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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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Halaman Depan JAT Vol. 9, No. 4, Oktober 2020 Pengelola JAT
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.4, Oktober 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Halaman Depan JAT Vol. 9, No. 4, Oktober 2020
Uji Daya Hambat Bakteri Paenibacillus polymyxa terhadap Pertumbuhan Jamur Colletotrichum sp. Secara In Vitro IDA AYU ISTRI MAYADIANTI; KHAMDAN KHALIMI; NI WAYAN SUNITI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.4, Oktober 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Inhibition Test of Paenibacillus polymyxa on the Growth of the Fungus Colletotrichum sp. in vitro Fungus Colletotrichum sp. is an airborne pathogen that causes anthracnose disease in chili. Utilization of biological agents of Paenibacillus polymyxa is the choice in suppressing the growth and fungal attack of Colletotrichum sp. The use of biological agency is environmentally friendly. The purpose of this study was to determine the inhibitory properties of P. polymxya bacteria against the growth of the fungus Colletotrichum sp. in vitro.The results showed that P. polymyxa isolates C1 was able to inhibit the growth of C. acutatum isolates BLCB, C. gloesporioides isolates KLCR2, C. scovillei isolates SGCR, C. fructicola isolates KRCR, C. truncatum isolates DPCR2 and C. nymphae isolates BLCR, with the percentage of inhibition ranging from 82.74% to 86.52%. Bacterial filtrate P. polymyxa C1 was able to inhibit the growth of fungal colonies of C. acutatum isolate BLCB, C. gloesporioides isolate KLCR2, C. scovillei isolates SGCR , C. fructicola isolates KRCR, C. truncatum isolates DPCR2 and C. nymphaeae isolates BLCR with inhibitory power percentage ranging from 71.90% to 82.48%.
Uji Aktivitas Antijamur Bacillus cereus terhadap Colletotrichum fructicola KRCR Penyebab Penyakit Antraknosa pada Buah Cabai Rawit (Capsicum frutescens L.) KRISNA SANUBARI PURBA; KHAMDAN KHALIMI; NI WAYAN SUNITI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.1, Januari 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Test of Antifungal Activity of Bacillus cereus Against Colletotrichum fructicola Causing Anthracnose Disease in Cayenne Pepper (Capsicum frutescent L.) Anthracnose or fruit rot disease that attacks ceyenne pepper is caused by the pathogenic fungus Colletotrichum fructicola, this disease can cause crop failure. Currently, control of this disease is still using synthetic fungicides, but this method can cause demage to the ecosystem. Biopesticides are one of the enviromentally friendly control of plant phatogens because biopesticides use biologycal agents. The purpose of this study was to determine the ability of B. cereus bacteria to inhibit the growth of C. fructicola KRCR cause anthracnose desease in vitro. The result showed that bacteria B. cereus was able to inhibit the growth of fungal colonies C. fructicola KRCR on potato dextrose agar (PDA) with an inhibitory percentage of 90.55% when compared to controls. The results of the B. cereus filtrate test a concentration of 50% is able to inhibit the growth of C. fructicola KRCR with an inhibitory percentage of 87.56%.
Kajian dan Induksi Tunas Tanaman Anggur Merah (Vitis vinifera L. var. Prabu Bestari) dengan Beberapa Jenis Sitokinin Secara In Vitro KADEK PEBRIYANI; RINDANG DWIYANI; IDA AYU PUTRI DARMAWATI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.4, Oktober 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Study of Sterilization and Induction of Red Grape Shoots (Vitis vinifera L. var. Prabu Bestari) with Several Types of Cytokinins In Vitro This study aims to determine the most suitable sterilization method for the sterilization of red grape explants and to determine the effect of giving growth regulators BAP, 2iP, and TDZ in the induction of red grape shoots. This research was conducted from January to June 2020 at the Tissue Culture Laboratory, Faculty of Agriculture, Udayana University. The design used in this study used a completely randomized design (CRD). The parameters observed in this study were the percentage of contamination, when the shoots appeared, when the roots appeared, the percentage of shoot growth explants, the percentage of root growth explants, and the percentage of leaf growth explants. This research is discussed descriptively. The results of the analysis of the research on the sterilization method showed that the sterilization method I through the maintenance of mother plants with 80% mankozeb and the use of clorox immersion in gradual concentrations was able to reduce the percentage of contamination to 61.2% and the use of TDZ 1 ppm growth regulators in combination with 0.01 ppm NAA on WPM medium was able to induce shoots and roots in red wine explants.
