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

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Pengaruh Pemberian Biourine dan Dosis Pupuk Anorganik (N,P,K) Terhadap Beberapa Sifat Kimia Tanah Pegok dan Hasil Tanaman Bayam (Amaranthus sp.) NI KADEK SHINTA DHARMAYANTI; A.A. NYOMAN SUPADMA; I DEWA MADE ARTHAGAMA
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 Effect of Biourine and Dosage of Inorganic Fertilizer (N,P,K) to Several Chemical Properties of Soil Pegok and the Yield of Spinach Plant (Amaranthus sp.) The research aims to find out the effect of interaction between Biourine and dosage of inorganic fertilizer (N,P,K) and to find out the ability of Biourine in reducing the use of inorganic fertilizer (N,P,K) towards several chemical properties of Pegok soil and the yield of spinach plant (Amaranthus sp.). The research was conducted on November 2012 until January 2013 at the green house of Pegok’s Experimental Garden in Denpasar, and at Soil Laboratory, Faculty of Agriculture, Udayana University. The experiment used Randomized Block Design (RBD) with two factors, including  Biourine concentration (U) and dosage of inorganic fertilizer (P). The observation parameters of this research were total N, available P, available K, C-organik of soil, the pH of the soil and the growth and the quality of the plants, which include the height of the plants, the weight of the fresh shoots, oven dried weight of shoots, the total weight of the roots, oven dried weight of roots. The result of the statistic analysis shows that the Biourine and dosage of inorganic fertilizer is not affecting all parameters observed. The use of the Biourine obviously affects all of the parameters except the available P, the pH of the soil and oven dried weight of roots. More over, the use of the dosage of inorganic fertilizer affects all parameters except which include the height of the plants the acidity of the soil is obviously affecting, and also for other parameters are not affecting.   Key words : Biourine, inorganic fertilizer, spinach plant
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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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 Pemupukan Organik, Semi Organik dan Anorganik terhadap Sifat Fisika, Kimia Tanah dan Hasil Padi Pada Beberapa Munduk Di Subak Mambal DEWA AYU PUTU RISTA SWANDEWI; NI MADE TRIGUNASIH; A.A. NYOMAN SUPADMA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.7, No.1, Januari 2018
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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The Influence of Organic, Semi Organic and Anorganic Fertilization on Physical, Chemical soil Characteristic and Rice Yield in Some Munduk in Subak Mambal Rice is a major requirement for the people in Indonesia. The decrease of soil fertility which resulted in optimal rice productivity in paddy fields, due to low fertilizer efficiency. Soil fertility needs to be improved through proper and balanced fertilization. This research aims knowing the effect of organic, semi-organic and anorganic fertilization on some Munduks in Subak Mambal, on physical properties, chemical soil and rice yield.This research used Nested Design. The treatment consists of three types of fertilization are organic fertilization, semi-organic fertilizer and anorganic fertilization. The location treatment consists of four Munduk are Munduk Batuangsut location, Munduk Kedampal location, Munduk Bedugul location and Munduk Semana location.The result of statistical analysis showed that organic fertilizer, semi-organic and anorganic treatments had significant effect (P <0,05) to very real (P <0,01) on all parameters observed except the bulk density and soil pH. The organic fertilizer treatment at the Munduk Batuangsut location gave the highest rice yield average of 8,0 tons ha-1, at the location of Munduk Kedampal gave the highest rice yield average of 7,32 tons ha-1. The semi-organic fertilizer treatment at the location of Munduk Bedugul gave the highest rice yield average of 7,8 tons ha-1 and at the location of Munduk Semana gave the highest average yield of 7,5 tons ha-1.
