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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia Jurnal Fitopatologi Indonesia Jurnal Hortikultura Indonesia (JHI) Jurnal Natur Indonesia Journal of Tropical Soils Agrovigor: Jurnal Agroekoteknologi Jurnal Hortikultura JURNAL AGROTEKNOLOGI Jurnal Agroteknos Warta IHP (Warta Industri Hasil Pertanian) International Journal of Applied Biology Jurnal AGROSAINS dan TEKNOLOGI Journal of Tropical Crop Science Journal of Tropical Horticulture JERAMI Indonesian Journal of Crop Science Menara Perkebunan Jurnal Hexagro Media Pertanian Jurnal Manusia dan Lingkungan International Research Journal of Business Studies

Roedhy Poerwanto

Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (IPB University), Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia

Author-ID : 342995

Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Industrial & Manufacturing Engineering Medicine & Pharmacology Social Sciences

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Perlakuan Air Panas dan Pengaturan Suhu Simpan untuk Mempertahankan Kualitas Buah Mangga (Mangifera indica L.) cv. Gedong Ilmi, Nadhirah Karimatul; Poerwanto, Roedhy; Sutrisno, Sutrisno
Jurnal Hortikultura Vol 25, No 1 (2015): Maret 2015
Publisher : Indonesian Center for Horticulture Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jhort.v25n1.2015.p78-87

Penanganan pascapanen yang Â kurang tepat mengakibatkan kualitas buah mangga rendah dan kehilangan hasil. Oleh karena itu, dalam penelitian ini dilakukan pengujian perlakuan pascapanen berupa perlakuan panas dan suhu penyimpanan pada buah mangga Gedong. Tujuan penelitian adalah menentukan perlakuan yang dapat mempertahankan kualitas pascapanen buah mangga Gedong. Penelitian dilaksanakan pada bulan Juli 2013 di Laboratorium Pusat Kajian Hortikultura Tropika, Institut Pertanian Bogor. Rancangan penelitian yang digunakan adalah rancangan acak lengkap dengan pola split plot terdiri atas dua faktor yaitu suhu pencucian (60Â±1Â°C, 53Â±1 Â°C, suhu air normal) dan suhu penyimpanan (suhu 18,1Â±1Â°C, 16,1Â±1Â°C, suhu ruang). Pencucian dengan suhu 53Â±1Â°C dapat digunakan untuk membersihkan buah. Perlakuan yang dapat menghambat perubahan susut bobot, kekerasan buah, kandungan asam (asam tertitrasi total), dan padatan terlarut total adalah penyimpanan pada suhu rendah (16,1Â±1Â°C dan 18,1Â±1Â°C). Perlakuan yang memberikan penampilan yang baik, dapat menekan perkembangan penyakit antraknos, dan menghambat perubahan warna buah adalah kombinasi perlakuan suhu pencucian 53Â±1Â°C Â dengan suhu simpan 16,1Â±1Â°C.

Land Suitability Criteria for Intensively Managed Cavendish Banana Crop in Way Kambas East Lampung, Indonesia Ansyori, .; Sudarsono, .; Poerwanto, Roedhy; Darmawan, .
JOURNAL OF TROPICAL SOILS Vol 15, No 2: May 2010
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2010.v15i2.159-167

Land Suitability Criteria for Intensively ManagedÂ Cavendish Banana Crop in Way Kambas East Lampung, Indonesia (Ansyori, Sudarsono, R Poerwanto, and Darmawan): Banana as one of the pre-eminent products of horticultural crop has a very important role in the growth of agricultural sector.Â The research aimed to study the land characteristics which influence the Cavendish banana crop yield and proposing the land suitability classification criteria for the land utilization type of Cavendish banana crop with intensive management which has been tested based on the production rate in the field.Â For this purpose, there were 36 observation land units specifically designed by considering factors such as soil subgroups, slopes, land utilization types, and land productivity levels.Â At each observation land unit, the land utilization types and land characteristics were indentified.Â The relation between land characteristics and production was tested with correlation and regression analysis.Â The results of some statistical tests were contrasted and then selected as the basis to develop the land suitability classification criteria for Cavendish banana crop which was intensively managed.Â The research findings indicated that the banana crop yield levels were significantly influenced and determined by the land characteristics of soil bulk density, cation exchange capacity, soil permeability, total porosity, exchangeable sodium percentage, soil textural class, and soil erodibility.