Daftar Isi JAT Vol. 8, No. 1, Januari 2019 Pengelola JAT
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.1, Januari 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Daftar Isi JAT Vol. 8, No. 1, Januari 2019
Analisis Kebutuhan Ruang Terbuka Hijau Berdasarkan Kebutuhan Oksigen Menggunakan Teknologi Penginderaan Jauh di Kabupaten Badung ANAK AGUNG PLASA PADMAWATI; I WAYAN NUARSA; I KETUT SARDIANA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.1, Januari 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Analysis Of Need For Green Open Space Based On Oxygen Needs Using Remote Sensing Technology In Badung Regency Badung Regency is one of the regencies in Bali Province which has a quite rapid development. Total population of Badung regency in 2018 was 656.90 thousand people with population growth rate of 4.64 % which is the highest growth rate in Bali Province. The objective of this research is (1) to map the percentage of green open space in Badung Regency using Sentinel-2A satellite imagery, (2) to analyze the oxygen needs of Badung regency, and (3) to evaluate the need of green open space in Badung regency based on availability of green open space and the need for oxygen. This study was a descriptive quantitative research who utilize remote sensing technology using the satellite imagery of Sentinel-2A and Gerarkis methods. The methods of sample collection was stratified random sampling with the number of sample is 76. The estimated density of vegetation derived from a comparison between the five indices of vegetation that is NDVI, RVI, DVI, TVI, and SAVI. The result of study shows that the SAVI is the best vegetation index for green open space estimation based on the determination coeffecient (R2) value. The t-test paired confirm as well that there are no significant different between green open space obtaining from estimation using Sentinel-2A satellite imagery and direct measurement on high-scale images. The estimation result of vegetation density indicates that the vast green open space in Badung Regency in 2019 was 22.930,67 ha. The extent of the need of green open space based on oxygen demand by residents, vehicle, and livestock in 2019 is 7.516,34 ha.
Identifikasi Jamur Penyebab Penyakit Kudis pada Buah Jeruk Siam Kintamani (Citrus nobilis L.) dan Pengendaliannya Secara Hayati ATPENIA BR SEMBIRING; I MADE SUDANA; NI WAYAN SUNITI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.1, Januari 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Identification of Fungi Causing Scabies Disease on Kintamani Siam Orange Fruit (Citrus nobilis L.) and Biological Control Siam orange is one of the leading fruit commodities in the Province of Bali, Kintamani District is one of the areas that produce siam orange in Bali. Orange fruits in Kintamani District show many symptoms of attacks on the skin of orange fruits such as scabies. Symptoms of the attack include brownish to gray spots, slightly protruding like a cork, forming a pattern on the skin of the fruit like a splash of water and rough to the touch like scabies, the cause of this disease is unknown. Orange scab disease get less attention by farmers because it is considered to have no effect on the quantity or taste of orange fruits, but orange scab disease has seriously damaged the appearance of orange fruits. The purpose of this study was to determine the pathogens that causing scurvy in orange fruits and to determine which fungi are antagonistic and able to suppress the growth of pathogens that cause scurvy in Kintamani District. The results of the isolation and molecular identification of the scurvy pathogenic fungi showed that the fungi was Diaporthe phaseolorum and the antagonistic fungi that could control the pathogenic fungi in vitro were Aspergillus niger isolated from healthy citrus fruits in the same location and the Trichoderma fungi group, namely T. asperellum, T. harzianum, T. koningii, T. viride.
Uji Aktivitas Antijamur Bacillus siamensis C7B terhadap Jamur Colletotrichum scovillei Penyebab Penyakit Antraknosa pada Tanaman Cabai Besar (Capsicum annuum L.) PARDIANTA PATRISIUS SINAGA; KHAMDAN KHALIMI; DEWA NGURAH SUPRAPTA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.4, Oktober 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Test of Antifungal Activity of Bacillus siamensis C7B Against Fungus Colletotrichum scovillei Causing Anthracnose Disease on Chili Pepper (Capsicum annuum L.) Colletotrichum scovillei is one of the species of fungi that causes anthracnose disease on chili peppers. The Purpose of this study was to determine the potential of B. siamensis C7B in inhibiting the growth of the fungus C. scovillei that causes anthracnose disease in large chili (C. annuum L.). This study was conducted in vitro by testing the antifungal activity of Bacillus siamensis C7B against three isolats of C. scovillei namely TBCR, SGCR, and GRCR on potato dextrose agar (PDA) and potato dextrose broth (PDB) media. The test results indicate that inhibition of the bacteria B. siamensis C7B able to inhibit the growth of fungi isolates of C. scovillei namely TBCR, SGCR, and GRCR with the percentage of inhibition respectively by 94,91%, 92,66%, and 91,47% when compared to the control on the observation of 21 days after inoculation. The inhibition test results of B. siamensis C7B filtrate at a concentration of 50% showed that the B. siamensis C7B filtrate was able to inhibit the growth of C. scovillei TBCR isolates with a percentage of inhibition activity of 90,27% when compared to control. The results of inhibition test of B. siamensis C7B on the formation of C. scovillei biomass of isolate TBCR showed that B. siamensis C7B was able to inhibit the formation of fungal biomass by 73,81% when compared to control. Further study is needed to evaluate the effectiveness of B. siamensis C7B to control anthracnose disease in vivo on chili pepper.
