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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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Deteksi Potyvirus pada Gulma Euphorbia heterophylla Bergejala Mosaik di Areal Pertanaman Melon di Kota Denpasar DEBBIE OKTAVIANI DEPARI; TRISNA AGUNG PHABIOLA; GUSTI NGURAH ALIT SUSANTA WIRYA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.3, Juli 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Detection of Potyvirus in Mosaic Symptomatic Euphorbia heterophylla in Melon Planting Area in the city of Denpasar Melon (Cucumis melo L.) is a horticultural plant which is included in the Cucurbitaceae group and is highly favored by the community. The development of melon cultivation has faced some obstacles that cause the level of consumption of melon can not be fulfilled. Viruses in plants have a wide range of hosts including several weeds that can be alternative hosts and as a source of inoculums. Potyvirus group is the largest group of plant viruses and plays an important role in causing harm. This research was conducted to determine whether weeds can potentially as an alternative host of Potyvirus so that they can be used as reference materials for academics and farmers so that they take strategies to control weeds in melon plants. Variations in symptoms found in the field include mosaics, vein banding, vein clearing, and chlorosis. The method used in this study was the Polymerase Chain Reaction (PCR). The research activities include (1) sampling and (2) detection and identification of potyviruses in weeds. The results of this study found that Euphorbia heterophylla weeds could become alternative hosts for Potyvirus. The RT-PCR technique succeeded in amplifying target DNA fragments measuring 683 bp according to the CIFOR / CIREV universal primers used in samples from Denpasar.
Halaman Depan JAT Vol. 9, No. 3, Juli 2020 Pengelola JAT
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.3, Juli 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Halaman Depan JAT Vol. 9, No. 3, Juli 2020
Kesesuaian Lahan Tanaman Buah-buahan dan Perkebunan Berbasis Sistem Informasi Geografis Pada Lahan Kering di DAS Yeh Ho Kabupaten Tabanan CHRIST ALVIN TIMOTHY SIREGAR; NI MADE TRIGUNASIH; I NYOMAN DIBIA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.9, No.3, Juli 2020
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Land Suitability For Fruits Plants And Plantations Based On Geographic Information Systems On Dry Land In Yeh Ho Watershed, Tabanan Regency This research aims to discover the actual and potential of land suitability, limited factor, improvement effort, land use management, and the creation of land suitability maps and direction of use land for fruit plants and plantations. Plants that are evaluated include pomelo, durian, banana, passion fruit, vanilla, pepper, robusta coffee, arabika coffee, coconut and cocoa. The research was conducted in Yeh Ho Watershed Tabanan Regency from January 2020 to March 2020. The research method uses the land evaluation survey method. Land suitability assessment is carried out to the sub-class level, by matching the quality of the land with the growing requirements of the plants evaluated. The results showed that classes of actual land suitability for fruits plants and plantations are S1 (very suitable) until N (not suitable). The limited factors in the research area include: temperature, rainfall, dry month, humidity, texture, coarse material, soil depth, pH, salinity, slope, erosion hazard, surface rock, and the rock outcrops. Improvement of the land-suitability can be done with improvement effort except temperature, rainfall, humidity, coral material, surface rock, and rock outcrops because they are permanent barrier factor. Potential suitability class of land for some fruit plants and plantations evaluated are S1 (highly suitable) until S3 (marginal suitable), with limited factors among others temperature, rainfall, humidity, coarse material, surface rock, and rock outcrops factors. Land use recommendations on LCKIVKc and ACKIVTg for robusta coffee plants; ACKIVKc for pomelo plants; LCKIIKc for durian, banana, pomelo, coconut and pepper plants; LCKIIITg for pepper and vanilla plants; LCKIIIKc for pomelo and banana plants.