Pengaruh Pemberian Beberapa Formula Pupuk untuk Peningkatan Produksi dan Mutu Sawi Hijau (brassica juncea l.) di Tanah Inceptisol, Desa Pegok, Denpasar IRNAWATI PURBA; INDAYATI LANYA; A.A. NYOMAN SUPADMA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.5, No.3, Juli 2016
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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The Impact Of Several Fertilizer Formula For IncreaseTheProduction and Quality Of Green Mustard (Brassica juncea L.) in Inceptisol Soil, Pegok Village, DenpasarThis research aims to know the impact of several fertilizer formulas towards production and quality increase of green mustard in inceptisol soil, and the chemical characters of Pegok land. This research was conducted in September until December 2015 at the Experimental Garden Faculty of Agriculture, and Soil Laboratory and Environmental Sciences, Faculty of Agriculture, Udayana University. The experiment used Randomized Block Design (RBD) and the using analysis of variance (ANOVA) with program Costat. The parameter observed in this research was divided into three observations, they were the height of plants, the weight of fresh plants sample, the weight of fresh plants. The plants quality contains of chlorophil, water content and plants storability. The observartion of chemical characters of the plants encompasses pH, KTK, KB, nutrient content N-total, P- available, K-available, Ca, Mg, C-Organic, as well as soil electric conductivity. The result of statistical analysis shows that giving some fertilizer formulas has significant impact for all production and quality parameter namely leaf chlorophyll however does not give real impact towards water content and plants storability. The impact of giving some fertilizer formulasfor mineral fertilizer treatment increase the residual effect of several nutrient contents namely Ca, Mg, pH and highest DHL, whilst KTK, KB, C-organic and highest N-Total were obtained from the organic fertilizer treatment.
Evaluasi Status Kesuburan Tanah untuk Arahan Pengelolaan Kesuburan Tanah di Desa Pajahan, Kecamatan Pupuan, Kabupaten Tabanan FRISKA SUSIANTI; I DEWA MADE ARTHAGAMA; A.A. NYOMAN SUPADMA
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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Evaluation of Soil Fertility Status for Soil Fertility Local Recommendation at Pajahan Village, Pupuan District of Tabanan Regency Agricultural lands plays an important role in providing human needs for foods. Agricultural lands can provide an optimal agricultural products if its have a good fertility status. This study aims to determine status of soil fertility at Pajahan Village, its whereabouts, the factors that affect soil fertility, and given local recommendations for soil fertility management at Pajahan Village. This study used soil survey and soil analysis methods with parameters of soil fertility status, namely Cation Exchange Capacity (CEC), Base Saturation (BS), C-organic, total-P and total-K based on the Technical Instructions for Evaluation of Soil Fertility (PPT, 1995). Analysis of total- N and pH content were also carried out as supporting data. The results showed that Pajahan Village has two classes of soil fertility status, namely medium (L2, L3, L4) and high status (L1). The limiting factor for soil fertility status at Pajahan Village is total-P content of L2, L3, and L4. Local recommendations for soil fertility management at Pajahan Village is giving a addition of P fertilizer, N fertilizer and also addition of organic fertilizer.
Pemetaan Kualitas Tanah pada Lahan Kebun Campuran dengan Geography Information System (GIS) di Kecamatan Tegallalang, Kabupaten Gianyar MOH SAIFULLOH; I KETUT SARDIANA; A.A. NYOMAN SUPADMA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.6, No.3, Juli 2017
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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The Mapping of Soil Quality Under Mixed Dry Land Farming Using Geography Information System (GIS) at Tegallalang, Gianyar Regency Mapping of soil quality undermixed dry land farming area using GIS was held in Tegallalang, Gianyar Regency on October 2016 – January 2017. This research implementing exploratory method on the purposive land use followed by laboratory soil analysis. Soil samples were randomly taken on each homogeneous land units on the map developed by overlaying slope, soil type, and land use maps. The following soil quality indicators as the minimum data set (MDS) were measured: soil bulk density, porosity, field capacity water content, texture, pH, C-Organic, CEC, base saturation, nutrients (N, P and K), and C-biomass. The values of soil quality were mapping using QGIS 2.18.0 and refer to land management direction. The results showed that the soil quality in the research area considered being good and medium level. The good soil quality present on land units laid down on the wavy slope had different land cover vegetation, different land management systems (fertilizer, without fertilizer, soil tillage and without soil tillage). The medium soil quality was including land units that present on steep slope, had different land cover vegetation without land managements. The limiting factors of soil quality were texture, C-Organic, CEC, base saturation, N and C-biomass. It was recommended to tillage the soil using hoe and applying organic fertilizer, Urea, and dolomite on the farming area.
