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Growth and Production of Amorphophallus paeoniifolius Dennst. Nicolson from Different Corm Weights Edi Santosa; Nobuo Sugiyama
Indonesian Journal of Agronomy Vol. 35 No. 2 (2007): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (54.976 KB) | DOI: 10.24831/jai.v35i2.1315

Abstract

The effect of different seed corm weight on the growth and production of elephant foot yams (Amorphophallus paeonifolius Dennst. Nicolson) were studied. Two forms of corm with same weight were prepared, i.e., whole corm and vertically sectioned by 1/2. The fresh mass of each whole corm and corm section was the same. Six different corm weights were compared, i.e., 50, 100, 200, 500, 1000 and 2000 g. Growth and development of  elephant foot yam were determined by corm weigth, large seed corm produced larger leaf and fresh mass of daughter corms. On the contrary, number of leaf decreased with increasing seed corm weight. Plants from whole seed corms emerged earlier and they were larger than those from the sectioned corms, irrespective of weight. Plants from small sized whole corm emerged earlier than the larger ones. Dissecting the main bud caused the development of lateral buds, resulted in a delay of leaf emergence. The lower yield obtained by the use of sections might be related to the late emergence leading to shorter vegetative period in the field. In the cultivation, it is recommended to use whole seed corms of 100 or 200 g.   Key words :  Elephant foot yams, tuber crop, Araceae, corm weight, tuberization rate
Effect of Tree Litter Application on Lowland Rice Yield in Bangladesh Kazi Liaquat Hossain; Mohammad Abdul Wadud; Edi Santosa
Indonesian Journal of Agronomy Vol. 35 No. 3 (2007): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (43.731 KB) | DOI: 10.24831/jai.v35i3.1324

Abstract

The effect of tree litters on rice yield (cv. BR11) was evaluated in the study. Four kinds of tree litter, i.e., ipil-ipil or lamtoro (Leucaena leucocephala (Lamk) De Witt), sissoo (Dalbergia sissoo), akashmoni (Acacia auriculiformis) and mander (Erythrina orientalis) were incorporated into the soil 15 days before transplanting at rate of 5 ton/ha supplemented with inorganic fertilizers (83 kg N, 48 kg P205­, 42 kg K20, 10 kg S and 3.6 kg Zn/ha). In the control plots only recommended inorganic fertilizer were applied. Results showed that tree litter application had a significantly positive effect on the yield parameters such as plant height, panicle length, tillers per hill, filled grain and index of 1000-grain weight. Grain yield of plots treated with ipil-ipil, sissoo, akashmoni and mander was 5.61, 4.49, 4.95 and 5.36 ton/ha, and the yield increased over control plots 39.6, 11.7, 23.1 and 33.3%, respectively.  It is worthy to note that addition of tree litter to inorganic fertilizer produced significantly higher yield than inorganic fertilizers solely. Among the tree litter, ipil-ipil and mander had the greatest increase in rice yield, while akashmoni was intermediate and sissoo was the least.   Key words: Agroforestry residues, rice, sustainable agriculture and tree-based cropping
Pengaruh Alelopati Jarak Pagar (Jatropha curcas L.) terhadap Perkecambahan Benih Jagung, Tomat dan Padi Gogo Ince Raden; Bambang S. Purwoko; Edi Santosa; , Hariyadi; Munif Ghulamahdi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (51.651 KB) | DOI: 10.24831/jai.v36i1.1358

Abstract

  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  
Efektivitas Strangulasi terhadap Pembungaan Tanaman Jeruk Pamelo ‘Cikoneng’ (Citrus grandis (L.) Osbeck) pada Tingkat Beban Buah Sebelumnya yang Berbeda Muhammad Thamrin; Slamet Susanto; Edi Santosa
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (48.288 KB) | DOI: 10.24831/jai.v37i1.1393

Abstract

Biannual bearing fruit is a common phenomenon in tropical fruit trees. However, effectiveness of flowering induction on those fruits is still lack of study. The ojective of the research was to study the effectiveness of flowering induction on pummelo of different fruit load on previous year. Field experiment was conducted at farmer's orchad Bantarmara village, Cisarua, Sumedang Region, West Java (300 m above sea level) from August 2007 to April 2008. Experiment was carried out using Completely Randomize Block Design. Experiment was combination of high crop load and less crop load with strangulation position at main stem and primary branches. The results showed that crop load of previous year (higher and less) with strangulation position at primary branches had significant response to the number of  flower clusters, flower buds, bloming flower, fruits formed, and fruit sets as compared to control, when strangulated at primary branches. Nevertheless,  amount of fruit sets, level of greenness leaf and leaf area seened were not determined by fruit load non position of strangulation. This finding implies that fruit load management is an important factor in determining the success of flowering induction using strangulation.   Key words: fruit load, strangulation, pummelo, flowering induction
Simpanan Biji Gulma dalam Tanah di Perkebunan Teh pada Berbagai Tahun Pangkas Edi Santosa; Sofyan Zaman; Intan Dewi Puspitasari
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (65.257 KB) | DOI: 10.24831/jai.v37i1.1394

