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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Hortikultura Indonesia (JHI) Forum Pasca Sarjana Microbiology Indonesia Jurnal Ampere Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Menara Perkebunan

Sudirman Yahya

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Author-ID : 435276

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Medicine & Pharmacology

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Tanggap Pertumbuhan dan Hasil Cabai (Capsicum annuum L.) terhadap Inokulasi Fungi Mikoriza Arbuskula pada Tanah Ultisol D. Wasgito Purnomo; Bambang S. Purwoko; Sudirman Yahya; Sriani Sujiprihati; Irdika Mansur; , Amisnaipa
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): Buletin Agronomi
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

Perbaikan Pertumbuhan dan Kualitas Tanaman Lidah Buaya di Tanah Gambut dengan Aplikasi Mikoriza Arbuskula dan Pemupukan Iwan Sasli; Sudirman Yahya; , Sudradjat; Yadi Setiadi; , Sudarsono
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 3 (2008): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This research was aimed at studying the effectiveness of mycorrhiza, inorganic and organic fertilizer (fish and shrimp waste) on growth, yield and quality of Aloe in peat soil. The study was conducted on peat area, North Pontianak, West Kalimantan. Mycorrhizal application levels (without mycorrhiza, Mycofer and mycorrhizal from pineapple's rhizosphere) were as main-plot. The inorganic fertilizer (composition of N:P:K:Mg) rates (without inorganic fertilizer; 5 : 4 : 7.5 : 2.5 g/plant; 10 : 8 : 15 : 5 g/plant; and 20 : 16 : 30 : 10 g/plant) were as sub-plot. Organic fertilizers: (fish; shrimp; fermented fish; and fermented shrimp wastes) were as sub-sub plot. The observed variables were: leaf width, leaf length, leaf fresh weight, plant dry weight, and nutrient uptake (N, P, K, Mg). The results showed that mycorrhizal application improved growth performance and increased N, P, Mg uptake. The best plant growth performance was achieved by N : P: K : Mg =10 : 8 : 15 : 5 g/plant and fermented shrimp waste treatments. The highest N, P, K, Mg nutrients uptake was achieved by application of fermented organic fertilizer. Combination of mycorrhiza from pineapple's rhizosphere with fermented fish and shrimp waste resulted in higher amino acids content compared to standard cultivation of Aloe vera Center in Pontianak. Key words: Aloe vera, arbuscular mycorrhiza, inorganic fertilizer, organic fertilizer

Kejut Tanam Cara Pindah Cabutan pada Pembibitan Kelapa Sawit Sudirman Yahya; Awilham Manurung
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 30 No. 1 (2002): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

To find out the possibility of long distance transplanting from the pre to main nursery of oil palm, a research had been conducted to study the effect of bare-root (soiless) and delayed transplanting on seedling growth. The research was a two factor factorial experiment, seedling age of 2 and 3 months, and 5 level transplanting times: conventional (direct planting), bare-root and delayed-transplanting for 1, 3, 5, and 7 days. The experiment was arranged in a randomized complete design. The results indicated that 95 - 100% of the seedlings with bare root and delayed transplanting were successfully survive and continuous to grow. Two month old seedlings were able to overcome the transplanting shock better than three month old seedlings. The seedling of bare-roots and delayed- planting for up to 7 days, still performed a normal growth and there was no significant difference among time of delayed-plantings. The seedlings of delayed transplanting grew two weeks later than the conventional transplanting Key words: Transplanting shock, Bare-root method, Delayed planting.

Pola Kerontokan Buah Tiga Kultivar Mangga , Sakhidin; Bambang S . Purwoko; Roedhy Poerwanto; Slamet Susanto; Sudirman Yahya; Ahmad S. Abidin
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

Information on the pattern of fruit drop of mango is required to determine the appropriate method and time in reducing fruit drop. By this methodf, fruit retention or number of harvested fruit of mango can be increased.The aim of this research was to determine the pattern of fruit drop of Gadung 21, Manalagi 69 and Golek 3 I . The results of this researchs howedt hat the pattern of fruit drop of Gadung2 1, Golek 31 and Manalagi 69 was similar. All cultivars I showed that there was one peak (the highest number of fruit drop) in fruit drop. It occurred at 6 days after anthesis (DAA). After 24 DAA, the number offruit drop was constant, namely near to zero. It occurred until harvest.Key words: Mango, Fruit drop, Fruit set

