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Journal : Jurnal Hortikultura Indonesia

Pertumbuhan dan Kadar Alkaloid Tanaman Leunca (Solanum americanum Miller) pada Beberapa Dosis Nitrogen Marchella Putriantari; Edi Santosa
Jurnal Hortikultura Indonesia Vol. 5 No. 3 (2014): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (247.496 KB) | DOI: 10.29244/jhi.5.3.175-182

Abstract

ABSTRACTLeunca fruit is indigenous vegetable and widely used as vegetables mainly in West Java. In order to improve productivity and quality, several levels of nitrogen was used.  The objective of the experiment  was  to determine  the effect  of  nitrogen  level  on  growth  and  productivity, and on  the alkaloid levels. The experiment was conducted at Leuwikopo Experimental Station IPB in December 2013  -  April 2014. Experiment was arranged in a  Randomized Complete Block Design with single factor and four replications. Nitrogen fertilizer consisted  of four levels, i.e., 0  kg N ha-1, 60 kg  N ha-1,  120  kg  N ha-1,  and  180  kg  N  ha-1. The  results  showed  that  growth  and productivity were affected  by nitrogen  application. The highest  productivity of Leunca  was  obtained  by  nitrogen fertilizer at rate of 180  N ha-1, and the highest alkaloid content was produced by plant treated with 60 kg N ha-1. The highest productivity of fruits was 18 445 kg ha-1.Key words: alkaloid, indigenous vegetable, productivity, Solanum nigrum, nitrogen dosage ABSTRAKBuah  leunca  merupakan  sayuran  indigenous  terutama  bagi  masyarakat Jawa  Barat.  Dalam rangka  meningkatkan  produktivitas  dan  kualitas  buah leunca,  perlu  dilakukan  kajian  budidaya khususnya  pemupukan.  Penelitian ini bertujuan  menentukan  dosis  pupuk  nitrogen  terbaik  untuk meningkatkan pertumbuhan  dan  produktivitas  tanaman  leunca,  serta  mengkaji  pengaruh pupuk nitrogen terhadap kadar alkaloid tanaman leunca. Percobaan ini dilaksanakan di Kebun Percobaan Leuwikopo IPB pada bulan Desember 2013  - April 2014. Percobaan ini menggunakan Rancangan Kelompok Lengkap Teracak satu faktor dengan empat ulangan. Faktor dosis pupuk nitrogen terdiri atas empat  taraf,  yaitu  tanpa  pupuk  N,  60  kg  N  ha-1,  120  kg  N  ha-1,  dan 180  kg  N  ha-1.  Hasil penelitian  menunjukkan  bahwa  pertumbuhan  dan produktivitas  tanaman  terbaik  dihasilkan  oleh perlakuan  dosis  pupuk nitrogen  180  kg  N  ha-1.  Kadar  alkaloid  tertinggi  dihasilkan  tanaman dari perlakuan dosis pupuk nitrogen 60 kg N ha-1. Produktivitas buah leunca mencapai 18 445 kg ha-1.Kata kunci: alkaloid, produkvitas, sayuran indigenous, Solanum nigrum, dosis nitrogen
The Use of Clay as Potassium Permanganate Carrier to Delay the Ripening of Raja Bulu Banana Edi Santosa; Winarso D. Widodo; , Kholidi
Jurnal Hortikultura Indonesia Vol. 1 No. 2 (2010): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1412.931 KB) | DOI: 10.29244/jhi.1.2.88-95