Secretory Duct Structure and Phytochemistry Compounds of Yellow Latex in Mangosteen Fruit DORLY DORLY; SOEKISMAN TJITROSEMITO; ROEDHY POERWANTO; JULIARNI JULIARNI
HAYATI Journal of Biosciences Vol. 15 No. 3 (2008): September 2008
Publisher : Bogor Agricultural University, Indonesia

Yellow latex is the main problem in mangosteen agribusiness, because it is one factor lowering the fruit quality. The structure of yellow latex secretory ducts in the flower and fruit as well as in the root, stem and leaf of mangosteen (Garcinia mangostana L.) seedling and the qualitative phytochemistry of yellow latex were studied. The ducts were branched, canal-like type. They were found in the exocarp, mesocarp, endocarp, aril of the fruit, flower, stem, and leaf. In the fruit, the biggest diameter of the secretory ducts was found in the endocarp. There were continuous secretory ducts from fruit stalk to the fruit. Ultrastructural observation showed that the ducts surrounded by specific epithelial cells, which were living cells containing dense cytoplasm with plastid, mitochondria and golgi apparatus organelles. The qualitative test indicated that the yellow latex collected from stem bark, outer part of fruit, young fruit pericarp, mature aril and young aril contained terpenoid, flavonoid and tannin, but not alkaloid, saponin and steroid, except in the young aril containing the steroid. Key words: secretory ducts, yellow latex, endocarp, aril, epithelial cells

Changes of Gibberellin and Total Sugar Content in Flower Developmental Stages of Mangosteen I NYOMAN RAI; ROEDHY POERWANTO; LATIFAH KOSIM DARUSMAN; BAMBANG SAPTA PURWOKO
HAYATI Journal of Biosciences Vol. 13 No. 3 (2006): September 2006
Publisher : Bogor Agricultural University, Indonesia

The objectives of this experiment were to study the changes of gibberellic acid and total sugar content in flower developmental stages of mangosteen. The result showed that flower development of mangosteen consisted of four stages: induction, differentiation, maturition of flower organs, and anthesis. Floral induction was microscopically characterized by the swelling of the basal structure of the new shoot. It was found that induction stage of mangosteen flowering was characterized by sharp decrease of gibberellic acid (GA3, GA5, GA7) and increase of total sugar content of leaf. On the other hand, it was found that leaf of the non-flowering shoot apices had high gibbrellic acid and low total sugar. Key words: mangosteen, flowering, induction, gibberellic acid

In Vitro Growth and Rooting of Mangosteen (Garcinia mangostana L.) on Medium with Different Concentrations of Plant Growth Regulator FAUZIYAH HARAHAP; ROEDHY POERWANTO; . SUHARSONO; CICIK SURIANI; SUCI RAHAYU
HAYATI Journal of Biosciences Vol. 21 No. 4 (2014): December 2014
Publisher : Bogor Agricultural University, Indonesia

Propagation of mangosteen is challenging for many reasons, including limited seed set, slow rate of seedling growth, and difficulty with root formations. The objective of this research was to find the best combination of medium and plant growth regulator for in vitro growth and rooting of mangosteeen seed. Various types of explant (a whole seed; seed divided into 2, 3, and 4 cross sections; seed divided into 2, 3, and 4 longitudinal sections) were treated with five concentrations of benzyl amino purine (BAP; 0, 2.5, 5, 7.5, 10 mg/L) for shoot induction in ½ Nitrogen (N) Murashige and Skoog (MS) medium. The shoots were rooted on MS and woody plant medium (WPM) media with several combinations of indole butyric acid (IBA) and naphtalene acetic acid (NAA). Treatments for root induction were applied as follows: (i) low dose, given during induction of rooting, (ii) soaking the base of the shoots in medium treated with a high dose of auxin for 5 days, and then growing the shoots in MS ½ N with 1 mg/L NAA + 1 mg/L BAP medium. Our result show that BAP positively affected mangosteen bud growth. The best medium for mangosteen shoot regeneration was found to be MS ½ N + 5 mg/L BAP. This medium induced the highest number of shoots from the seed explant cut into four cross sections. We found the best medium to induce in vitro rooting of mangosteen shoot was MS ½ N + 3 mg/L indole butiric acid (IBA) + 4 mg/L NAA medium. Some treatment negatively affected growth. Soaking the mangosteen shoot base in a medium with an overly high dose of auxin seemed to disrupt and inhibit growth of the mangosteen shoot.

