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E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology)
Published by Universitas Udayana
ISSN : 23016515     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
E-Jurnal Agroekoteknologi Tropika (JAT) adalah peer-reviewed, open access jurnal, diterbitkan oleh Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana. JAT menerbitkan hasil peneitian original dan review artikel dalam bidang Ilmu tanah dan lingkungan, Agronomi, hama dan penyakit tumbuhan, dan arsitektur lanskap. Penulis diharapkan mengimkan karya tulisnya yang belum pernah dipublikasikan, sedang di-review atau sedang dipertimbangkan untuk diterbitkan di jurnal atau media lain secara lengkap. Ruang lingkup JAT mencangkup, tetapi tidak terbatas pada bidang berikut: kimia dan kesuburan tanah, biologi tanah, fisika dan konservasi tanah, manajemen suberdaya lahan, pengendalian hama dan penyakit terpadu, hama tanaman, penyakit tanaman, biopestisida, bioteknologi tumbuhan, agronomi dan hortikultura, benih dan pemuliaan tanaman, ekofisiologi, dan arsitektur lanskap.
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol.3, No.4, Oktober 2014" : 8 Documents clear
Aplikasi Sistem Informasi Geografi (SIG) untuk Pemetaan Akuifer di Kota Denpasar HARIANJA JUITA; R. SUYARTO; I WAYAN NUARSA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.4, Oktober 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT Application of Geographic Information System (GIS) for Mapping of Aquifers in Denpasar City Ground water is the water contained in the soil or rock layers below the soil surface. Water resources derived from groundwater generally directly used to meet the needs of clean water daily. Ground water is used each time would decline both in quality and quantity along with the number of people who exist in an area. The aim of this research is to examine characteristics of aquifer and find out direction of the groundwater flow. Descriptive method selected as the method in this research, which is reads and records forms data to find out types aquifer, aquifer thickness and the permeability of aquifer. Determining the point of wells location is using purposive sampling method and to analyze the aquifer characteristics data likes water quality (eg; temperature, acidity, total dissolved solids), direction groundwater flow, aquifer thickness, aquifer types and the permeability of aquifer using Spline method and IDW (Inverse Distance Weighting). The results of this research are map of temperature, total dissolved solids, pH, aquifer types, aquifer thickness, the permeability of aquifer and groundwater flow. There are poor quality of groundwater in Denpasar area (west, east, north and south area) shows by their temperature and acidity. On the other hand, the total dissolved solids shows good water quality in east Denpasar area only. Depth of the unconfined aquifer ranging from 10 - 40 m (deep) up to > 40 m (very deep), thickness of unconfined aquifer is 30 m (deep) up to > 40 m (very deep), permebility unconfined aquifer are slow, very slow and fast. Depth of confined aquifer start from 40-100 m (deep) up to >100 m (very deep), thickness confined aquifer are 40 m (shallow), 60 m (deep) up to >100 m (very deep), permeability of confined aquifer both slow and fast. Unconfined aquifer and confined aquifer generally are sands, gravel, sandstone, volcanic ash and limestone. Groundwater flow from north to south.   Keyword : Aquifer, Geographic Information System (GIS), Ground water
Identifikasi Mikoriza Abuskula Secara Mikroskopis pada Rhizosfer Beberapa Jenis Rumput-rumputan dan Tanaman Kakao (Theobroma cacao L.) NI KADEK SINTYA DEWI; I GEDE PUTU WIRAWAN; MADE SRITAMIN
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.4, Oktober 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT Identification of Arbuscular Mycorrhiza through Microscopis Methode in Rhizosfer of Several Grass and Cacao ( Theobroma cacao L.) Arbuscular mycorrhiza fungi that live in a symbiotic mutualism with plant roots and helps the absorption of plant nutrients, and also able to live in various places. The study aimed to identifiy arbuscular mycorrhiza through microscopic methode in rhizosfer of several grass and cacao was conducted from December 2013 to March 2014. The method used in this study were spore isolation by wet sieving and root staining techniques. The results showed that arbuscular mycorrhiza spores and structures found in Imperata cylindrica L. are 2 types spores of genus Glomus (Glomales: Glomeaceae) with vesicular and hyphae structures. The presence of spores and structures in Paspalum notatum are Acaulospora (Glomales: Acaulosporaceae) and genus Gigaspora (Glomales: Gigasporineae) with arbuscular, vesicular and hyphae structure. Spores and structures of mycorrhiza found in the Pennisetum purpureum are 3 types of the genus Glomus with hyphae and arbuscular structure. Spores and structures mycorrhiza in the Cyperus rotundus are 1 type spore of the genus Gigaspora and 2 types of spores Glomus with internal hyphae structure. While spores and mycorrhiza structures in the cacao are 2 types spore of the genus Glomus with hyphae and vesicular structures.   Keywords: Glomus, Gigaspora, Acaulospora, Arbuscular Mycorrhiza Structure