Respon Beberapa Genotipe Kedelai Terhadap Tingkat Cekaman Kekeringan Tanah Ultisol , Hapsoh; Sudirman Yahya; T. M. H. Oelim; Didy Sopandie
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 32 No. 3 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This research was aimed to find out the tolerant and susceptible soybean genotypes to drought stress. Twenty two genotypes were tested on three levels of drought stress, based on soil moisture conditions: 80% of field capacity (FC ), 60% FC and 40% FC. The experiment was conducted in plastic house at the experimental field of Meteorological Station, Sampali, Medan, from February to May 2000. The results show that increasing on the severity of drought caused significantly reduced growth and yields, which indicated by the reduction on shoot dry weight, stem diameter, filled pod number, seed number/plant and seed dry weight. The level of growth and yield reductions varied 1 among genotypes. The highest variation was shown at the drought level of 60% FC. Sindoro and Lokon were selected as tolerant and susceptible genotypes, consecutively. It was concluded that the adaptation of tolerant plants strongly related to their ability to improve the root system and to reduce the transpiration surfaces. Key words: Soybean, Drought, Tolerant, Susceptible

Hubungan Antara Penggenangan Dini dan Potensi Redoks, Produksi Etilen dan Pengaruhnya terhadap Pertumbuhan dan Hasil Padi (Oryza sativa) Sistem Tabela IGK. Dana Arsana; Sudirman Yahya; A. P. Lontoh; H. Pane
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 31 No. 2 (2003): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The research was conducted at the Rice Research Center, Sukamandi and at the Biotechnology Research Center,Bogor. A two factors factorial experiment was arranged on Split Plot Design, where three levels of submerging: saturated, 5 and 10 cm in depth were assigned as the main plot and three lowland rice genotypes: IR 64, S. 3254-29-21-2 and S. 3382-2d-16-3 lines as subplots. The results indicate that submerging revealed a significant effect on increasing the redox potential, pH, ethylene production, and yield, however decreasing weed infestation. Almost there was no significant difference among three genotypes on their ethylene, growth and yield, and also on their responses to the submerging treatment. Furthermore, submerging at 5 cm depth increased yield by 110 kg ha-I, or about 1.5 percent compared to just saturated condition. On the other hands, submerging at 10 cm depth increased yield by 612 kg-I. In term of varieties, the promising lines of S,3254-29-21-2 and S.3382-2d-16-3 did not prove to have a difference with ' IR 64, in terms of their tolerance to early submerging condition. , " Key words: Submnerging, Redox potential, Ethylene, Direct sfeeding system

Peranan Mikoriza VA, Rhizobium dan Asam Humat pada Pertumbuhan dan Kadar Hara Beberapa Spesies Legum Penutup Tanah M. Zulman Harja Utama; Sudirman Yahya
Jurnal Agronomi Indonesia (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

The utilization of acid mineral soil often faces the problem of Al toxicity and low available P. The efforts to improve root function and neutralize the effect of high available Al are becoming important for increasing the growth of legumes, particularly as the cover crops at the plantation on acid soil. This research was aimed to find the effect of VA mycorrhyza inoculation, rhizobium, and humic acid on the growth and nutrient content of four different legume species. It was a three factor factorial experiment arranged in a completely randomized design with three replications. The first factor was four legume species: Calopogonium mucunoides, CaloPogonium ceurelieum, Centrosema pubescens and Puerari iavanica the second factor was four different inoculants: none (M0), MVA (M1), rhizobium (Mz), MVA + rhizobium (M3); the third factor was two rates of humic acid application: without (Ho) and with humic acid (H1) The results proved the positive effect of those three factors on the growth of shoot and roots. The responses of root growth on microorganism inoculations and humic acid were different among the legume cover crop species. The role of humic acid was significantly better if there was a synergism between MV A and rhizobium. Key words: Mycorrhyza, Rhizobium, Humic acid, Legume cover crop

