Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

P-Index

This Author published in this journals

All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Indonesian Journal of Agricultural Science Jurnal Pengkajian dan Pengembangan Teknologi Pertanian Jurnal Penelitian Tanaman Industri Jurnal Agrotropika

Bambang S. Purwoko

Departemen Agronomi dan Hortikultura, Institut Pertanian Bogor, Jl. Raya Darmaga, Bogor 16680

Author-ID : 350223

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Engineering Industrial & Manufacturing Engineering

Published : 37 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4

Pertumbuhan Bibit Tanaman Jarak Pagar (Jatropha curcas L.) pada Berbagai Kedalaman dan Posisi Tanam Benih Santoso, Bambang B.; Purwoko, Bambang S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 1 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Germination and growth at seedling stage are critical phases in plant life cycle, especially for physic nut (Jatropha curcas L.) usually grown in a dry land. Therefore seedling preparation plays an important role in nursery stock production. Position and depth of seed sowing affected the germination process and further seedling growth and development. A Completely Randomized Design with two factors was used in the experiment, i.e., depth of seed sowing (1, 2, 3, 4, and 5 cm) and seed position (seed with micropyle at the bottom, face-down, and layback). The result showed that position and depth of seed sowing affected the germination and early growth and development of seedling. The effect of seed position on growth and development of seedling persisted until the end of the experiment when the seedlings were two months old. Face-down position with 2 - 3 cm depth represented the best position and depth for seedling growth. Key words: Early seedling growth, micropyle, face-down position, layback position

Pengaruh Alelopati Jarak Pagar (Jatropha curcas L.) terhadap Perkecambahan Benih Jagung, Tomat dan Padi Gogo Raden, Ince; Purwoko, Bambang S.; Santosa, Edi; Hariyadi, ,; Ghulamahdi, Munif
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 1 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of this research was to evaluate the effect of extract of leaves, seed and root of physic nut on the germination of corn, tomato, and upland rice. Research was conducted by using Complete Randomized Block Design with two factors, i.e., plant organ (leaves, seed and root) and species (corn, tomato and upland rice). The results showed that extract of 36 g dried organ/200 ml water (0.18 g/ml water) affected seed germination of corn, tomato, and upland rice. Extract of leaves tended to reduce percentage of corn seed germination (55.30% vs 70.68%), and extract of root to reduce germination of tomato and upland rice, 52.70% and 68.67%, compared to control 76% and 84%, respectively. Key words: Plant organ extract, physic nut, germination

Pembentukan Galur Haploid Ganda Padi Gogo dengan Sifat-Sifat Tipe Baru melalui Kultur Antera Herawati, Reny; Purwoko, Bambang S.; Khumaida, Nurul; Dewi, Iswari S.; Abdullah, Buang
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The breeding of upland rice with New Plant Type characters in relatively short time can be done by using anther culture technique. The technique has been recognized as a rapid and efficient technology for crop improvement. Plant materials used in this research were F1 crossing P1 (Fatmawati x Way Rarem), P2 (Fatmawati x SGJT-28), P3 (Fatmawati x SGJT-36), P4 (Way Rarem x Fatmawati), P5 (SGJT-28 x Fatmawati), and P6 (SGJT-36 x Fatmawati). Media for calli induction (N6) and regeneration (MS) were according to Dewi methods (2003). The results of this study indicated that P3 (Fatmawati x SGJT-36) and P6 (SGJT-36 x Fatmawati) from resiprocal crosses gave better response in anther culture than the others crosses for their calli induction and green plant regeneration. From the six F1 crosses, 348 (53.5%) spontaneous doubled haploid (DH) pure lines were obtained, six lines from Farmawati x Way Rarem, 13 lines from Fatmawati x SGJT-28, 187 lines from Fatmawati x SGJT-36, three lines from Way Rarem x Fatmawati, five lines from SGJT-28 x Fatmawati, and 134 lines from SGJT-36 x Fatmawati. These lines should be evaluated and characterized for their agronomical and morphological traits. Key words: Anther culture, doubled haploid, callus induction, green plant regeneration

