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All Journal Agrotrop : Journal on Agriculture Science AGRITROP International Journal of Biosciences and Biotechnology Buletin Udayana Mengabdi E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Advances in Tropical Biodiversity and Environmental Sciences Nandur

I WAYAN NARKA

Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

Author-ID : 328343

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Environmental Science Veterinary

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Pengaruh Interval Pemberian Air melalui Irigasi Tetes (Drip Irrigation) dan Pupuk Mineral Plus terhadap Produksi Anggur pada Lahan Kering di Kecamatan Gerokgak Kabupaten Buleleng MERIT, I NYOMAN; NARKA, I WAYAN
AGRITROP Vol. 26, No. 1 Maret 2007
Publisher : AGRITROP

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A field experiment of drip irrigation was set up in the field on dry land farming at Patas Gerokgak, Buleleng.The aim of the experiment was to demonstrate to the local farmer about the beneficial goal of drip technology inorder to gain a high efficiency of water application. Three intervals of water application, i.e. : 2 days, 4 daysand 6 days (I1, I2, I3) in drip technique, and application of Mineral Plus fertilizers (M1) and without Mineral Plusfertilizers (M0) was observed in a nested block design. Bali grape varieties were used as an indicator. Parameterswhich were observed in second year experiment included the water distribution as indicated by soil water contentat 0 – 15 cm depth, and soil water matrix potential (0 – 30 cm depth) which indicated by Loctonic tensiometer.Plant growth was observed by measuring fresh and dry weight biomass and diameter of grape stalk, regularly. Theresult of the experiment showed that, soil water content of 0 – 15 cm depth was not significantly affected by thetreatment. Plant growth as indicated by fresh weight of biomass, dry weight of biomass and diameter of grape stalkwere not significantly affected by the treatment There were no significant differences between treatments on freshand dry weight biomass, dry biomass and diameter of grape stalk so that the yield of grape as indicated by numberbunch of grape per plant, fresh weight of grape per bunch, fresh weight of grape per plant, dry weight of grapeper bunch, number of grape per bunch were not significantly affected by the treatment. Yield quality as indicatedby volume of grape per pellet, sugar content of grape and colour of grape were no significant differences betweentreatments.

HUBUNGAN ANTARA TEKSTUR TANAH DENGAN KADAR FOSFAT, KALIUM DAN KAPASITAS TUKAR KATION TANAH DARI BEBERAPA CONTOH TANAH DI BALI NARKA, I WAYAN
AGRITROP Vol. 26, No. 2 Juni 2007
Publisher : AGRITROP

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A laboratory experiment about correlation of texture (sand, silt and clay fractions) to phosphate (P), potassium (K) content and Cation Exchange Capacity (CEC) of soil was carried out at Soil Laboratory Faculty of Agriculture Udayana University in May until October 2006. Soil samples were taken from regencies of Bali and analyzed some properties of soil such as: soil texture, potassium, available P content and CEC of soil. Soil texture was analyzed with pipet method, potassium content with Bray I method, available P content with Bray I method and CEC with NH4OAc.saturation method. Pearson correlation method was used in this experiment to study the correlation of sand, silt and clay fractions to potassium, available P content and CEC of soil. The result of the experiment showed that, there are highly significant correlation between sand fraction and potassium, available P content and CEC of soil with coefficient correlation (r) of : -0,427**, -0,314* and -0,719** , respectively. Correlation between clay fraction and potassium content, CEC of soil with coefficient correlation (r) of : 0,430** and 0,661**, respectively. Between silt fraction and potassium, available P content and CEC of soil were not significant correlation, with coefficient correlation (r) : 0,127; 0,257 and 0,256, respectively . Between potassium content and CEC of soil showed a highly significant correlation with coefficient correlation (r) = 0,383**. Step wise analyzed showed that , potassium content was significantly influenced by clay fraction, while available P and CEC of soil were significantly affected by sand

EVALUATION OF LAND SUITABILITY FOR INCREASING PRODUCTIVITY IN DEGRADED UNDA WATERSHED, DISTRICT OF KARANGASEM, BALI Ni Made Trigunasih; I Nyoman Merit; Wiyanti Wiyanti; I Wayan Narka; I Nyoman Dibia
International Journal of Biosciences and Biotechnology Vol 5 No 1 (2017)
Publisher : Central Laboratory for Genetic Resource and Molecular Biology, Faculty of Agriculture, Udayana University in cooperation with Asia-Oceania Bioscience and Biotechnology Consortium (AOBBC)

