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All Journal Agrotrop : Journal on Agriculture Science AGRITROP International Journal of Biosciences and Biotechnology Buletin Udayana Mengabdi Bumi Lestari E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Nandur

A.A.NYOMAN SUPADMA

Program Studi Agroekoteknologi Fakultas Pertanian Universitas Udayana Denpasar

Author-ID : 2952040

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

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Kajian Unsur Hara Tanah Sawah Untuk Menentukan Tingkat Kesuburan I NYOMAN PUJA; A.A. NYOMAN SUPADMA; I MADE MEGA
Agrotrop : Journal on Agriculture Science Vol 3 No 2 (2013)
Publisher : Fakultas Pertanian Universitas Udayana

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Study on Soil Nutrients in Rice Field to Determine Soil Fertility Status.Research of soilnutrients in rice field to determine soil fertilitystatus had been done on rice field in district Penebel,Tabanan regency.This study aimed to assess level of soil fertility status on rice field.The research wasconducted by survey and laboratory analysis. The study consists of several stages such as, the formationof the land unit based on the compilation maps of soil type, geology and slope.It’s obtained 11 landunits. Each unit tookone samples. The soil sample was analyzed for Cation Exchange Capacity andCation Saturated (NH4OAC extractional pH 7,0); N-Total (Kjeldhal); P-total and K-total (HCl 25% extraction); Salinity (EC), Organic matter(Wokly and Black)and pH (H2O)(1 : 2,5). The analysisproceseshave done at Soil laboratory, Faculty of Agriculture, Udayana University.The result oftheresearch show that status of soil fertilityon rice field at district Penebel, Tabanan regency are low1.478,551ha (29.16%), medium2.286,721 ha (63.83%), and high2.286,721 ha (6.01%).

Kajian Unsur Hara Mikro Tanah Untuk Peningkatan Produksi Pangan pada Lahan Sawah di Kecamatan Penebel, Tabanan A.A. NYOMAN SUPADMA; I MADE ADNYANA; I NYOMAN PUJA
Agrotrop : Journal on Agriculture Science Vol 3 No 1 (2013)
Publisher : Fakultas Pertanian Universitas Udayana

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Assessment of Micro Nutrient of Soil for Improving Food Production on Paddy Field in The District of Penebel, Tabanan Research of soil micro nutrient was carried out on paddy soil in district Penebel, Tabanan regency, starting July until October 2013, which was conducted by soil survey and laboratory analysis. The experiment consists of several stages such as the formation of the land unit based on the compilation maps of soil type, geology and slope, obtained 11 land units. Each unit taken some samples depending on the area, location and slope, so have got 50 soil samples. Soil samples were taken at a depth of 0-20 cm. Further, the content of micro nutrients Zn, Cu, Fe, Mn analyzed with EDTA extraction at Soil laboratory, Faculty of Agriculture, Udayana University. In addition it also analyzed of the soil macro nutrients content: total-N, available- P, available-K, C- organic matter, soil pH and salinity. Soil analysis showed that the micro nutrient content of Fe ranged from 59.672 to 66.382 ppm (classified as moderate), Mn ranged from 11.960 to 33.786 ppm (relatively low), Cu ranged from 5.426 to 23.204 ppm (very low to low), and Zn ranged from 1.818 to 9.058 ppm (very low to moderate). The paddy soil in the district Penebel, containing moderate of micronutrients Fe content and Mn contain relatively low; Cu content are very low to low; and Zn content are mostly very low to low. While the content of macro nutrient elements such as N and P are low to moderate, but the content of K is very high. C-organic content classified as moderate to high, and soil acidity is slightly acid soil. The limiting factors of rice production were Zn, Cu and Mn. Fertilization of micro nutrients needs to increase rice production in the district Penebel. To obtain suitable micro-nutrient fertilizer dosage to increase rice yield in district Penebel, it is needs to be done research of micro nutrients testing especially Zn, Cu, and Mn.