Tanggap Pertumbuhan dan Hasil Cabai (Capsicum annuum L.) terhadap Inokulasi Fungi Mikoriza Arbuskula pada Tanah Ultisol Purnomo, D. Wasgito; Purwoko, Bambang S.; Yahya, Sudirman; Sujiprihati, Sriani; Mansur, Irdika; Amisnaipa, ,
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The aim of this research was to test the utilization of arbuscular mycorrhizal fungus (AMF) to improve adaptation ability of chili to aluminum (Al) stress based on growth and yield response in four genotypes of chili (Capsicum annuum L.). The research was carried out at University Farm of IPB in Cikabayan from September 2006 to Maret 2007. The media was Ultisol from Gajrug (Lebak, Banten) in polybag. Four genotypes of chili, PBC 619 and Jatilaba (Al tolerant genotypes), and Cilibangi 3 and Helm (Al sensitive genotypes) were treated with and without inoculation of Gigaspora margarita, and planted further in media without Al stress (Al saturation 0.77%) and Al stress (Al saturation 60.85%). Variables observed were degree of AMF infection, root length, plant height, shoot dry weight, number of harvested fruits, fruit length, fruit weight and weight of harvested fruits. The results showed that inoculation of G. margarita effectively decreased negative influence of Al stress by increasing plant height, shoot dry weight, number of harvested fruit, fruit length, weight per fruit and weight of harvested fruits. Inoculation of G. margarita to Al sensitive genotypes was more advantageous than to tolerant genotypes. The Al sensitive genotypes were adapted to Al stress if they were inoculated with G. margarita. In Al stress condition, inoculation of G. margarita to Al sensitive genotypes increased weight of harvested fruits up to 94.49% in Cilibangi 3 and 80.37% in Helm. Key words: Adaptation, aluminum stress, arbuscular mycorrhizal fungus, Capsicum annuum L., Ultisol

Evaluasi Beberapa Ekotipe Jarak Pagar (Jatropha curcas L.) untuk Toleransi Cekaman Kekeringan Lapanjang, Iskandar; Purwoko, Bambang S.; Hariyadi, ,; Budi R, Sri Wilarso; Melati, Maya
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Drought stress in crop occurs due to imbalance between water supply and demand. Crop responses to drought stress depend on their ecotypes. This study was aimed at examining the tolerance of the physic nut ecotype to drought stress in inceptisol. This study was conducted at Silviculture greenhouse, Forestry Faculty IPB, from September to December 2007. A Completely Randomized Design with two factors was used in the experiment, i.e. water content (80, 60, and 40 % of field capacity) and physic nut ecotypes (Palu, NTB, IP-A, and IP-P) The results showed that (1) drought reduced stem diameter (31.4%), root length (65.49%) and leaf area (72.73%), and decreased plant dry weight (74.83%),(2) tolerance level of the evaluated physic nuts on the drought stress were moderate tolerance (IP-1A, NTB, Palu) and sensitive (IP- Pakuwon). Key words: physic nut, drought stress, tolerance

Evaluasi Galur Haploid Ganda Pelestari Hasil Kultur Antera untuk Perakitan Galur Mandul Jantan pada Padi Rumanti, Indrastuti A.; Dewi, Iswari S.; Purwoko, Bambang S.; Aswidinnoor, Hajrial
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 1 (2009): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Hybrid rice has been proven to be the key factor to increase food supply in highly populated countries such as China and India. The success has encouraged the government of Indonesia to intensify research and development on hybrid rice using cytoplasmic-genetic male sterility system. The use of good male sterile line is a prerequisite for commercial seed production of hybrid rice. The objective of this research was to evaluate several F1 plants to develop completely sterile cytoplasmic male sterile line (CMS) with good agronomic characters. This research was conducted at screen house of Bogor Agricultural University during dry season (DS) of 2007. Fourty eight F1s, derived from testcross between cytoplasmic male sterile sources with doubled-haploid (DH) maintainer lines, were evaluated in randomized complete design using three replications. Observation was done on pollen sterility, panicle and stigma exsertion, plant height, and tillering ability. The results showed 14 F1s were completely sterile (100 % pollen sterility). They were A-2/H36-3-Ma, A-1/H36-3-Mb, A-2/H36-3-Mb, A-3/H36-3-Mb, A-1/H36-4-M, A-2/B1-1-Mb, A-3/B1-1-Mb, A-1/B1-2-Pa, A-2/B1-2-Pb, A-3/B2-1-M, A-1/B2-4-Pb, A-3/B4-1-Da, A-1/B4-1-Dc, and A-3/B4-1-Dc. They also had early flowering date, averaged from 66 - 90 days after planting (DAP). There were other 14 F1s with stigma exsertion more than 70 % and good panicle exsertion, i.e. A-2/H36-3-Mb, A-1/H36-3-Mc, A-2/H36-3-Mc, A-1/H36-4-M, A-2/B1-2-Pa, A-2/B1-2-Pb, A-3/B2-1-Db, A-1/B2-1-Dc, A-1/B2-1-M, A-1/B2-4-Pb, A-3/B2-4-Pb, A-2/B4-1-Da, A-1/B4-1-Dc and A-3/B4-1-Dc. However, only five F1s had all desirable characteristics as male sterile line candidates, such as 100% pollen sterility, good panicle exsertion, high stigma exsertion, semi-dwarf in plant height and good tillering ability. They were A-1/H36-4-M, A-2/B1-2-Pb, A-1/B2-4-Pb, A-1/B4-1-Dc, A-3/B4-1-Dc. Key words: Doubled-haploid maintainer lines, CMS, pollen sterility, hybrid rice

