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E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology)
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This is an Open Access Journal

Open Access journal
ISSN (Online) 2301-6515
Published by Universitas Udayana

[62 journals]

Halaman Depan JAT Vol. 11, No. 2, April 2022
- Authors: Pengelola JAT
  Abstract: Halaman Depan JAT Vol. 11, No. 2, April 2022
  PubDate: 2022-05-24
Pengaruh Larutan Klorin dan Kemasan Plastic Film terhadap Perubahan
Fisiko-Kimia Tomat (Lycopersicum esculentum Mill.) Selama Penyimpanan
- Authors: DWI AGUS ARSANA, I MADE SUKEWIJAYA, ANAK AGUNG GEDE SUGIARTA
  Pages: 119 - 132
  Abstract: The Effect of Chlorine Concentration and Tomato Packaging Type on Physical and Chemical Changes during Storage in Tomatoes Plants (Lycopersicum esculentum Mill.) Tomatoes are one of the important commodities that are vulnerable to contamination by various kinds of microorganisms. The thing that can overcome contamination is by washing and packaging. The chlorine compound that is most often used as a sanitizer is hypochlorite. The type of sanitizer used in this study was sodium hypochlorite (NaOCl). Packaging protects quality and sanitation so that consumers receive tomatoes fresher and quality is guaranteed, packaging should not interfere with the process of heat release from respiration. The type of packaging used in this study was LDPE plastic film and white stretch film (WSF). The design used in this study was a completely randomized design (CRD) with two factors and each combination was repeated three times, so that there were 36 experimental units. The first factor is the treatment of chlorine solution concentrations consisting of four levels: without chlorine solution, concentration of 100 ppm, concentration of 200 ppm, concentration of 300 ppm. The second factor is packaging with 3 levels of without packaging, packed with LDPE plastic film, packed with white stretch film (WSF). The results of this study indicate that the combination of washing using chlorine solution and the best packaging slows the physicochemical changes based on vitamin C variables where the decrease in fruit acid levels is shown in the 200 ppm chlorine concentration and packaged with white stretch film (WSF) treatment.
  PubDate: 2022-05-24
Tingkat Kerentanan Berbagai Umur Tanaman Melon (Cucumis melo L.) terhadap
Infeksi Potyvirus
- Authors: I KADEK ARYARTHA, TRISNA AGUNG PHABIOLA, GUSTI NGURAH ALIT SUSANTA WIRYA
  Pages: 133 - 144
  Abstract: Susceptibility Levels of Various Ages of Melon Plants (Cucumis melo L.) Against Potyvirus Infection Domestic melon production has not been able to fulfill the community. Pest disruption is one of the main causes of declining melon production so that the community's demand for melons is not fulfilled. Potyvirus is a virus that is often found in melon plants in Bali, but information about the development of this disease is very limited. This study aims to determine the effect of time on the rate of Potyvirus infection in melon (Cucumis melo L.) plants. The steps taken in this study were preparing plants, inoculating Potyvirus in plants, observing disease progression and conducting research in the laboratory using the RT-PCR (Reverse Transcription Polymerase Chain Reaction) test. The results showed that the younger the melon plants infected by Potyvirus, the faster the rate of infection and the more severe the symptoms caused. The rate of infection in plants treated with inoculation at the age of 2, 3, 4, 5, 6, 7 weeks after planting and without inoculation treatment was 0.96 respectively; 0.60; 0.53; 0.41; 0.30; 0.18 and 0. Melon plants with inoculation treatment of 2, 3 and 4 weeks after planting were very susceptible to Potyvirus infection, which showed signs of severe mosaicism and severe malformations. Melon plants with inoculation treatment 5, 6 and 7 weeks after planting were more resistant to Potyvirus infection, namely showing moderate mosaic symptoms and mild mosaicism, while plants that were not given inoculation treatment showed no symptoms. Detection of Potyvirus using the RT-PCR method using primers (CI-FOR / CI-REV) successfully amplified Potyvirus fragments in the presence of base bands measuring ±683 bp in samples A, B, C, D, E, and F.
