Jurnal Agrista
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Penyaringan Ketahanan Jalur Haploid Ganda Padi Gogo Hasil Kultur Antera Terhadap Penyakit Blas Daun
No full textScreening of Doubled Haploid Lines Derived from Anther Culture of Upland Rice to Leaf Blast DiseaseABSTRACT. Rice blast disease caused by Pyricularia grisea (cooke) Sacc, is one of limiting factors to increase upland rice production. Many resistant varieties have been developed, but they have become susceptible within a few years after their release. Breeding for blast disease resistance should be done continuously. This study was conducted in Laboratory and Screenhouse at ICABIOGARD, Bogor. Preparation of rice seedlings and inoculums, inoculation technique and scoring system were done according to standard procedures established by IRRI. The evaluation of doubled haploid lines showed that SGJT3, SGJT16, SGJT28, SGJT29, SGJT34, SGGM5, SGGM8, GRGM9, and GRJT12 lines were resistant to leaf blast disease race 173, 033, and 001
Keragaman Jalur Harapan Kedelai di Lahan Pasang Surut
No full textPerformance of Several Soybean Promissing Lines Grown Tidal Swamp AreasABSTRACT. Jambi soybean is one the soybean production centers of tidal swamp areas. This trial was aimed at evaluating of several soybean promising lines and selecting the most adaptable to tidal swamp growing areas in Jambi Province. There were 12 promising lines and 4 control varieties tested were G100H/SHR-60-38, SHR60/G100H-70, SHR60/G100H-75, G100H/TGM-D-1-3,G100H/TGM-D-1-16, MYP/G100H-D-2, and MYP/G100H-D-6. The control varieties were Wilis, Kaba, Anjasmoro, and Tanggamus. The trial was located at farmers field at Desa Bandar Jaya, Kecamatan Rantau Rasau, Tanjung Jabung Timur District, Jambi Province frol April to September 2008. The crop was grown at standard cultural practices for soybean with planting distance 40 by 15 cm and two seed per hole. Variables collect were germination rate, days to flower, plant height, days to maturity, number of productive branches, percentage of fertile seeds, one hundred seed weight, yield, pest, and disease infection. Result showed that all of tested lines and varieties had fairly good adaptation at tidal swamp growing areas. There were two lines which gave yield above 2 t/ha, namely G100H/SHR-60-38 (2.10 ton ha-1) and G100H/SHR60-34 (2.04 ton ha-1). Yield of these line is comparable to yield of control variety Tanggamus (2.07 ton ha-1). The two lines have better agronomic traits of compared to Tanggamus, namely bigger seeds and mature earlier
Pengaruh Sistem Tanam dan Pemupukan N, P. Dan K terhadap Sifat Fisika Tanah dan Hasil Beberapa Tanaman Palawija pada Lahan Terkena Tsunami
No full textThe Effects of Some Cropping Systems and N, P, K Fertilizer to Physical Properties of Soil and Land Equivalent Ratio at Tsunami Affected LandABSTRACT. The aim of study to know the effects of some cropping systems and N, P, K fertilizer as well as the interaction of both factors to improve soil productivity and land equivalent ratio at tsunami affected land in Aceh Besar, Indonesia. The experimental design was Block Randomized Design with two factors and two replications. The first factor was cropping systems; those were maize monoculture, green bean monoculture, groundnut monoculture, maize-green bean intercropping and maize-groundnut intercropping. Then the second factor was level of N, P, K fertilizer, those were control, low dose (90 kg ha-1 N, 35 kg ha-1 P2O5, 20 kg ha-1 K2O) and high dose (180 kg ha-1 N, 70 kg ha-1 P2O5, 40 kg ha-1 K2O). The observation was done for physical properties of soil and land equivalent ratio. The result showed that the lowest soil weight was obtained from maize-green bean intercropping and maize groundnut intercropping. The highest soil permeability was found in maize-groundnut intercropping. Maize-green bean intercropping using high fertilizer dose gave the highest land equivalent ratio (1,96)
Uji Formulasi Pupuk Beryodium Terhadap Kandungan Yodium Dan Hasil Tanaman Pada Beberapa Jenis Tanaman Di Daerah Endemik Gondok
