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TRANSFORMASI NITROGEN DI OUTLET SALURAN IRIGASI DAERAH ALIRAN SUNGAI TONDANO Wantasen, Sofia
Sainteknol : Jurnal Sains dan Teknologi Vol 13, No 1 (2015): June 2015
Publisher : Unnes Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sainteknol.v13i1.5337

Nitrogen di lingkungan akan mengalami transformasi ke dalam bentuk senyawa nitrat (NO 3 - ), nitrit (NO 2 - ), ammonia (NH 3 ) Transformasi nitrogen tersebut dipengaruhi oleh kondisi lingkungan. Penelitian ini bertujuan untuk mengkaji transformasi nitrogen di outlet saluran irigasi Daerah Aliran Sungai . (DAS) Tondano. Cara penelitian adalah observasi lapangan terhadap aktivitas pertanian dan pengambilan sampel kualitas air dilakukan dengan menggunakan metode composite sampling pada 25 lokasi sampel di outlet saluran irigasi. Analisis parameter nitrat, nitrit, ammonia dilakukan di Laboratorium Balai Teknik Kesehatan Lingkungan Provinsi Sulawesi Utara. Analisis data menggunakan Metode Grafik dan membandingkan dengan Baku Mutu sesuai PP No. 82/2001 Kelas II. Hasil penelitian menunjukkan bahwa transformasi nitrogen (nitrat, nitrit, ammonia) di outlet saluran irigasi persawahan bagian selatan (konsentrasi NO 3 : 8,6-18,4 mg/l; NO 2 : 0,14-0,25 mg/l; NH 0-2,6 mg/l); outlet saluran irigasi persawahan bagian barat (konsentrasi NO 3 3 : 1,33-12,2 mg/l; NO : 0-0,77 mg/l; NH 0,01-0,86 mg/l) dan outlet saluran irigasi persawahan bagian timur

TRANSFORMASI NITROGEN DI OUTLET SALURAN IRIGASI DAERAH ALIRAN SUNGAI TONDANO Wantasen, Sofia
Sainteknol : Jurnal Sains dan Teknologi Vol 13, No 1 (2015): June 2015
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sainteknol.v13i1.5337

Nitrogen di lingkungan akan mengalami transformasi ke dalam bentuk senyawa nitrat (NO 3 - ), nitrit (NO 2 - ), ammonia (NH 3 ) Transformasi nitrogen tersebut dipengaruhi oleh kondisi lingkungan. Penelitian ini bertujuan untuk mengkaji transformasi nitrogen di outlet saluran irigasi Daerah Aliran Sungai . (DAS) Tondano. Cara penelitian adalah observasi lapangan terhadap aktivitas pertanian dan pengambilan sampel kualitas air dilakukan dengan menggunakan metode composite sampling pada 25 lokasi sampel di outlet saluran irigasi. Analisis parameter nitrat, nitrit, ammonia dilakukan di Laboratorium Balai Teknik Kesehatan Lingkungan Provinsi Sulawesi Utara. Analisis data menggunakan Metode Grafik dan membandingkan dengan Baku Mutu sesuai PP No. 82/2001 Kelas II. Hasil penelitian menunjukkan bahwa transformasi nitrogen (nitrat, nitrit, ammonia) di outlet saluran irigasi persawahan bagian selatan (konsentrasi NO 3 : 8,6-18,4 mg/l; NO 2 : 0,14-0,25 mg/l; NH 0-2,6 mg/l); outlet saluran irigasi persawahan bagian barat (konsentrasi NO 3 3 : 1,33-12,2 mg/l; NO : 0-0,77 mg/l; NH 0,01-0,86 mg/l) dan outlet saluran irigasi persawahan bagian timur

BIOMONITORING DAMPAK EKOLOGIS MERKURI DI DAERAH ALIRAN SUNGAI TORAUT KABUPATEN BOLAANG MONGONDOW Rantung, John L.; Wantasen, Sofia
EUGENIA Vol 22, No 2 (2016)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.22.2.2016.12956