Abstract

ABSTRACTThe objective of this experiment was to study the usage of clay as potassium permanganate (KMnO4) carrier during storage of banana var. Raja Bulu. A 1,000 g air-dried-clay was incorporated well with 500 ml aquadest, added with 100 ml KMnO4 solution (75 %) made into paste. After air dried for 24 hours and then the powder was put in cheese cloth. Three different amount of clay powder were used as treatment, i.e., 10 g, 30 and 50 g for six fingers of banana with three replicates. Results showed that clay powder effective as KMnO4 carrier for storage of banana var. Raja Bulu. Level of clay powder 30 and 50 g significantly increased banana shelf life as indicated by skin color and hardness by 18 days after treatments, as compared to the control. Application of 30 g clay powder resulted in optimum banana storage as compared to other treatments. This experiment indicates that clay powder is promising as KMnO4 carrier.Key words: absorber, clay powder, post harvest, potassium permanganate, Raja Bulu
Agronomy, Utilization and Economics of Indigenous Vegetables in West Java, Indonesia Edi Santosa; Utami Prawati; , Sobir; Yoko Mine; Nobuo Sugiyama
Jurnal Hortikultura Indonesia Vol. 6 No. 3 (2015): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (290.929 KB) | DOI: 10.29244/jhi.6.3.125-134

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ABSTRACTIndigenous vegetables have become popular in recent Indonesian diet, but agronomic and economic studies on these crops are limited. The objective of this research was to investigate the cultural technique of indigenous vegetables, their uses and economic importance in West Java, Indonesia. Initial market observation was conducted in Bogor to determine the economic value of indigenous vegetables. In depth observations of the indigenous vegetables and interviews with merchants, farmers and consumers were conducted in three districts, i.e., Bogor, Cianjur and Tasikmalaya, focusing on four indigenous vegetables familiar to local people, i.e., genjer (Limnocharis flava (L.) Buchenau), kenikir (Cosmos caudatus Kunth.), leunca (Solanum americanum Miller) and poh-pohan (Pilea melastomoides (Poir.) Wedd.). This study showed that indigenous vegetables have been produced in extensive and semi-intensive cultivations and are sold in local markets daily, although local people do not consume them frequently. Indigenous vegetables held a market share of less than 5% at local markets, and accounted for less than 10% in household vegetable consumption. The reasons for consumers to choose indigenous vegetables were familiarity to these crops, moderate prices, family members’ preference, availability and ease of preparation. Generally, younger family members (<30 years old) bought indigenous vegetables less frequently than older ones (>30 years old), possibly due to lack of information on its use, unfamiliar flavor and high availability of other commercial vegetables commonly grown worldwide.Keywords: Cosmos caudatus, Limnocharis flava, local knowledge, Pilea melastomoides, Solanum americanumABSTRAKPopularitas sayuran indigenus terus meningkat di Indonesia, namun studi agronomi dan ekonominya masih terbatas. Penelitian bertujuan mengkaji budidaya, pemanfaatan dan nilai ekonomis sayuran indigenus di Jawa Barat, Indonesia. Penelitian pendahuluan dilakukan di pasar di wilayah Bogor. Penelitian mendalam dilakukan dengan mewawancarai pedagang, petani dan konsumen, serta mengamati di lahan petani di tiga kabupaten yakni Bogor, Cianjur dan Tasikmalayauntuk empat sayuran indigenus utama yakni genjer (Limnocharis flava (L.) Buchenau), kenikir (Cosmos caudatus Kunth.), leunca (Solanum americanum Miller) dan poh-pohan (Pilea melastomoides (Poir.) Wedd.). Studi menunjukkan bahwa sayuran indigenus diproduksi secara intensif dan semi intensif, serta dijual di pasar setiap hari, walaupun penduduk setempat tidak mengkonsumsi secara teratur. Sayuran indigenus mengisi celung pasar kurang dari 5% dan memenuhi kurang dari 10% kebutuhan sayuran rumah tangga. Konsumen memilih sayuran indigenus karena sudah terbiasa mengkonsumsi, harga terjangkau, disukai anggota keluarga,ketersediaan dan kemudahan mengolah. Secara umum, anggota keluarga muda (usia < 30 tahun) lebih jarang membeli sayuran indigenus dibanding yang lebih tua (usia > 30 tahun), kemungkinandisebabkan keterbatasan informasi nilai guna, adanya aroma asing, dan ketersediaan sayuran lain.Kata kunci: Cosmos caudatus, Limnocharis flava, pengetahuan lokal, Pilea melastomoides, Solanum americanum
Flower Development and Its Implication for Seed Production on Amorphophallus muelleri Blume (Araceae) Edi Santosa; Adolf Pieter Lontoh; Ani Kurniawati; Maryarti Sari; Nobuo Sugiyama
Jurnal Hortikultura Indonesia Vol. 7 No. 2 (2016): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (524.06 KB) | DOI: 10.29244/jhi.7.2.65-74