No full textTest of Iodine Formula Fertilizers to Plant Yield and Iodine Content of Crops in Goiter Endemic AreaABSTRACT. The research aims to get iodized fertilizer formula which is capable to improve iodine rate in crop that lasted from May to September 2007. The field experiment was conducted in Baturiti, Tabanan Regency. The formula tested of iodized fertilizer represents field experiment using one factor simple randomized completely block design (RCBD) by using 15 fertilizer formulas combination treatment. Iodized fertilizer formulas of which main material is KI as source of iodine was combined with fertilizer of Urea, ZA, and phonska as source of nitrogen. Each formula was added which organic fertilizer, such as Kascing, Compost, cow manure, and chicken manure. Fertilizer doses used as a treatment was 10 kg I, 138 kg N, 60 kg P, 60 kg K, and 5 ton organic fertilizer ha-1. Generally, iodized fertilizer formulas that was used as a treatment could improve iodine content in crops. There were no significant influence among the iodized fertilizer formulas to crop iodine content and plant yield, except it was compared to crops iodine content and yield which was without treatment (control). The iodine content in crop increased to 500-700% with iodized fertilizer formulas. After being given fertilizer dose treatment 10 kg I, 138 kg N, 60 kg P, 60 kg K, and 50 ton organic fertilizer ha-1, iodine content of each crop are as follows mustard greens 514.57-539.36 g kg-1, cabbage 527.19-545.10 g kg-1, cassava leaf 445.40-458.34 g kg-1, and corn grain 220.53-223.18 g kg-1, respectively
Pengembangan Metode Prediksi Produksi Air DAS untuk Sungai-sungai Utama di Aceh
No full textDeveloping Prediction Method of Watershed for Main Rivers in AcehABSTRACT. The conversion of rural land to urban land usually increases erosion, discharge and volume of storm runoff in watershed. It also causes other problem that effect soil and water. An urban or urbanizing watershed is one in which impervious surface cover or will soon cover a considerable area. Impervious surface includes roads, side walk, parking lots and building. Natural flow paths in the watershed may be replaced or supplemented by paved gutters, storm sewers or other elements of artificial drainage. Hydrologic studies to determine runoff and peak discharge should ideally be base on long-term stationary stream flow records for the area, such records are seldom available for small drainage areas. Even were they are available, accurate statistical analysis of them is usually impossible because of the conversion of land to urban uses during period of record. It therefore is necessary to estimate peak discharge with hydrologic models based on measurable watershed characteristics. Only through understanding of these characteristic and experience in using these models can be make sound judgments on how to alter model parameter to reflect changing watershed conditions
Pertumbuhan In Vitro dan Ex Vitro Tunas Mikro Tanaman Nilam Aceh (Pogostemon cablin Benth.) dengan Perlakuan Berbagai Konsentrasi Sukrosa dan Arang Aktif
No full textIn Vitro and Ex Vitro Growth of Plantlet of Patchouli (Pogostemon cablin Bneth.)ABSTRACT. The objective of this study was to evaluate the effect of sucrose concentration and activated charcoal on the growth shoot and root in vitro and ex vitro of nilam Aceh (Pogostemon cablin Benth.). Explants for this study were 1 cm in length with 4 leaf, which were derived from sterile shoot culture. The treatment for were cultured on MS basal medium supplemented with sucrose and activated charcoal. The treatment for this study was the concentration of activated charcoal consisting of three levels: 0 (0%), 10 (1%), 20 (2%), 30 (3%), 40 g L-1 (0.2%). Sucrose concentration of 3% without activated charcoal resulted in the good response based on the number of axillary shoots (2,22 shoots per explants), the length of shoot (5,05 cm), the number of leaf (17,76 leaves per explants), the green leaf level (23,01), the survival shoot (93,33%), the number of root (15,33 root per explants) and the length of root (1,23 cm)
Efek Inokulasi Cendawan Mikoriza Arbuskular Indigen dan Sistem Olah Tanah Terhadap Keefektifan Mikoriza, Komponen Hasil, dan Hasil Padi Gogo (Oriza sativa L.) pada Ultisols
No full textEffect of Inoculation of Indegenous Population of Arbuscular Mycorrhiza Fungi and Tillage Systems of Mycorrhiza Effectiveness, Yield Components, and Yield of Upland Rice (Oryza sativa L.) on UltisolsABSTRACT. The field experiment was conducted to study the growth characteristics, agronomy characteristics, and yield of upland rice on ultisols with various dosages of AMF inoculants on three tillage systems. The experiment was carried out Kampung Baru village, Bandar Lampung City from April until August 2005. The experiment used a spilt plot pattern in randomized block design. The main plot was soil tillage systems with consisted of three levels, those were intensive tillage, minimum tillage, and no tillage; and sub plot was AMF inoculants dosages with consisted of four levels, those were 0, 6.0, 13.0, and 19.50 ton ha-1. The result of experiment showed that tillage systems and AMF inoculants affected produces the highest yield for rice, and this yield depend on tillage systems. The highest yield of rice was 3,559.03 g 8m-2 obtained of optimum dosage 13 ton ha-1 AMF inoculants in minimum tillage
