Lestari Wibowo, Lestari
university of lampung

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INCIDENCE DYNAMIC OF POD ROT DISEASE OF COCOA CLONES IN LAMPUNG, INDONESIA Evizal, Rusdi; ,, Sugiatno; ,, Ivayani; Pujisiswanto, Hidayat; Wibowo, Lestari; Erry Prasmatiwi, Fembriarti
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 18, No 2 (2018): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.117 KB) | DOI: 10.23960/j.hptt.218%p

Abstract

Incidence dynamic of pod rot disease of cocoa clones in Lampung, Indonesia. The declining of production and productivity of cocoa in Indonesia might due to pests and diseases attacks and planting unselected clones. Dynamic of pod rot incidence was important to plan pest controlling. To study dynamic incidence of some cocoa clones, a research was conducting in Pesawaran District, a centre of cocoa production in Lampung. A farmer cocoa plot under agro-forestry system was selected which had been upgrading in 2014 by pruning and side-grafting with national clones including Sul 1, MCC 1, MCC 2, ICCRI 7 and selected local clone named T1, T2, and T3. The results showed that pod rot incidence occurred along the year of observation. For immature pod, pod rot incidence was dynamic and varied among months and clones. There was high pod rot incidence every months for particular clone. National clone Sul1 and local clone T3 exhibited more tolerant to pod rot disease than other clones. Clones Sul1 and T3 also produced more pod than others. High incidence of pod rot occurred on fruit stage of cherelle (incidence 38.7%) and small pod (incidence 18.8%) that well known as cherelle wilt symptom.
Pengaruh Sifat Fisik Tanah terhadap Hama Simphylid Pada tanaman Nanas (Ananas comosus (L.) Merr) di PT. Great Giant Pineapple Terbanggi Besar Lampung Tengah Aji, Sandi; Afandi, Afandi; Wibowo, Lestari; Manik, K.E.S.
Jurnal Penelitian Pertanian Terapan Vol 15, No 3 (2015)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (77.046 KB) | DOI: 10.25181/jppt.v15i3.134

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This research was conducted in the planting area of pineapple (Ananas comosus) PT. GGP Terbanggi Besar Central Lampung indicated attacked by pests simphylid in March 2014 until May 2014. Analysis of soil physical properties carried out in the Laboratory of Soil Science, Department of Agrotechnology, Faculty of Agriculture, University of Lampung. The method used in this study is a survey method. Soil sampling conducted at three locations indicated simphylid pests. Soil sampling done at some point and some depth. Results from this research that pest symphilid most numerous in one location with a number of acquisition 172 tail where the location of the physical properties of good land which the density value of the content is low, the total pore low, macropores and high hardness low ground , allowing sinphylid be able to live and thrive. While at the location of two and three with the condition density value of the content is high, the total pore high, macropores low, and violence high soil pests simphylid not so much discovered as simphylid can not multiply and survive on the physical condition of poor soil Keywords: Pineapple, Symphilid, and physical properties of soil
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

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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.
APLIKASI SISTEM PAKAR IDENTIFIKASI HAMA DAN PENYAKIT SERTA CARA PENGENDALIANNYA PADA TANAMAN KAKAO BERBASIS ANDROID Aptriani, Rizki; kurniawan, didik; Wibowo, Lestari
Jurnal Komputasi Vol 5, No 1 (2017)
Publisher : Jurnal Komputasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (599.988 KB)

Abstract

Cocoa (Theobroma cacao L) is one of the plantation commodities that get serious attention because its role is quite high in the national economy. Lampung Province is one of the central cocoa plantations in Indonesia. Cacao cultivation is widely inseparable from a variety of obstacles such as pests and plant diseases. Identification of pests and diseases with various symptoms found in cocoa plants and knowing how to control it is difficult for us, especially farmers in the areas to solve the problem quickly and accurately. Limitations of an expert make handling of pests and diseases of cocoa plants to be difficult, therefore required an expert system that is able to identify pests and diseases in cocoa plants and how to control it based on the knowledge provided by an expert who is able to identify pests and diseases of cocoa and how to control it . This research applied the calculation method of Theorem bayes to calculate the percentage of value. The calculation result is a percentage value and the user can directly see the way pest and disease control are identified. Testing of this research using method Black Box Equivalence Partitioning (EP). Testing questionnaires are divided into 2 variables: user friendly variable and interactive variable. Tests of user friendly variables obtained an average rating of 87.6% and interactive test variables obtained an average rating of 87.52%. With the test results the system shows this app is feasible to use.
DAMPAK APLIKASI INSEKTISIDA PERMETRIN TERHADAP HAMA PENGISAP BIJAIJ HELOPELTIS SPP. (HEMIPTERA: MIRIDAE) DAN ARTROPODA NON-TARGET PADA PERTANAMAN KAKAO (THEOBROMA CACAO L.) Hasibuan, Rosma; Swibawa, I Gede; Wibowo, Lestari; Pramono, Sudi; Hariri, Agus M
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 4, No 1 (2004): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1064.608 KB) | DOI: 10.23960/j.hptt.148-12

