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All Journal Agrotrop : Journal on Agriculture Science International Journal of Biosciences and Biotechnology Buletin Udayana Mengabdi E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology)
I Wayan Dana Atmaja
Program Studi Agroekoteknologi Fakultas Pertanian Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science

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Analisis Kualitas Kompos Limbah Upacara Agama Hindu di Denpasar dengan EM4 sebagai Dekomposer I MADE WERAYOGA; I WAYAN DANA ATMAJA; A A NGURAH GEDE SUWASTIKA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.5, No.2, April 2016
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Analysis of the Compost Quality of Hindu Ceremony Wastein Denpasar with EM4 as a DekomposerThe aim of this research was to find out best quality of compost made of by the waste of Hindu ceremony in Denpasar, cow dung, and bran, with EM4 as a decomposer. The research was conducted on November 2014 until June 2015, located at pegok experimental field, faculty of agriculture, Udayana university. The design used was Randomized block design with two factors, the first factor was combination the waste of Hindu ceremony and the second factor was the decomposer consisted of without decomposer and with EM4 with dose of 200 mL (dilution 20 mL EM4 + 10 g sugar + 1 liter water). Compost quality was known by counting the total bacterial population, total fungi population, and respiration, measuring the temperature, water content, weight, structure, smell, color, measuring the content of total N, total P, total K, C-organic, the C/N ratio, and the pH. The result of research based on statistical analysis show that interaction impact between combination the Waste of Hindu ceremony and decomposer only have real influence on the parameter of total bacterial population, total fungi population, N-total, and P-total of compos. The research resulting in several conclusions that is the treatment of 75% the waste of Hindu ceremony + 15% cow dung +10%bran presenting the best quality of compost showed by the height of total bacterial population ( 17,38 x 108 cpu g-1 of compost), highest N-total (1,82%), the lowest content of C-organic (10,39%), highest P-total (83,71 mg/100g).
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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Abstract

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).
Analisis Kualitas Kompos Limbah Persawahan dengan Mol Sebagai Dekomposer I GUSTI AYU PUTU PRATIWI; I WAYAN DANA ATMAJA; NI NENGAH SONIARI
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 The Analysis of Compost Quality of Paddy Field Waste with Local Microorganism as a Decomposer The aim of this research is to find out the best quality of compost made of straw material, chaff, and cow dung, with Local Microorganism as a decomposer. The research was conducted on November 2012 until January 2013, located at Gapoktan Sarwa Ada, Banjar Tebuana, Village of Taro, Sub-district of Tegalalang, Regency of Gianyar. The design used was Randomized Block Design with two factors, the first factor was combination package of paddy field waste (K) that was K1, K2, K3, K4 and K5, and the second factor was the administration of decomposer (D) consisted of without the decomposer (D0) and with Local Microorganism decomposer of stale rice with dose of 200 mL (D1). Compost quality was known by counting the total bacterial population, total fungi population, and respiration, measuring the temperature, weight, water content, the smell, structure, color, measuring the content of C-organic, N-total, the ratio of C/N, pH, and the content of salt. The result of research based on statistical analysis shows that interaction impact between combination packages of paddy field waste (K) and the administration of decomposer (D) only have real influence on the parameter of total bacterial population, C-organic and N-total of compost. The research resulting in several conclusions that is the treatment of K5D1 presenting the best quality of compost showed by the height of total bacterial population (8.95 x 108 spk g-1 of compost), the lowest content of C-organic (22.37%), highest N-total (1.76%) and fairly good C/N compost ratio (16.99). Compost pH value also shows a good result (6.49), with the content of salt in compost shows the very low value (0-2%) and the physical characteristic of best compost that is having brown blackish color, smell of soil, and crumb structure. Key words : Local Microorganism, paddy field waste, compost quality
Pengaruh Ukuran Biochar Bambu dan Dosis Pupuk Urea terhadap Efisiensi Pupuk dan Hasil Tanaman Sawi Hijau (Brassica juncea L.) pada Tanah Berpasir ANAK AGUNG GDE PREHATRESNA ADI ASMARA; I WAYAN DANA ATMAJA; ANAK AGUNG NGURAH GEDE SUWASTIKA; ANAK AGUNG ISTRI KESUMADEWI
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.p05

