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PENGARUH PH DAN WAKTU PENYIMPANAN TERHADAP PERTUMBUHAN Lasiodiplodia theobromae PENYEBAB KANKER BATANG TANAMAN KARET Febbiyanti, Tri Rappani; Widodo, Widodo; Wiyono, Suryo; Yahya, Sudirman
Jurnal Penelitian Karet JPK : Volume 37, Nomor 1, Tahun 2019
Publisher : Pusat Penelitian Karet - PT. Riset Perkebunan Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/ppk.jpk.v37i1.615

Abstract

Lasiodiplodia theobromae merupakan cendawan penyebab kanker batang pada tanaman karet (Hevea brasiliensis Muel Arg.), penyakit ini merupakan penyakit baru dan belum pernah dilaporkan sebelumnya di Indonesia.  Banyak cara yang dapat dilakukan untuk mengendalikan penyakit kanker batang. Strategi pengendalian yang terbaik adalah dengan pengelolaan penyakit yang membutuhkan pengetahuan mengenai ekobiologi patogen, inang, dan interaksinya dengan lingkungan biotik dan abiotik. Pengendalian patogen harus didasarkan pada pengetahuan tentang bioekologinya. Diharapkan dengan pengetahuan bioekologi bisa dijadikan dasar untuk bisa menghambat perkembangan atau menurunkan populasi inokulum di lapangan. Penelitian ini bertujuan untuk menentukan pengaruh pH secara in vitro terhadap pertumbuhan patogen kanker batang dan laju penurunan viabilitas tubuh buah akibat penyimpanan.  Kisaran pengaruh pH media meliputi 3, 4, 5, 6 dan 7. Penyimpanan tubuh buah dilakukan dalam wadah tanpa diberi tanah, diberi tanah steril dan tanah tidak steril. Penentuan viabilitas dilakukan pada 30, 60, 90 dan 120 hari masa penyimpanan. Semakin rendah pH menyebabkan pertumbuhan miselia terhambat.
TIGA SPESIES PERONOSCLEROSPORA PENYEBAB PENYAKIT BULAI JAGUNG DI INDONESIA Rustiani, Ummu S.; Sinaga, Meity S.; Hidayat, Sri Hendrastuti; Wiyono, Suryo
BERITA BIOLOGI Vol 14, No 1 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v14i1.1860

Abstract

Downy mildew is very detrimental disease of maize production in Indonesia. Adequate information regarding the identification key based on morphological and morphometric characteristic of the causal fungi of maize downy mildew in Indonesia is limited. Study for detection and identification of morphological, morphometric, and moleculer base is urgently required. Artificial sporulation induction method performed to obtain the morphology of the fungus as a whole.The fungi were morphologically identified as symptomatic maize downy mildew collected from 13 provinces in Indonesia.Three species, namely P. maydis, P.sorghi, and P. philippinensis were identified based on the shape,size, and conidial cell wall thickness, size and number of branching coniodiophores, and long sterigmata.Confirmation by PCR succesfully amplified target DNA of P. maydis, P. sorghi, and P. philippinensis. The identification key of third species of Peronosclerospora accurately to be used in identification of Peronosclerospora causes downy mildew of maize in Indonesia.This identification key is recommended as a method of identification of the causal downy mildew of maize in Indonesia.
ORGANIC FERTILIZER AMENDMENTS REDUCE DISEASE SEVERITY OF Phytophthora palmivora ROOT ROT OF DUKU (Lansium domesticum) SEEDLING Hayati, Islah; Wiyono, Suryo; Widodo, Widodo; Sobir, Sobir
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol. 19 No. 2 (2019): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/j.hptt.219143-148