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ABSTRACTThere are many studies on agronomic and economic advantages of iles-iles (Amorphophallus muelleri Blume), leading to high demand on seed to support the rapid production expansion in many Asian countries. By contrast, there are few studies on flowering phenology and flower morphology although they affect the seed production. Therefore, we evaluated flowering phenology and flower morphology of 80 plants of A. muelleri grown in a field under 65% artificial shading net at Leuwikopo Experimental Farm IPB Darmaga, Bogor, Indonesia from May 2015 to July 2016 in order to improve seed production. A. muelleri produced solitary spadix, with female flowers at the lower part and male flowers at the upper part. Spadix grew slowly for 56-71 days after bud break, and then grew rapidly thereafter for 30-35 days until anthesis. Seed was harvested 9.6 to 10.2 months after anthesis. We devided the development of spadix into seven phases, bud break as stage I and berry maturity as stage VII. Stage VI to VII determined seed production. Seed production was also affected by roots formation and spadix size. There were strong positive correlations between lengths of the female zones with berry production. Some morphological characteristics of spadix were dependent on corm size, thus, it was likely that agronomic improvement to enhance female flower and corm sizes wasimportant in seed production.Keywords: developmental stage, female flower, iles-iles, male flower, seed production ABSTRAKTelah banyak kajian keunggulan agronomi dan ekonomi iles-iles (Amorphophallus muelleri Blume), sehingga mendorong peningkatan permintaan benih untuk mendukung perluasan areal produksi di banyak negara Asia. Namun demikian, kajian fenologi dan morfologi bunga khususnya terkait produksi benih masih terbatas. Oleh karena itu, kami mengkaji perkembangan dan morfologi 80 bunga iles-iles yang ditanam di bawah paranet 65% di Kebun Percobaan Leuwikopo IPB, Bogor, Indonesia dari Mei 2015 sampai Juli 2016 dalam rangka perbaikan produksi benih. Iles-iles menghasilkan sebuah tongkol bunga dengan bunga betina pada bagian bawah dan bunga jantan pada bagian atas. Tongkol bunga tumbuh lambat 58-71 hari setelah pecah tunas, diikuti tumbuh cepat 30-35 hari hingga antesis, dan biji dipanen 9.6 sampai 10.2 bulan setelahnya. Perkembangan bunga dari pecah tunas hingga buah matang dapat dibagi menjadi tujuh tahap. Tahap VI ke tahap VII menentukan keberhasilan produksi biji iles-iles. Selain itu, keberhasilan produksi biji juga dipengaruhi oleh keberadaan akar dan ukuran tongkol khususnya panjang bagian bunga betina. Beberapa karakter morfologi bunga iles-iles dipengaruhi oleh ukuran umbi saat tanam. Oleh karena itu, perlu perbaikan agronomis untuk meningkatkan ukuran umbi dan ukuran bunga betina guna mendukung produksi benih.Kata kunci: bunga betina, bunga jantan, iles-iles, produksi benih, tahap pertumbuhan
Canopy Achitecture, Biomass and Fruit Production of Solanum nigrum L. as Determined by Nitrogen Application Edi Santosa; Marcella Putriantari; Hajime Nakano; Yoko Mine; Nobuo Sugiyama
Jurnal Hortikultura Indonesia Vol. 8 No. 3 (2017): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (378.118 KB) | DOI: 10.29244/jhi.8.3.162-170

