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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 468 Documents
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Aplikasi Sistem Informasi Geografis (SIG) Untuk Kajian Fluktuasi Muka Air Tanah dan Karakteristik Akuifer di Kecamatan Denpasar Barat NI LUH AYU DANA LESTARI; NI MADE TRIGUNASIH; WIYANTI WIYANTI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.3, Juli 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

The Application of Geographic Information System (GIS) for Study of Groundwater Fluctuations and Characteristics of Aquifers at West Denpasar District Communities that have not been served by PDAM as much as 47.62%, use ground water to fulfill their clean water needs. The purpose of this study was to determine the distribution of dug wells, distribution of groundwater surface, fluctuations, flow direction and characteristics of aquifers in West Denpasar Subdistrict. This research was carried out by descriptive quantitative method. Analysis was carried out from survey data by using ArcGIS software. The results showed that the highest number of dug wells was found in Pemecutan Klod Village (31,25%). Groundwater surface depth in the dry season was 84.38% classified into 0-5 m class and in the rainy season 90.63% also classified as 0-5 m class too. Almost all of the southern West Denpasar Subdistrict has 0-5 m fluctuations. Groundwater in the West Denpasar Subdistrict is predicted to flow to the South, Southeast and Southwest. There are two types of aquifers in West Denpasar Subdistrict that is shallow aquifers and deep aquifers. Shallow aquifers are at 2-20 m depth with a maximum thickness of 18 m and are composed of passive and breccia material. Deep aquifers are found at 12-24 m depths with a minimum thickness of 12 m and are composed of passive and tufa material. It is estimated that both types of aquifers are good aquifers.
Pengaruh Konsentrasi Pupuk Cair (Mikroba Fungsional Tahan Salin) Terhadap Perkembangan Stek Daun Begonia rex “Silver Circle” I PUTU AGUS HENDRA WIBAWA; I NYOMAN LUGRAYASA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.2, April 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

The Effect Of Liquid Fertilizer Concentration On Growths Of Leaf Cuttings Begonia Rex "Silver Circle" Begonia is one of the large genera in the Angiosperm group with asymmetrical leaf characteristics that are very suitable for ornamental plants. "Silver Circle" is the most popular type of Begonia rex. To ensure the availability of Begonia plants in large quantities, there is a need for propagation and cultivation. The success of plants propagation by cuttings is influenced by various factors, namely the type of cuttings and environmental factors including temperature and light humidity and nutrients from the growing media. The quality of planting media can be improved by functional microbial liquid fertilizer. Liquid fertilizer containing microbes functional can produce nutrients and growth hormones that can support plant growth. This study aims to determine the effect of liquid fertilizer concentration given, and also to determine the optimal liquid fertilizer concentration on the growth of B. rex leaf cuttings "Silver Circle". The treatment of liquid fertilizer gave significantly different results from controls on the parameters of leaf area and plant height. The most optimal dose of liquid fertilizer is 300 mL/L.
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.
Uji Daya Hambat Jamur Eksofit terhadap Phytophthora palmivora (Butler) Butler Penyebab Penyakit Busuk Buah Kakao secara In Vitro ONGKY ARI WIBOWO; I MADE SUDARMA; NI MADE PUSPAWATI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.6, No.3, Juli 2017
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