ABSTRACT Traditional gold mining in Toraut Watershed Bolaang Mongondow District was used Merkuri Amalgamation that produced tailing. Tailing are discharged to river and environment sorounding that can enter Toraut River and flows to the down stream Mongondow river (beach Inobonto). This study aims: 1) To determine Hg concentrations in River Toraut up stream, middle stream and down stream; 2) To determine Hg concentrations in sediment of the River Toraut up stream, middle stream and down stream; 3) To determine Hg concentrations in aquatic plantsof the River Toraut up stream, middle stream and down stream.Â Location research in River Toraut up stream, middle stream and down stream. Data collected by observation and laboratory analysis Merkuri concentration in River Toraut, sediment, and aquatic plant. Method data analysis are descriptif, Graphic Method and to compare with standart Goverment PP. No.82/2001 Class II. The analysis showed that the concentration of Merkuri in River Toraut up stream, in the middle stream and down stream is<0.00005 mg/l. The concentration of Merkuri in sediments River Toraut up stream, the middle stream and down stream ranged < 0.05-1.45 mg/kg dry. The concentration of Merkuri in tissue plant aquatic location up stream of the River Toraut, the middle stream and down stream range < 0.001-0.013 mg /kg wet.Keywords : biomonitoring, ecological impacts merkuri, Toraut Watershed

Chlorine Concentration and Phytoplankton Diversity in the Streams around Tondano Watershed, North Sulawesi, Indonesia Wantasen, S.; Luntungan, J. N.; Koneri, R.
Jurnal Pendidikan IPA Indonesia Vol 11, No 1 (2022): March 2022
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v11i1.31601

The use of chlorine in agriculture and settlements increases and impacts surrounding waters, such as watersheds: The land area is a unit with rivers and tributaries that function to accommodate, store and distribute water from rainfall to the sea naturally. The environmental condition of the Tondano watershed is important to study in terms of chlorine distribution, considering that residential and agricultural activities in the watershed can cause residues in the aquatic environment, which harm the environment, especially phytoplankton. This study aims to examine the concentration of chlorine and its impact on the phytoplankton diversity in the Tondano watershed, North Sulawesi, Indonesia. Using the composite method, water quality sampling to calculate chlorine concentration was carried out at 17 river locations using the composite method, while six river stations represented phytoplankton sampling. Chlorine concentration was measured using UV-VIS spectrophotometry, while plankton sampling used a plankton net with a mesh size of 40 µm and a net mouth diameter of 20 cm. The results show that the highest chlorine concentration was found in Tondano Hilir River (0.05 mg/L), followed by the Kakas River downstream (0.04 mg/L). Chlorine concentration distribution in other rivers has the same concentration (0.03 mg/L). Quality standard Chlorine according to Government Regulation number 22/2021 Appendix VI Class II is 0,03 mg/L. The highest number of species and index of phytoplankton species diversity was found in the Hulu Panasen River, while the highest species abundance was found in the Tondano River downstream. The correlation analysis of species diversity index with chlorine concentration did not show a significant relationship with the diversity of phytoplankton, but aquatic ecosystems have experienced moderate ecological pressure.

STUDI KUALITAS AIR IRIGASI DUMOGA DI KABUPATEN BOLAANG MONGONDOW PROVINSI SULAWESI UTARA Sofia Wantasen; Joudie. N. Luntungan
Bumi Lestari Journal of Environment Vol 17 No 2 (2017)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2017.v17.i02.p04

Water Irrigation a very important and is one key to the success of the increased production of rice plants in the paddy field. The aim of this study was to assess the water quality Irrigation Dumoga at Kabupaten Bolaang Mongondow Province Sulawesi Utara. Data collected by observation of agriculture activity and determination of sampling by using composite sampling method at canal Irrigation Dumoga. Measurement in situ pH, and temperatur. Analysis concentration total dissolved solid (TDS), total suspended solid (TSS), conductivity (DHL), nitrate and phosphate, sodium, calcium, magnesium in the Laboratory. Method data analysis are Graphic Method and to compare with standart Goverment PP. No. 82/2001 Class IV, and Sodium Absorption Ratio (SAR) Analysis. The results showed that temperatur at canal Irrigation Motabang 29,3 C, pH 7,12, value of the total dissolved solid (TDS) 127 mg/l, total suspended solid (TSS) 7 mg/l, conductivity (DHL) 182 µS/cm, nitrate 0,040 mg/l, phosphate 0,076 mg/l mg/l eligible accordance with the standard PP No. 82/2001 Kelas IV. Natrium concentration 6,38 mg/l, kalsium 0,76 mg/l, magnesium 0,27 mg/l.

