Siti Mechram
Siti Mechram1, Muhjidin Mawardi2, Putu Sudira2

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The Application of Drip Irrigation Technique and Artificial Planting Media in the Cultivation of Lettuce (Lactuca sativa) Mechram, Siti
Jurnal Teknologi Pertanian Vol 7, No 1 (2006)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The effort to develop artificial planting media and technique for more practical irrigation in the cities growing since the area of land available for farming is getting less. A glass house experiment was run to compare the performance of three types of planting media, i.e. 100% rice husk charcoal (RHC), a mixture of RHC (50%) and andosol (50%) and 100% andosol, which was watered in periodical (once a day, once in two days and once in three days respectively) by means of drip irrigation technique. A weekly observation were made on plant growth parameters (plant height, number of leaves, wide, length and the area of leaves) and the shoot length. A daily observation was performed for the room temperature (in the morning, noon and afternoon) and amount of water needed for irrigation. The plant was harvested after 31 days and the yield was determined by gravimetry method for fresh vegetable and in a dry form. The result showed that the use of a mixture between RHC (50%) and 50% andosol watered once ion two days gave the best plant growth and production yield.   Keywords: Planting Media, watering interval, lettuce, drip irrigation
Head Loss Determination along Pipe of Drip Irrigation System using Small Pipe Emitter Made From Local Material Mechram, Siti
Jurnal Teknologi Pertanian Vol 9, No 2 (2008)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Irrigation is an important factor in agricultural rop planting trickle or drip irrigation method is casier in operational, reguire a lower operational pressure and has a possibility to make from local material. Drip irrigation is a method of water application in form of drip on the soil surface or subsurface. Head loss along lateral is a common problem found in this method caused high variation in emitter discharge. This research aimed to determine emitter head loss along lateral, impact of emitter discharge on operational pressure, pipe diameter and treatment applied on lateral. This research utilized small pipe (1.6 mm in diameter) as emitter. Output discharge more collected and analyzed using complete random design method having 3 level of pressure (4, 6, and 8 psi) and 3 level of lateral diameter (1/3, ¾, and 1 inchi). Head loss calculated using Darcy-Weisbach formula. Result showed a trend of increasing emitter discharge by increasing operational pressure. Increasing in emitter discharge was also found when a larger diameter used in system. Discreasing in head loss was detected when higher pressure a larger lateral used. Emitter uniformity coeffisien, calculated using cristiansen formula, was 91.2 % showing a selected emitter type was acceptable for drip irrigation method.Keywords: emitter, head lose, drip irrigation
ANALISIS PENGARUH SIFAT REOLOGI TERHADAP KEHILANGAN ENERGI PADA SISTEM TRANSFER SUSU Mechram, Siti; Darwin, Darwin; Ratna, Ratna
AGRICOLA Vol 3 No 2 (2013): Volume 3, Nomor 2, September 2013
Publisher : Universitas Musamus, Merauke, Papua

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Abstract

This research aimed to know the influence of rheological properties of cream to energy losses that occured during transporting process. In addition, this research was conducted by using a computer programming designed for calculating and analysing any complicated data. Those rheological properties were derived from analysis in the laboratory, such as viscosity from any kind of cream. Results analysed by a computer programming revealed that flow behaviour Index (n) and consistency coefficient (m) were the rheological properties interacting with each other since these parameters were the viscosity of cream that influences energy losses in the transport system. Once the total of energy losses was obtained from the system, the pump power required for transfering the product also can be known. Based on the simulation conducted by using rheological parameters of cream with consistency coefficient of 4.5 PaSn, and flow behaviour Index at 0.772 was obtained total energy losses at 282.76 J/kg with the pump power requirement at 0.285 kW. Once consistency coefficient was 7.16 PaSn, and flow behaviour Index was at around 0.768, the total of energy losses increased to 426.30 J/Kg with pump power requirement at 426.30 J/Kg
PEMODELAN DAERAH TANGKAPAN AIR WADUK KELILING DENGAN MODEL SWAT (Keliling Reservoir Catchment Area Modeling Using SWAT Model) Ferijal, Teuku; Mechram, Siti; Jayanti, Dewi Sri; Satriyo, Purwana
Jurnal Agritech Vol 35, No 01 (2015)
Publisher : Jurnal Agritech