Kajian Status Kesuburan Tanah Sawah Untuk Menentukan Anjuran Pemupukan Berimbang Spesifik Lokasi Tanaman Padi Di Kecamatan Manggis I WAYAN SUARJANA; A.A. NYOMAN SUPADMA; I DEWA MADE ARTHAGAMA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.4, No.4, Oktober 2015
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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ABSTRACT Study Status of Fertility paddy Soil to Determine Instigation Balanced Fertilization Specific Location Rice Plants in Manggis District This research to determine of soil fertility status in Manggis district and make instigation balanced fertilization specific location on the rice plants accordance with of soil fertility status. This research was conducted survey and test method of soil analyzed in the laboratory of  Soil Science and Environment Faculty of Agriculture, Udayana University with soil chemical properties determination CEC, Cation Saturated, N-total, P2O5, K2O, C-organic, pH and EC. Results the evaluation of soil fertility status in Manggis district, Karangasem regency consists of soil fertility status high contained on land units I, II, III, VI, and soil fertility status being medium found on land unit IV, V, and VII. Instigation of urea without organic matter much as 250 kg ha-1, with 5 tons of straw ha-1 addition of urea many as 230 kg ha-1 and 2 tons ha-1 cage fertilizer addition of urea fertilizer 225 kg ha-1. P fertilization on medium soil status much as 75 SP-36 kg ha-1, and P fertility status high 50 kg SP-36 ha-1. K fertilizer application of 50 kg ha-1. Instigation using fertilizer organic rice straw compost the equivalent of 5 tons ha-1 and 2 ton ha-1 cage fertilizer. Keywords : Soil Fertility Status and Instigation Balanced Fertilization Specific    Location.
Pemetaan Status Kesuburan Tanah Sawah Berbasis Sistem Informasi Geografis di Subak Buaji dan Subak Padanggalak Kecamatan Denpasar Timur ELDO GABRIEL SIREGAR; I GUSTI PUTU RATNA ADI; A.A. NYOMAN SUPADMA
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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The Mapping of Paddy Soil Fertility Status Based on Geographic Information System in Subak Buaji and Subak Padanggalak, East Denpasar District This study aims to evaluate the status of soil fertility and provide management measures for limiting factors as well as making maps of soil fertility status in Subak Buaji and Subak Padanggalak, East Denpasar District. The method used in soil sampling in the study area is the survey method by first creating a homogeneous land unit obtained by overlaying several thematic maps such as semi-detailed soil maps, slope maps and subak maps, then each homogeneous land unit is carried out several observation points and Soil sampling using purposive sampling method which is then composited. Soil samples that have been obtained are then analyzed in the laboratory for soil chemical properties including: Cation Exchange Capacity (CEC), Base Saturation (KB), C-Organic Soil, P-total, K-total. The results of the analysis of soil chemical parameters are then evaluated on their fertility status based on the PPT technical guidelines for mapping soil fertility status (1995). The results showed that in Subak Buaji and Subak Padanggalak, East Denpasar District, there were three classes of soil fertility status, namely low fertility class (R) found in SLH I.II (Subak Padanggalak), medium fertility class (S) in SLH I.I (Subak Buaji ), while the high fertility class (T) is found in SLH II (Subak Buaji and Subak Padanggalak) and SLH III (Subak Padanggalak). The soil fertility parameter which is the limiting factor is the low P-total value. Management action to overcome these limiting factors is the addition of phosphorus fertilizers and organic fertilizers.