Evaluation of land suitability to increase the productivity of degraded lands in the Unda watershed aims: providing a database of land suitability for land use planning in support of sustainable agricultural development, providing spatial information, and recommendations in accordance with the land use plan of inhibiting factors that exist. Identification of characteristic land quality evaluation survey carried out by the method of land with exploration area of research followed by soil sampling at some sample of land units. Land suitability classification using the criteria of the Technical Guidelines for Evaluation of Land For Agricultural Commodities of Soil Research Institute (2003) is by matching between the haracteristics of the land with the requirements of growing plants was evaluated. Types of agricultural crops that are evaluated include plantation crops and food crops hotikultura fruits. Suitability actual land (land suitability based on survey data) are mostly classified as unsuitable (N), and marginally suitable (S3). Qualities/characteristics as the land that is the main limiting factor, among others: quality of land erosion, slope, water availability, temperature, rooting media (soil texture and coarse material). Sustainable land use planning can be recommended with agroforestry, accompanied by vegetative conservation measures because it is cheaper and easier to be carried out by farmers. Recommended cultivation effort is a combination of timber plants with horticultural crops of fruits with the provisions of at least 40% must be enclosed timber. Plant timber that can be developed between the other plants that are not too heavy canopy.

PEMBUATAN DAN PENGUJIAN KUALITAS KOMPOS DI SUBAK TIBUBIYU KECAMATAN KERAMBITAN KABUPATEN TABANAN I.W. Narka; I.N. `Dibia; T. Kusmawati; I.W.D. Atmaja
Buletin Udayana Mengabdi Vol 17 No 1 (2018): Buletin Udayana Mengabdi
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Devotion in the form of training of composting with existing materials around the farmers using 3 starter thatis EM4, MOL and Nitrobacter TJ has been done in Subak Tibubiyu, Kerambitan Tabanan. After subsequentcomposting is testing the quality of the three types of compost produced. The topic of composting andcompost quality testing is selected based on the farmers' demand because it is pointed out by the organicfertilizer farmers that the packaging is obtained in the form of aid, the quality is not good. Is a problem alsoin terms of transport to the planting area? Therefore, it is necessary to make compost near the farmer'scultivation area. In improving the quality of compost has been tried to make compost with 3 types of starterand then done the quality of compost testing. Farmers welcomed this activity and were interested to find outwhich type of starter was best composted. After fermentation for 6 weeks the compost has matured, then thequality of the compost is tested. The results of compost testing in the laboratory show that the best compostquality is compost with EM4 starter. With the success of farmers to make their own good quality compostfertilizer, the acceleration of organic fertilizer will be done. The use of compost fertilizer can reduce the useof chemical fertilizers and maintain the sustainability of the soil.

PENERAPAN KOMBINASI PUPUK ORGANIK DAN PUPUK KIMIA UNTUK MEMPERBAIKI KUALITAS TANAH SAWAH DI SUBAK TIBUBIYU KECAMATAN KERAMBITAN KABUPATEN TABANAN I.W. Narka; T. Kusmawati; I.N. Merit; I.N. Dibia
Buletin Udayana Mengabdi Vol 16 No 3 (2017)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

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Pengabdian kepada masyarakat dengan judul Penerapan Kombinasi Pupuk Organik dan Pupuk Kimia untuk Memperbaiki Kualitas Tanah Sawah di Subak Tibubiyu Kecamatan Kerambitan, Kabupaten Tabanan telah dilakukan. Petani menggunakan pupuk anorganik secara berlebihan terus menerus tanpa adanya masukan bahan organik dapat menurunkan kualitas tanah. Sementara penggunaan pupuk organic saja tanpa menggunakan pupuk kimia dapat menurunkan hasil secara drastis. Untuk menjaga kualitas tanah dan produksi yang baik perlu diberikan kombinasi pupuk organic dan pupuk anorganik. Pelaksanaan kegiatan diawali dengan cara mengumpulkan pemuka masyarakat dan anggota subak, selanjutnya diberikan penyuluhan tentang pemupukan dengan menggunakan kombinasi pupuk organik dan pupuk kimia. Selain penyuluhan juga dibuat demplot pemupukan dengan menggunakan kombinasi pupuk organic dan pupuk anorganik. Hasil kegiatan menunjukkan bahwa petani dan tokoh masyarakat menyambut baik kegiatan ini. Petani sangat antusias dengan materi penyuluhan. Petani tertarik menggunakan kombinasi pupuk ini dengan membuat pupuk organic yang berasal dari bahan yang ada di sekitar mereka seperti pupuk kandang, jerami dan sampah organic. Penggunaan kombinasi pupuk ini dapat mengurangi penggunaan pupuk kimia sehingga dapat menurunkan biaya produksi.