Abstract

Phytophthora palmivora, is a deadly pathogen of duku, causing serious problem in the main production area, especially in Jambi Province, Indonesia. The pathogen can infect duku plant in all stage of growth including seedlings. Organic amended media might become a potential alternative option for this disease management. These studies were performed in soil media containing organic fertilizer of 0%, 10%, 20%, 30% (v/v), served as treatment, and subjected to completely randomized design with 5 replications. This research found that incorporating 20% of organic fertilizer into media was able to lower disease severity by 23%. The ability of organic fertilizer to increase media bacterial and maintain fungal density and increase chemicals of C-org, P, K, Ca, Mg and Zn played important roles in reducing disease development.
ANALYSIS OF CAUSATIVE FACTORS FOR CANKER DISEASE EPIDEMIC ON RUBBER PLANTS IN SOUTH SUMATRA Febbiyanti, Tri Rapani; Wiyono, Suryo; Yahya, Sudirman; Widodo, Widodo
JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA Vol 19, No 1 (2019): MARCH, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (73.629 KB) | DOI: 10.23960/j.hptt.11982-91

Abstract

Analysis of Causative Factors for Canker Disease Epidemic on Rubber Plants in South Sumatra.  Lasiodiplodia theobromae is the cause of stem canker in the rubber plant (Hevea brasiliensis), this is a new disease and has never been reported in Indonesia. Currently, data on environmental factors and cultivation techniques related to the development of stem canker are not available so research needs to be done on this subject. The objective of the study was to analyze environmental factors and cultivation techniques related to stem canker on rubber trees in southern Sumatra. The study was conducted by collecting data on environmental factors and cultivation techniques and then analyzed the association with stem canker. Field observation was carried out at 21 locations in PT. Perkebunan Nusantara VII Business Unit Padang Plawi Bengkulu,  Tulung Buyut Lampung, Musilandas Palembang and Experimental Garden of Sembawa Research Center, Indonesian Rubber Research Institute at Palembang to measure the severity and incidence of this disease. Besides that, the data of cultivation technique and the condition of the garden were taken from the officer at those locations. Soil sample from each location was taken in a composite way, then its physical and chemical components were analyzed. The analysis was conducted to find out the correlation between cultivation and disease severity using chi-square test.  The relationship between chemical and physical factors of the soil with the disease severity was analyzed using a multivariate test of principal component analysis/PCA. Regression analysis was conducted to show the possible relation to the incidence and severity of this disease.  The location, clones, weed control and the number of plants per hectare showed a correlation with the disease severity. There was a positive correlation between incidence and severity of the disease. The highest disease severity occurred at the Sembawa location on clone BPM 24, with the number of plant population per ha was ? 555 trees and weed control using herbicide. Content of soil nitrogen, dust, clay and water as well as cation exchange capacity (CEC)were suggested to significantly contribute to the severity of stem canker.
Seleksi dan Identifikasi Bakteri Antagonis sebagai Agens Pengendali Hayati Penyakit Hawar Pelepah Padi Rustam, Rustam; Giyanto, Giyanto; Wiyono, Suryo; Santosa, Dwi Andreas; Susanto, Slamet
Jurnal Penelitian Pertanian Tanaman Pangan Vol 30, No 3 (2011): Desember 2011
Publisher : Pusat Penelitian dan Pengembangan Tanaman Pangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (99.967 KB) | DOI: 10.21082/jpptp.v30n3.2011.p164-171

Abstract

Selection and identification of effective microbes are important steps to obtain biological control agents. The objective of this research was to screen potential bacteria as controlling agents for rice sheath blight disease. The research was conducted at plant bacteriological laboratory and green house of Plant Protection Division of Bogor Agricultural University, Bogor, from May 2010 to February 2011. The trial was arranged in a completely randomized design with bacterial isolates as treatment. The result showed that 30 out of 144 bacterial isolates indicated an antifungal activity to R. solani. In vivo test indicated that 3 of the 30 isolates which have antifungal activity were able significantly to suppress the rice sheath blight disease. Those isolates were marked as TT47, SS19 and BR2, with the ability to suppress rice sheath blight disease at rate of 79.6, 56.4, and 49.4%, disease index 1.7, 3.7, and 4.3, and the disease incidence 33.3%, 73.35, and 80%, respectively. Molecular characterization of partial sequence of 16S rRNA on SS19, TT47, and BR2 isolates showed that those bacteria are Serratia marcescens, Ralstonia pickettii, and Bacillus subtilis, respectively.
Potential Pseudomonas Isolated from Soybean Rhizosphere as Biocontrol against Soilborne Phytopathogenic Fungi ARI SUSILOWATI; ARIS TRI WAHYUDI; YULIN LESTARI; ANTONIUS SUWANTO; SURYO WIYONO
HAYATI Journal of Biosciences Vol. 18 No. 2 (2011): June 2011
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (105.133 KB) | DOI: 10.4308/hjb.18.2.51