Evaluasi Status Kesuburan Tanah Sawah Berbasis Sistem Informasi Geografis (SIG) di Beberapa Subak Kecamatan Mendoyo Kabupaten Jembrana HASBI MAULANA; A.A. NYOMAN SUPADMA; GUSTI PUTU RATNA ADI
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

Evaluation of Rice Field Fertility Status Based on Geographical Information System (GIS) in Several Subak, Mendoyo District, Jembrana Regency Research on Evaluation of Rice Field Fertility Status Based on Geographical Information System (GIS) in Several Subaks of Mendoyo District, Jembrana Regency, was conducted in December 2019 - May 2020. The purpose of this study was to determine the status of soil fertility and what fertility parameters are the limiting factors. provide directions on the management of soil fertility in accordance with the status of soil fertility and making maps of soil fertility status in several subaks of Mendoyo District. The method used in this research includes Survei and soil testing methods at the Laboratory of Soil and Environmental Sciences, Faculty of Agriculture, Udayana University. This research begins with making a map of homogeneous land units by overlaying a map of soil types; slope map of slopes; a scale of 1: 25,000. Then twelve homogeneous land units were obtained and the soil samples were taken by purposive sampling and analyzed the chemical properties of the soil in the laboratory which included: CEC; BS; Organic C; total P and K of soil. The soil fertility status is evaluated according to the PPT technical guidelines (1995). The results showed that the soil at the study location had two soil fertility statuses, namely high and medium soil fertility status. Locations that have moderate fertility are SLH I (Subak Tibubeleng), III (Subak Tibubeleng), VI (Subak Telepus), VII (Subak Tegal Gintungan), X (Subak Jagaraga), XI (Subak Telepus), and XII (Subak Jagaraga). While high fertility status is found in SLH II (Subak Tibubeleng), IV (Subak Tibubeleng), V (Subak Tegal Gintungan), VIII (Subak Tibubeleng), and IX (Subak Jagaraga). The soil fertility parameter that becomes an obstacle in the status of soil fertility in the location of this study is the low organic-C content. The direction of soil fertility management for SLHs with low C-organic content is the addition of organic matter and P fertilizers to increase the soil fertility status.
Pengaruh Jenis Formula Media Pembawa dan Bakteri PGPR (Plant Growth Promoting Rhizobacteria) Dalam Memacu Pertumbuhan dan Menekan Penyakit Blas (Blast) pada Tanaman Padi Beras Merah Lokal Jatiluwih TRIWANTO NABABAN; I MADE SUDANA; I DEWA PUTU SINGARSA
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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The Effect of PGPR (Plant Growth Promoting Rhizobacteria) Bacteria Carier Media Formulas in Growth Stimulate and Suppressing The Presece of Blast Diseases in Jatiluwih Local Brown Rice Plants. This study aims to determine the effect of PGPR (Plant Growth Promoting Rhizobacteria) bacteria carier media Formulas in growth stimulate and suppressing the presece of blast diseases in jatiluwih local brown rice plants. Formulas will be tested directly in the field to determine the best formula to stimulate growth and suppress blast disease in local brown rice jatiluwih. The formulas tested were sand, flour, liquid PPG, compost and control which was given 1% mixture of PGPR bacteria 4 kinds of rhizobacteria, namely Serratia marcescens, Achromobacter spanius, Providencia vermicola, Myroldes adoratimimis. 1 clump of seeds immersed in the formula for 24 hours then sowing in the field. each treatment repeated 5 times. The planting pattern in this study used a randomized block design (RBD) and observed variables ranging from growth to yield. All data obtained were analyzed quantitatively using analysis of variance (ANOVA) at the 5% level. The results showed that all treatments using the formulas could stimulate the growth and resistance of brown rice plants to blast disease then the yield of brown rice plants could be increased. Liquid PPG and rhizobacteria PGPR formulas that have better capabilities than other formulas.