DISTRIBUSI SPASIO -TEMPORAL NITROGEN DI DAERAH TANGKAPAN AIR DANAU TONDANO PROVINSI SULAWESI UTARA Sofia Wantasen; Joudie N. Luntungan
Bumi Lestari Journal of Environment Vol 16 No 1 (2016)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/blje.2016.v16.i01.p03

The spatio temporal distribution of nitrogen in catchment area of Lake Tondano wasimportant to investigate because agricultural residue comes from the catchment potentiallydecreased water quality in Lake Tondano. The purpose of this study was to examine thedistribution of nitrogen spatially and temporally in the catchment area of Lake Tondano.The study was conducted in the field and laboratory. Water quality sampling conducted byusing composite sampling on the rivers, lake Tondano and outlet of irrigation channels.The data collected was the total nitrogen, nitrate, ammonia in 2001, 2008 and 2014. Datawere analyzed using Graph Method and Spatial Analysis. The results showed that the distribution of total nitrogen that has a high concentrationfound in the outlet streams and irrigation canals outlet. High nitrate accumulates in theoutlet of Lake Tondano. Nitrate concentration can be divided into 9 (nine) classes, namelyconcentration of 0.100 to 0.211 mg / l; 0.211 to 0.322 mg / l; 0.322 to 0.433 mg / l; 0.433 to0.544 mg / l; From 0.544 to 0.655 mg / l; From 0.655 to 0.766 mg / l; 0.766 to 0.877 mg / l;0.877 to 0.988 mg / l; and 0,988- 1,100 mg / l. Ammonia, spatially spread evenly on thesurface of Lake Tondano. Ammonia concentration can be divided into 9 (nine) class is aclass that has a concentration of 0.000 to 0.064 mg / l; From 0.064 to 0.129 mg / l; 0.129 to0.193 mg / l; From 0.193 to 0.258 mg / l; 0.258 to 0.322 mg / l; 0.322 to 0.387 mg / l; From0.387 to 0.451 mg / l; 0.451 to 0.516 mg / l; and from 0.516 to 0.580 mg / l. Concentrationsof nitrate and ammonia fluctuated from year to year of observation. This was influenced byfertilization in rice fields.

RESIDU PUPUK NITROGEN DI LINGKUNGAN PERAIRAN HULU DAERAH ALIRAN SUNGAI TONDANO PROVINSI SULAWESI UTARA Sofia Wantasen
Bumi Lestari Journal of Environment Vol 15 No 2 (2015)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar

The Nitrogen fertilizer which is not absorbed by plant will be impact to residue in theenvironment. The aim of this study was to assess the residues of nitrogen in the aquaticenvironment up stream of the Tondano Watershed during 2013-2015 (three years). Datacollected by observation of agriculture activity and determination of sampling by usingcomposite sampling method in River Panasen which is paddy irrigation outlet canal upstream of the Tondano Watershed during 2013-2015 (three years), was measurement eachthree month and analysis nitrate, nitrite, ammonia in the Laboratory. Method data analysisare Graphic Method and to compare with standart Goverment PP. No. 82/2001 Class II.Results showed that the nitrogen residue concentration (nitrate, nitrite, ammonia) ataquatic environment in the up stream of Tondano Watershed on the growing season in 2013nitrate concentration: 0,293-0,408 mg/l; nitrite 0,001-0,041 mg/l; ammonia 0,04-0,28 mg/l. in the growing season in 2014 concentration nitrate: 0,184-0,628 mg/l; nitrite 0,020,077mg/l;ammonia0,002-0,13mg/l.inthegrowingseasonin2015concentrationnitrate:0,173-0,585mg/l;nitrite0,001-0,029mg/l; ammonia0,05-0,10mg/l.