Abstract

Through understanding on seed bank, tea plantation manager enables to plan better weed control. The objective of the study was to identify seed bank of weeds at different ages of tea plantation after prunning. The study was conducted at Perkebunan Teh Tambaksari, Subang, Indonesia. Soil samples were collected from tea field of different pruning years (TP0-2 months after pruning, TP1-16 months after pruning, TP2- 28 months after pruning, and TP3-40 months after pruning) and then watered regularly and exposed to direct sunshine to stimulate propagule germination. Results showed that seed banks were found in all soil samples, indicated that effectiveness of weed control was low. The highest seed bank was found at TP1. Most seed bank was seed, they were Ageratum conyzoides which dominated field of TP0 (SDR 36.58%), TP1 (35.90%), TP2 (41.79%) and TP3 (24.82%), followed by Borreria latifolia with SDR values were 19.50%, 27.26%, 29.40% and 16.14%, respectively. Some species stored both vegetative and generative propagules such as Cyperus sp. and Cyperus cyperoides with SDR value 20.33 % only dominated at age of TP0. Seed bank at area of TP1 and TP2 had high value of community coefficient, i.e., 77.22%, showed both fields had high similarity. This finding implies that effective weed control increases when the control is conducted before the weeds bear seed, where mostly less than 45 days after emergence. Furthermore, thirteen weeds had no seed bank in the field, indicates that weed problem in tea plantation was composed of seed bank and weed propagules from other sites.   Key words:  Pruning year, seed bank, tea plantation, weed control
Pengaruh Tinggi Pangkasan Batang Utama dan Jumlah Cabang Primer yang Dipelihara terhadap Produksi Minyak Jarak Pagar (Jatropha curcas L.) Ince Raden; Bambang S. Purwoko; , Hariyadi; Munif Ghulamahdi; Edi Santosa
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (92.721 KB) | DOI: 10.24831/jai.v37i2.1409

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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
Pengaruh Jenis Pupuk Organik dan Mulsa terhadap Pertumbuhan Tanaman Lidah Buaya (Aloe vera Mill.) Edi Santosa
Indonesian Journal of Agronomy Vol. 31 No. 3 (2003): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (656.151 KB) | DOI: 10.24831/jai.v31i3.1484

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The objective of this research was to determine source and level of organic matter on growth of Aloe vera Mill Random complete block (RCB) design was applied where two sources of manure i.e. lamb and cow dung and two kinds of mulch i.e. rice husk and sawmill dust were used. The results showed that application of manure significantly increased the plant height and the number of leaf Lamb dung gave better responses than cow dung, here the best level of lamb dung was 1 kg per plant. Effectiveness of manure application was 4 months, afterward need another  application. Mulching did not affect both plant height and number of leaf significantly. Key words: Aloe, Organic manure, Sawmill dust, Rice husk
Produktivitas Genotipe Padi Gogo Adaptif Naungan pada Kondisi Digenangi dan Kering Edi Santosa
Indonesian Journal of Agronomy Vol. 30 No. 2 (2002): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1150.215 KB) | DOI: 10.24831/jai.v30i2.1492

Abstract

Increase in utilization of upland rice tolerant to shade under plantation and commercial timber canopy. demands significant amount of seed become critical. The objective of this research was to study the productivity of shade-tolerant upland rice genotypes under flooded and dried cultivation. Research was conducted in the greenhouse of the Department of Agronomy, IPB, Bogor from September 1998 to March 1999. Random Complete Block (RCB) Design with two factors i.e. flood-dry and 12 genotypes of upland rice, namely Jatiluhur, Dodokan, TB 165E-TB-6, TB 13G-TB-2. ITA247, B7291D-SM-12,  B6926F-TB-l, B9484-F-TB-3, B9266F-PN-7-MR-2-PN-4, TBI77E-TB-30-B-2, B149F- MR-7. and TB35H-MR-3 was used. Genotypes were cultivated in plastic pots containing 10 kg media mix of soil and manure 9: I. Dry cultivation was performed with a two-day interval of watering; while flooding was done as in sawah field. Other maintenance such as weeding and fertilization were applied as in sawah cultivation. Treatments were replicated three times with two pots in each replicate. The result showed that flooding increased the number of tiller by 20% for the genotype B729ID-SM-12 (V6), B9484-F-TB-3 (V8), B9266F-PN-7-MR-2-PN-4 (V9), BI49F-MR-7 (V11), and TB35H-MR-3 (V12), increased biomass of top part 31.29 ± 29.02:% and roots 187. 91 ± 74. 16% for genotype TBI3G-TB-2 (V1), ITA247 (V5), B6926F-TB-1 (V-), B9484-F-TB-3 (V8), B9266F-PN-7-MR-2-PN-4 (V9), and TBI77E-TB-30-B-2 (V10), decreased the shoot root ratio by 53.10 ± 9. 70%; affected the number of productive tiller and the number of panicle 18.47± 51.04%; and increased the productivity up to 111.34 ± 123.19%. Based on a cluster analysis, three groups were proposed. A first group suitable for flooding were Jatiluhur (V1), TBI65E-TB-6 (V3), ITA247 (V5), B6926F-TB-1 (V-), B9484-F-TB-3 (V8). B9266F-PN-7-MR-2-PN-'4 (V9). and TBJ.77E-TB-30-B-2 (V10). A second group not suitable for flooding were Dodokan (V~, B7291D-SM-12 (V6), BI49F-MR-7 (V11), and TB35H-MR-3 (V12). A moderate genotype. TB 13G- TB-2 (V4). performed well in both cultivation methods was in the third group. Key words: Shading. upland rice, Flooding, Dry, Productivity
Respon Agronomi Varietas Padi terhadap Periode Kekeringan pada Sistem Sawah Herman Wafom Tubur; Muhamad Achmad Chozin; Edi Santosa; Ahmad Junaedi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (307.858 KB) | DOI: 10.24831/jai.v40i3.6796