Karakteristik Terasering Lahan Sawah dan Pengelolaannya di Subak Jatiluwih, Kecamatan Penebel, Kabupaten Tabanan DEVI LEORENSIA BOKINGS; I NYOMAN SUNARTA; I WAYAN NARKA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.2, No.3, Juli 2013
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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ABSTRACT The Characteristic of Wetland Terracing in the Hillside Area and Its Management at Subak Jatiluwih, Sub-district of Penebel, Regency of Tabanan Subak Jatiluwih has a characteristic of rice field terracing which sufficiently taken into account as a terrace model and rice field management in the hillside area. In order to get the terrace model along with rice field management in the hillside area required a research regarding the subak land terracing characteristic in the hillside area along with its management. The research carried out by the method of survey and soil samples taken were analyzed in the laboratory the soil, and data management of terrace land were obtained through interviews to farmers landowners of sample. The research aims to find out the terrace along with the form of its land management, which is in the form of cropping pattern and irrigation system existed at Subak Jatiluwih, Sub-district of Penebel, Regency of Tabanan. The result of research shows that the steeper the class of hillside’s slope is, the narrower its terrace’s width, the higher its terrace’s height, the wider its rice field’s width, the higher its rice field’s height, the lower its inner rice field’s height, and the greater its rice field’s slope angle to its vertical plane. The cropping pattern being used at Subak Jatiluwih is cropping pattern of paddy-paddy-paddy and cropping pattern of paddy-paddy. The irrigation system applied is continuous simultaneously flowing system or continuous flow which does not need too many personnel to operate it. Keyword : Slope, Bench Terrace, Cropping Pattern, Irrigation System

Pengaruh Sistem Pengolahan Tanah dan Penggunaan Mulsa Terhadap Populasi Mikroorganisme dan Unsur Hara Pada Daerah Rhizosfer Tanaman Kedelai (Glycine Max L.) IDA BAGUS PUTU WAHYU PERMANA; I WAYAN DANA ATMAJA; I WAYAN NARKA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.6, No.1, Januari 2017
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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The Effect of Tillage System and Mulch Use for The Population of Microorganisms and Nutrients in The Soybean (Glycine max L.) Rhizosphere AreaThis study aims to determine the effect of tillage systems and mulching to microorganisms population change and nutrients in the rhizosphere area of the soybean crop. This study began in January 2014 until April 2014. Soil sampling conducted in Sedap Malam Street South Denpasar, while the analysis was conducted in the Laboratory of Soil Science Udayana University, Phytopathology Laboratory and Analytical Laboratories Udayana University. The study design was Randomized Block Design where the first factor is the Soil Treatment System Conventional processing system and no-tillage, while the second factor is the use of rice straw mulch, plastic mulch, and without mulch. Each treatment was repeated 5 times.Cultivation systems and the use of mulch, affect the population of bacteria in the rhizosphere of soybean plants. TP namely (24.4 x 107 cfu g-1), followed by treatment with KT (23.4 x 107 cfu g-1), TJ (18.6 x 107 cfu g-1), KJ (15.9 x 107 cfu g-1) , TT (9.4 x 107 cfu g-1) and the lowest is the KP (9 x 107 cfu g-1) .The system tillage and the use of mulch, affect the population of fungus in the rhizosphere of soybean plants. Total bacteria highest TP (25.8 x 107 cfu g-1), KT (24.8 x 107 cfu g-1), TJ (19.2 x 107 cfu g-1), KJ (17.2 x 107 cfu g-1), TT (10.8 x 107 cfu g-1) and the lowest is the KP (10.4 x 107 cfu g-1) .The system tillage and mulching affect the content of macro nutrients in the rhizosphere of plants soy. Highest nutrient C TT (14.67) and the lowest KJ (5.19). The highest N elements TJ (0.27) KT lowest (0.12). The highest P nutrients (114.72) KP lows (75.76). K highest nutrient TT (2721.7) and the lowest KP (1085.04). The highest Ca nutrients in TJ (8930.78) and the lowest KJ (3034.85). The highest nutrient S TP (0.0495) and the lowest TJ (0.0257). And nutrient highest Mg TJ (1566.82) and KP (529.12) .The system tillage and mulching different effect on the nutrient content of N, P and K on soybean plant tissue that showed significantly different interactions between each each factor. The highest nutrient N in KP (1.88) and the lowest in the TT (1.35). The highest P nutrients in TJ (288.97) and the lowest in the TT (211.78). The highest nutrient in KP (5479.81) and the lowest in the TJ (3565.56).