  PubDate: 2022-05-24
Analisis Spasial Faktor Prioritas Daerah Rawan Banjir di Kota Denpasar
Provinsi Bali
- Authors: DEWA AYU CHYNTIA ANGELINA, NI MADE TRIGUNASIH, PUTU PERDANA KUSUMA WIGUNA, I WAYAN SEDANA
  Pages: 145 - 152
  Abstract: Analysis Priority Factors of Flood Prone Areas in Denpasar City Bali Province Floods are caused by the low infiltration capacity of the soil and the overflow of surface water (runoff) due to the long duration of rain and the high intensity of rainfall so that it cannot accommodate the accumulation of rainwater. Denpasar City is one of the cities in Bali Province where floods often cause losses in terms of material and physical environment. The determinants of flood susceptibility use the same factors, namely rainfall, soil type, land use, slope, and elevation but are influenced by environmental conditions so that the priority value of each factor is different. Therefore, there is a need for a research of the priority factors of flood-prone areas in Denpasar City. The purpose of the research was to determine the determinants of flood vulnerability and priority factors for flood prone areas in Denpasar City using Spatial Multi Criteria Evaluation. This research was carried out in Denpasar City from August to December 2021. The method used was Spatial Multi Criteria Evaluation for weighting and determining priority values ''for determining flood susceptibility through Geographic Information System applications. This research produces an output in the form of a map of each of the determinants of flood vulnerability in Denpasar City. The results showed that the rainfall factor was the first priority, the land use factor was the second priority, the soil type factor was the third priority, the slope factor was the fourth priority, and the altitude factor was the last priority.
  PubDate: 2022-05-24
Identifikasi Penyebab Penyakit Bercak Daun Mycosphaerella pada Tanaman
Stroberi (Fragaria sp.) di Bali dan Potensi Pengendaliannya dengan Jamur
Antagonis secara In Vitro
- Authors: GUSTI AYU DWITA ANDRAWINA, GUSTI NGURAH ALIT SUSANTA WIRYA, NI WAYAN SUNITI, I PUTU WIRYA SUPUTRA
  Pages: 153 - 163
  Abstract: Identification of Pathogenic Fungi causes Mycosphaerella Leaf Spot on Strawberry Plants (Fragaria sp.) in Bali and Control Potential with Antagonist Fungi Strawberry (Fragaria sp.) is a fruit cultivation plant that develops in Indonesia and has attractiveness and high economic value. Strawberry plants that grow at the center of strawberry production in Bali show symptoms of pathogenic fungus attack. Symptoms caused by the presence of brownish purple spots with a white center on the leaves. The purpose of this study was to identify pathogenic fungi that caused Mycosphaerella leaf spot disease on strawberry plants located at the center of strawberry production in Bali. The activities carried out in this study were (1) sampling and calculating the percentage of Mycosphaerella leaf spot disease on strawberry plants, (2) isolation of pathogenic fungi from symptomatic leaves of strawberry plants, (3) pathogenicity testing, (4) identification of pathogenic fungi, and (5) test the potential inhibition of antagonistic fungi against pathogenic fungi. This research was conducted in Candi Kuning and Br Kembang Merta Village, Tabanan Regency and Pancasari Village, Buleleng Regency, and continued at the Plant Disease Laboratory, Faculty of Agriculture, Udayana University. The results of this study were successful in identifying Mycosphaerella fragariae as a pathogen causing leaf spot disease on strawberry plants in Bali and the potential for biological control by utilizing antagonistic fungi in vitro showed that Trichoderma viride, Trichoderma asperellum, Gliocladium sp. can suppress the growth of pathogenic fungi in strawberry plants of > 90%, Trichoderma harzianum and Trichoderma koningii up to >80%.