In Vitro Inhibition Test of Exophytic Fungi against Phytophthora palmivora (Butler) Butler the Cause Black Pod Disease on Cocoa Cocoa is one of the featured crop plantations in indonesia. In a development widely, a common problem is black pod disease. In indonesia Phytophthora palmivora fungi is a major cause black pod disease of cocoa. This disease can reduce the yield and quality of cocoa up to 32-99%.The use of microbial antagonists as a biocontrol agent to suppress the growth of P. palmivora is important. Some exophytic fungi known to have high potential antagonists in suppressing the growth of P. palmivora fungi. This study was aims to determine the potential inhibition of exophytic fungi in suppressing the growth of P. palmivora fungi in vitro. This research was conducted in July 2016 to October 2016 at the laboratory of Biotechnology, Faculty of Agriculture, University of Udayana. Stages of the research include: isolation of pathogenic fungi, isolation exophytic fungi, an in vitro test, and identification of fungi. The result showed the pathogen P. palmivora the cause black pod disease of cocoa at Perean Village, Tabanan Regency, Bali. Exophytic fungus which has the potential inhibition of the highest in study include: Rhizoctonia sp. 93,7%, Trichoderma sp1. 92,9%, Rhizopus sp. 94,4%, Aspergillus sp. 88,2%, Trichoderma sp2. 94,8%, Mucor sp. 93,7%. Exophytic fungi which has antibiosis substance is Trichoderma sp1.
Pengaruh Insektisida Berbahan Aktif Abamektin 18 g/l terhadap Struktur Komunitas Predator Wereng pada Tanaman Padi (Oryza Sativa L.) (Graminae) I MADE SUTIAWAN; A.A AYU AGUNG SRI SUNARI; I KETUT SUMIARTHA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.7, No.4, Oktober 2018
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Influence of Insecticide With an Active Ingredient Abamektin 18 g/l against Community Structure of Planthopper and Leafhopper Predator on Rice (Oryza sativa L.) (Graminae) This research was conducted in Buwit Village, Kediri District, Tabanan Regency, from September until November 2017. The purpose of this research is to know the effect of insecticide with active ingredient Abamektin 18 g /l to diversity, abundance, dominance and functional relationship of predator to Planthoppers and Leafhoppers on ricefield. The study used Randomized Block Design (RBD) with 5 treatments (2,00 cc/l; 1,50 cc/l; 1,00 cc/l; 0,50 cc/l; 0 cc/l) with 5 replications. The result of this research showed that insecticide with active ingredient Abamektin 18 g /l have significant effect to diversity and abundance of predator popolation with low predator diversity index. Abundance of predator populations showed significant differences between control and treatment on all nine types of predators founded. Insecticides with active ingredient Abamektin 18 g/l have a significant effect on predator domination. From the nine types of predators founded, in general Paederus fuscipes most dominance. Lycosa pseudoannulata is the most effective predator in controlling planthopper pests that have a strong functional relationships with plant hopper pests.
Identifikasi Virus Yang Berasosiasi Dengan Penyakit Mosaik, Kuning, Dan Klorosis Pada Tanaman Cabai Rawit (Capsicum Frutescens L.) I GUSTI NGURAH BAGUS PRANATA PUTRA; NI MADE PUSPAWATI; I DEWA NYOMAN NYANA; I KETUT SIADI; GEDE SUASTIKA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.4, No.3, Juli 2015
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT Identification of virus that associated with Mosaic, Yellow, and Chlorosis disease on Chili Pepper (Capsicum frutescens L) This study aims to identify the types of viruses associated with mosaic, yellow, and chlorosis that infect the plants of chili pepper ( Capsicum frutescens L. ) in Kerta village, Gianyar. The method used is the ELISA (Enzyme Linked Immunosorbent Assay) and molecular techniques through PCR (Polymerase Chain Reaction). Research activities include (1) Survey endemic locations of viral diseases in Kerta village, Gianyar (2) Collecting leaf of chilli peper that shown, mosaic, yellowing and chlorosis (3) serology test by ELISA (4) molecular detection through PCR. The results show the percentage average of pepper plants showing mosaic symptoms (52.13%), yellow (22.75%), chlorosis (5.45%) and healthy plant (19.67%). Serology test by ELISA technique showed that the mosaic disease induced by the triple virus that is TMV, ChiVMV, and CMV, whereas yellow symptoms infected by PepYLCV and chlorosis symptoms, infected by Polerovirus. RT-PCR technique successfully amplify the target DNA fragment size of 650 bp for Polerovirus and PCR successfully amplified the target DNA fragment size of 700 bp for PepYLCV in accordance with the specific primers were used. Keywords : Chili pepper, mosaic , yellow, chlorosis
Perbedaan Sifat Biologi Tanah pada Beberapa Tipe Penggunaan Lahan di Tanah Andisol, Inceptisol, dan Vertisol GUSTI AGUNG AYU RATIH SARIDEVI; I WAYAN DANA ATMAJA; I MADE MEGA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.2, No.4, Oktober 2013
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