Kajian Kualitas Beberapa Pupuk Kompos Produksi Simantri di Daerah Bali Sesuai dengan Standar Nasional Indonesia Tahun 2004 (SNI 19-7030-2004) A.A. NYOMAN SUPADMA; I MADE MEGA; I MADE DANA
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Study of the Quality of Some Compost Fertilizer Simantri Production in Bali in Accordance with Indonesian National Standard-2004 (SNI 19-7030-2004). In Bali currently has circulated various types of compost, but testing of the quality most have not done regularly. Efforts to protect the consumer need to be implemented through the compost quality testing in the laboratory. This is done to prevent counterfeiting and ensure the quality of the compost is already in line with the quality standard SNI-2004. Among compost circulating in Bali, is compost Gapoktan Simantri production. The purpose of this study is to determine some of the physical and chemical properties of some Simantri’s compost circulating in Bali, whether in accordance with the criteria of the quality of compost SNI 19-7030-2004. Compost quality standards SNI-2004 are water content (<50%), pH (6.8 to 7.49), total-N (> 0.4%), C-organic (9.80 to 32%), P2O5 (> 0.10%), K2O (> 0.20%), C / N ratio (10-20), organic matter (27-58%), smells like soil, blackish color, and the temperature not hot. Compost sampling method for testing a composite on Gapoktan Simantri in Bali as many as 20 samples of compost. Parameters include: water content (grafimetri), pH (electrode glas), total-N (method of Kjeldhal), P2O5 and K2O (method of extracting HCL 25%), organic C (method of Walkley and Black), material organic, EC (coductometer), C/N ratio, color, temperature, and smell of the compost. Data obtained from the analysis in laboratory are compared to standard quality of compost according to SNI 19-7030-2004. The results showed that the total-N of compost Simantri is very high (1.13 to 2.11%), P content is very high (0.103 to 0.123%), K content is very high (0.902 to 2.342%), C-organic is very high (14.08 to 25.48%), C/N ratio (10.52 to 18.52), organic matter (24.87 to 43.93%) (all of these parameters in accordance with SNI-2004) ; pH (6.65 to 8.36) (some not suitable SNI-2004), EC (2.31 to 8.46 mmhos/cm2) (some very high), moisture content (36.60 to 56.60%) (some not suitable SNI-2004), blackish color, smells like soil, and temperature not hot (according to the standard SNI-2004).The majority (57.14%) of compost Simantri examined in accordance with the standard quality compost SNI-2004, but (42.86%) is not in accordance (pH and water content of compost).

Peningkatan Hasil Tanaman Kedelai melalui Pemberian Pupuk Organik Cair Biourin dan Dosis Pupuk Fosfat A.A. NYOMAN SUPADMA; I NYOMAN PUJA; I MADE MEGA
Agrotrop : Journal on Agriculture Science Vol 4 No 2 (2014)
Publisher : Fakultas Pertanian Universitas Udayana

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An Increase of The Yield of Soybean with Application of Biorine and Phosphorous Fertilizers. The experiment was conducted at green house of the Field Laboratory of Faculty of Agriculture, Udayana University, located at Pegok Denpasar. The Randomized Block Design (RBD) was arranged with three replications and nine treatments. The treatments namely : A (400 ml biourine L-1 water + 0 kg SP-36 ha-1), B (350 ml biourine L-1 water + 25 kg SP-36 ha-1), C (300 ml biourine L 1 water + 50 kg SP-36 ha-1), D (250 ml biourine L-1 water + 75 kg SP-36 ha), E (200 ml biourine L-1 water + 100 kg SP-36 ha-1), F (150 ml biourine L-1 water) + 125 kg SP-36 ha-1, G (100 ml biourine L-1 water + 150 kg SP-36 ha-1), H (50 ml biourine L-1 water + 175 kg SP-36 ha-1), I (0 ml biourine L-1 water + 200 kg SP-36 ha-1). The statistical analysis showed the treatments had significant effects on the variable of the weight of grain dry oven, 12% of water-containing weight of grain, and estimation of yields of 12% of water-containing weight of grain per hectar, but not significant to the number of nodule, height of plant, weight of plant, and weight of grains at post harvest. The highest yields of soybean was found on E treatment (37,30 ku ha 1).