Dampak Pertambangan Emas Tanpa Izin Terhadap Kualitas Air Permukaan Sofia Wantasen; Frangky J Paat; Tommy B Ogie
Seminar Nasional Lahan Suboptimal 2021: Prosiding Seminar Nasional Lahan Suboptimal ke-9 “Sustainable Urban Farming Guna Meningkatkan
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Wantasen S, Paat FJ, Ogie TB. 2021. Impact of illegal gold mining on surface water quality. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-9 Tahun 2021, Palembang 20 Oktober 2021. pp. 228-232. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Environmental indicators due to the impact of illegal gold mining can be seen in the decline in surface water quality. It is necessary to conduct research to obtain data and information on the extent to which the gold mining process activities carried out by the community without management are at risk of environmental damage. This study aims to examine the impact of illegal gold mining on the decline in surface water quality. The research method is field observation of illegal gold mining activities and sampling of surface water quality is carried out using the composite method in the Lobok river in Lanut village. The data obtained is data for 2017 and 2019. Analysis of total suspended solids (TSS) in surface water bodies in the laboratory. Data analysis using the Graphic Method and comparing with the Quality Standards according to PP no. 22/2021 Class II. The results showed that the concentration of TSS in the Lobok river 2017 is 24,800 and 2019 is 92,700 mg/l did not meet the quality standard requirements, indicating that it had experienced high ecological pressure.

Control Agents Of Environmentally Friendly Plant Disordering Organisms (Opt) Used Vegetable Farmers In Tomohon City Enderika Enus; Elisabeth R. M. Meray; Jimmy Rimbing; Sofia Wantasen; Defly A. S. Turang
Jurnal Agroekoteknologi Terapan Vol. 3 No. 2 (2022): EDISI JULI-DESEMBER 2022
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v3i2.38267

This research on Environmentally Friendly Control Agents for Plant-Disturbing Organisms (PDOs) Used by Vegetable Farmers aims to identify the kind eco-friendly control agents used by vegetable farmers in the city of Tomohon to cope with Plant-Disturbing Organisms. This study uses survey as its method which was conducted via questionnaire. Forty farmers were surveyed and directly interviewed. The data collected from these questionnaires were then calculated in order to gain the percentage value and displayed in the form of a diagram.The result of this research indicates that only a small number of vegetable farmers in the city of Tomohon use environmentally friendly control agents for plant-disturbing organisms (PDOs). This is made possible due to the fact that both the scarcity of information regarding environmentally friendly control agents (PDOs) and its availability are limited.Â Â Keywords: Controlling agents, environmentally friendlyÂ AbstrakPenelitian mengenai Agen-agen Pengendali Organisme Penggangu Tanaman (OPT) Ramah Lingkungan Yang Digunakan Petani Sayuran Penelitian ini bertujuan untuk mengetahui agen-agen pengendali Organisme Penggangu Tanaman (OPT) ramah lingkungan yang digunakan petani sayuran di Kota Tomohon. Penelitian ini menggunakan metode survei. Survei dilakukan dengan menggunakan kuesioner. Petani yang disurvei sebanyak empat puluh orang, wawancara langsung kepada petani melalui kuesioner. Pengumpulan data kuesioner kemudian dihitung nilai presentase dan ditampilkan dalam bentuk diagram.Hasil penelitian ini menunjukkan bahwa petani sayuran di Kota Tomohon dari ke-4 jenis tanaman yang disurvei baru sebagian kecil yang menggunakan agen pengendali organisme pengganggu tanaman (OPT) ramah lingkungan. Hal ini dimungkinkan karena baik informasi maupun ketersediaan agen-agen pengendali (OPT) ramah lingkungan yang masih sangat terbatas.Kata kunci : Agen-agen pengendali, ramah lingkungan

Study Of Irrigation Water Quality For Rice Fields In Kayawu Village, North Tomohon District, Tomohon City Melkison Sanggel; Sofia Wantasen; Adeleyda M. W. Lumingkewas; Frangky J. Paat
Jurnal Agroekoteknologi Terapan Vol. 4 No. 1 (2023): EDISI JANUARI-JUNI 2023
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/jat.v4i1.44890