Abstract

Plants are liable to be attacked by soilborne fungal pathogens which are responsible to reduce plant growth and losses in yield. In Indonesia, indigenous soybeans’ rhizobacteria such as antifungal producing Pseudomonas sp. have not many been reported yet. Therefore, the potential of the Pseudomonas sp. as biocontrol agent should be deeply explored. The aim of this study was to screen the indigenous soybeans’ rhizobacteria Pseudomonas sp. that possessing biocontrol characters against soilborne mainly i.e. Sclerotium rolfsii, Fusarium oxysporum, and Rhizoctonia solani, in vitro and in planta. Eleven isolates identified Pseudomonas sp. CRB numbered by CRB-3, CRB-16, CRB-17, CRB-31, CRB-44, CRB-75, CRB-80, CRB-86, CRB-102, CRB-109, and CRB-112 were affirmed to be candidates of biocontrol agents toward the soilborne fungal pathogens. Pseudomonas sp. CRB inhibited growth of the pathogenic fungi approximately 11.1-60.0% in vitro. Among of them, 7 isolates were also produced siderophore, 2 isolates produced chitinase, and 4 isolates produced hydrogen cyanide. Seed coating with the Pseudomonas sp. CRB accomplished disease suppression in planta about 14.3-100% in sterile soil condition and 5.2-52.6% in non sterile soil condition. Consistency in high performance more than 30% of disease suppression in non sterile soil condition suggested that 5 isolates i.e. CRB-16, CRB-44, CRB-86, CRB-102, and CRB-109 isolates have great promising to be developed as biocontrol agents of soilborne pathogenic fungi.
Biological control of bacterial wilt pathogen (Ralstonia solanacearum) of tomato using endophytic bacteria is one of the alternative control methods to support sustainable agriculture. This study was conducted to select and characterize endophytic bacteria isolated from healthy tomato stems and to test their ability to promote plant growth and suppress bacterial wilt disease. Among 49 isolates successfully isolated, 41 were non-plant pathogenic. Green house test on six selected isolates based on ABDJAD ASIH NAWANGSIH; IKA DAMAYANTI; SURYO WIYONO; JUANG GEMA KARTIKA
HAYATI Journal of Biosciences Vol. 18 No. 2 (2011): June 2011
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.18.2.66

Abstract

Biological control of bacterial wilt pathogen (Ralstonia solanacearum) of tomato using endophytic bacteria is one of the alternative control methods to support sustainable agriculture. This study was conducted to select and characterize endophytic bacteria isolated from healthy tomato stems and to test their ability to promote plant growth and suppress bacterial wilt disease. Among 49 isolates successfully isolated, 41 were non-plant pathogenic. Green house test on six selected isolates based on antagonistic effect on R. solanacearum or ability to suppress R. solanacearum population in dual culture assays obtained BC4 and BL10 isolates as promising biocontrol agents.  At six weeks after transplanting, plants treated with BC4 isolate showed significantly lower disease incidence (33%) than that of control (83%). Plants height was not significantly affected by endophytic bacterial treatments. Based on 16S rRNA sequence, BC4 isolate had 97% similarity with Staphylococcus epidermidis (accession number EU834240.1), while isolate BL10 had 98% similarity with Bacillus amyloliquefaciens strain JK-SD002 (accession number AB547229.1).
Biocontrol Activity, Mode of Action, and Colonization of Aureobasidium pullulans Dmg 30 DEP on Controlling Early Blight Disease on Tomato Plant Wawan Setiawan; Suryo Wiyono; Toga Pangihotan Napitupulu; Atit Kanti; Idris Idris; Masrukhin Masrukhin; Efi Toding Tondok; I Nyoman Sumerta; I Made Sudiana
HAYATI Journal of Biosciences Vol. 29 No. 3 (2022): May 2022
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.29.3.320-329