Peningkatan Hasil Bawang Merah dan Perubahan Sifat Kimia Tanah dengan Pemupukan Berimbang Semi Organik pada Tanah Inceptisol A.A. NYOMAN SUPADMA; I MADE DANA; I DEWA MADE ARTHAGAMA
Agrotrop : Journal on Agriculture Science Vol 10 No 1 (2020)
Publisher : Fakultas Pertanian Universitas Udayana

Increased Yields Onion Plant and Changes of Soil Chemical Properties with Semiorganic Fertilization on Inceptisol Soil Tabanan. Thisexperiment to study the effects of inorganic fertilizer (P) and organic fertilizer (K) on the chemical properties as well as onion yields. A Factorial Randomized Block Design pot Experiment was conducted under Inceptisol soil conditions located at Kerambitan District, Tabanan Regency. The inorganic treatments consisted of P0 (control), P1 (50kg Phonska ha-1 + 200 kg ZA ha-1), P2 (100 kg Phonska ha-1 + 150 kg ZA ha-1), P3 (150 kg Phonska ha-1 + 100 kg.ZA ha-1). The organic treatments consisted of K0 (control), K1 (2 tons ha-1), K2 (4 tons ha-1), K3 (6 tons ha-1). Plant parameters observed including: plant height (cm), maximum number of leaves, maximum number of tubers, fresh and oven dry weight of tubers and hypothetical tubers fresh yields. The observed chemical soil properties including: soil pH and CEC. All data were analyzed using variance analysis and Duncan's test (0.05). The results showed that all fertilization treatments have significant effects on most parameters observed except plant height, soil pH and CEC. The P2K2 (100 kg Phonska ha-1 + 150 kg ZA ha-1) and (4 tons ha-1) treatment resulted in the best effects on the number tubers (7.7 tubers), weight of fresh tubers (37.9 g), tubers dry weight (6.5 g) per pot respectively. The highest hypothetical yields (9.5 tons ha-1) were also found under this treatment as well as the highest soil pH (6.6) and CEC (46.8 me 100g-1 of soil).

Pengaruh Pemupukan Berimbang Spesifik terhadap Pertumbuhan Tanaman Gaharu (Gyrinops versteegii) dan Perubahan Beberapa Sifat Kimia Tanah A.A. NYOMAN SUPADMA; I MADE DANA; I MADE MEGA
Agrotrop : Journal on Agriculture Science Vol 8 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Effect of Fertilizer (Organic + Inorganic + Dolomite) Combination to Improve of Growth Gaharu Plant (Gyrinops versteegii) and Characteristic of Soil Chemistry. This study aims to find combinations of fertilizer (organic + inorganic + dolomite) to promote the growth of gaharu plant and chemical properties of soil. This research was conducted in Tabanan Regency. The study was a randomized block design (RBD) with 7 treatments, each treatment was repeated three times to obtain 21 gaharu plants as a crop sample. The fertilizer formulations were tested as treatments as follows: A = without fertilizer (control), B = (50 g urea + 50 kg SP-36 + 50 kg KCl + 10 kg compost) + 50 g Dolomite) per tree, C = (100 g urea + 100 g SP-36 +100 g KCl + 7.5 kg compost + 75 g Dolomite) per tree, D = (150 g urea +150 g SP-36 + 150 g KCl + 5 kg compost + 75 g Dolomite) per tree, E = (200 g urea + 200 g SP-36 + 200 g KCl + 2.5 kg of compost + 100 g Dolomite) per tree, F = (200 g urea + 150 g SP -36 + 150 g KCl + 7.5 kg of compost + 100 g Dolomite) per tree, G = (200 g urea + 100 g SP-36 + 100 g KCl + 7.5 kg of compost + 75 g Dolomite) per tree. Parameters measured were plant height, girth of plants, and chemical properties of the soil. Analysis of data using analysis of variance and Duncan test (0.05). The results showed that fertilization treatments significantly affected plant height, but not significant to girth of plant. The best fertilizer combinations was the treatment of C, which were increase plant height (26,35 cm), pH (6,7), total N (0,28 %) and other chemical properties of soil.

Kajian Formula Pupuk Organik, Anorganik dan Pupuk Hayati Untuk Meningkatkan Sifat Kimia Tanah Serta Hasil Bayam Cabut (Amaranthus Spp. L.) Pada Inceptisol A.A. NYOMAN SUPADMA; I MADE DANA; I DEWA MADE ARTHAGAMA
Agrotrop : Journal on Agriculture Science Vol 12 No 1 (2022)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2022.v12.i01.p14