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ABSTRACT Demand on fruits of Leunca (Solanum nigrum L.) is increasing in Indonesia due to a rapid expansion of ethnic restaurants, especially Sundanese restaurants. Most fruits come from semi-intensive cultivation in intercropping system, leading to low productivity. In order to improve productivity, nitrogen experiment was carried out at field of Leuwikopo Farm of Bogor Agricultural University, Bogor-Indonesia, during rainy season from December 2013 to April 2014. Four levels of nitrogen, i.e., 0, 60, 120, and 180 kg N ha-1, were arranged in a randomized complete block design with four replicates. The results revealed that canopy architecture, dry matter and fruit production, and fruit quality were highly affected by nitrogen application. Increasing nitrogen levels increased biomass and fruit production. Plants treated with nitrogen at level of 60 kg ha-1 produced ideal height for local labor and stable weekly fruit production than other levels. Hence, N fertilizer is essential for achieving high productivity of S. nigrum.Keywords: canopy shape, fruit load, indigenous vegetable, leunca, ranti kebo ABSTRAK Permintaan buah Leunca (Solanum nigrum L.) terus meningkat di Indonesia sejalan dengan perkembangan restoran etnis khususnya restoran Sunda. Sebagian besar buah leunca berasal dari tanaman sampingan secara tumpangsari, sehingga produktivitas rendah. Dalam rangka meningkatkan produktivitas, percobaan pemberian nitrogen dilakukan di Kebun Percobaan Leuwikopo IPB, Bogor pada musim hujan Desember 2013 sampai April 2014. Nitrogen diberikan empat taraf yaitu 0, 60, 120, dan 180 kg N ha-1, yang disusun dalam rancangan acak kelompok dengan empat ulangan. Hasil menunjukkan bahwa bentuk kanopi, produksi bahan kering dan produksi buah serta kualitas buah dipengaruhi oleh pemberian nitrogen. Peningkatan dosis nitrogen meningkatkan bahan kering dan produksi buah. Tanaman dengan perlakuan 60 kg N ha-1 menghasilkan tinggi yang ideal bagi pemanen, dan hasil mingguan yang stabil dibandingkan dengan taraf yang lebih besar. Oleh karena itu, pemupukan nitrogen penting dilakukan untuk meningkatkan produktivitas leunca.Kata kunci: beban buah, bentuk kanopi, leunca, ranti kebo, sayuran tradisional
Yield Stability and Disease Incident on Six Tomato Genotypes Under Shading Zulfa Ulinnuha; Muhamad Achmad Chozin; Edi Santosa
Jurnal Hortikultura Indonesia Vol. 10 No. 1 (2019): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (562.301 KB) | DOI: 10.29244/jhi.10.1.10-19

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Tomato becomes important as under-storey crop in agroforestry in Indonesia. However, farmers claim that there is yield reduction under such system. Hence, six tomato genotypes were planted under 50% reduced sunshine and full sunshine as control using randomized block nested design with genotype as main plot. The study was carried out in December 2016 to March 2017 at Cikarawang Experimental Farm, IPB Bogor. Research aimed to evaluate the production stability of tomato genotypes under shading treatment. Results showed that 50% shading affected tomato production and disease incident. Number of collected-fruit was 15-60% higher under 50% shading except for Apel Belgia and Tora genotypes that tended to decrease. Incident of gemini virus decreased by 80% and its severity decreased by 70% under 50% shading. However, 50% shading reduced tomato yield at rate 24.1% in each harvesting cycle due to a tendency on reduction on individual fruit size, irrespective genotypes. Present study demonstrated that genotype and disease incident determined tomato yield under shading. It needs further evaluation on the cause of low disease infection under 50% shading. Keywords: agroforestry, anthocyanin, disease incident, gemini virus, Solanum lycopersicum
Determination of the Best Potassium Extraction Method for Tomato (Solanum lycopersicum L.) on Andisols Endang Gunawan; Anas D. Susila; Atang Sutandi; Edi Santosa
Jurnal Hortikultura Indonesia Vol. 10 No. 3 (2019): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (369.856 KB) | DOI: 10.29244/jhi.10.3.173-181