Abstract

Impact of Permethrin-Insecticide Application on Mirid Pest of Cocoa Helopeltis spp. (Hemiptera: Miridae) and on Non-target  Arthropods in Cocoa Plantations (Theobroma cacao L.). Cocoa mirid bugs, Helopeltis spp., (Hemiptera: Miridae) are the most important pest of cocoa in Indonesia. A field study was conducted to investigate the effect of permethrin on cocoa mirids and non-target arthropods at a cocoa plantation in specific place. A randomized complete block design was used in which each of four blocks consisted of 5 treatments (4 concentrations of permethrin; 50; 100; 200; and 250 ppm and control). The results indicated that the application of permethrin significantly increased the cocoa mirids mortaliiy throughout all sprayed cocoa trees (up to 100% 72 h after application). Even at 1 h after application, the percentage of Cocoa mirids mortality 29.2% - 53.9%) on cocoa trees sprayed with permethrin at concentrations of 50 - 250 ppm was significantly higher than that on control plant (3.6%). At 72 h after treatments, application of permethrin at concentrations of 200 and 250 ppm caused a complete kill (mortalty of 100%) in the test mirids. Meanwhile, ground cloths caught at least 22 fanilies of abore-ground arthropods that were found killed by permethrin applications. Moreover, the number of non-target arthropods killed by permethrin at concentrations of 100 - 250 ppm (27.3 - 85.3 individuals/ground cloth) were signifcantly higher than that on control trees. These results demonstrated that despite high efficacy of permethrin in controlling of cocoa mirids (Hetopeltis spp.), its application also had adverse effects on non-target arthropods incocoa plantations.
KEMELIMPAHAN DAN KERAGAMAN JENIS PARASITOID HAMA PENGGULUNG DAUN PISANG ERIONOTA THRAX L. DI KABUPATEN LAMPUNG SELATAN Wibowo, Lestari; ., Indriyati; ., Purnomo
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 15, No 1 (2015): MARET, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.178 KB) | DOI: 10.23960/j.hptt.11526-32

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The abundance and diversity of the parasitoid of banana leaf skipper pest (Erionota thrax L.) in South Lampung Regency. This research was conducted to determine the abundance, diversity, and parasitation ability of several parasitoids of the banana skipper or banana leafroller (Erionota thrax) in South Lampung Regency. This research was carried out with a survey method by taking out samples of larvae and pupae of E. thrax in the District of Natar, Jati Agung, and Tanjung Bintang, South Lampung. Results of the survey showed that there were 8 types of parasitoids recovered from larvae or pupae of E. thrax, i.e. Brachymeria lasus (Chalcididae: Hymenoptera), B. thracis (Chalcididae: Hymenoptera), Charops sp. (Ichneumonidae: Hymenoptera), Casinaria sp. (Ichneumonidae: Hymenoptera), Xanthopimpla sp. (Ichneumonidae: Hymenoptera), Cotesia erionotae (Braconidae: Hymenoptera), and two parasitoids Diptera (Tachinidae and Sarcophagidae). The highest abundance of parasitoid was found in Tanjung Bintang with 171 parasitoids (index of diversity (H’) = 1.0256 and index of evenness (E) = 0.5724). In Natar District, the abundance of parasitoid was 63 parasitoids, but it had a greater H’ value (1.4396) and E-value (0.7398). Meanwhile, in Jati Agung District, the abundance of parasitoid was 56 individuals but the value of H’ was also high, which was 1.012 with the value of E of 0.6064. The percentages of parasitation to the larvae and pupae E. thrax were 55.01% (Tanjung Bintang District), 31.68% (Natar District) and 33.34% (Jati Agung District).
PENAMBAHAN BEBERAPA JENIS BAHAN NUTRISI PADA MEDIA PERBANYAKAN UNTUK MENINGKATKAN VIRULENSI BEAUVERIA BASSIANA TERHADAP HAMA WALANG SANGIT Nuryanti, Ni Siluh Putu; Wibowo, Lestari; Azis, Abdul
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 12, No 1 (2012): Maret, Jurnal Hama dan Penyakit Tumbuhan Tropika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (98.238 KB) | DOI: 10.23960/j.hptt.11264-70