  PubDate: 2022-05-24
Pengaruh Media Simpan dan Letak Biji dalam Buah terhadap Viabilitas Benih
Kakao (Theobroma cacao L.)
- Authors: NI KADEK KRISNA JAYANTI, I MADE SUKEWIJAYA, IDA AYU MAYUN
  Pages: 164 - 174
  Abstract: The Effect of Storage Media and Seeds Location in Fruit to the Viability of Cocoa Seeds (Theobroma cacao L.) One of the productivity of cacao plants is determined by the seeds. Cacao seeds are classified as recalcitrant seed that do not have dormancy period, so they need special storage technique and proper seeds selection to maintain their viability. This study aims to determine the effect of storage media and seeds location in fruit to the viability of cacao seeds. This study used factorial completely randomized design consisting of 2 factors with 3 repetitions. The first factor is storage media, consists of 3 levels (cocopeat 100%, cocopeat 50%+husk 50%, cocopeat 50%+saw dust 50%). The second factor is the seed location in fruit, consists of 3 levels (first, middle, and end of fruits). The observed variable includes the percentage of moldly seeds in the storage, seed moisture content, rate of germination, vigor index, germination, hypocotyl length, epycotyl length, and number of leaves. The result of the study showed that storage media very significally affected to the percentage of moldy seeds in the storage, seed moisture content, vigor index, germination, hypocotyl length, and significally affected to the rate of germination. The seed location significally affected to seed moisture content, vigor index, germination, and epycotyl length. There is no significant interaction between storage media treatment and seed location to all benchmark of cacao seed viability observed. The good treatment is in the cocopeat storage media 50%+saw dust 50% with the seeds location in the first and middle of fruit.
  PubDate: 2022-05-24
Pengaruh Konsentrasi dan Lama Perendaman H2SO4 terhadap Pematahan Dormansi
Benih Kopi Arabika (Coffea arabica L.) Varietas Kopyol
- Authors: NOVIAN NAFI BINARHT, IDA AYU MAYUN, I NYOMAN GEDE ASTAWA
  Pages: 175 - 186
  Abstract: Effect of H2SO4 Concentration and Soaking Time On Dormancy Breaking of Arabica Coffee (Coffea arabica L.) Kopyol Varieties This study aims to determine the effect of H2SO4 concentration and soaking time on breaking the dormancy of Kopyol Arabica coffee. The experimental design used was a factorial randomized block design with two factors. The first factor is the concentration of H2SO4, which consists of four levels, namely 0%, 10%, 20% and 30%, while the second factor is the immersion time, which consists of three levels, namely 10 minutes, 20 minutes and 30 minutes. The research was conducted at Mengani Village, Kintamani District, Bangli Regency, from August 2021 to October 2021. The results showed the interaction of H2SO4 concentration treatment and immersion time had a significant effect on the germination variable (%), maximum growth potential (%), dormancy intensity (%) and synchronous growth (%) and had no significant effect on the growth speed (%/etmal) variable. The best treatment for accelerating the breaking of dormancy is the treatment with 20% H2SO4 concentration and 20 minutes of soaking time, which breaks dormancy at 25 days after sowing and has a germination value of 91.11%, a maximum growth potential of 97.78%, a dormancy intensity of 2.22% and synchronous growth of 86.67% compared to the control, which broke dormancy at 35 days after sowing and had a germination value of 57.78%, a maximum growth potential of 64.44%, a dormancy intensity of 35.56% and synchronous growth of 53.33%.