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Abstract

This study aimed to model watershed area of Keliling Reservoir using SWAT model. The reservoir is located in Aceh Besar District, Province of Aceh. The model was setup using 90m x 90m digital elevation model, land use data extracted from remote sensing data and soil characteristic obtained from laboratory analysis on soil samples. Model was calibratedusing observed daily reservoir volume and the model performance was analyzed using RMSE-observations standard deviation ratio (RSR), Nash-Sutcliffe efficiency (NSE) and percent bias (PBIAS). The model delineated the study area into 3,448 Ha having 13 subwatersheds and 76 land units (HRUs). The watershed is mostly covered by forest (53%)and grassland (31%). The analysis revealed the 10 most sensitive parameters i.e. GW_DELAY, CN2, REVAPMN, ALPHA_BF, SOL_AWC, GW_REVAP, GWQMN, CH_K2 and ESCO. Model performances were categorized into very good for monthly reservoir volume with ENS 0.95, RSR 0.23, and PBIAS 2.97. The model performance decreased when it used to analyze daily reservoir inflow with ENS 0.55, RSR 0.67, and PBIAS 3.46.Keywords: Keliling Reservoir, SWAT, Watershed ABSTRAKPenelitian ini bertujuan untuk untuk memodelkan daerah tangkapan air Waduk Keliling dengan menggunakan Model SWAT. Waduk Keliling terletak di Kabupaten Aceh Besar, Propinsi Aceh. Dalam penelitian ini Model SWAT dikembangkan berdasarkan data digital elevasi model resolusi 90 m x90 m, tata guna lahan yang diperoleh dari intepretasi citra satelit dan data soil dari hasil analisa sampel tanah yang diperoleh di daerah penelitian. Model dikalibrasi dengan data volume waduk dan kinerja model dianalisa menggunakan parameter rasio akar rata-rata kuadrat error dan standard deviasi observasi (RSR), efesiensi Nash-Sutcliffe (NSE) dan persentase bias (PBIAS). Hasil deleniasi untuk daerah penelitian menghasilkan suatu DAS dengan luas 3,448 Ha dan memiliki 13 Sub DAS yang dikelompokkan menjadi 76 unit lahan.Sebagian besar wilayah study ditutupi oleh hutan (53%), dan pandang rumput (31%). Hasil analisa menunjukkan bahwa 10 parameter model yang sangat mempengaruhi debit adalah GW_DELAY, CN2, REVAPMN, ALPHA_BF, SOL_AWC, GW_REVAP, GWQMN, CH_K2 dan ESCO. Kinerja model sangat baik dalam memprediksikan volume tampungan waduk bulanan dengan nilai ENS 0,95, RSR 0,23, dan PBIAS 2,97. Namun, kinerja model menurun ketika mensimulasikan debit inflow harian dengan nilai-nilai ENS 0,55, RSR 0,67, dan PBIAS 3,46.Kata kunci: Waduk Keliling, SWAT, Daerah Tangkapan Air
Aplikasi Model AVSWAT2000 untuk Prediksi Limpasan Permukaan, Erosi, dan Sedimentasi di Sub Das Keduang: Das Bengawan Solo Hulu Mechram, Siti; Mawardi, Muhjidin; Sudira, Putu
Agritech Vol 32, No 3 (2012)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (306.536 KB) | DOI: 10.22146/agritech.9609

Abstract

Erosion rate data obtained from the hydrological model can be used in making decisions to determine which landconservation efforts can reduce the rate of soil erosion in the watershed. The hydrologic model applied is AVSWAT2000(Arc View Soil and Water Assessment Tools 2000) to predict surface runoff, erosion, and sedimentation. This studywas conducted at sub watershed Keduang (36.574,34 Ha). The results indicated that surface runoff, erosion, andsedimentation in Keduang watershed at the existing condition are 424,09 mm, 87,87 ton/ha/th, and 375,07 ton/th,respectively. By simulation be adjusting the land use scenario, the surface runoff, erosion, and sedimentation rate couldbe reduce to become : 412,61 mm, 36,78 ton/ha/th, 353,60 ton/th, respectively, In Keduang watershed.ABSTRAKData laju erosi yang diperoleh dari model hidrologi dapat digunakan dalam pengambilan keputusan untuk menentukanusaha konservasi lahan yang dapat mengurangi laju erosi yang terjadi di DAS. Model hidrologi yang dipergunakan dalam penelitian ini adalah model AVSWAT2000 (Arc View Soil and Water Assessment Tools 2000) yang dapatmemprediksi limpasan permukaan, erosi dan sedimentasi. Penelitian ini dilakukan di sub DAS Keduang (36.574,34Ha). Hasilnya menunjukkan bahwa, besarnya limpasan permukaan, erosi dan sedimentasi di sub DAS Keduang padakondisi saat ini masing-masing sebesar 424,09 mm, 87,87 ton/ha/th, dan 375,07 ton/th. Dengan melakukan perubahanpenggunaan lahan jumlah limpasan permukaan, erosi dan sedimentasi bisa mengalami penurunan, di sub DAS Keduanglaju limpasan permukaan, erosi dan sedimentasi menurun masing-masing menjadi 412,61 mm, 36,78 ton/ha/th, dan353,60 ton/th.
Pemodelan Daerah Tangkapan Air Waduk Keliling dengan Model SWAT Ferijal, Teuku; Mechram, Siti; Jayanti, Dewi Sri; Satriyo, Purnama
Agritech Vol 35, No 1 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.092 KB) | DOI: 10.22146/agritech.13037