Keragaman Genetik dan Karakter Agronomi Galur Haploid Ganda Padi Gogo dengan Sifat-Sifat Tipe Baru Hasil Kultur Antera Herawati, Reny; Purwoko, Bambang S.; Dewi, Iswari S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 2 (2009): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The development of new plant type of upland rice in relatively short time can be done by using anther culture technique. The technique has been recognized as a rapid and efficient technology for plant improvement. Plant materials used in this research were 320 s doubled haploid lines derived from anther culture and their 4 parents namely Fatmawati, SGJT-28, SGJT-36 and Way Rarem. Observation was conducted on plant height, number of productive tillers, days of flowering and maturity, length of panicle, number of grains per panicle, number of filled grains per panicle, percentage of unfilled grains, weight of 1000 grains and weight of grains per hill. The result showed that there were broad variations in the agronomic characters of doubled haploid lines. There were 58 upland rice lines can be obtained with new plant type characters (NPT). Several lines showed superior characters. Line P6-105, P3-134, P3-135, P3-175 had productive tiller more than that of parental, P3-160, P3-196, P6-274 had long panicle, number of grain per panicle and low percentage of unfilled grain, P3-135, P6-271, P6-274, and P6-276 had weight of grains per hill. These lines had potential as new plant type of upland rice. Length of panicle, number of grains per panicle, number of filled grains per panicle, and weight of grains per hill had high heritability and wide genetic variability. Key words: Genetic variability, doubled haploid, anther culture, upland rice

Taksonomi Mangga Budidaya Indonesia dalam Praktik Fitmawati, ,; Hartana, Alex; Purwoko, Bambang S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 2 (2009): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The classification of cultivated plants should meet two approaches namely the botanical (classifying based on essential systematic plant characters) and the practical approach (clustering based on the analysis of commercial properties). This study analyzed taxonomy of mango cultivars grown in Indonesia based on morphology and agronomy characters. It obtained 84 recognizable cultivars.They are grouped into eigth main cultivar-groups (e.g. Berem, Madu, Gedong, Golek, Bapang, Arumanis, Kepodang, and Kebo) and eigthteen cultivar-groups. The 'Lalijiwo' cultivars synonym with 'Thaber', 'Tabar', 'Gurih' whereas 'Arummanis' synonim with 'Gadung'. Meanwhile, the cultivar 'Kates277' which is a member of Golek cultivar main group is homonim with the cultivar 'Kates' in Arummanis cultivars main group. Furthermore, the cultivar Nanas93 (one of Madu main group cultivar) that different with the cultivar 'Nanas71' which is categorized as member of Bapang main cultivar group. Key words: Taxonomy of cultivated plant, Indonesian mango, morphology, agronomy characters