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Penetapan rekomendasi dosis kalium (K) berdasarkan uji tanah untuk tanaman tomat pada tanah Andisol belum banyak dikaji di Indonesia. Penelitian diawali dengan pembuatan status hara K tanah di Kebun Percobaan IPB Pasirsarongge Cianjur dilanjutkan dengan uji korelasi di rumah plastik PKHT IPB Tajur Bogor pada Desember 2015 sampai Mei 2016. Tujuan penelitian adalah menetapkan metode ekstraksi K terbaik bagi tanaman tomat di tanah Andisol. Status K tanah dibuat dengan larutan kalium sulfat (K2SO4) sebesar 0, ¼X, ½X, ¾X, dan X dimana X adalah 413.4 kg K ha-1 sebagai dosis K maksimum yang ditambahkan untuk mencapai kadar K maksimum dalam larutan tanah. Larutan K2SO4 disiram merata pada bedengan tanah dan diinkubasi selama 4 bulan. Ekstraksi K tanah menggunakan 5 metode yaitu: Bray 1 (HCl 5N), HCl 25%, Morgan Wolf (NaC2H3O2.3H2O), Mechlich (HCl 0.05N + H2SO4 0.025N) dan NH4OAc (NH4OAc, pH 7). Hasil penelitian menunjukkan adanya perbedaan respon tinggi tanaman, bobot kering biomas, kandungan K tanaman terhadap tingkat status hara K tanah. Pola respon kuadratik ditunjukkan pada tinggi tanaman umur 6 dan 7 minggu setelah tanam, dan bobot kering total. Metode ekstraksi K Andisols terbaik untuk tomat adalah NH4OAc dengan nilai koefisien korelasi (r): 0.75. Kata kunci: biomas, K2SO4, metode ekstraksi, NH4Oac, status K
Morphophysiological Changes of Mangosteen Seedling (Garcinia mangostana L.) on Polyethylene Glycol (PEG) Application Dhika Prita Hapsari; Roedhy Poerwanto; Didy Sopandie; Edi Santosa; Deden Derajat Matra
Jurnal Hortikultura Indonesia Vol. 11 No. 1 (2020): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.11.1.1-12