Abstract

We investigated the biocontrol activity of A. pullulans Dmg 30 DEP against Alternaria solani causal agent of early blight. Biocontrol activity was tested by the in vivo and ad planta. Biocontrol activity were tested by investigating the antibiosis capabilities with dual culture method, paper dish assay, two-compartment petri dish assay, and trapping and identification of volatile organic compounds (VOCs) with GC-MS. Lysis activity was examined by observing the clear zone formed by growing yeast on chitin agar and skim milk agar. The ability of hyperparasitism was assessed by the agar block method, and observed by light microscopy and scanning electron microscopy (SEM). The results showed that A. pullulans Dmg 30 DEP plays a role in the suppression of early blight disease at 106 cells/ml and 107 cells/ml yeast cell density. The mechanism involved in biocontrol activity is the production of VOCs, the production of chitinase and protease enzymes, the production of siderophore and hyperparasitism. The result shows that A. pullulans Dmg 30 DEP was colonizing the tomato leaves following the areole.
Penambahan Berbagai Jenis Pupuk Organik dan Pupuk Hayati terhadap Produktivitas dan Mutu Benih Kedelai (Glycine max.L.) . Rifka; Memen Surahman; Suryo Wiyono
Buletin Agrohorti Vol. 7 No. 3 (2019): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.504 KB) | DOI: 10.29244/agrob.v7i3.30474

Abstract

Penelitian ini bertujuan mendapatkan jenis pupuk organik untuk meningkatkan produktivitas dan mutubenih tanaman kedelai (Glycine max L.). Penelitian dilaksanakan di Kebun Percobaan Leuwikopo, InstitutPertanian Bogor, Dramaga, Bogor pada bulan Desember 2017-April 2018. Jenis tanah Kebun PercobaanLeuwikopo yaitu latosol. Rancangan perlakuan yang digunakan adalah faktorial satu faktor dalam rancanganlingkungan kelompok lengkap teracak dengan empat ulangan. Faktor yang diamati adalah jenis pupuk yangterdiri atas enam taraf yaitu perlakuan P0 (tanpa pupuk anorganik dan pupuk organik), P1 (Pupukanorganik), P2 (Abu sekam bakar), P3 (Bio organik), P4 (Pupuk organik cair) dan P5 (Plant growthPromoting Rhizobacteria (PGPR)). Pengujian mutu benih hasil produksi dilaksanakan di LaboratoriumPengujian dan Penyimpanan Benih pada bulan April 2018. Pengujian tersebut terdiri atas pengujian dayaberkecambah, indeks vigor benih, potensi tumbuh maksimum, berat kering kecambah normal dan bobot 100butir benih. Hasil penelitian menunjukan bahwa perlakuan pupuk organik tidak berpengaruh terhadapkomponen pertumbuhan vegetatif seperti tinggi tanaman, jumlah cabang per tanaman, dan jumlah daunterkecuali daya tumbuh dan jumlah bintil akar. Perlakuan pupuk memberikan pengaruh nyata terhadapproduksi kedelai dan bobot 100 butir benih tetapi tidak berpengaruh nyata terhadap jumlah polong pertanaman, jumlah polong isi, bobot polong isi, bobot biji tanpa polong, jumlah butir per tanaman, jumlahcabang produktif, dan bobot akar. Perlakuan pupuk tidak memberikan pengaruh nyata pada komponenpengujian mutu benih yakni variabel daya berkecambah, indeks vigor, potensi tumbuh maksimum dan bobotkering kecambah normal. Penambahan pupuk organik yang menghasilkan produksi terbaik yaitu perlakuanPGPR dengan dosis 10 g kg-1 benih. Semua perlakuan pupuk organik tidak berpengaruh terhadap mutufisiologis benih.
Formulasi Tepung Biofungisida Berbahan Aktif Ganda Pseudomonas Fluorescens PG 01 dan Bacillus Polymixa BG 25 . Widodo; Suryo Wiyono
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (761.256 KB)