Peanut Cultivar Differences in Yield Based on Source and Sink Characteristics Iskandar Lubis; Heni Purnamawati; Roedhy Poerwanto; , Yudiwanti; Ahmad Ghozi Mansyuri; Sri Astuti Rais
Indonesian Journal of Agronomy Vol. 40 No. 3 (2012): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This research was conducted to determine peanut cultivar differences in sink and source sizes as represented by vegetative growth and yields. Two sets of experiments were conducted at Bogor Agricultural University farms, Sawah Baru and Cikarawang (06o33’, S, 106o45’E, 250 m altitude). Planting was conducted on June 12 and June 20, 2007 using 20 local and national cultivars in each location. Both experiments used randomized complete block design with three replications. Data were analyzed using correlation and regression analysis. Size of experimental unit was 1.6 m x 4.0 m, with planting density 125,000 plants ha-1. Urea, SP36 and KCl were applied at planting date in the rate of (kg ha-1) 45 N, 100 P2O5 and 50 K2O. Four stages of plant growth were studied: 25 days after planting (DAP); 6 weeks after planting (WAP); 10 WAP (pod filling) and 14 WAP (harvest). Five plants were sampled at 25 DAP, two plants at 6 WAP, 10 WAP and 14 WAP, and separated into leaves, stems, roots and pods. The average yield of two experimental stations showed that Biawak cultivar had the highest yield due to relatively higher aboveground dry weight (source), pod filling percentage and maximum number of gynophor+pods (potential sink). Jepara cultivar had the lowest yield due to low pod filling percentage and potential sink, although its source was considered to be in the medium category. Above ground dry weight at 6 and 10 WAP had close relation with Crop Growth Rate (CGR) during 25 DAP-6 WAP and 6-10 WAP, and the higher CGR during those periods were more related to leaf area index than to single leaf photosynthetic capacity. Keywords: crop growth rate, pod filling percentage, leaf area index, single leaf photosynthetic capacity

Induksi Pembungaan Jeruk Keprok Garut Melalui Pemangkasan Akar, Penyungkupan Tajuk, dan Strangulasi Mohamad Akhbar Maulana; Roedhy Poerwanto; Darda Efendi
Buletin Agrohorti Vol. 7 No. 2 (2019): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Induksi pembungaan menggunakan paclobutrazol secara berlebihan dapat mematikan tanaman jeruk akibat penumpukan residu dalam tanah. Penelitian ini bertujuan untuk mendapatkan teknik induksi pembungaan tanaman jeruk yang efektif dalam menggantikan paclobutrazol untuk induksi pembungaan. Penelitian dilaksanakan di kebun percobaan Institut Pertanian Bogor Sindangbarang pada bulan Februari hingga bulan Juli 2017. Percobaan menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) faktor tunggal yang terdiri dari 5 perlakuan yaitu kontrol, strangulasi, pemangkasan akar, penyungkupan tajuk, dan paclobutrazol. Data dianalisis dengan analisis sidik ragam yang kemudian dilanjutkan dengan uji lanjut Duncan. Semua perlakuan termasuk kontrol mempengaruhi munculnya tunas vegetatif, perlakuan penyungkupan tajuk tanaman menghasilkan jumlah tunas paling banyak dan panjang tunas paling panjang. Aplikasi paclobutrazol menunjukkan panjang daun paling pendek dan lebar daun paling sempit. Curah hujan yang tinggi menyebabkan semua perlakuan fisik dan kimia tidak menghasilkan bunga. Perlakuan fisik pada tanaman dapat menggantikan paclobutrazol namun perlu dilakukan penelitian lebih lanjut untuk mendapatkan perlakuan fisik yang dapat menginduksi pembungaan pada tanaman jeruk.