Study of Organic, Inorganic and Biofertilizer Formulas to Improve Some Soil Chemical Properties and Improve Yields of Spinach (Amaranthus Spp. L) on Inceptisol. The aims of experiment to find the best and environmentally fertilizer formula to improve the yield of spinach and improve some properties soil chemistry. This research was a pot experiment in a green house conducted in Tabanan. Using a nested design two factors, consisting of 5 formulas combination of organic, inorganic and Biofertilizers, and 3 types of population of spinach plants per pot. The fertilizer formula are: F0 control), F1 (3 ton compos + 350 kg Urea + 2 % Biofertilizer), F2 (6 ton compos + 300 kg Urea + 4 % Biofertilizer), F3 = (9 ton + 250 kg Urea + 6 % Biofertilizer), F4 (12 ton + 200 kg Urea + 8 % Biofertilizer) per hektar, and population factors consist of: P1 = 4 plant, P2 = 8 plant, P3 = 12 plant per pot. Each treatment was repeated 3 times so 45 experiment pots were needed. The parameters observed were: maximum plant height (cm), fresh plant weight at harvest, oven dry plant weight, soil pH, C-organic and soil CEC at harvest. The observational data were analyzed statistically, tested for variance to determine the effect of the treatment being tried. If significant effect is continued with the Duncans test of 5%. The results showed that the initial soil analysis showed low C-organic soil content, low total N-soil, low soil pH (6.3), and low soil CEC. The highest spinach plant height was achieved by F2P1 treatment of 25 cm, followed by F2P2 resulting in plant height of 23 cm. However, the highest fresh weight of full spinach is harvested at F2P2 treatment with a weight of 154 g per pot. Likewise, the best change in soil chemical properties was obtained in the F2P2 treatment.

Formulasi Limbah Cangkang Telur Ayam Ras Dengan Kompos Limbah Pasar untuk Peningkatan Hasil Sawi Hijau (Brassica juncea L.) A.A. NYOMAN SUPADMA; I MADE DANA; I DEWA MADE ARTHAGAMA
Agrotrop : Journal on Agriculture Science Vol 12 No 1 (2022)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2022.v12.i01.p13

The formulation of chicken eggshell waste with market waste compost to increase the yield of green mustard (Brassica juncea L.). Aims to find the best and environmentally friendly organic fertilizer formula to increase the yield of green mustard and improve some soil chemical properties. This research is a pot experiment in a greenhouse, using a simple randomized block design consisting of 7 combinations. Fertilizer formulas that were tried were: F0 (without treatment), F1 = (100 kg of shell + 10 tonnes of compost), F2 = (200 kg of shell + 8 tonnes of compost), F3 = (300 kg of shell + 6 tonnes of compost), F4 = (400 kg of shell + 4 tons of compost), F5 = (500 kg of shells + 2 tons of compost), F6 = (600 kg of shells + 0 tons of compost), and each treatment was repeated 4 times. The parameters observed included: maximum plant height (cm), fresh plant weight at harvest, oven dry plant weight, soil pH, C-organic content, CEC and soil Ca content at harvest. The data were analyzed statistically, tested for variance. If the effect of the treatment had significant, then continued with the 5 % Duncans test. The results of this study indicate that the treatment has a significant effect on plant height growth, fresh weight and oven dry weight of plants, as well as changes in soil chemical properties such as: C-organic, soil CEC, and soil Ca content. The fresh plant weight was obtained in treatment F2 (9.55 g), followed by F3 (9.37 g), and F1 (9.18 g) per pot. While the highest CEC was obtained in the F2 treatment (36.31 me 100 g-1) with a soil Ca content of 7.52 me 100 g-1. The best fertilizer formula from this study was found in the F2 treatment.

Evaluasi Status Kesuburan Tanah pada Pertanian Lahan Kering Berbasis Sistem Informasi Geografis di Kecamatan Baturiti Jencristy Gilberd Sitanggang; Ni Made Trigunasih; A.A. Nyoman Supadma
Nandur Vol 2 No 2 (2022)
Publisher : Fakultas Pertanian, Universitas Udayana