Komunitas Mikrofungi pada Lapisan Horizon Serasah Acacia mangium
No full textMicrofungal Community on Litter Horizon Layer of Acacia mangiumABSTRACT. Fungal diversity on litter horizon layer of Acacia mangium were investigated to examined fungal species and fungal community on each litter horizon layer, and also to examined relationship between organic content of litter and fungal community. Twenty two species were isolated from three litter horizon layer with dilution method. Total fungal population on five years old A. mangium standing was higher than two years old, whereas on logging former area was low. Total fungal population on standing two and five years old were highest on L layer follow by F and H layer, but on logging former area were highest F layer followed by L and H layer. Aspergillus was dominate on H layer in almost of sampling collection area, beside that Aspergillus and Penicillium were found also on L and F layer. Generally L and F layer dominated by Sp7, Sp5, Sp20, and Sp22. The highest diversity indice on two years old standing was found at different layer.; L and H on health and Genoderma attacked standing, whereas on standing five years old, highest diversity indices was found at L layer, but on logging former area highest diversity indices was found at H layer
Uji Daya Ketahanan Beberapa Varietas Cabe Merah (Capsicum annum L.) Terhadap Penyakit Antraknose (Gloeosporium piperatum Ell. et. Ev.)
No full textTesting of Some Varieties to Antracnose Diseases (Gloeosporium piperatum Ell. et. Ev.)ABSTRACT. One of the limiting factors to develop chilly in Indonesian is antracnose disease. This fungi attacked either young or mature of pod chilly. It was caused by Gloeosporium piperatum. This study were carried out in green house, Faculty of Agriculture, University of North Sumatera. The objective of this research is to find the resistant varieties to antracnose disease and high yield performance. This study arranged in Randomized Block Design (RBD) with 3 replications, respectively. The result showed that varieties King, TM-999, Kingehili, and Taro were more resistant to antracnose disease. While, Northredstar expressed slightly resistant, Taro, Northrestar, King, Kingehili dan TM-999, produced the highest, while Laris produced the lowest yield
Kompatibilitas Spodoptera litura Nuclear Polyhedrosis Virus (SLNPV) dengan Ekstrak Gadung Racun (Dioscorea hispida Denst) Terhadap Mortalitas Larva Spodoptera litura Fab.
No full textCompatibility of Spodoptera Litura Nuclear Polyhedrosis ViruS (SlNPV) With Tropical Yam (Dioscorea hispida Denst) Ekstract on Larvae Mortality Spodoptera litura Fab.ABSTRACT. Spodoptera litura is a polyphagus and primery pest on many plants. This insect can be infected by nuclear polyhedrosis virus (NPV) and tropical yam was knowingly capable of controlling the insect. The research was aimed at finding an effective concentration of combination of SlNPV and tropical yam extract on mortality of S. litura larva. The research was conducted in Plant Pest Laboratory of Plant Pest and Disease Departemen, Agriculture Faculty, Syiah Kuala University. The experiment applied a completely randomized design (CRD), consisting of six treatments and four replications. The treatment were in SlNPV concentrations of 0, 3x105, 3x106, 3x107, 3x108, and 3x109 polyhedra inclusion body/ml respectively, combined with poisonous for gadung extract in concentration of 120 ml L-1. Data were analyzed by analysis of variance and followed by Duncan Multiple Range Test (DMRT) at level of 0,05. The result showed that application of combination of SlNPV and tropical yam extract was effective and compatible in controlling S. litura. In general, mortality of S. litura was significantly different than control. Mortality of S. litura at all treatments of concentration except S1 and S0 were 100 per cent at 9,8,8, and 7 day after application (DAA). Average of the fastest larvae mortality was 5,46 days given by 3x109 polyhedra inclusion body ml L-1 and the longest was 7,38 days given by control. Treatments of combination of SlNPV and tropical yam extract at concentration of 3x107, 3x108, and 3x109 was compatible and effective in controlling S. litura larvae with mortality level of 85,95, and 100 per cent at 7 DAA, respectively