Peningkatan Pembungaan dan Hasil Biji Bawang Merah Varietas Bima melalui Vernalisasi dan Aplikasi GA3 Dian Fahrianty; Roedhy Poerwanto; Winarso Drajad Widodo; Endah Retno Palupi
Jurnal Ilmu Pertanian Indonesia Vol. 25 No. 2 (2020): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

The low production of true seed of shallot (TSS) is mostly caused by a low flowering rate. The research was aimed to increase the flowering rate and seed yield in lowland (240 masl) and highlands (1250 masl) by vernalization and submersion of the seed bulbs in GA3 before planting. The research was arranged in a completely randomized block design with 2 factors and replicated four times. The first factor was vernalization, i.e. without and with vernalization at 10±2°C for 30 days, and the second factor was the submersion of the seed bulbs following vernalization in GA3 at the concentrations of 0, 100, and 200 ppm for 1 h. Parameters measured were time of 50% flowering (days after planting), percentage of flowering plants, number of umbel per plant, number of floret per umbel, fruitset, seed weight per umbel and per plant, as well as the percentage of seed germination. The result suggested that when production of TSS of var. Bima is to be carried out in the lowland then the seed bulbs had to be vernalized at 10±2°C for 30 days which will increase the flowering percentage and seed yield. If the production of TSS is to be carried out in the highland then vernalization at 10±2°C for 30 days will increase the flowering percentage and seed yield. However, if for any reason vernalization is impossible to proceed then the submersion of the seed bulbs in 100 ppm GA3 for 1 h was sufficient to increase the flowering percentage and seed yield. The produced seeds (TSS) either in the low as well as in the highlands had high germination percentages. Keywords: germination, highland, lowland, umbel, true seed of shallot

Keanekaragaman dan Patogenisitas Fusarium spp. Asal Beberapa Kultivar Pisang Widya Sari; Suryo Wiyono; Ali Nurmansyah; Abdul Munif; Roedhy Poerwanto
Jurnal Fitopatologi Indonesia Vol. 13 No. 6 (2017)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Fusarium wilt disease caused by pathogenic fungus F. oxysporum f. sp. cubense is an important disease in banana plants. This research was aimed to identifiy Fusarium spp. collected from banana plants showing wilt disease based on morphology and molecular characters. The fungi isolates obtained was further examined for its pathogenicity and distribution in various parts of banana plants. Based on morphological characters, i.e. growth rate, total conidia, colony color, macroconidium, microconidium, and chlamydospores, F. oxysporum f. sp. cubense can be differentiated from other species of Fusarium, but not the strain. Molecular analysis using specific primers VCG 01213/16 and Foc1/Foc 2 successfully identified 13 and 7 isolates of F. oxysporum f. sp. cubense TR4 and F. oxysporum f. sp. cubense non TR4, respectively. Analysis using universal primer ITS4/ITS5 identified 7 isolates of F. solani, 1 isolate of F. verticillioides, and 2 isolates non Fusarium. Infection of F. oxysporum f. sp. cubense TR4 and non-TR4 were found mostly in pseudo stems, whereas F. solani and F. verticillioides dominantly colonized banana corm. Pathogenicity test showed that F. oxysporum f. sp. cubense TR4 and non-TR4 caused necrosis on corm of cv. Ambon Kuning. Similar necrosis symptom was also observed on infection of F. solani but with less severity.

Pengaruh Beberapa Khamir Antagonis terhadap Penyakit Antraknosa dan Umur Simpan pada Buah Mangga Riana Jumawati; Roedhy Poerwanto; Suryo Wiyono; Ketty Suketi
Jurnal Fitopatologi Indonesia Vol 14 No 5 (2018)
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Effect of Various Yeasts Antagonists on Anthracnose Disease and the Shelf Life of MangoPostharvest decay on mango may occur due to physiological damage and/or postharvest disease especially anthracnose. This postharvest decay may decrease the quality of mango fruit. The use of antagonists yeast as biocontrol agent is an alternative control measure for postharvest diseases of fruits. This study aimed to screen yeast species as biological control agents and in the same time delaying the maturity of fruits to extend its shelf life. Six isolates of yeasts were evaluated, namely Cryptococcus albidus, Cryptococcus terreus, Aureobasidium pullulans, Rhodotorula minuta, Candida tropicalis, Pseoudozyma hubeiensis); fungicides treatment using azoksistrobin was applied for comparative treatment. The study was conducted at two temperature conditions, namely room temperature and 15 ° C. It was evidenced that C. albidus, A. pullulans, and C. tropicalis were effective to control anthracnose disease on mango under both temperatures. Furthermore, C. tropicalis and A. pullulans were able to extend manggo shelf life for 21 days at room temperature and for 54 days at 15 °C, respectively.