Abstract

The Effect of Bamboo Biochar Size and Urea Fertilizer Dosage on Fertilizer Efficiency and Yield of Green Mustard (Brassica juncea L.) in Sandy Soil. Biochar is charcoal produced from incomplete combustion (carbonization). Biochar is a soil amendment agent that has long been known in agriculture which is useful for increasing soil productivity. This study aims to determine the effect of bamboo biochar size and urea fertilizer dosage on the efficiency of urea fertilizer and yield of green mustard (Brassica juncea L.). This research was conducted from May 2020 to September 2020 at the Experimental Garden of the Faculty of Agriculture, and at the Laboratory of Soil and Environmental Sciences, Faculty of Agriculture, Udayana University. The research design used was a completely randomized design (CRD) with 2 factorials and 3 replications. The treatment factors consisted of P0 = 0kg urea (control) (0 grams / pot), P1 = 100kg urea / ha (0.2 grams / pot), P2 = 200kg urea / ha (0.4 grams / pot), P3 = 300kg urea / ha (0.6 gram / pot), B1 = 0.25-2.00 mm, B2 = 2.38-2.83 mm, B3 = 2.83-3.36 mm. The parameters observed were levels of ammonium, nitrate, soil pH, microbial population, soil respiration, crop yields including fresh weight and oven dry weight of the plant. The results of the analysis showed that the effect of biochar and urea fertilizers interacted very significantly with the parameters of the microbial population and had no significant effect on the parameters of ammonium, nitrate, soil pH, soil respiration, plant fresh weight, plant dry weight, root fresh weight, root dry weight and efficiency. fertilizer. Biochar treatment has a significant effect on biological factors and fertilizer treatment affects soil chemical properties, crop yields are influenced by a single factor.
Dinamika Amonium dan Nitrat Pada Lahan Sawah Semi Organik untuk Tanaman Padi Lokal dan Hibrida di Subak Jatiluwih Kabupaten Tabanan KHOSNUL KHOTIMAH; ANAK AGUNG NGURAH GEDE SUWASTIKA; I WAYAN DANA ATMAJA
Agrotrop : Journal on Agriculture Science Vol 10 No 1 (2020)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.824 KB) | DOI: 10.24843/AJoAS.2020.v10.i01.p05

Abstract

Dynamics Of Ammonium And Nitrate In Semi Organic Rice Fields For Local And Hybrid Rice Plants In Subak Jatiluwih, Tabanan Regency. The study was conducted to determine the dynamics of ammonium and nitrate and time subsequent fertilization in paddy fields with local and hybrid rice. Soil and water samples in two replications were taken each the two paddy fields periodically, namely during the tillage (DTT), 0, 7, 14, 21, 28, 42, 56, 70, 84, 98, and 112 days after planting (DAP). Ammonium and nitrate levels were analyzed by Macro Kjeldahl method. The results showed that the dynamics of ammonium and soil nitrate were different in two rice varieties. The highest ammonium content of local rice at the age of 7 DAP rice and the highest nitrate content at age 14 DAP. Ammonium and nitrate levels are highest in hybrid rice fields at 28 DAP rice age. The lowest ammonium and nitrate levels in two different varieties of rice land, namely the lowest local rice varieties at the age 28 DAP, whereas in hybrid rice land at age of 98 DAP. The results of this study indicate that supplementation of urea can be carried out at the age of 21 and 98 DAP for local rice varieties, and at the age of 14 DAP and 42 DAP for hybrid rice varieties.
Pengujian Rekomendasi Pemupukan Spesifik Lokasi dan Sistem Tanam terhadap Hasil Padi Sawah di Desa Temega, Kecamatan Abang, Karangasem I NYOMAN PUJA; I WAYAN DANA ATMAJA; MADE SRI SUMARNIASIH
Agrotrop : Journal on Agriculture Science Vol 9 No 1 (2019)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.219 KB) | DOI: 10.24843/AJoAS.2019.v09.i01.p04