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Mangosteen requires drought condition to induce flowering, however extending drought period might restrict the plant growth. Therefore, the response of mangosteen to drought stress needs to be studied. This research conducted on May to July 2017 using Randomized Block Design with one factor. The experiment comprised of 4 levels of polyethylene glycol (PEG 6000) treatment, i.e., PEG 0%, PEG 10% (-0.03 MPa), PEG 15% (-0.41 MPa) dan PEG 20% (-0.67 MPa) (m.v-1). The results showed that there is a dryness of the mangosteen leaves given PEG which occured slowly, starting from the edge of the leaves into the center of midrib. Water consumption was fluctuated until the end of experiment, which the highest was 33.33 ml per day in 0% PEG treated plant, then decreased until 10 ml per day in 20% PEG treated plant. Proline content increased from the first week to the third week after all PEG treatments. The highest proline content were found in 15% PEG (22.14 umol.g-1) and 20% PEG (23.46 umol.g-1) treated plants. Plant dry mass was low under water stress, and more severe stress resulted in more reduction of plant dry mass level. Water stress did not affect the N and Mg content significantly, but reduced P content in mangosteen seedling. Keywords: evapotranspiration, nutrient content, proline, water stress
Co-Authors , Hariyadi , Kholidi , Susilawati Abdoellah, Soetanto Abdul Gani Gani Tarigan Abdul Harris Burhan Achmad Taufiq Ade Wachjar Ade Wachjar Ade Wahjar Aditya Wira Tantra Adolf P. Lonto Adolf Pieter Lontoh, Adolf Pieter Agik Suprayogi Agus Buono Agus Sufyan Ahmad Fadli Alghifari AHMAD JUNAEDI Ahmad Zamzami Ajmir Akmal Almas Lathuf Assyura Anas D. Susila Anas D. Susila Anas Dinnurrohman Susila Anas Dinurrohman Susila Anas Dinurrohman Susila Andreas Kefi ANDRIA AGUSTA Ani Kurniawati Ani Kurniawati Ani Kurniawati Anung Wahyudi Aptika Hana Prastiwi Nareswari Arief Hartono Ariny Jihan Thifany Arisa Noguchi Arjuna, Rizka Tri Arya Widura Ritonga Atang Sutandi Bambang S. Purwoko Bambang Sapta Purwoko Budiman, dan Candra Careca Sepdihan Rahmat Hidayatullah Chairunnisak Chairunnisak Chairunnisak, Chairunnisak Chun Lan Lian Deden Derajat Matra Deden Drajat Matra Delvi Maretta Desta Wirnas Dhika Prita Hapsari Diaguna, Ridwan Didy Sopandie Diny Dinarty Dulbari, Dulbari Dwi Guntoro Dwi Sutari Laksono Efendi, Darda Eko Sulistyono Elda Kristiani Paisey Elly Kristiati Agustin, Elly Kristiati Endang Gunawan Fajar Delli Wihartiko Ferdianto Budi Samudra Fifin Nashirotun Nisya Gatot Pramuhadi Gerson Hans Maure Ginanjar Pramudya Sakti Gunar Widiyanto, Gunar Hajime Nakano HAJRIAL ASWIDINNOOR Heni Purnamawati Herdhata Agusta Herdhata Agusta Herman Wafom Tubur I Wayan Astika Imam Fauzi Fauzi Tanjung Imdad Julian Purwanto Imron Gempur Saputro Ince Raden Indra Mario Stefano Intan Dewi Puspitasari Irfan Rabani Irfanda, Munandar Is Helianti Ismadi Ismadi Iswandi Anas Iswandi Anas Joan Joulanda Grace Kailola Juang Gema Kartika Karmanah, Karmanah Kazi Liaquat Hossain Ken Takahata Ken Takahata Ken Takahata, Ken Luh Putu Ratna Sundari Lutfy Ditya Cahyanti M A Chozin Machfud Machfud Maghfirah Marcella Putriantari Marchella Putriantari Martini Aji Maryarti Sari Maryati Sari Md. Abdul Wadud Md. Abul Kashem Md. Shajahan Ali Memen Surahman Mohamad Rahmad Suhartanto Mohammad Abdul Wadud Muhamad Zainul Fattah Muhammad dan Heni Purnamawati Haryadi Danang Faqihhudin Muhammad Raihan Ferdiansyah Muhammad Thamrin Munandar Irfanda MUNIF GHULAMAHDI Nadia Dwi Kartika Nani Yulianti Nina Ariesta Nobuo Sugiyama Nobuo Sugiyama Nobuo Sugiyama Nobuo Sugiyama Nurlela, Nurlela Nurul Hidayah NURUL HIDAYAH Nurul Khumaida Okti Syah Isyani Permatasari Panca Dewi Manu Hara Karti Purwanto, Imdad Julian Purwono Purwono Purwono Rahayu Safitri Rahman Rahmat Budiarto Rd. Selvy Handayani Rianto, Dwi Fajar Ridwan Diaguna Riska sukmawati Rizka Tri Arjuna ROEDHY POERWANTO Rohman, Fadil Rosdiana, Siska Sandra Arifin Aziz Santun RP Sitorus Sigit Pramono Siska Rosdiana Siti Halimah Slamet Susanto Sobir Sobir Sobir Sobir Soekisman Tjitrosemito Sofyan Zaman sofyan zaman Sri Nurdiati Sri Suryo Sukoraharjo SUBOWO GITOSUWONDO Sugiyanta Sulassih, . Supijatno Supijatno Supijatno Susilawati Suwarto Syaiful Anwar Tantra, Aditya Wira Tjahja Muhandri Ulfha Junita Ulinnuha, Zulfa Utami Prawati Wijaya, Aldi Kamal Winarso D. Widodo Winarso Drajad Widodo Yoko Mine Yoko Mine Yoko Mine Yoko Mine Yonny Koesmaryono Yonny Koesmaryono Zulfa Ulinnuha