Co-Authors , Dorly , Sakhidin , Yudiwanti . DARMAWAN . SAMANHUDI . SUHARSONO Abdul Munif Achmad Surkati Ade Wachjar Agus Purwito Ahmad Ghozi Manshuri Ahmad Ghozi Mansyuri Ahmad S. Abidin Ahmad Sutopo Akmal, Ajmir ALI NURMANSYAH Alifiya Herwitarahman Anas D Susila Anas Dinurrohman Susila Andria Agusta ANDRIA AGUSTA Ansyori, Ansyori Aris Purwanto Asmini Budiani Bambang S . Purwoko Bambang S. Purwoko Bambang Sapta Purwoko Cenra Intan Hartuti Tuharea CICIK SURIANI D Fatria D Fatria Deden Derajat Matra Defitrianida, Asyhuriyah Wardah Dewi Sukma Dhika Prita Hapsari Dian Fahrianty Didy Sopandie Djoko Santoso Dorly Dorly E Efendi Edi Santosa Edi Santosa Edi Santosa Efendi, Darda EKO SETIAWAN Eko Setiawan Endah Retno Palupi Endang Gunawan Faqih Udin Fauziyah Harahap Fumio Fukuda HAJRIAL ASWIDINNOOR Hanifah Muthmainnah Hartrisari Hardjomidjojo Hiroshi Inoue I Hidayati I MADE ARTIKA I NYOMAN RAI Ilmi, Nadhirah Karimatul Iman Rusmana Inanpi Hidayati Sumiasih, Inanpi Hidayati Indah Wulandari INDAH WULANDARI Irsyad Maulana Iskandar Lubis Jawal Muhammad Anwarudinsyah Juanasri Juanasri JULIARNI JULIARNI Kasutjianingati . Ketty Suketi Kuniyuki Saitoh La Ode Safuan Laksono Trisnantoro Latifah K. Darusman Latifah Kosim Darusman Lizawati . Lubis, Wahyu Muhammad Yuha Lukman Liferdi Machfud Machfud Marimin Marimin Matra, Deden Derajat Maulana, Mohamad Akhbar Memen Surahman Mohamad Akhbar Maulana Mohamad Rahmad Suhartanto Muhamad Noor Azizu, Muhamad Noor Muhammad Arif Nasution Muhammad Darmawan Musdalifah, Nuzlul Naohiro Kubota Nian Rimayanti H. Nobuo Sugiyama Nono Sutrisno Nono Sutrisno Nur Wahyu Sariningtias Nurfitri Ramadhani Nurul Khumaida Odit Ferry Kurniadinata Qadir, Abdul Rahayu, Resa Sri Rahmat Budiarto Ramdan Hidayat Rd. Selvy Handayani Resa Sri Rahayu Resa Sri Rahayu Retno Astuti Riana Jumawati Rofiq, Muhamad Abdul Roza Yunita S Susanto Santun R.P. Sitorus Septirosya, Tiara Slamet Susanto Soaloon Sinaga Sobir Sobir SOEKISMAN TJITROSEMITO Sri Astuti Rais Sri Yuliani Sri Yuliani SRIANI SUJIPRIHATI Sriani Sujiprihati Suci Rahayu Sudarsono Sudirman Yahya Suryo Wiyono Sutrisno, Sutrisno T Purnama Tanari, Yulinda Taruna Shafa Arzam Taruna Shafa Arzam, Taruna Shafa TARUNI SRI PRAWAST MIEN KAOMINI ANY ARYANI DEDY DURYADI SOLIHIN Tetty CHAIDAMSARI Tiara, Dede Titin Purnama Tri Muji Ermayanti Trikoesoemaningtyas Vandra Kurniawan Wa Ode Muliastuty Widya Sari Winarso D. Widodo Y A Purwanto Y A Purwanto Yandra Arkeman Yundari, Yundari Yunus, Ismadi

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