  PubDate: 2022-05-24
Pemetaan Daya Tarik Wisata dan Fasilitas Penunjang Pariwisata Berbasis
Geography Information System di Desa Belimbing, Tabanan-Bali
- Authors: LUH GEDE PINA ADI PRASTUTI, I KETUT SARDIANA, TATI BUDI KUSMIYARTI
  Pages: 187 - 195
  Abstract: Mapping of Tourist Attractions and Geograpyh Information System Based Tourism Support Facilities in Belimbing Village, Tabanan-Bali Belimbing Village has potential that can be used as a tourist area, but the development of tourism potential has not been maximized, a lack of utilization, development of natural resources so that it has not been able to provide economic benefits for the community. The purpose of this study was to take an inventory, identify, determine the level of feasibility, and prepare directions for the development of natural potential in Belimbing Village into a tourist area by utilizing the Geography Information System (GIS) application. The method used in this research is the spatial analysis based on attractiveness, supporting facilities, and supporting facilities. Results of spatial data processing and field survey show that Belimbing Village has 3 natural tourism potentials and 1 cultural/religious tourism potential.
  PubDate: 2022-05-24
Identifikasi Penyebab Penyakit Bercak Merah pada Tanaman Stroberi
(Fragaria sp.) di Bali dan Potensi Pengendaliannya dengan Jamur Antagonis
Secara In Vitro
- Authors: I GUSTI AYU ARI SANTIKADEWI, GUSTI NGURAH ALIT SUSANTA WIRYA, TRISNA AGUNG PHABIOLA, I PUTU WIRYA SUPUTRA
  Pages: 196 - 207
  Abstract: Identification of Pathogenic Fungi causes Red Leaf Spot on Strawberry Plants (Fragaria sp.) in Bali and Control Potential with Antagonist Fungi Strawberry (Fragaria sp.) is a subtropical fruit plant that was first discovered in Chile, America and has high economic value. Strawberry plants growing in Bali show symptoms of pathogenic fungi attack. Symptoms include red spots on the leaf surface. The purpose of this study was to identify pathogenic fungi that cause disease in strawberry plants in the center of strawberry cultivation in Bali. The activities carried out in this study were (1) sampling, (2) isolation of pathogenic fungi from symptomatic strawberry plant parts, (3) pathogenicity test, (4) morphological identification of pathogenic fungi, and (5) potential inhibition test of antagonistic fungi. against pathogenic fungi. This research was conducted in Pancasari Village, Buleleng Regency and Candi Kuning and Kembang Mertha Villages, Tabanan Regency and continued at the Plant Disease Laboratory, Faculty of Agriculture, Udayana University, Denpasar. The results of this study succeeded in identifying Pestalotiopsis sp. as a pathogen causingred spot disease on strawberry leaves in Bali and the potential for biological control using antagonistic fungi in vitro showed that Gliocladium sp. and Trichoderma asperellum can suppress the growth of pathogenic fungi on strawberry plants by > 80%, Trichoderma viride up to > 90% and Trichoderma koningii and Trichoderma harzianum up to > 50%.
  PubDate: 2022-05-24
Metode Isolasi Jamur Patogen Serangga (Aschersonia placenta) Menggunakan
Media Water Agar dan Potato Sucrose Agar
- Authors: NI MADE SAVITA RASJMAN, I PUTU SUDIARTA, TRISNA AGUNG PHABIOLA, GUSTI NGURAH ALIT SUSANTA WIRYA, I PUTU WIRYA SUPUTRA
  Pages: 208 - 215
  Abstract: Isolation Method of Insect Pathogenic Fungi (Aschersonia placenta) using Water Agar Media and Potato Sucrose Agar Bali Province is one of the provinces that is famous for its superior agricultural commodities. One of the leading agricultural commodities is citrus. The production of citrus fruits in Bali Province in 2020 is 4,903,341 quintals based on data from the Central Statistics Agency for Bali Province 2021. However, in some citrus-producing areas, citrus fruit production has decreased compared to the previous year. The decline in citrus fruit production is caused by several factors, one of which is the attack of whitefly pests. Whitefly pests can be controlled by utilizing the insect pathogenic fungus Aschersonia placenta. This study aims to determine the isolation method of insect pathogenic fungi Aschersonia placenta using water agar media and potato sucrose agar. The study began with sampling, isolated the fungus and identifying the fungus by morphological characteristics. The results of this study showed that isolation method of A. placenta using water agar media and potato sucrose agar effective for multiply the fungus.
