http://jhpttropika.fp.unila.ac.id/index.php/jhpttropika/issue/feed Jurnal Hama dan Penyakit Tumbuhan Tropika 2020-11-24T09:22:50+07:00 Admin JHPT Tropika jhpt.tropika@fp.unila.ac.id Open Journal Systems <p><em><strong>Jurnal Hama dan Penyakit Tumbuhan Tropika</strong></em> (<em>JHPT Tropika</em>) publishes articles in plant pests, plant pathogens, plant damage caused by those pests and pathogens and or their management in tropical and sub tropical areas. In addition to basic and applied research papers, <em>JHPT Tropika</em> publishes short communications that have not been published. Before being accepted for publication, all manuscripts must be peer reviewed. The journal is published sixmonthly in March and September. The <em>JHPT Tropika </em>is published by Plant Protection Department, Faculty of Agriculture, University of Lampung Indonesia in collaboration with Entomological Society of Indonesia and Indonesian Phytopathological Society.</p> <p><span style="text-decoration: underline;"><em><strong>Accredited by Directorate General of Higher Education</strong> <strong>(DIKTI), Decree No 30/E/KPT/2018</strong></em></span></p> http://jhpttropika.fp.unila.ac.id/index.php/jhpttropika/article/view/591 Konservasi Parasitoid Trichogramma Sp. Melalui Rekayasa Agroekosistem Tanaman Padi (Oryza Sativa L.) Untuk Mengendalikan Hama Penggerek Batang Padi (Scirpophaga Innotata) 2020-11-24T09:22:50+07:00 putri novia sari sari noviasariputri9@gmail.com nanang tri haryadi Haryadi.nt@unej.ac.id nanang tri haryadi haryadi Haryadi.nt@unej.ac.id <p>Rice stem borer (<em>Scirpophaga innotata</em>) is one of the pests in rice plants which can cause rice production to decline every year. Rice stem borer attack can reduce yields by 18.4%, where rice stem borer can be found throughout the year and spread throughout Indonesia in various rice ecosystems. Therefore it is necessary to have a control that is considered quite effective, safe and environmentally friendly for control, namely by using parasitoids through agroecosystem engineering. This study aims to determine the effect of agroecosystem complexity using refugia, which allows the preservation of biodiversity against parasitoid dispersal. This research was conducted at Jubung Agroteknopark, University of Jember and Food and Horticultural Plant Pest Observation Laboratory (FHPPO), Tanggul, Jember. This study used a Completely Randomized Design (CRD) with 4 treatments and 6 repetitions of the treatment in the form of Control (P0), Refugia <em>Cosmos caudatus</em> without <em>Trichogramma</em> sp. (P1), <em>Trichogramma</em> sp. without refugia <em>Cosmos caudatus</em> (P2), Refugia <em>Cosmos caudatus</em> and <em>Trichogramma</em> sp. (P3). Followed by the Duncan test at 5% level. The results showed that the use of refugia and the parasitoid Trichogramma sp. able to inhibit the hatching of Rice Stem Borer eggs so as to obtain a high level of parasitation, while the control results showed significantly different results from other treatments. Treatment Trichogramma sp. Parasitation level control. which were found to be lower and the number of larvae and the intensity of the attack of the Rice Stem Borer were higher.</p> Copyright (c) http://jhpttropika.fp.unila.ac.id/index.php/jhpttropika/article/view/590 EFEKTIVITAS MINYAK ATSIRI SELEDRI (Apium graveolens L.) TERHADAP REPELENSI Spodoptera frungiperda (Lepidoptera: Noctuidae) PADA PERTANAMAN JAGUNG DI LAMONGAN 2020-11-22T18:52:39+07:00 Trisnani Alif trisnanialif@gmail.com <p><strong><em>Efektivitas minyak atsiri seledri (Apium graveolens </em>L.)<em> terhadap repelensi Spodoptera frungiperda (Lepidopter: noctuidae) pada pertanaman jagung di Lamongan</em>. </strong>Minyak atsiri adalah salah satu bahan yang berfungsi sebagai senyawa repelen hama serangga. Salah satu tanaman yang memiliki kandungan minyak atsiri adalah seledri. Penelitian ini bertujuan untuk mengetahui &nbsp;efektivitas senyawa minyak atsiri seledri terhadap repelensi <em>Spodoptera frungiperda</em> pada tanaman jagung di Lamongan. Sampel minyak atsiri yang digunakan berasal dari 3 tempat yaitu Lamongan, Surabaya dan Malang, dengan konsentrasi 1000 ppm, 2000 ppm dan 3000 ppm. Rancangan percobaan yang digunakan ialah rancangan acak kelompok terdiri atas enam perlakuan dan diulang tiga kali. Metode penelitian yang digunakan ialah <em>filter paper method</em>. Hasil pengamatan menunjukkan bahwa perlakuan minyak atsiri yang berasal dari malang dengan konsentrasi 3000 ppm memiliki tingkat persentase paling tinggi mencapai 93,33% pada kelas 5.