Pengaruh Komposisi Media Tanam terhadap Pertumbuhan dan Hasil Tanaman Pakcoy (Brassica chinensis L.) KARINA SAFITRI; I PUTU DHARMA; I NYOMAN DIBIA
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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Effect of Plant Media Composition on Growth and Yields of Pakcoy (Brassica chinensis L.) The high rate of population growth in Indonesia has had a significant impact on total consumption and food needs. The increasing number of population also increases the need for food, however the high demand for food has not been supported by the relatively low level of food production. Planting in polybags is an alternative that can be developed in urban communities by utilizing as little land as possible to continue to be able to carry out cultivation activities so that an urban household is able to meet its own food needs. Pakcoy is one of type of vegetable that has commercial value and is popular with the public because it tastes delicious, crispy, and fresh. The potential for production and market demand for this vegetable is very large, so it needs to be utilized and managed properly and environmentally friendly, but the planting medium often occurs and plants often die due to the composition of the planting medium that does not match the plant's needs. This study aims to obtain the composition of the planting media that can provide the highest yields on the growth of Pakcoy. This study used a randomized block design (RAK) with 7 treatments for the composition of the planting media and 4 replications. The treatment level consists of KA0 (100% soil), KA1 (90% soil + 5% compost + 5% charcoal), KA2 (80% soil + 10% compost + 10% charcoal), KA3 (70% soil + 20% compost + 10% charcoal), KA4 (60% soil + 30% compost + 10% charcoal), KA5 (50% soil + 30% compost + 20% charcoal), KA6 (40% soil + 40% compost + 20 % charcoal). The results showed that the composition of the planting media significantly affected plant height and number of leaves age 21, leaf area, stem diameter, fresh weight total of the plant and dry weight total of the plant. The KA6 media treatment (40% soil + 40% compost + 20% charcoal) reaches 13.60% increase in plant height at age 21, number of leaves age 21 (14,28%), leaf area (59,74%), stem diameter (16,08%), fresh weight total (50%), dry weight total (89,56%) compared to KA0 (100% soil).
Halaman Depan JAT Vol. 10, No. 1, Januari 2021 Pengelola JAT
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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Halaman Depan JAT Vol. 10, No. 1, Januari 2021
Pendugaan Produksi Padi Menggunakan Citra Sentinel-2A di Kabupaten Tabanan I MADE ALIT WIRANATHA; 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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Estimation of Rice Production Using Sentinel-2a Image in Tabanan Regency Rice is strategical commodities because rice is a primary food in Indonesia. Thus, the estimation of rice production becomes crucial to do before the time of harvest to determine the availability of food. The objectives of this study were (1) developing of estimation equation model using Sentinel-2A imagery, (2) estimating rice field production using Sentinel-2A imagery, and (3) testing the accuracy of rice production estimation results using images Sentinel-2A. The research area is located in Tabanan Regency. Analysis of the research is done by the analysis of the single band and vegetation indices of Sentinel-2A satellite imagery. Estimation model of rice production developed by finding out the relationship between the satellite imagery data and the rice production data. Finally, accuracy test of the rice production estimation model is done using t test and regression analysis. The result of the study shows that the Normalized Difference Vegetation Index (NDVI) has the best relationship with the rice age and then used for the rice production estimation. The equation of rice production estimation is y = 7,7429ln (x) + 11,147, where y is the rice production in ton/ha and x is the value of NDVI of Sentinel-2A imagery in rice age range of 57 to 67 day after transplanting. The results of the accuracy test showed that the model obtained is suitable for estimating rice production with the accuracy level of 84,59% and a standard error of estimated production of ± 0,7463 ton/ha. Based on the research results, it can be concluded that the Sentinel-2A satellite imagery can be used to estimate the rice production with the enough accuracy. The results are expected to be a reference in estimating rice production in Tabanan Regency.