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 A research was conducted to increase the virulence of Beauvaria bassiana to the rice bug, L.  acuta, by adding four different substances (materials) to the rice media to grow the fungus. The research was conducted from April to August 2011 at Polinela Laboratory, Bandar Lampung.  To do this a set of experimental unit consisting of five treatments and five replications were arranged in completely randomized design. The  four treatments were media made up of rice (rice based media) each given or added with four different materials such as rice skin powder, corn sugar, grasshopper powder and chitosan powder. The result showed that B. bassiana grown on rice media added with grasshopper powder or rice skin powder were able of causing mortality to the L. acuta as high as 78% and 71%, respectively, meaning that both mortalities were much higher than that of other replication. The virulence values of Beauveria bassiana  grown on those both powder were also higher than that of three others.
PENGARUH APLIKASI BEBERAPA TARAF KONSENTRASI FORMULASI KERING Metarhizium anisopliae (Metchnikoff) Sorokin ISOLAT YOGYAKARTA TERHADAP MORTALITAS KEPIK PENGISAP BUAH KAKAO (Helopeltis spp.) DI LABORATORIUM Erdiyanto, Erwan; Purnomo, Purnomo; Wibowo, Lestari; Yasin, Nur
Jurnal Agrotek Tropika Vol 1, No 3 (2013)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (84.388 KB) | DOI: 10.23960/jat.v1i3.2054

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Hama pengisap buah kakao (Helopeltis spp.) merupakan hama penting yang menyerang tanaman kakao. Pengendalian hama menggunakan insektisida selama ini masih kurang memuaskan. Selain itu, petani dalam menggunakan insektisida pada umumnya melebihi dosis anjuran. Penggunaan pestisida yang tidak tepat ini dapat mengganggu ekosistem, keseimbangan populasi musuh alami, menyebabkankan resurjensi atau ledakan hama serta resistensi hama. Untuk itu diperlukan pengendalian yang aman dan ramah lingkungan. Salah satu alternatif yang mencakup kedua hal ini yaitu penggunaan agensia pengendali hayati, seperti jamur entomopatogen, yang masih perlu untuk diteliti. Tujuan penelitian ini adalah untuk mengetahui pengaruh beberapa taraf konsentrasi formulasi keringMetarhizium anisopliaeisolat Yogyakarta terhadap mortalitas hama kepik penghisap buah kakao (Helopeltisspp.). Percobaan disusun dalam Rancangan Acak Kelompok yang terdiri atas 5 perlakuan. Pengelompokan berdasarkan 3 waktu aplikasi yang berbeda. Setiap unit percobaan terdiri atas 20 ekor imago Helopeltis spp. Perlakuan terdiri atas kontrol (P0), aplikasi formulasi kering M. anisopliae dengan konsentrasi 5 g l-1 air (P1), aplikasi formulasi kering M. anisopliae dengan konsentrasi 10 g l-1 air (P2), aplikasi formulasi kering M. anisopliae dengan konsentrasi 15 g l-1 air (P3), dan aplikasi formulasi kering M. anisopliae dengan konsentrasi konsentrasi 20 g l-1 air (P4). Data yang didapatkan dianalisis ragamnya dan dilanjutkan dengan Uji BNT dengan taraf nyata 1 atau 5%. Hasil penelitian menunjukkan bahwa aplikasi formulasi kering M. anisopliae isolat Yogyakarta menyebabkan mortalitas pada Helopeltis spp. Mortalitas Helopeltis spp. tertinggi pada 10 hsa terjadi pada perlakuan aplikasi formulasi kering M. anisopliae dengan konsentrasi 15 g l-1 air sebesar 88,24 %, dengan periode letal 4,21 hari yang tidak berbeda nyata dengan konsentrasi 20 g l-1 air.
PENGARUH JENIS FORMULASI JAMUR ENTOMOPATOGEN Beauveria bassiana TERHADAP PERTUMBUHAN SPORA DAN KEMATIAN KUTUDAUN KEDELAI (Aphis glycines Matsumura) Pertiwi, Sasha Putri; Hasibuan, Rosma; Wibowo, Lestari
Jurnal Agrotek Tropika Vol 4, No 1 (2016)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (127.388 KB) | DOI: 10.23960/jat.v4i1.1901