Abstract

The objective of this study is to determine effective carrier materials and additives which is able to keep the bioperformance, including antibiosis activity to Phytophthora capsici and Colletotrichum acutatum and plant growth promoting effect, of two antagonistic bacteria Psedomonas fluorescens PG 01 and Bacillus polymixa BG 25 in biofungicide powder formulations. Talc and bentonite formulations were effective after 3 months of storage, while tapioca were only effective to B. polymixa up to 3 months of storage. Additive materials that can enhance the antibiosis activity of the bacteria, keeping up the growth and no toxicity effect to chili seedlings were crab shell powder 0.25% and MnSO4 1 to 2%. After eight months storage with 20% moisture content, the bacteria population survived in powder formulation developed in this study was still suitable for seed treatment and/or after transplanting through soil drenching with water. In this period of storage, population of the two bacteria was 106 cfu/g formulation.
Co-Authors . Haryanto . Rifka . Widodo . Widodo . Widodo Abdjad Asih Nawangsih ABDUL MUNIF Abdul Munif Adi Setyo Purnomo Agus Purwito Ahmad Fauzi Ridwan AHMAD JUNAEDI Ahmad Junaedy Ahmad Sutopo ALI NURMANSYAH Ali Wafa Aloysius Rusae Amrullah, Rizki Abi Anas Dinurrohman Susila Andika Septiana Suryaningsih Andriani, Desta Angelica Nabilla Ahdy Anisa Nurkasanah Anjar Kartika Antonius Suwanto ARI SUSILOWATI Arif Ravi Wibowo Aris Tri Wahyudi Asniah Asniah Astuti Kurnianingsih, Astuti Atit Kanti Atit Kanti Awang Maharijaya Ayu Rahayu Baskoro Sugeng Wibowo Bayu Aji Krisandi Bonjok Istiaji Burhanudin Burhanudin Cahyani, Gesa Nur DADANG DADANG DAMAYANTI BUCHORI Daniel Happy Putra Darni Rambu D. Siala Dedi Fardiaz Dewa Gede Wiryangga Selangga Dewa Gede Wiryangga Selangga DEWI SARTIAMI Dewi Sukma Dhany Nukhaizal Azkiya DWI ANDREAS SANTOSA Dwi Astuti DWI SUGIPRIHATINI Dyah Harianti Purnomo Efi Toding Tondok Eka Maulidiya, Sherly Eka Wijayanti Elis Nina Herliyana ENDANG MURNIATI Eryna Elfasari Rangkuti Evan P. Ramdan Fadillah, Arvin Muhammad Fakhrusy Zakariyya Fany Juliarti Panjaitan Fariyanti, Anna Fatah, Fadillah Abdul Fazad, M. Haikhal Febbiyanti, Tri Rapani Firman Hidayat Fitri Kemala Sandra Fitriansyah, Muhammad Ramdhani Giyanto Giyanto Giyanto Giyanto Giyanto Giyanto, Giyanto Halimah, Adedila Hanif, Andini HAPPY WIDIASTUTI Hari Priwiratama Harti, Heri Hendrastuti Hidayat, Sri Hendro Nurhadi Heny Setiyowati Heri Harti Hermanu Triwidodo Hidayah, Zahra Nurul Hidayat , Sri Hendrastuti I MADE ARTIKA I Made Sudiana I Made Sudiana I Nyoman Sumerta Idris Idris IKA DAMAYANTI Iman, Muhammad Ilham Nur Imaniasita, Vidya Indrapaksi, Tengku Ikhwan Alfajri Iskandar Z. Siregar Islah Hayati Ita Aprilia