Pengaruh Jarak Tanam dan Mulsa Jerami Padi terhadap Pertumbuhan dan Hasil Tanaman Jagung (Zea mays L.) MUHAMMAD HATTA NUGROHO; I PUTU DHARMA; NI MADE TRIGUNASIH
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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The Effect of Spacing and Mulching of Rice Straw on Growth and Yield of Corn (Zea mays L.) Corn is the second staple food after rice in Indonesia. Corn as an energy source has advantages compared to other feed ingredients. This research aims to determine the effect of spacing and mulching of rice straw on the growth and yield of corn. This study used a randomized block design (RAK) with the allocation of factorial treatment. The treatment used consisted of 2 factors. (J1) spacing of 50 cm x 50 cm, (J2) spacing of 75 cm x 25 cm, (M0) straw mulch 0 tons/ha, (M1) straw mulch 10 tons / ha, (M2) straw mulch 20 tons/ha. Combination treatments obtained 6 treatments namely; M0 J1, M0 J2, M1 J1, M1 J2, M2 J1 and M2 J2. Each combination treatment was repeated 4 times, so there were 24 study plots. The treatment of spacing significantly affected the weight of dry seeds/m2, very significant on the number of fobs/m2, LAI (Leaf Area Index), fresh weed weight/m2 aged 8 and 12 mst. The spacing of 75 cm x 25 cm resulted in the weight of dry seeds/m2, which was 1.04 kg, which was 20% higher than the spacing of 50 cm x 50 cm 0.83 kg. Rice straw mulch treatment had a significant to very significant effect on the observed variables except 10 mst soil water content, leaf/plant chlorophyll content, number of cobs/m2, and ear diameter. Giving rice straw mulch 20 tons/ha resulted in dry seed weight/m2, which was 1.07 kg 33% higher than without mulch 0.72 kg. The interaction of plant spacing with rice straw mulch has a significant effect on LAI and is very significant on the weight of fresh weed/m2 ages 8 and 12 mst. The interaction of 50 cm x 50 cm spacing with 20 tons/ha rice straw mulch obtained the best results but was not significantly different from the treatment of 75 cm x 25 cm with 20 tons/ha of rice straw mulch.
Pemetaan Lahan Sawah Berbasis Sistem Informasi Geografis di Subak Petangan dan Subak Pakel II, Desa Ubung Kaja, Kecamatan Denpasar Utara DANIEL VALENTINO SIRAIT; I GUSTI PUTU RATNA ADI; IDA BAGUS PUTU BHAYUNAGIRI
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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Mapping of Subak Rice Fields Based on Geographical Information Systems in Petangan Subak and Pakel II Subak in Ubung Kaja Village, North Denpasar District Subak Petangan and Subak Pakel II are rice fields that have the potential to experience land use change. Based on data from the Central Statistics Agency (BPS) of Bali Province in 2017, the area of ??rice fields in Denpasar City has decreased by an average of 31.86 ha/year or decreased by around 1.28% per year. It is feared that it will experience a decline in the next 5 years. To anticipate further land use changes, a Regional Regulation (Perda) is required for the Protection of Subak Land as an LP2B Area, and is set forth in a Detailed Spatial Plan (RDTR). The purposes of research: knowing the area of ??subak Petangan and Subak Pakel II rice fields, knowing the subak designated in the RTHK area, making a GIS based information database on the potential of subak. According to the RTRW for the City of Denpasar (2011-2031), RTHK in urban areas is at least 30% of the city area. The area of ??Subak Pakel II which is in the RTHK of Denpasar City is 28.3 ha and is designated as a sustainable subak. Based on this, it is necessary to carry out a mapping of paddy fields in Subak Petangan and Subak Pakel II so as to facilitate planning, implementation, monitoring and evaluation of LP2B. The digitization results show that the area of ??Subak Pakel II is 49 ha, while the area of ??Subak Petangan is 36 ha. The area of ??subak rice fields in the RTHK area is 35.6 ha, namely in Subak Pakel II. The area of ??subak non-rice fields in Subak Pakel II is 7.3 ha. Subak land area that is not in the RTHK area is in Subak Pakel II, which is 21 ha.

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