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Baturiti District is located in the highlands and is one of the largest producers of horticultural agricultural products in Bali Province. productivity of seasonal horticultural crops, namely tomato plants (31,617 tons/ha); chili plants (8,122 tons/ha); Chinese cabbage (61,889 tons/ha). Farmers carry out intensive land management to achieve high production with the addition of chemical fertilizers and pesticides which in the long term can damage the soil and reduce soil fertility. To maintain high production, it is necessary to evaluate soil fertility in dry land agriculture in Baturiti District. The purpose of this study was to determine the status of fertility, as well as to determine the limiting factors of soil fertility, and provide direction for soil management in Dry Land Agriculture, Baturiti District. The research method used is a survey and soil test method with parameters of fertility status including Cation Exchange Capacity (CEC), Base Saturation (BS), organic-C, total-P, and total-K with reference to the Technical Instructions for Evaluation of Soil Fertility Research Center Bogor land. The results showed that the soil fertility status at the study site was classified into three soil fertility statuses, namely, low with an area of 971.88 ha in HLU I (Parean Tengah Village), classified as medium with 1,023.08 ha found in HLU V (Luwus Village), HLU IX (Antapan Village), HLU VII (Candikuning Village), and a height with an area of 3,082.98 ha are located in HLU IV (Antapan Village), HLU II (Antapan Village), HLU III (Baturiti Village), HLU VIII (Bangli Village) ), HLU VI (Angseri Village). Parameters that are limiting factors for soil fertility status are CEC and C-organic so it is necessary to add organic matter such as organic fertilizer, manure, compost, return of plant remains and by applying intercropping cultivation and crop rotation on dry land agriculture. in Baturiti District.

Uji Pupuk Kompos Akibat Penambahan Sludge Minuman Berkarbonasi terhadap Hasil Sawi Hijau (Brassica juncea L.) dan Beberapa Perubahan Sifat Kimia Tanah Devin Ronaldo Naidu; A. A. Nyoman Supadma; I Dewa Made Arthagama
Nandur Vol 1 No 4 (2021)
Publisher : Fakultas Pertanian, Universitas Udayana

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The purpose of this study was to determine the effect of giving additional doses of compost fertilizer with carbonated beverage sludge and sludge on the chemical properties and growth yield of mustard greens (Brassica juncea L.). This research was carried out from March 2021 to May 2021 and used a Randomized Block Design (RBD) consisting of 8 treatments, including control which was repeated three times with 24 experimental pots. The treatment tried was P0 = no fertilizer (control). P1 = 5 tons of compost/ha-1 (11.25 grams of compost/pot-1), P2 = 10 tons of compost/ha-1 (22.5 grams of compost/pot-1), P3 = 15 tons of compost/ha- 1 (34 gr compost/pot-1), P4 = 20 tons compost/ha-1 (45 gr compost/pot-1), P5 = 5 tons sludge/ha-1 (11.25 sludge/pot-1), P6 = 10 tons of sludge/ha-1 (22.5 gr sludge/pot-1), P7 = 15 tons of sludge/ha-1 (34 gr sludge/pot-1). The parameters observed in this study were divided into two observations, observing soil chemical properties, including pH, N-total, P-available, K-available, Electrical Conductivity (EC), C-organic, Cation Exchange Capacity (CEC), and Base Saturation. Plant parameters are consisting of plant height, number of leaves, fresh weight, plant dry weight. The results of statistical analysis showed the fertilizer dose had a very significant effect (P>0.01) on K-available, P-available, BS and had a significant effect (P <0.05) on pH and EC, but had no significant effect (P> 0.05) on N- total, C-organic, CEC, plant height, number of leaves, fresh weight, and plant dry weight. P7 treatment showed that the best improvement in plant parameters such as plant height which increased by 20%, and fresh weight of 45% from the control treatment. The chemical properties of available P-available increased by 25%, available K-available increased by 22%, and BS increased by 10% from the control.

Co-Authors BAYU RACHMADYA D.M. Arthagama D.N. KASNIARI DARRYL CHRISTOPHER WENAS Devin Ronaldo Naidu DEWA AYU PUTU RISTA SWANDEWI Dewa Made Arthagama ELDO GABRIEL SIREGAR FRISKA SUSIANTI GDE CAKRA WAHYU P HASBI MAULANA I DEWA MADE ARTHAGAMA I DEWA MADE ARTHAGAMA I G.NGURAH BAGUS I GUSTI PUTU RATNA ADI I Ketut Sardiana I M. Adnyana I M. Dana I M. Mega I MADE ADNYANA I MADE DANA I MADE DANA I MADE DANA I MADE DANA I MADE DANA I Made Mega I N. DIBIA I N. Puja I Nyoman Puja I WAYAN SUARJANA I.N. Dibia IGN Bagus INDAYATI LANYA IRNAWATI PURBA Jencristy Gilberd Sitanggang JHON YANSEN SIPAYUNG M. Dana MOH SAIFULLOH NI KADEK SHINTA DHARMAYANTI NI MADE TRIGUNASIH TANTYA TANTRI P. T. N Yoga Yuniadi

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