHAMBATAN PERTUMBUHAN BAKTERI LAYU PISANG SECARA IN VITRO Nova Adelina Lubis; Titik Nur Aeny; Joko Prasetyo; Radix Suharjo
Jurnal Agrotek Tropika Vol 5, No 1 (2017)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (88.908 KB) | DOI: 10.23960/jat.v5i1.1845

Abstract

Salah satu penyakit penting pada tanaman pisang adalah penyakit layu bakteri, yang disebabkan olehBlood Disease Bacterium (BDB). Beberapa jenis tanaman telah dilaporkan mengandung senyawa antibakteri yang dapat menjadi alternatif pengendalian penyakit tanaman yang disebabkan oleh bakteri. Penelitian ini bertujuan untuk mengetahui pengaruh ekstrak Chromolaena odorata, Murraya paniculata dan Lantana camara terhadap penghambatan perrtumbuhan BDB secara in vitro. Penelitian dilakukan di Laboratorium Bioteknologi Fakultas Pertanian Universitas Lampung pada Maret hingga Juli 2016. Perlakuan disusun menggunakan Rancangan Acak Lengkap dalam faktorial. Faktor pertama adalah lama perendaman bahan tanaman sebelum diekstrak dan faktor kedua adalah tingkat konsentrasi ekstrak. Pengamatan dilakukan terhadap diameter zona penghambatan pada 24 jam setelah aplikasi. Data diuji dengan analisis ragam dan nilai tengah antar perlakuan diuji dengan uji Beda Nyata Terkecil (BNT) pada taraf 5%. Hasil penelitian menunjukkan bahwa pada perlakuan ekstrak kemuning, interaksi antara lama perendaman dan tingkat konsentrasi berpengaruh nyata terhadap diameter zona penghambatan BDB sedangkan pada ekstrak gulma siam dan saliara interaksinya tidak nyata. Diameter zona penghambatan paling tinggi ekstrak gulma siam, kemuning dan saliara dalam menghambat pertumbuhan BDB secara berurutan adalah 85%, 55% dan 95%.
Co-Authors Adhy ARIYANTO Adi Setiawan Agus Muhammad Hariri, Agus Muhammad Anak Agung Gede Sugianthara Aristoteles, Aristoteles Dad Resiworo Sembodo, Dad Resiworo David IRVANTO Franciscus Xaverius Susilo, Franciscus Xaverius I GEDE SWIBAWA, I GEDE Ika Arthalia Wulandari Indriyati . Joko Prasetyo Joko Prasetyo Kurniawan, Adam Fajar Lestari Wibowo Maria Viva RINI Maya Gustina Merdiana, Eryka Muhammad Nurdin Muhammad Nurdin Muhammad Nurdin Nabilah Nabilah Nova Adelina Lubis PUJI LESTARI Purnomo Purnomo Rosma Hasibuan, Rosma Rudianto Butarbutar Ruruh Anjar Rwandini, Ruruh Anjar Solikhin ., Solikhin Suputa Suputa Suskandini Ratih Dirmawati Titik Nur Aeny Titik Nur Aeny Yuyun Fitriana