</p> Copyright (c) http://jhpttropika.fp.unila.ac.id/index.php/jhpttropika/article/view/588 Detection and Identification of Yellow Mosaic Stunt Disease on Petunia sp. Using Nested PCR Method 2020-11-07T21:09:28+07:00 Suryani Titi Astuti surya16633@gmail.com Sri Sulandari sulandari77@ugm.ac.id Sedyo Hartono sedyohartono@ugm.ac.id Susamto Somowiyarjo soesamto@ugm.ac.id <p>Yellow mosaic &nbsp;stunt &nbsp;disease &nbsp;&nbsp;was found &nbsp;at some nurseries of Petunia in Sleman, Yogyakarta, also in &nbsp;Muntilan, and Magelang Central Java. The disease is very important because could reduce the quality and quantity of&nbsp; Petunia seedlings. The causal agent of the disease &nbsp;may be carried over to imported seeds and necessary to identify as&nbsp; a basic&nbsp; for&nbsp; control the disease properly.This research was done by mechanical transmission on indicator plants. The observation of the causal agents was conducted using electron microscope with quick dipping method and the molecular detection was done using nested PCR with TobRT up1-TobRT do2 as the external primers and TobN up3-TobN do4 as the internal primers. Mechanical inoculation showed chlorosis symptoms that developed into local spot on <em>Chenopodium amaranticolor</em> as well as mosaic and vein banding on <em>Nicotiana benthamiana</em>. &nbsp;The observation using electron microscope showed rod-shaped virus particles sized approximately 300 nm and by PCR method &nbsp;produced around 568 bp and 400 bp DNA band. Based on the sequence analysis, the disease was caused by <em>Rehmania mosaic virus</em>. This type of Tobamovirus has 96% similarity with ReMV-Japan. ReMV, a plant pathogen which is a member of Tobamovirus that has never been reported in Indonesia.</p> <p><strong>Keywords:</strong> mosaic, nested PCR, petunia, <em>Rehmania mosaic virus</em>, Tobamovirus</p> Copyright (c) http://jhpttropika.fp.unila.ac.id/index.php/jhpttropika/article/view/587 PERBANYAKAN Spodoptera frugiperda J.E Smith (Lepidoptera : Noctuidae) PADA BERGAGAI JENIS PAKAN ALAMI 2020-11-02T04:07:02+07:00 Sempurna Ginting sempurna@unib.ac.id <p><em>Spodoptera frugiperda</em> merupakan hama invasif, dan penting pada tanaman jagung. Akibat serangan hama tersebut dapat menurunkan produksi jagung sehingga perlu dikendalikan, salah satu tehnik pengendalianya dengan menggunakan musuh alami, dimana perbanyakannya membutuhkan pakan. Penelitian ini bertujuan mengevaluasi pakan terbaik untuk perbanyakan <em>S. frugiperda</em>. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL), pakan yang digunakan di antaranya daun (jagung, sawi, kangkung, ubi jalar, tebu, dan kedelai). Hasil penelitian menunjukkan bahwa siklus hidup <em>S. frugiperda</em> pada keenam jenis pakan menunjukkan hasil yang berbeda nyata. Siklus hidup tersingkat pada daun jagung 40,92 hari, kemudian diikuti daun sawi 43,35 hari, daun kangkung 43,45 hari, daun ubi 44,73 hari dan terpanjang pada daun tebu 45,01 hari. Ukuran pupa <em>S. frugiperda</em> terpanjang pada daun sawi 12,86 mm, dan daun jagung 12,56 mm, kemudian daun kangkung 11,08 mm, daun ubi 10,83 mm, daun tebu 10,83 mm, dan daun kedelai 7,83 mm. Bobot pupa terberat yaitu, pada daun sawi 0,18 mg, kemudian daun jagung 0,16 mg, daun kangkung 0,16 mg, daun ubi 0,14 mg, daun tebu 0,6 mg, dan daun kedelai 0,4 mg. Kesimpulannya inang yang paling cocok untuk pertumbuhan dan perkembangan <em>S. frugiperda</em> adalah daun jagung kemudian diikuuti oleh daun sawi<em>.</em></p> Copyright (c) http://jhpttropika.fp.unila.ac.id/index.php/jhpttropika/article/view/586 Agronomic Characteristics and Field Resistance of Gogo Paddy Local varieties of Gorontalo against plant pests 2020-10-07T15:22:11+07:00 nanang Buri nanangburi@gmail.com <p>&nbsp;</p> <p>Gorontalo&nbsp;Province is an area that has a variety of local varieties of upland rice.&nbsp;The resistance of local upland rice varieties against plant pests has never been officially reported.&nbsp;Thus this research was carried out, this research was conducted from January to May 2018. The research was carried out in the rice fields of Bone&nbsp;Bolango&nbsp;District.&nbsp;The study used a randomized block design with 5 treatments of&nbsp;Gorontalo&nbsp;local rice&nbsp;genotives&nbsp;, namely&nbsp;Ponelo&nbsp;,&nbsp;Pulo&nbsp;,&nbsp;Ponda&nbsp;,&nbsp;Buruna&nbsp;Kuning&nbsp;and&nbsp;Paledaa&nbsp;varieties, each treatment was repeated for 3 replications.&nbsp;The results showed that the resistance level of each local variety was different.&nbsp;It is known that the&nbsp;Panelo&nbsp;variety has a higher resistance than the&nbsp;Pulo&nbsp;variety, the&nbsp;Ponda&nbsp;variety and the&nbsp;Paledaa&nbsp;variety.&nbsp;Meanwhile, the resistance of&nbsp;Buruna&nbsp;Kuning&nbsp;showed the lowest variety among the other varieties tested.</p> <p>Key words:&nbsp;Plant Pests&nbsp;, disease resistance, upland rice</p> Copyright (c)