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Kutudaun kedelai Aphis glycines (Hemiptera: Aphididae) merupakan hama yang selalu ada di pertanaman kedelai dan menimbulkan kerugian yang sangat berarti bagi petani. Jamur Beauveria bassiana merupakan agensia hayati yang memiliki berbagai kelebihan diantaranya mempunyai kapasitas reproduksi yang tinggi, dapat membentuk spora yang tahan lama di alam, ramah lingkungan, serta memiliki patogenesis yang tinggi terhadap hama sasaran. Penelitian ini bertujuan untuk mengetahui pengaruh jenis formulasi jamur entomopatogen Beauveria bassiana terhadap pertumbuhan spora dan kematian kutudaun kedelai (Aphis glycinesMatsumura). Penelitian ini dilakukan di laboratorium yang terdiri atas 3 percobaan: kerapatan konidia, viabilitas spora dan patogenesitas kutudaun. Jenis perlakuan adalah formulasi cair (F0), formulasi kering (F1), Formulasi pasta-1 dan formulasi pasta-2. Penelitian ini disusun menggunakan Rancangan Acak Lengkap (RAL) dan masing- masing perlakuan diulang empat kali. Data yang didapat dianalisis ragam dan dan dilanjutkan dengan uji BNT dengan taraf nyata 5%. Kesimpulan dari penelitian ini adalah Kerapatan konidia B.bassiana berbeda nyata antar formulasi yang diuji. Kerapatan konidia B.bassiana formulasi cair (F0) lebih tinggi dibandingkan formulasi pasta2 (F3) dan formulasi pasta1 (F2). Namun, formulasi cair (F0) tersebut tidak berbeda nyata dengan formulasi kering (F1). Viabilitas konidia B.bassiana berbeda nyata antar formulasi yang diuji. Viabilitas konidia B. bassiana formulasi kering (F1) lebih tinggi dibandingkan formulasi pasta1 (F2), formulasi cair (F0) dan formulasi pasta2 (F3). AplikasiB.bassiana beberapa dari formulasi kering (F1) menyebabkan mortalitas kutudaun tertinggi (92 %) dibandingkan formulasi cair (F0), formulasi pasta1 (F2) dan formulasi pasta2 (F3).
KAJIAN JENIS DAN POPULASI TIKUS DI PERKEBUNAN NANAS PT GREAT GIANT FOOD TERBANGGI BESAR, LAMPUNG TENGAH Husein, Ahmad Aziz Alfi; Solikhin, Solikhin; Wibowo, Lestari
Jurnal Agrotek Tropika Vol 5, No 2 (2017)
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (336.375 KB) | DOI: 10.23960/jat.v5i2.1832

Abstract

Kajian jenis dan populasi tikus merupakan tahapan dasar yang sangat penting sebelum dilakukannya manajemen pengendalian hama. Informasi yang diperoleh dapat menjadi dasar pertimbangan dalam menentukan strategi pengendalian tikus yang efektif. Penelitian ini dilakukan untuk mempelajari jenis dan populasi tikus, serta intensitas serangan tikus di perkebunan nanas PT Great Giant Food (GGF). Penelitian dilakukan di perkebunan nanas PT GGF Terbanggi Besar, Lampung Tengah pada bulan Juni sampai dengan Agustus 2016. Penelitian ini menggunakan teknik survei purposive sampling dengan empat blok kebun yang dipilih sebagai sampel yaitu blok kebun yang berbatasan dengan perkebunan tebu PT GMP, berdekatan dengan gedung dan kantor, berdekatan dengan desa, dan blok kebun yang jauh dari perbatasan maupun gedung. Penelitian dilakukan menggunakan metode perangkap (trapping), berbentuk persegi panjang dengan ukuran p x l x t = 30 cm x 20 cm x 15 cm. Jumlah tikus terperangkap dan intensitas serangan dianalisis nilai tengah standar errornya. Populasi relatif dihitung dari presentase setiap jenis di tiap blok, sedangkan nisbah kelamin dihitung dengan membandingkan jumlah jantan/betina. Hasil penelitian menunjukkan bahwa terdapat dua jenis tikus yaitu Rattus argentiventer dan Rattus exulans. Populasi relatif tikusspesies Rattus argentiventer yaitu 66,7% sedangkan spesies Rattus exulans yaitu 33,3%. Intensitas serangan tikus tertinggi terdapat pada blok kebun yang berbatasan dengan perkebunan tebu PT GMP 0,68% dan intensitas serangan tikus terendah pada blok kebun yang jauh dari perbatasan dan bangunan 0,22%.