Abstract

Evaluation of Specific Location Fertilizer Recommendations and Plant System on Rice Yield Temega Village, Abang District, Karangasem. This study aims to determine the response of specific location fertilizer recommendations and planting system on rice yields in Temega Village, Abang District, Karangasem Regency. The method was used Factorial Randomized Block Design (RBD). The treatment tried consisted of two factors. The first factor was fertilization recommendations (R): R1 = location specific recommendation (250 kg Urea/ha, 100 SP36/ha and 50 kg KCl/ha); R2 = Location specific recommendation + Compost (230 kg Urea/ha, 100 SP36/ha, 50 kg KCl/ha + 5 t compost/ha), R3 = Farmer method (300 kg Urea/ha, 125 SP36/ha and 75 kg KCl/ha). The second factor was planting system (TL) : T = Tegel (20 cm x 20 cm) and L = Jajar Legowo 2 : 1. Combination of treatments into 6 treatments and each treatment was replicated 4 times so that there were 24 plots of research. The results showed that location specific fertilizer recommendations resulted in oven dry grain weight m-2 of 0.84 kg compare to that of farmers (0.85 kg). The application of location specific fertilizer recommendations can save as much as 50 kg Urea/ha, 25 kg SP36/ha and 25 kg KCl/ha. Jajar Legowo planting system can produce grain contain m-2 of 1.14 kg or an increase of 78.13% compared to tegel planting system (0.64 kg).
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

Abstract

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.
Peranan Bahan Organik dalam Peningkatan Efisiensi Pupuk Anorganik dan Produksi Kedelai Edamame (Glycine max L. Merill) pada Tanah Subgroup Vertic Epiaquepts Pegok Denpasar I NYOMAN DIBIA; I WAYAN DANA ATMAJA
Agrotrop : Journal on Agriculture Science Vol 7 No 2 (2017)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (267.45 KB) | DOI: 10.24843/AJoAS.2017.v07.i02.p08

Abstract

Role in Increasing Efficiency Organic Fertilizers Inorganic Fertilizer and Soybean Production Edamame (Glycine max L. Merill) on The Ground in Subgroup Vertic Epiaquepts at Pegok Denpasar. The study entitled "The Role of Organic Materials In Inorganic Fertilizer Efficiency Improvement and Edamame Soybean Production In subgroup Vertic Epiaquepts" conducted from July to October 2016 at the Faculty of Agriculture Experimental Farm UNUD to design a randomized block design (RBD). The treatments tested were: 1) P0 = control (without fertilizer); 2) P1 = standard NPK fertilizer (300 kg/ha Phonska); 3) P2 = 5 t/ha petroganik + 50% NPK 4) P3 = 10 t/ha petroganik + 50% NPK; 5) P4 = 15 t/ha petroganik. The results showed that the treatment tested significantly affected parameters: plant height maximum, the number of branches/clump, number of pods containing/clump,the percentage of pods containing/clump, production pods contain/plot, heavy berangkasan fresh/clump, and the estimated production of peas contains /ha. Estimated production of pods contain/ha in a row from the highest are: P3 (22.45 tonnes/ha), P4 (17.73 tonnes/ha), P2 (17.01 tonnes/ha), P1 (16.63 tons/ha), and P0 (10.80 tonnes/ha). Agronomic efficiency indicated by the RAE in each treatment were tested in order are: P3 = 199.83%, P4 = 118.87%, P2 = 103.50%. When compared with the standard fertilizer treatment (P1), the P3 increased efficiency of 99.83%, in P2 by 3.5%, and in P4 amounted to 18.8%.
Jumlah Spora dan Genus Endomikhoriza pada Tanah Monokultur dan Tumpangsari Jeruk Siam (Citrus nobilis Tan.) dengan Tanaman Sayuran di Desa Sekaan Kecamatan Kintamani CHARLES ALEXANDER YAWAN; ANAK AGUNG ISTRI KESUMADEWI; I WAYAN DANA ATMAJA
Agrotrop : Journal on Agriculture Science Vol 7 No 1 (2017)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (500.456 KB) | DOI: 10.24843/AJoAS.2017.v07.i01.p04