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The objective of this experiment was to identify the growth and production of rice varieties as responses to drought period in low land rice system. Rice plants were grown under plastic house in plots separated by massive walls. Drought periods were treated as main plots, i.e. water was supplied during 3, 6, and 9 weeks after rice transplanting, and control (cultivation without drought treatment). Rice varieties were used as sub plots, consisted of IR64 and Ciherang (low land improved varieties), IPB-3S (new plant type), Menthik Wangi (an aromatic local low land rice), Rokan (a hybrid rice), Way Apo Buru (amphibian type), Jatiluhur and Silugonggo (up land type). Our results showed that drought periods suppressed plant height, tiller number, spikelets length, weight of 1,000 grains, shoot dry weight and harvest index, and increased number of empty spikelets. Interaction between drought periods and rice varieties significantly affected productive tiller number, percentage of plants to flower, and grain weight per hill. Jatiluhur, Ciherang and Way Apo Buru still gave relatively high yields under drought stress indicated that those varieties were relatively tolerant to drought stress; Silugonggo and IPB-3S had medium tolerance to drought stress; IR64, Menthik Wangi and Rokan were the most sensitive varieties. Keywords: drought stress, drought tolerant, improved variety, local variety
Peran Hara N, P dan K pada Pertumbuhan dan Perkembangan Ratun Lima Genotipe Padi , Susilawati; Bambang Sapta Purwoko; Hajrial Aswidinnoor; Edi Santosa
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (276.79 KB) | DOI: 10.24831/jai.v40i3.6820

Abstract

The objective of the research was to determine the roles of fertilizers application in improving rice ratoons. Statistical design used was a factorial randomized complete block design with three replications. The first factor was three levels of fertilizer rate (kg ha-1) i.e. 5 N + 27 P2O5; 45 N + 30 K2O; and 27 P2O5+30 K2O. The second factor was rice genotypes, i.e. Cimelati, Hipa-5 and Rokan varieties, and two lines of rice i.e. IPB106-7-47-DJ-1 and IPB106-F-8-1. The growth and production characters of main crops and ratoon were observed. The results showed that both genotypes and rates of fertilizer affected yield of ratoon. Following application of (kg ha-1) 45 N + 27 P2O5 three genotypes produced the highest ratoon, i.e. IPB106-7-47-DJ-1 and IPB106-F-8-1 lines and Rokan variety. Cimelati and Hipa-5 varieties produced higher number of ratoon with fertilizer rate (kg ha-1) 45 N + 30 K2O. Ratoon production of all genotypes ranged 38.1-56.6% of the main crop. This study clearly demonstrated that N, P and K fertilizer had important roles in increasing yield and yield components of rice ratoon. Keywords: fertilizer, productivity, rice genotypes, rice ratoon
Co-Authors , Hariyadi , Kholidi , Susilawati Abdoellah, Soetanto Abdul Gani Gani Tarigan Abdul Harris Burhan Achmad Taufiq Ade Wachjar Ade Wachjar 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 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 Fattah, Muhamad Zainul Ferdianto Budi Samudra Fifin Nashirotun Nisya Gerson Hans Maure Gunar Widiyanto, Gunar Hajime Nakano HAJRIAL ASWIDINNOOR Heni Purnamawati 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 Kanny, Putri Irene 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 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 Riska sukmawati Rizka Tri Arjuna ROEDHY POERWANTO Rohman, Fadil Rosdiana, Siska Sakti, Ginanjar Pramudya Sandra Arifin Aziz Santun RP Sitorus Sigit Pramono Siska Rosdiana Siti Halimah Slamet Susanto Sobir Sobir Sobir Sobir Soekisman Tjitrosemito Sofyan Zaman Sri Nurdiati Sri Suryo Sukoraharjo SUBOWO GITOSUWONDO Sugiyanta Sulassih, . Supijatno Supijatno Supijatno Susilawati Suwarto Tantra, Aditya Wira Tjahja Muhandri Ulfha Junita Ulinnuha, Zulfa Utami Prawati Wahjar, Ade Wijaya, Aldi Kamal Winarso D. Widodo Winarso Drajad Widodo Yoko Mine Yoko Mine Yoko Mine Yoko Mine Yonny Koesmaryono Yonny Koesmaryono Zulfa Ulinnuha