Pengaruh Tinggi Pangkasan Batang Utama dan Jumlah Cabang Primer yang Dipelihara terhadap Produksi Minyak Jarak Pagar (Jatropha curcas L.) Raden, Ince; Purwoko, Bambang S.; Hariyadi, ,; Ghulamahdi, Munif; Santosa, Edi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 37 No. 2 (2009): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of this research was to study shoot architecture in relation to growth, increase production and seed oil content through various stem pruning and number of primary branches. This research was conducted using Randomized Complete Block Design with single factor. It consisted of ten treatments, i.e., K=kontrol, T20= height of stem pruning at 20 cm from soil and without control on number of primary branches, T20-2=height of stem pruning at 20 cm from soil and two primary branches, T20-3= height of stem pruning at 20 cm and three primary branches, T30= height of stem pruning at 30 cm and without control on number of primary branches, T30-2= height of stem pruning at 30 cm and two primary branches, T30-3=height of stem pruning 30 cm and three primary branches, T40=height of stem pruning at 40 cm and without control on number of primary branches, T40-2=height of stem pruning at 40 cm and two primary branches, and T40-3=height of stem pruning 40 cm and three primary branches. The results showed that stem pruning increased number of primary branches. The highest seed oil content and seed production was achieved T40 and T30-3 treatments i.e., 323.81 g/plant or 0.810 ton/ha and 320.61 g/plant or 0.802 ton/ha with seed oil yield 244.56 kg/ha and 276.61 kg/ha, respectively. Key words : Jatropha curcas L., seed oil content, pruning, primary branches

Pengaturan Pembungaan Tanaman Manggis (Garcinia mangostana L.) di Luar Musim dengan Strangulasi, serta Aplikasi Paklobutrazol dan Etepon Rai, I Nyoman; Poerwanto, Roedy; Darusman, Latifah K.; Purwoko, Bambang S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 32 No. 2 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of the research was to study the application of strangulation, packlobutrazol and ethephon to stimulate flowering of mangosteen trees. The experiment was conducted from June 2002 to September2 003, located at Farmer's Mangosteen Orchards, Leuwiliang, Bogor. A randomized block design with two factors was used in thisexperiment. The first factor was treatments to stimulate flowering consisted of three levels i.e strangulation (8), (S) application of paclobubtrazol (P) and control (K). The second factor was treatments for dormancy breaking consisted of two levels i.e without ethephon (Eo) and with ethephon (EiJ. Each treatment was replicated four times. The resultshowed that strangulation and application of paclobutrazol were effective in stimulating flowering of mangosteen trees. Those treatments decreased gibberellic acid content and increased total sugar and C: N ratio. Interaction effect was found between treatments to stimulate flowering and ethephon on number of flowers, number of fruits and weight of fruits per tree. The highest fruits weight (2.,50 kg/tree) was obtained on the combination of paclobutrazol with ethephon while the lowest was in control without ethephon( 6.05 kg/tree).Key words: Mangosteen, Strangulation, Paclobutrazol, Ethephon, Flowering;

Co-Authors , Amisnaipa , Hariyadi , Hasnam , Satoto A. S. Abidin Achmad Surkati Agatha Widhi B Ahmad Surkati ALEX HARTANA Aris Munandar Bambang B. Santoso Buang Abdullah D. Wasgito Purnomo Diah Juniarti Dwi Guntoro Dyah Sri Sulistiyani Edi Santosa Fera Santi Magdalena Fitmawati Fitmawati HAJRIAL ASWIDINNOOR Hariyadi3, , I NYOMAN RAI I Wayan Budiastra I. Hanarida I. S. Dewi Ida H. Somantri Ince Raden Indrastuti A. Rumanti Irdika Mansur Iskandar M. Lapanjang Iswari S. Dewi Ketut Suryana Lady Lengkey Latifah K. Darusman Livy W. Gunawan Loyd E. Powell M A Chozin Maya Melati Memen Surahman Muhammad Syakir Munif Ghulamahdi Nurul Khumaida P. Fitradesi Pepi Nur Susilawati Priatna Sasmita R. Poerwanto Ramdan Hidayat Reny Herawati Roedhy Poerwanto Roedy Poerwanto S. Gunadi S. Sujiprihati Sakhidin Sakhidin Semin Semin Slamet Susanto Sri S. Harjadi Sri Wilarso Sri Wilarso Budi SRIANI SUJIPRIHATI Sudarsono Sudirman Yahya Suhirman, Suhirman Syamsiar, Syamsiar Tatiek K Suharsi Trikoesoemaningtyas Yeni Yudhiani Yoga Yuniadi Yusuf L. Limbongan

Title

Found 37 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 37 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 37 Documents
Search