Abstract

This study aimed to model watershed area of Keliling Reservoir using SWAT model. The reservoir is located in Aceh Besar District, Province of Aceh. The model was setup using 90m x 90m digital elevation model, land use data extracted from remote sensing data and soil characteristic obtained from laboratory analysis on soil samples. Model was calibrated using observed daily reservoir volume and the model performance was analyzed using RMSE-observations standard deviation ratio (RSR), Nash-Sutcliffe efficiency (NSE) and percent bias (PBIAS). The model delineated the study area into 3,448 Ha having 13 subwatersheds and 76 land units (HRUs). The watershed is mostly covered by forest (53%) and grassland (31%). The analysis revealed the 10 most sensitive parameters i.e. GW_DELAY, CN2, REVAPMN, ALPHA_BF, SOL_AWC, GW_REVAP, GWQMN, CH_K2 and ESCO. Model performances were categorized into very good for monthly reservoir volume with ENS 0.95, RSR 0.23, and PBIAS 2.97. The model performance decreased when it used to analyze daily reservoir inflow with ENS 0.55, RSR 0.67, and PBIAS 3.46.ABSTRAKPenelitian ini bertujuan untuk untuk memodelkan daerah tangkapan air Waduk Keliling dengan menggunakan Model SWAT. Waduk Keliling terletak di Kabupaten Aceh Besar, Propinsi Aceh. Dalam penelitian ini Model SWAT dikembangkan berdasarkan data digital elevasi model resolusi 90 m x90 m, tata guna lahan yang diperoleh dari intepretasi citra satelit dan data soil dari hasil analisa sampel tanah yang diperoleh di daerah penelitian. Model dikalibrasi dengan data volume waduk dan kinerja model dianalisa menggunakan parameter rasio akar rata-rata kuadrat error dan standard deviasi observasi (RSR), efesiensi Nash-Sutcliffe (NSE) dan persentase bias (PBIAS). Hasil deleniasi untuk daerah penelitian menghasilkan suatu DAS dengan luas 3,448 Ha dan memiliki 13 Sub DAS yang dikelompokkan menjadi 76 unit lahan. Sebagian besar wilayah study ditutupi oleh hutan (53%), dan pandang rumput (31%). Hasil analisa menunjukkan bahwa 10 parameter model yang sangat mempengaruhi debit adalah GW_DELAY, CN2, REVAPMN, ALPHA_BF, SOL_AWC, GW_REVAP, GWQMN, CH_K2 dan ESCO. Kinerja model sangat baik dalam memprediksikan volume tampungan waduk bulanan dengan nilai ENS 0,95, RSR 0,23, dan PBIAS 2,97. Namun, kinerja model menurun ketika mensimulasikan debit inflow harian dengan nilai-nilai ENS 0,55, RSR 0,67, dan PBIAS 3,46.
APLIKASI SIG UNTUK PEMETAAN DAN PENYUSUNAN BASISDATA RUANG TERBUKA HIJAU (RTH) PERKOTAAN (STUDI KASUS: KOTA BANDA ACEH) Jayanti, Dewi Sri; Mechram, Siti
Jurnal Teknologi Pertanian Andalas Vol 19, No 1 (2015)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jtpa.19.1.27-23.2015

Abstract

Kota Banda Aceh memiliki jumlah penduduk besar dan pertambahan penduduk yang tinggi dan terus meningkat akan memberikan implikasi pada tingginya tekanan terhadap pemanfaatan ruang kota. Beberapa tahun terakhir, kualitas ruang terbuka hijau (RTH) Kota Banda Aceh mengalami penurunan akibat menurunnya kualitas lingkungan perkotaan seperti terjadi banjir, tingginya polusi udara, menurunnya keserasian lingkungan perkotaan serta terbatasnya ruang yang tersedia untuk interaksi sosial. Penelitian ini bertujuan untuk mengetahui luasan RTH Kota Banda Aceh; membuat aplikasi program basisdata RTH serta menyediakan informasi persebaran RTH Kota Banda Aceh. Proporsi Kota Banda Aceh yang harus dijadikan kawasan RTH minimal seluas 1.799,37 ha. Total RTH Kota Banda Aceh eksisting yang tersedia 2.136,79 ha (35,63%) dari luas kota. RTH publik eksisting yang tersedia 651,53 ha dari luas wilayah sehingga mengalami kekurangan 548,05 ha. RTH privat yang tersedia 1.485,26 ha sehingga kondisi RTH privat memenuhi standar kecukupan yang ditetapkan. Aplikasi program berjalan dan terkoneksi dengan baik sehingga dapat memberikan informasi Ruang Terbuka Hijau di Kota Banda Aceh kepada pengguna informasi.Kata kunci: Basisdata, Kota Banda Aceh, Ruang Terbuka Hijau (RTH), Sistem Informasi Geografis, Visual Basic.Net 2008