Uji Efikasi Formulasi Rizobakteri Pantoea agglomerans GTA24 dalam Mengendalikan Penyakit Rebah Semai yang Disebabkan oleh Sclerotium rolfsii pada Tanaman Kedelai GUSTI AYU KOMANG CANDRA PARWATI; KHAMDAN KHALIMI; WAYAN ADIARTAYASA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.4, Oktober 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT Efficacy Test of Pantoea agglomerans GTA24 rhizobacteria Formulations in Controling Damping off  Disease Caused By Sclerotium rolfsii on Soybean Plants The experiment aimed to determine the effectiveness of the P. agglomerans GTA24 rhizobacteria formulations in controlling damping off diseases. The experiment was conducted in vitro and in greenhouse test. The experiment was a randomized complete blocks with five replications. The treatment consists of four types of P. agglomerans GTA24 rhizobacteria formulations is pellets formula, powder formula, compost formula, and the gel formula. The results showed that the application of P. agglomerans GTA24 formulations significantly inhibited the fungal growth. P. agglomerans GTA24 showed strong inhibitory activity agains    Sclerotium rolfsii on PDYA medium percentage of inhibitory activity about 96,30%. The lowest disease incidence was attained by the treatment of gel formula, in which only 15,56% of the soybean plants were infected.   Keywords : rhizobacteria formulations, damping off disease, soybean plants
Kajian Potensi Bakteri Lumpur Lapindo sebagai Agens Hayati terhadap Pyricularia oryzae dan Agens Biostimulan pada Tanaman Padi ROYAN PRACAHYO; KHAMDAN KHALIMI; GEDE WIJANA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.4, Oktober 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT The Study of Potential of Lapindo Mud Bacteria as Natural Agent Pyricularia oryzae and Biostimulant agent on Rice Rice (Oryza sativa L.) is the staple food of more than 60% of the world’s population. One of the cause for the low productivity of rice in indonesia is the occurrences of rice blast disease caused by Pycularia oryzae . This study was done to evaluate the potential use of  bacteria isolated from Lapindo mud as bio-control  agents  against  P. oryzae and bio-stimulant agents in rice plant. The result showed that three isolate of  bacteria isolated from Lapindo mud namely AA1, 20M14, and ZB11 significantly (P<0,05) inhibited the growth of  P. oryzae on Potato Dextrose Agar (PDA) medium with  inhibitory  activity  varied  85,07%, 86,58%, and 70,82%. Ten isolates of  bacterial  isolated from Lapindo mud significantly improved the growth of rice seedling. In which the plant heigth, number of root, content of chlorophyll in the leaf, number of  lateral  root  length of root, and the fresh and dry weight of plant significantly (P<0,05) higher on treated plant when compared to control. This is result suggested that three isolates of bacteria isolate from Lapindo mud can be further developed as bio-control agents to inhibit the P. oryzae growth and ten isolates of bacteria isolated from Lapindo mud can be used as bio-stimulan agents.   Key words: lapindo mud bacteria, Pyricularia oryzae, rice
Perubahan Titik Muatan Nol dan Muatan Negatif Abu Terbang Batubara akibat Penambahan Kotoran Ayam dan Waktu Inkubasi AGUS HERMAWAN; SABARUDDIN SABARUDDIN; MASRI MASRI; RENIH HAYATI; WARSITO WARSITO
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.4, Oktober 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT Changes in Point of Zero Charge and Negative Charge of Coal Fly Ash due to Chicken Manures Addition Fly ash, coal combustion residue of thermal power plants, has been regarded as a problematic solid waste all over the world. Due to the environmental problems created by large-scale fly ash generation, efforts are being made to recycle these materials, such as to improve soil fertility as an ameliorant. In the present study, the possibility to improving the status of point of zero charge (PZC) and negative charge in fly ash (FA) and chicken manure (CM) mixtures was investigated. Fly ash was mixed with chicken manure composition of 0, 25, 75, and 100 % FA (w/w basis) and incubated for 15, 30, 45, and 60 days. Treatments arranged in factorial completely randomized design with 3 replicates. The results showed that the compositions of FA-CM and incubation period significantly affect the status of TMN, negative charge, P sorption and available-P. The mix of 50% FA with 45 days incubation tend to have a lower PZC and P sorption and higher negative charge and P-available. This composition could be use as an amelioran to improve the soils chemical properties in terms to decrease PZC and increase negatif charge, and it is necessary for further research.   Keywords: chicken manure, coal fly ash, point of zero charge, negative charge