  PubDate: 2022-05-24
Pengaruh Jumlah Buah dan Jenis Kemasan terhadap Sifat Fisik, Kimia, dan
Masa Simpan Buah Tomat (Lycopersicum esculentum Mill.)
- Authors: IDA BAGUS GEDE UPADANA MANUABA, ANAK AGUNG GEDE SUGIARTA, I NYOMAN GEDE ASTAWA
  Pages: 216 - 228
  Abstract: Effect of Number of Fruits and Type of Packaging on Physical, Chemical Properties and Shelf Life of Tomato Fruit (Lycopersicum esculentum Mill.) The demand for tomatoes increases along with the increase in economic growth and population. Efforts to maintain the quality of tomatoes are to delay ripening using various plastic packaging. This study aims to determine the effect of the right amount of fruit in the packaging and determine the suitable packaging in maintaining the physical, chemical and shelf life of tomatoes. The research was carried out from December 2020 to January 2021 at the Plant Breeding and Seed Laboratory, Faculty of Agriculture, Udayana University, Jl. PB. Sudirman, Denpasar. The experimental design used was a factorial completely randomized design (CRD) with 4 replications and 2 treatment factors so that 24 experimental units were obtained. The 2 treatment factors were as follows: packaging treatment (K) consisted of three treatments K0 = Control (without packaging), K1 = Polypropylene (PP) packaging, K2 = Polyethylene (PE) packaging and number of fruit (T) consisted of two treatments T1 = 3 pieces in a pack, T2 = 4 pieces in a pack. The results showed that the use of polypropylene packaging (K1) and the use of 3 packaged pieces (T1) were able to extend the shelf life of up to 22.75 days, compared to the polyethylene packaging type (K2). The smallest weight loss was found in the treatment of polypropylene packaging type (K1) at 4 Hsp which reached 0.05%. Treatment of the type of polypropylene packaging (K1) showed a low respiration rate at 4 Hsp which reached 22.88 mg CO2/kg/hour. The treatment of polypropylene packaging type (K1) showed the highest hardness level at 4 Hsp, namely 8.40 mm/100/gram/second. The results showed that the number of fruits per package had an effect on weight loss, respiration rate, and shelf life of tomatoes.
  PubDate: 2022-05-24
Analisis Faktor Prioritas Daerah Resapan Air di Kota Denpasar Provinsi
Bali
- Authors: NI PUTU UTARI HANDAYANI, NI MADE TRIGUNASIH, PUTU PERDANA KUSUMA WIGUNA, I WAYAN SEDANA
  Pages: 229 - 235
  Abstract: Analysis Priority Factor of Water Catchment Area in Denpasar City Bali Province Denpasar City as the capital city and one of the tourism centers in Bali Province is experiencing an increasing need for residential land use, because Denpasar City has a fairly large population. This causes a reduction in the water catchment area, so that most of the water becomes runoff. Determination of water catchment areas in all areas using the same factors, namely, soil type, rainfall, slope, and land use. However, each factor will be influenced by environmental conditions which cause each factor to have a different priority value. Therefore, it is necessary to study the priority factors of water catchment areas in Denpasar City. This research was conducted from September to December 2021. The purpose of this study was to determine the determinants of water catchment areas in Denpasar City and the priority value of each factor. This study utilizes spatial technology, namely Geographic Information Systems (GIS) which uses the Spatial Multi Criteria Evaluation (SMCE) to determine the weight and priority value of the determinants of water catchment areas. This research produces an output in the form of a map of each of the determinants of water catchment areas. The results showed that the soil type factor became the first priority, the rainfall factor became the second priority, the land use factor became the third priority, and the slope factor became the last priority.
  PubDate: 2022-05-24