Evaluasi Status Kesuburan Tanah di DAS Yeh Ho Kabupaten Tabanan Berbasis Sistem Informasi Geografis Untuk Menentukan Arahan Pengelolaan Lahan JHON YANSEN SIPAYUNG; I DEWA MADE ARTHAGAMA; A.A. NYOMAN SUPADMA
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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Evaluation of Soil Fertility Status at the Yeh Ho watershed of Tabanan Regency Based on Geographic Information Systems to Determine Land Management This study aims to determine the status of soil fertility in the Yeh Ho waterahed, Tabanan Regency and to determine the limiting factors for soil fertility in the Yeh Ho Watershed, Tabanan Regency. Provide fertilization directions based on the results of evaluation of soil fertility status in the Yeh Ho Watershed, Tabanan Regency and provide information in the form of a map of soil fertility status based on a geographic information system. The method used in taking soil samples in the study area is the field survey method by first making homogeneous land units obtained through overlaying several thematic maps such as soil type maps, slope class maps and land use maps then each land unit is sampled purposively. sample which is then composited. Soil samples that have been obtained are then analyzed in the laboratory for soil chemical properties including, Cation Exchange Capacity (CEC), Base Saturation (BS), C-Organic Soil, P-Total, K-Total, pH. The results of the analysis of soil chemical parameters are then evaluated on the status of soil fertility based on PPT (1995).The results showed that in the Yeh Ho watershed in Tabanan Regency there were three classes of soil fertility status namely high fertility class (T) consisting of 2 namely land units IV and VII (Jatiluwih Village and Rejasa Village), and medium fertility class (S) consisting of 10 namely land units II, III, V, VI, VIII, IX, X, XI, XII and XIII (Jatiluwih Village, Penatahan Village, Wangaya Gede Village, Tangguntiti Village, Senganan Village and Dalang Village), while those with low fertility classes include 1 land unit, namely I (Desa Beraban). Two soil fertility parameters which are limiting factors are the low P-total and K-total values. Alternative management measures to overcome these two limiting factors are the addition of phosphorus fertilizer, potassium fertilizer and organic matter.
Efek Pemberian Formulasi Pupuk Semi Organik dan Populasi Bayam Merah (Amaranthus spp. L) terhadap Hasil Bayam Merah dan Perubahan Sifat KimiaTanah Inceptisol GDE CAKRA WAHYU P; A.A. NYOMAN SUPADMA; I DEWA MADE ARTHAGAMA
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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The Effect of Semi-Organic Fertilizer Formulation on Red Spinach Populations (Amaranthus spp.L) on Yield and Changes in Inceptisol Soil Chemical Properties This study aims to determine the proper formulation of organic, inorganic and biological fertilizers and the best population to increase the production of spinach on Inceptisol soil, as well as changes in soil chemical properties after harvest. This research was conducted from December 2019 to March 2020 in Samplangan Village, Gianyar Regency, using a pot experiment. The second stage is analysis the chemical properties of soil which is carried out at the Laboratory of Soil and Environmental Sciences, Faculty of Agriculture, Udayana University. The design used was a randomized block design (RBD) with nested patterns with 5 formulations and 2 different populations with 3 replications. F0 = without fertilizer (control), F1 = (3 tons of compost + 350 kg of urea + 5 cc of biofertilizer. 1 l-1 water) hectare-1, F2 = (6 tons of compost + 300 kg of urea + 10 cc of biofertilizer. 1 1-1 water) hectare-1, F3 = (9 tons of compost + 250 kg urea + 15 cc of biofertilizer. 1 l-1 water) hectare-1, F4 = (12 tons of compost + 200 kg of urea + 20 cc of biofertilizer. 1 l-1 water) hectare-1, P1 5 plants and P2 10 plants. Treatment F2 and F3 produced the highest fresh weight compared to control in population P1, while in population P2 treatment F3 produced the highest fresh weight. Provision of semi-organic fertilizer formulations can increase the content of nutrient elements contained in the soil after harvest.
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