Prediksi Erosi dan Perencanaan Konservasi Tanah dan Air pada Daerah Aliran Sungai Yeh Ho di Kabupaten Tabanan I GUSTI NGURAH GAURA GOPAL PRASAD PRASAD; NI MADE TRIGUNASIH; MADE SRI SUMARNIASIH
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.2, April 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Erosion Prediction and Planning of Soil Water Conservation at Yeh Ho Watershed in Tabanan Regency The actual problem in the Yeh Ho watershed is the use of land with steep slopes to steep slopes for the use of mixed gardens without conservation measures and poor land cover conditions. The objectives of this study are to predict the magnitude of actual erosion that occurs (A) in the Yeh Ho watershed and to plan soil and water conservation techniques on land units whose erosion exceeds the allowed erosion (Edp) in the Yeh Ho watershed in Tabanan Regency. The method used in this study is a survey/observation method that is taking data in the field and continued with soil analysis in the Soil Laboratory of the Faculty of Agriculture, Udayana University. The stages of the research were carried out in five stages of work, namely: (1) Determination of land units, (2) Field observations and soil sampling, (3) Laboratory analysis and data processing, (4) Erosion prediction using USLE (Universal Soil Loss Equation) method, (5) Determination of allowable erosion and soil and water conservation planning if the actual erosion exceeds the allowable erosion. The results showed that erosion that occurred in the Yeh Ho watershed was classified as very mild to mild at 0.06 to 34.89 tons/ha/yr. Very light erosion occurred inland units 1, 2, 5, 6, 7, 8, 10, and 13 with an area of ??11,096 ha with erosion that occurred in the range of 0.06 to 3,226 tons/ha/yr, mild erosion occurred inland units 3, 4,9,11, and 12 with an area of ??4,868 ha with erosion that occurred from 4.93 to 52.57 tons/ha/year. The land that requires conservation measures covers 1,717 ha from the area of ??the study area and the land that needs to be maintained is 11,096 ha. It is expected that the people in the Yeh Ho watershed in Tabanan Regency can pay attention to land management by maintaining and conserving so that the actual erosion that occurs does not exceed the allowable erosion.
Isolasi dan Identifikasi Bakteri Selulolitik pada Sampah Upacara Agama di Pura Goa Lawah Klungkung NI MADE ADHYA NIDIDHYA SANI; WAYAN ADIARTAYASA; I GEDE PUTU WIRAWAN
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.2, April 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Isolation and Identification of Cellulolytic Bacteria in Religious Ceremony Waste at Goa Lawah Temple Klungkung Cellulolytic bacteria are bacteria that can hydrolyze cellulose complexes into smaller oligosaccharides and finally glucose. Cellulolytic bacteria synthesize a set of enzymes that can hydrolyze cellulose called cellulase enzymes. This study aims to isolate and identify cellulolytic bacteria that have the potential to degrade cellulose by taking organic waste samples from TPS Pura Goa Lawah Klungkung. Characterization was carried out by growing selected pure isolates on CMC media and then dripping with congored 0.1% to test their cellulolytic potential. The results of bacterial isolation at 10dilution-8 obtained 28 bacterial isolates that were able to grow and utilize cellulose as a carbon source. From the isolation results obtained The 4 bacterial isolates each had different morphological characters capable of producing clear zones with a diameter of 10 mm: 5 mm respectively; 3 mm and 4 mm. The results of the isolation of bacterial colonies appeared to be round and irregular in shape, had clear and cream colors, had a convex and flat surface and all isolates had smooth edges. Type C bacterial isolates included gram-negative groups, bacterial isolates A, B and D included gram-positive groups and all bacterial isolates A, B, C and D were rod-shaped. The degradation ability based on the cellulolytic index value of bacterial isolate A was in the highest category compared to bacterial isolates B, C and D.

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