Abstract

The Spores and Genus Number of Endomikoriza on soil of Citrus Orchard Soil in Monoculture (Citrus nobilis Tan.) and Intercrops with Vegetables in Sekaan Districts Kintamani. Endomycorrhiza is a wide spread fungi that develop symbiotic association with numerous plant types except for Brassicaceae and Chenopodiaceae. Endomycorrhizal fungi colonized plants through spore or hypha propagation. The spore number of endomycorrhiza was studied in the soil of orange orchard in the Bali’s center of orange fruit production located in Sekaan Village, Bangli District during November 2015 – January 2016. The orange plants were cultivated in monoculture and intercropped with the following vegetable crops : cucumbers (Cucumis sativus L), tomatoes (Solanum lycopersicum), mustard greens (Brassica rapa subsp. Pekinenshis), and cabbage (Brassica oleracea var. capitata). Three replications of soil samples were taken purposively and separately proceed for laboratory analysis. The following parameters were measured: total spore number and genus types of endomycorrhiza, the content of soil available-P, soil pH, and soil organic-C. The experiment result showed that monoculture system had significant higher number of VAM spores (347 spores) compared to intercropping (178 – 224 spores). Most of VAM spore had small size ranging on 45 – 105 ?m (60,80%) followed by 106 – 249 ?m (33,82%) and the least were ? 250 ?m spores. There were two MVA genus present in the soil of both cropping patterns which grouped to Acaulospora (3 morphotypes) and Glomus (11 morphotypes). The highest number of VAM spores belongs to Glomus.The soil properties that closely related to VAM spore number was soil pH (=0.66**).
Genus Alga pada Lahan Sawah Organik yang Ditanami Padi Lokal dan Inhibrida di Subak Jatiluwih, Tabanan SAWIDYA FITRIYANI; I WAYAN DANA ATMAJA; NI NENGAH SONIARI
Agrotrop : Journal on Agriculture Science Vol 9 No 2 (2019)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (692.665 KB) | DOI: 10.24843/AJoAS.2019.v09.i02.p02

Abstract

Algae Genus in Organic Rice Fields Planted with Local and Inhibrida Rice in Subak Jatiluwih, Tabanan. The abundance of microalgae in rice fields, especially microalgae from Cyanophyta division that are capable of fixing nitrogen, is very important helping maintain soil fertility. The aim of this study was to find out the genus of algae in organic rice fields of Subak Jatiluwih, Tabanan. The research was conducted from September 2018 to April 2019. Sampling was done in Subak Jatiluwih. Algae breeding were carried out at Biology and Physics Laboratory, Faculty of Agriculture, Udayana University. This research method uses descriptive quantitative. The implementation of the research included the determination of location, soil and water sampling, identification of algae, and analysis of algae genera. Enrichment algae was carried out using the MPN method, results of the analysis of algae genus were found in 37 genera from 3 divisions i.e Chlorophyta, Cyanophyta and Chrysophyta. Descriptive quantitative method Most Probable Number (MPN) calculation conclude that there are not much different from the Local and Inhibrida rice fields. The maximum population algae of local rice fields is 1.100 cell g-1 and Inhibrida rice fields is >1.100 cell g-1 of land. The minimum population is 3,6 cell g-1 of land in local rice fields, and 9,2 cell g-1 of land in Inhibrida rice fields.
Co-Authors A.A.A.A. S. Sunari A.A.N.G. Suwastika ANAK AGUNG GDE PREHATRESNA ADI ASMARA Anak Agung Istri Kesumadewi Anak Agung Ngurah Gede Suwastika ARDHIKA FAHRIZA HARVIANTO BINTANG PURNIASARI CHARLES ALEXANDER YAWAN DWI PUTRA DARMAWAN GUSTI AGUNG AYU RATIH SARIDEVI I A. SUTY ADNYANI I DEWA MADE ARTHAGAMA I GUSTI AYU PUTU PRATIWI I Made Mega I MADE WERAYOGA I N. DIBIA I Nyoman Dibia I Nyoman Puja I WAYAN BUNADA I WAYAN NARKA I.N. `Dibia ID .OKA WIDYARSHANA IDA AYU YADNYA SENI IDA BAGUS PUTU WAHYU PERMANA KHOSNUL KHOTIMAH KOMANG MELATI NUSANTARI KUSUMA SINDA MADE SRI SUMARNIASIH MEGA I M N. W. S. Sutari Ni Luh Kartini NI MADE INDRA PUSPAWATI Ni Nengah Soniari NI PUTU NENA LUSIANA NI PUTU SRI SUTARI SAWIDYA FITRIYANI SHERLEYTA PARIPURNANI STEFANIA DESYANI DERGONG T. Kusmawati