This study aims to determine the quality of irrigation water on paddy fields in Kayawu Village, North Tomohon District, Tomohon City. This research was carried out for two (2) months, from September to October 2021. This research was conducted using a survey method, a composite sampling technique. Research samples were taken at two locations, namely the first location upstream and the second location downstream of the rice field irrigation channel in Kayawu Village. Sampling of 3 liters of water at each location, then analyzed at the Laboratory of Research and Industrial Standardization of Manado. The data obtained were analyzed using descriptive statistics. The quality of irrigation water in terms of Parameters: Total Suspended Solid (TSS), the TSS content in the upstream part was 52.2 mg/L and in the downstream part 192 mg/L, still classified as good. Total Dissolved Solid (TDS), TDS levels in the upstream 142 mg/L and in the downstream 241 mg/L, are still relatively good. The levels of Nitrate (NO₃) NO₃ upstream are 6.31 mg/L and downstream are 4 mg/L, still relatively good. The levels of Nitrite (NO₂) NO₂ upstream are 0.00065 mg/L and 0.00065 mg/L in the Downstream, are still relatively good. The levels of Ammonia (NH₃) NH₃ upstream are 0.20 mg/L and in the Downstream are mg/L, are still relatively good. Chloride (Cl), the Cl content in the upstream is 5 mg/L and the downstream is 52 mg/L, is still relatively good. The temperature, at 23.7ºC upstream and 22.5ºC downstream, is still relatively good. The degree of acidity (pH) in the upstream is 7.12 and the downstream is 6.35, which is still relatively good. The results showed that the quality of irrigation water for rice fields in Kayawu Village, North Tomohon District, Tomohon City is still classified as good and meets the requirements as irrigation water in Kayawu, based on Government Regulation No. 22 year 2021. Keywords: Irrigation Water, Irrigation Water Quality, Water Quality Standards Abstrak Penelitian ini bertujuan untuk mengetahui Kualitas air irigasi pada lahan sawah di Kelurahan Kayawu Kecamatan Tomohon Utara, Kota Tomohon. Penelitian ini dilaksanakan selama dua (2) bulan yaitu bulan September sampai bulan Oktober 2021. Penelitian ini dilakukan dengan menggunakan metode survey, teknik pengambilan sampel composite sampling. Sampel penelitian diambil pada dua lokasi yaitu lokasi pertama bagian hulu dan lokasi kedua bagian hilir saluran irigasi areal persawahan di Kelurahan Kayawu. Pengambilan sampel air sebanyak 3 liter ditiap lokasi, kemudian dianalisis di Laboratorium Balai Riset dan Standardisasi Industri Manado. Data yang diperoleh dianalisi menggunakan statistik deskriptif.. Kualitas air irigasi di tinjau dari Parameter :Total Suspended Solid (TSS), kadar TSS pada bagian Hulu 52,2 mg/L dan pada bagian Hilir 192 mg/L, masih tergolong baik. Total Dissolved Solid (TDS), kadar TDS pada bagian Hulu 142 mg/L dan pada bagian Hilir 241 mg/L, masih tergolong baik. Nitrat (NO₃) kadar NO₃ bagian Hulu 6,31 mg/L dan pada bagian Hilir 4 mg/L, masih tergolong baik. Nitrit (NO₂) kadar NO₂ bagian Hulu 0,00065 mg/L dan pada bagian Hilir 0,00065 mg/L, masih tergolong baik. Amonia (NH₃) kadar NH₃ bagian Hulu 0,20 mg/L dan pada bagian Hilir mg/L, masih tergolong baik. Klorida (Cl), kadar Cl pada bagian Hulu 5 mg/L dan pada bagian Hilir 52 mg/L, masih tergolong baik. Suhu, pada bagian Hulu 23,7ºC dan pada bagian Hilir 22,5ºC, masih tergolong baik. Derajat Keasaman (pH) pada bagian Hulu 7,12 dan pada bagian Hilir 6,35, masih tergolong baik. Hasil penelitian menunjukkan bahwa Kualitas Air Irigasi Areal Persawahan Di Kelurahan Kayawu Kecamatan Tomohon Utara Kota Tomohon masih tergolong baik dan memenuhi syarat sebagai Air Iigasi Di Kayawu, berdasarkan Peraturan Pemerintah RI No. 22 tahun 2021. Kata kunci : Air irigasi, Kualitas Air Irigasi, Baku Mutu Air

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