Identifikasi Fungi Mikoriza Arbuskular Secara Mikroskopis pada Rhizosfer Tanaman Alang-Alang (Imperata Cylindrica L.) di Desa Sanur Kaja ROMAULI THERESIA NAINGGOLAN; I GEDE PUTU WIRAWAN; I GEDE KETUT SUSRAMA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.4, Oktober 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT Identification of Mikoriza Arbuskular Fungi in Microscopic the Rhizosphere of Reed (Imperatacylindric L.) in Sanur Kaja Village.   Mycorrhiza is a form of symbiosis between the fungus with a high level of plant (vascular plants, Tracheophyta), especially on the rooting. There is also a fungus with the other symbiotes, but the term mycorrhiza are typically for symbiotic plant roots which infect by fungus. This research aims to know the diversity of the genus or species of  mycorrhiza fungi arbuskular on the rhizosfer plant reeds in the village of Sanur Kaja, and to know whether or not there was colonization of mycorrhiza fungi arbuskular on the net root crops the reeds in the village of Sanur Kaja. The results of this research show that the symbiotes spores in the rhizosfer plant reeds is the genus Glomus multicaule spores, Glomus ambisporum, Acaulospora foveata, Gigaspora gigantae. Analysis on the plant roots mycorrhiza colonization reed showed a spherical structure called vesikular, while arbuskular is a structure on the hypha branches that resemble haustorium. (forming the pattern dikotom).   Key words: Acaulospora sp, Gigaspora sp, Glomus sp.
Isolasi dan Identifikasi Fungi Mikoriza Arbuskular (Fma) secara Mikroskopis pada Rhizosfer Tanaman Jeruk (Citrus sp.) di Desa Kerta, Kecamatan Payangan, Kabupaten Gianyar I WAYAN SUAMBA; I GEDE PUTU WIRAWAN; WAYAN ADIARTAYASA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.4, Oktober 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT Isolation and Identification of Arbuscular Mycorrhizal Fungi (AMF) by Microscopic (AMF) in Rhizosphere of Citrus Plant (Citrus sp.) in Kerta Village, Payangan District, Gianyar Regency Arbuscular Mycorrhizal Fungi (AMF) is a group of organisms from fungi that describes a form of mutualism between symbiotic fungi and plant roots. AMF has great potential as a biological fertilizer because the microorganism which has a very important role in facilitating the absorption of nutrients in the soil to increase plant growth, in addition AMF also function as a biological barrier against pathogen that infect the roots, increasing the availability of water for plants to grow and improve hormone boosters. The purpose of the study was to determine the types of AMF that exist in the rhizosphere of citrus plant and determine the presence of infection by the AMF in the citrus plant roots in the  village of Kerta. The results of the isolation and identification of AMF spores in the rhizosphere of citrus plants in the village of Kerta found 14 different types of AMF spores. This study found 7 type of Glomus, 5 types of Gigaspora and 2 types of Acaulospora. Those types were determined by using the characteristic of their spores. Observations on root finding that the AMF  infection in the form vesicles and arbuscular structures. Keywords : Arbuscular Mycorrhizal Fungi, Glomus, Gigaspora, Acaulospora, Vesicles and Arbuscular.
Pengaruh Penggunaan Jaring Berwarna Terhadap Kelimpahan Serangga Aphis gossypii pada Tanaman Cabai Rawit (Capsicum frutescens L.) NYOMAN AYU TRISNA ARI UTAMI; I NYOMAN WIJAYA; I KETUT SIADI; I DEWA NYOMAN NYANA; GEDE SUASTIKA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.3, No.4, Oktober 2014
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT Effect of Barier Colored Nets to Abundance of Aphis gossypii on Cayenne Pepper (Capsicum frutescens L.) Cayenne pepper (Capsicum frutescens L.) is a plant that has a high economic value and has a many of uses that as seasoning at household, as an ingredient in various food processing industries and the manufacture of pharmaceuticals. Currently chili productivity in Indonesia is still low therefore needs a national chili can not be optimally. One reason is the insect infestation of  A. gossypii are a double role as pests and disease vectors. The use of red and white netting barier around planting chili is one of the pest control management that is environmental friendly. The purpose of this study was to determine the role of red-and-white nets barier in protect the entry of A. gossypii in chilli planting area. There are three treatments were tested using a red netting, white netting and planting without the use of nets. The results showed that the use of red and white nets can reduce insect populations of A. gossypii on peppers planting area. Average of the highest populations of A. gossypii on treatment without a net, then the white netting treatment and lowest in the red, so that the use of red nets can be used to reduce the population of A. gossypii on chilli crop.   Keywords: Chilli pepper , A. gossypii, colored nets

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