Ivone Oley Sumarauw Joni Hidayat, Joni Juang Gema Kartika Kartini Budiastuti Ketty Suketi Khairani Khairani Khairina, Winda Hidayatul Khamidi, Thamrin Khoirotul Afifah Kikin H Mutaqin Kristianto Nugroho Kristianto Nugroho Kudang Boro Seminar Kusuma Darma Kusuma Darma Kusumah, Yayi Munara Lestari, Mutiara Dwi Lilik Retnowati Lina Herlina Lina Herlina Listihani, Listihani M. Miftahudin Masrukhin Masrukhin Mei Lita Fitriani Meity S Sinaga Meity S. Sinaga Meity S. Sinaga MEITY S. SINAGA, MEITY S. Meity Suradji Sinaga Meity Suradji Sinaga Meity Suradji Sinaga Meity Suradji Sinaga Meity Suradji Sinaga Memen Surahman Mohamad Rahmad Suhartanto Mufidah, Iftin Farekana Muhammad Arief Munady Muhammad Lukman Hakim, Muhammad Lukman Muhammad Miftahudin Nanta, Wahyu Ridwan Napiudin Nazly Aswani Neo Endra Lelana nFN Khaerati Nika Ropiatningsuari Nur Alfi Saryanah Nur Khoiriyah Nurmala, Ayu Aulya Nurul Khumaida Octaviani, Wulan Nur Parida, Ida Phor Bho Ayuwati Pratama, Silvia Abdi Pratiwi, Astika Widhi Pratiwi, Tasya Resa Priyo Cahyono Puji Lestari Purnomo, Dyah Hariyanti Purwono Purwono, Purwono Puspitaningtyas, Khasanah Putri, Lystiana Dewi Putro, Herdayanto Sulistyo RAHAYU WIDYASTUTI Ramdan, Evan Purnama Reflinur Reflinur Reflinur Reflinur Remaja Sitepu Rerenstradika T. Terryana Riana Jumawati Rika Estria Gurusinga Rina Mardiana Rizki Abi Amrullah Roedhy Poerwanto Rohmah, Alya Awinatul Roza Yunita Rustam, Rustam Rustiani, Ummu S. Said Abdullah Saiful Akhyar Lubis Saputra, Bubun Afif Hidayat Aziz Sari Nurulita Sarwititi Sarwoprasodjo Satya Nugroho Sherly Eka Maulidiya Silviana Arsyad Sima Elpani Siregar, Amelia Nani Sitti Eha Faihah Sitti Fadhilah Slamet Susanto Sobir Sobir SRI FATMAWATI Sri Hartati Sri Hartati Sri Hartati SRI HENDRASTUTI HIDAYAT Sri Wening Stephanie Stephanie Sudarsono Sudirman Yahya Sudirman Yahya Sudirman Yahya Sudradjat Suhadi, Octen Sukmana, Andra Sahab Surya Rosa Putra, Surya Rosa Suryahadi Suryahadi Susanna Susanna SUSILOWATI1 SUSILOWATI1 Suwarno . Swastiko Priyambodo, Swastiko Tamrin Khamidi Tamrin Khamidi Tamrin Khamidi Tamrin Khamidi Teguh Iman Santoso Teguh Iman Santoso Titiek Siti Yuliani Toding Tondok, Efi Toga Pangihotan Napitupulu TRI ASMIRA DAMAYANTI Tri Rapani Febbiyanti Tri Rapani Febbiyanti, Tri Rapani Trikoesoemaningtyas Ummu S. Rustiani Ummu Salamah Rustiani Utami, Aditya Dyah UTUT WIDYASTUTI Vinsen Willi Wardhana Wahyu, Bonny Poernomo Wartono Wartono Wati, Cheppy Wawan Setiawan Weni Wilia Widhayanti, Nur Ari Widodo Widodo Widodo Widodo Widodo Widodo Widodo Widodo Widodo Widya Sari Winarso D. Widodo Winda Ika Susanti Windah Meilanda Zulmi Yayu Siti Nurhasanah Yohana C Sulistyaningsih Yohana C Sulistyaningsih Yuli Fitriati Yuliawati YULIN LESTARI Yundari, Yundari Yuyun Andriyani