Uji Efektivitas Jenis Dekomposer pada Proses Pengomposan Sampah Organik di Kota Denpasar TAUFIQ WARDANA; KETUT DHARMA SUSILA; I WAYAN NARKA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.11, No.1, Januari 2022
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Test the Effectiveness Some Kinds of Decomposers on the Organic Waste Composting Process in Denpasar City This study aims to determine the quality of compost and decomposition rate of compost mix raw materials by using several kinds of decomposers. This research was conducted from November 2020 to February 2021 at the Sari Sedana Garbage Depot, on Bung Tomo IV Street number 1 in Denpasar, and for the analysis of compost samples located at the Soil Laboratory Agricultural Faculty of Udayana University. The design used in this study was a randomized block design. The compost mix raw materials (CM) consisted of 40% organic waste, 40% cow dung, 10 % husk charcoal, 8 % sawdust, 2 % dolomite, and decomposers (according to each treatment) + molasses. There were six treatments of various decomposers with four replications consisting of P0 (control): 100% organic waste (15 kg), P1: CM + EM4 and molasses, P2: CM + Beka and molasses, P3: CM + BA-5 and molasses, P4: CM + Biofit and molasses, P5: CM + Biogenic and molasses. The observed compost quality parameters included: C-organic, N-total, C/N ratio, P-available, K-available, moisture content, and pH. Data were analyzed using analysis of variance (ANOVA), followed by the Duncan’s Multiple Range Test 5% difference test. The results of the research showed that the use of decomposers had a very significant effect on the quality of the compost produced and composting process rate. The rate of decomposition and the best compost quality according to SNI 19-7030-2004 were shown by the P1 treatment with the EM4 as a decomposer.

Analisis Status Kerusakan Tanah Berbasis Sistem Informasi Geografis (SIG) di Daerah Aliran Sungai Yeh Ho Kabupaten Tabanan ALDINO RYAN FAUZI; NI MADE TRIGUNASIH; I WAYAN NARKA
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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Soil Damage Status Analysis Based on Geographical Information System (GIS) In Yeh Ho Watershed Tabanan Regency The study aims to identify land damage status at DAS Yeh Ho, map land damage status at DAS Yeh Ho, and provide improvements soil condition recommendations on DAS Yeh Ho. Research methods is a survey method, land unit map is made for field sampling purposes. Based on the results overlay slope map, land type map, rainfall map and usage map get 13 samples. Results of samples that have been collected in the analysis in the laboratory to determine the content value of content weight, solum thickness, surface kerocks, fraction composition, total porosity, electrical power, pH, and permeability. This research shows that there is a land use influence on soil damage status. The results of the research on the state of soil damage is good in SLH 1, 2, 5.7, 8, and 12 with N symbol, the data of damaged soil damage status is in SLH 6, 10 and 13. Mild damaged Status in SLH is caused by texture and permeability with symbol R. I – F, p. SLH 3, 4, 9, and 11 entered into mild damaged category, permeability with symbol R. I – P. Recommendation results of this research is the improvement of the permeability parameters by means of planting annual crops and the addition of organic materials.

Pengaruh Abu Vulkanis Gunung Agung dan Pupuk Kompos terhadap Beberapa Sifat Tanah dan Hasil Kacang Tunggak (Vigna unguiculata (L.) Walp.) I WAYAN NARKA; I NYOMAN DIBIA; I WAYAN DANA ATMAJA
Agrotrop : Journal on Agriculture Science Vol 11 No 2 (2021)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2021.v11.i02.p06

The Effect of the Mount Agung Volcanic Ash and Compost on Soil Properties and Yield of Tunggak Nuts (Vigna unguiculata (L.) Walp). The purpose of this study was to determine the effect of giving volcanic ash and compost as a soil amendment. The design used was a factorial randomized block design. The volcanic ash factor consisted of 3 levels: A0 = no volcanic ash, A1 = 15% volcanic ash and A2 = 30% volcanic ash. The compost factor consisted of 3 levels: K0 = without compost, K1 = 10 tons of compost ha-1, and K2 = 20 tons of compost ha-1. The combination treatments was repeated 3 times so that there were 27 observation units. Several parameters of soil properties and yield of tunggak nuts were studied to determine the effect of volcanic ash and compost as soil amendments. The results showed that the interaction between the treatment of volcanic ash and compost on the soil and plants was not significant, while the single treatment of compost had a significant effect on the growth and yield of tunggak nuts. The treatment of volcanic ash has not shown a significant effect, both on soil and on plant growth and yield.

Co-Authors AGUSTINA TANGKETASIK ALDINO RYAN FAUZI Boy Fernando Sagala DEVI LEORENSIA BOKINGS I DEWA MADE ARTHAGAMA I DEWA MADE ARTHAGAMA I Nyoman Dibia I NYOMAN MERIT I NYOMAN SUNARTA I Wayan Dana Atmaja I.N. Dibia I.N. Merit I.N. `Dibia IDA BAGUS PUTU BHAYUNAGIRI IDA BAGUS PUTU WAHYU PERMANA Jamhari Jamhari Ketut Dharma Susila Krisdianto Putra Sihombing Masana Frininta Sembiring NI MADE TRIGUNASIH NI MADE WIKARNITI Ni Nengah Soniari RENI ANDRIANI NAIBAHO T. Kusmawati TATIEK KUSMAWATI TAUFIQ WARDANA WIYANTI WIYANTI

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