ABSTRACT Differences in the nature of Soil Biology in Several Types of Land Use Land Andisol, Inceptisol, and Vertisol The aim of this research is to find out the difference of biological properties of soil on several types of land use in Andisol, Inceptisol, and Vertisol soil. The research was conducted on November 2012 until January 2013, starting from sample collection preparation up to soil analysis. Soil sample collection was conducted at Batunya Village (Andisol soil), Kuwum Village (Inceptisol soil), and Pererenan Village (Vertisol soil). Soil sample was analyzed at Soil Laboratory, Faculty of Agriculture University of Udayana. The design used was Randomized Block Design (RAK) of nested pattern with 2 factors, that was soil type factor (T) consisted of Ta (Andisol Soil), Ti (Inceptisol Soil), and Tv (Vertisol Soil), and second factor of land use type (L) consisted of Ls (irrigated land use types with rice), Lc (mixed farming), and Lj (irrigated land use types with corn). The parameters observed in this research among others were total bacterial population, total fungi population, respiration, C-organic content, N-total content, the ratio of C/N and pH. Andisol soil with land use type of mixed farmland (TaLc) has the highest total of bacterial population, at 6,26 x 108 spk g-1 of soil, highest total fungi population and highest respiration. Inceptisol soil with land use type of mixed farmland (TiLc) has the highest total bacterial population, at 6,62 x 108 spk g-1 of soil, highest total fungi population and highest respiration. Vertisol soil with land use type of mixed farmland (TvLc) has the highest total bacterial population, at 6,07 x 108 spk g-1 of soil, highest total fungi population and highest respiration. Andisol, Inceptisol, and Vertisol with three types of land use that are rice field, mixed farmland, and corn field have different biological properties. The type of land use of mixed farmland has biological properties of soil higher than other types of land use. Key words: Type of soil, Type of land use, and Biological properties of soil
Pengaruh 2,4-D terhadap Induksi Kalus Daun Stroberi (Fragaria sp.) dengan Media Alternatif Nutrisi Hidroponik AB Mix AJENG IDVATUL FITROH; RINDANG DWIYANI; I KETUT ARSA WIJAYA; HESTIN YUSWANTI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.7, No.3, Juli 2018
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Influence of 2,4-D to induce callus from strawberry leaves on alternative media of AB Mix hydroponic nutrientThis research was conducted to find out the most optimum 2,4-D concentration to induce callus from strawberry leaves on alternative media of AB Mix hydroponic nutrient. This research used Completely Randomized Design with 5 levels of treatment concentration of 2.4-D hormon, first: AB Mix hydroponic nutrients (as basic media) without 2,4-D, second: basic media + 0.5 ppm 2.4 -D, third: basic media + 1 ppm 2,4-D, fourth: basic media + 1.5 ppm 2,4-D, fifth: basic media + 2 ppm 2,4-D. The variables observed were the day explant curled up, day explant swelled, percentage of eksplan curled up (%), percentage of explants swelled (%), the day callus appears, and percentage of explant browning (%). The best percentage of the treatment in callus induction of the strawberry leaves is on the P3 treatment with the concentration of 2,4-D as much as 1.5 ppm, with the fastest curled up explants time of 3 days after culture, the highest curled up eksplants (93.3%), the fastest swelled explants (17.0 days after culture), and the highest swelled percentage (40.0%). Callus formed 32 days after swelling. Successful callus formed only in treatment basic media with 1,5 ppm 2,4-D concentration.
Deteksi Keberadaan Liberobacter asiaticum Pada Tanaman Jeruk Yang Terserang Citrus Vein Phloem Degeneration (CVPD) Dengan Gejala Parsial VANI SILVANA; I NYOMAN WIJAYA; I GEDE PUTU WIRAWAN
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.5, No.4, Oktober 2016
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Detection Of The Existence of Liberobacter Asiaticum in Citrus Stricken with Sympthoms of Partial CVPD Citrus Vein Phloem Degeneration (CVPD) is a major disease of citrus caused by Gram-negative bacteria Liberobacter asiaticum. The symptoms of the disease were varied due to many factors such as type of pathogenic races of the pathogen, types of citrus trees, and the presence or spread of plant pathogens in the plant. This study aims to detect the existence or distribution of pathogens of CVPD in citrus plant with partial symptoms. Samples were taken from the bone leaves, bark twigs, bark of branches and bark of stem whether symptomatic or non symptomatic. Sampling was carried out in Plaga village, Badung Regency, Bali and analysis of polymerase chain reaction (PCR) was conducted in UPT Lab Genetics Resources and Molecular Biology, Udayana University. The results of this study indicate that the amplified DNA of 1160 bp was found in the first plant that was  symptomatic leaf, twig bark of leaf symptomatic and non symptomatic leaves. While on the second sample of citrus plants, DNA fragments were found on the leaves and symptomatic leaf and non symptomatic, and they were not found in other parts of plant, namely twig bark, branch bark, bark of stem. These results indicate that in citrus with partial symptoms the distribution of pathogens L. asiaticumwere only partial in plant.
Uji Efektifitas Jamur Beauveria bassiana Bals. terhadap Ulat Grayak (Spodoptera litura F.) pada Tanaman Tembakau ANANDA RIZKI NURANI; I PUTU SUDIARTA; NI NENGAH DARMIATI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.7, No.1, Januari 2018
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

The Effectiveness Test of Fungus Beauveria bassiana Bals. against Armyworm (Spodoptera litura F.) on Tobacco Crops Tobacco crops is one of the national commodity and plays an important role for Indonesian economy. Various attempts of cultivation technique have been implemented. However, obstruction are found on tobacco cultivation, one of them is armyworm (Spodoptera litura F.) pest. The effort of controlling the pests is still using chemical technique while in fact it leds to negative impact to living beings and environment. Therefore, eco-friendly control using fungus Beauveria bassiana Bals. in the form of formulation are necessary. This study was conducted to determine the quality and effectiveness of B. bassiana formulation obtained from Estate Crops Service of Bali Province against armyworm (S litura). Research method of this study was using a randomized block design with 5 treatments and 5 replicates. This treatment was using concentration of 60 grams, 45 grams, 30 grams, 15 grams formulation dissolved in one liter of water and the control of using water only. The observed variable was the mortality and intensity of armyworm attacks (S. litura). The result of this study showed that the formulation of fungus B. bassiana has characteristics in which the colonies are white, round-shapes spores, grape-shaped structure and the density of a spore is 1 x 107 spores/ml, therefore it considered it has a good quality. B bassiana formulation is able to infect armyworm (S. litura) on the fourth day. Efficacy test in the green house of 60 grams concentration dissolved in one liter of water showed a good result, with the highest mortality and the lowest damage intensity of tobacco crops.

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