Kompetisi Tanaman Jagung dan Ubikayu dalam Sistem Tumpang Sari , Suwarto; Sudirman Yahya; , Handoko; Muhammad Ahmad Chozin
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 33 No. 2 (2005): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Intercropping system of maize and cassava has been practiced widely by Indonesian farmer on dry land. Competition between the plant will happen in the system. Field experiment to understand about the competition has been conducted. Field experiment of growing maize (Arjuna, Pioneer 4, and Cargill 9 in various planting densities) and cassava (Adira 1) was conducted for monoculture and intercropped plants. Intercropped cassava increased intraspesific competition of maize. Yield of maize variety of Arjuna, Pioner 4, and Cargill 9 decreased by about 9.7%, 6.7%, and 16.9% respectively. Maize also reduced growth and yield of cassava. When intercropped with Arjuna, pioner 4, and Cargill 9 at the highest density (80 000 plants ha-1), yield of cassava tuber decreased by about 40.6%, 43% and 64.3%, respectively. However, the intercropping still gave a better land productivity, where land equivalent ratio (LER) was larger than 1.0. Key words: intercropping, competition, maize, cassava

Efficiency of Watering on Cacao Seedling Inoculated with Mycorrhiza Yeni Lucia; Sudirman Yahya; M. Yahya Fakuara
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 26 No. 1 (1998): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The use of mycorrhiza-plantation crop association has not been widely applied, due to lack of information on the positive effect of the association on the tree crops. The plastic house study was established to evaluate the effect of inoculation of mycorrhiza fungi on the watering efficiency of cacao seeding. Four inoculation treatment of mycorrhiza fungi: without inoculant (control), endomycorrhiza (Gigaspora margarita), ectomycorrhiza (Scleroderma columnare) and double inoculant of both species, were combined on factorial arrangement with four rates of watering interval: once of every 1, 3, 5, and 7 days. Inoculation significantly improved seedling growth as shown by plant height, leaf area and dry shoot weight compared to control treatment. Double inoculation had the best result, followed by endomycorrhiza and ectomycorrhiza, consequtively. Inoculation also significantly increased watering efficiency on cacao nursery as many as 2 to 4 times compared to control and shortened the time of nursery period as long as one month.

Co-Authors , Amisnaipa , Handoko , Sakhidin , Sudradjat . SUBRONTO A. P. Lontoh A. S. Abidin Ahmad S. Abidin Alex Hartana Ali Nurdin Amperawan Amperawan Aslina Putri Nunyai ASMARLAILI SAHAR Astuti Kurnianingsih Awilham Manurung Bambang S . Purwoko Bambang S. Purwoko Bambang Sapta Purwoko Chairani Hanum Chairani Hanum D. Wasgito Purnomo Desta Wirnas Diana Sofia Hanafiah Didy Sopandie Dwi Asmono Edi Guhardja Edi GUHARJA Fidiansyah, Arief GEDE WIJANA H. Pane HAJRIAL ASWIDINNOOR HAPPY WIDIASTUTI Hapsoh Hiskia Simanjuntak Humoen, Maria Imelda IGK. Dana Arsana Ignatius Harry Tri Pambudi Irdika Mansur Iwan Sasli Komaruddin Idris M. Yahya Fakuara M. Zulman Harja Utama Marenda Ishak S MEITY SURADJI SINAGA MUHAMMAD AHMAD CHOZIN NURITA TORUAN-MATHIUS Nurmi . Nurmi Hafid Oteng Haridjaja R. Poerwanto Roedhy Poerwanto Sabilal Rasyad Sakhidin Sakhidin Sitanala Arsyad Slamet Susanto Sofyan Zaman Sri Wilarso Budi Sriani Sujiprihati Sudarsono Sudradjat Supijatno Suryo Wiyono Suwarto Suwarto Suwarto Suwarto T. M. H. Oelim TEUKU MUHAMMAD HANAFIAH OELIM Teuku Tajuddin Trikoesoemaningtyas Wahju Q. Mugnisjah Wahono Sumaryono Wahyu Hidayat Widiatmaka Yadi Setiadi Yelli Sofiana Yeni Lucia YENNI BAKHTIAR

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