Articles
<![CDATA[Water Status Evaluation on Tertiary Block for Developing Land Use Pattern and Water Management Strategies in Acid Sulfat Soil of Saleh Tidal Lowland Reclamation Areas of South Sumatera ]]>
<![CDATA[Sodik Imanudin, Momon]]>;
<![CDATA[Armanto, M.E.]]>;
<![CDATA[Susanto, R.H.]]>;
<![CDATA[Bernas, S.T.]]>
<![CDATA[ AGRIVITA, Journal of Agricultural Science Vol 32, No 3 (2010) ]]>
Publisher : <![CDATA[Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation ]]>
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<![CDATA[The aimed of the research is to evaluate the water status in the tertiary block of tidal lowland for developing cropping pattern and water management strategies for food crop agriculture. The research was conducted in tidal lowland reclamation areas of Delta Saleh South Sumatera. The methodology used this research was survey and monitoring. Data analysis was done by comparing the water status availability with the potential cropping pattern. Computer model of DRAINMOD had been used to estimate the water table status and to design water table control operation at tertiary blocks. Model adaptation for dry land condition (C-typhology) showed that the best scenario was land utilization pattern of rice-corn. This paper presented monthly water management operational plan for rice crop in first cropping season (MT1) during November-February period and for corn crop in second cropping season (MT2) during May-August period. Keywords: Water status, Tidal lowland, acid sulfate soil, Surplus Excess Water (SEW-30) cm]]>
<![CDATA[Kajian Teknik Aplikasi Drainase Bawah Tanah dengan Menggunakan Bahan Baku Lokal ]]>
<![CDATA[Imanudin, Momon Sodik]]>
<![CDATA[ PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 4, No 1 (2016) ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/pt.2016.051.14-19
<![CDATA[Problems crop cultivation on rain fed land after rice is still too wet for crops, while for rice crop will experience drought on the generative phase. The technology was required to decrease the moisture content of the soil so that crops can be planted after rice. The study aims to examine the application of the use of the underground drainage system to lower the water logging. Local raw materials were used in order to easily adopted by farmers, because common uses of the pipe is still too expensive. The drainage material was made of a collection of coconut husk and wood twigs. As a test medium performed using texture medium sandy clay loam soil and sand. The test results showed that the ability of the drainage flow on coconut fiber, lower than that of wood sticks consecutive 0.37 and 0.48 liters / sec. And the maximum flow capability was shown in the sandy soil of 0.75 and 1.93 liters / sec. Condition of the land with drainage modulus 10mm / day and the structure of materials was used in the field of wood sticks with inter-channel spacing is 10 m, then there is a 10 in 1 ha pipeline, so the ability to discharge to 69 m3 / h. Therefore, it took time for water discharge at 100/69 = 1.45 This means that the potential of using systematically drainage disposal is fit for use primarily in the light texture such as sandy clay loam.]]>
<![CDATA[WATER RETENTION OPTION OF DRAINAGE SYSTEM FOR DRY SEASON CORN CULTIVATION AT TIDAL LOWLAND AREA ]]>
<![CDATA[Bakri, Bakri]]>;
<![CDATA[Imanudin, Momon Sodik]]>;
<![CDATA[Bernas, S. Masreah]]>
<![CDATA[ AGRIVITA, Journal of Agricultural Science Vol 37, No 3 (2015): OCTOBER ]]>
Publisher : <![CDATA[Faculty of Agriculture University of Brawijaya in collaboration with PERAGI ]]>
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DOI: 10.17503/agrivita.v37i3.516
<![CDATA[Corn production obtained was 6.4 t ha-1. This condition was very promising though still below the maximum national production. The aapplications of subsurface drainage was still not optimumum due to the supply of water from the main system was not the same because of the soil physical properties diversity and topography differences.This condition implied that installation of sub-surface drainage at dry season had function as water retention, not as water discharge. There-fore, network function was inverted from water discharge into water retention. It had impact on the development of optimum water surface that flow in capillary mode to fulfill the crop’s water requirement. Farming constraint at tidal lowland area is about water management related to the nature of excessive water during wet season and insuf-ficient water during dry season. This field research objectives was to find out the corn crop culti-vation in August 2014 which entered dry season.The iinstallation of subsurface drainage that previously had functioned as water discharge was converted into water retention. The research results showed that corn had grown well during peak dry season period (October) in which water table was at –50 cm below soil surface, whereas water table depth was dropped to –70 cm below soil surface in land without subsurface drainage.]]>
<![CDATA[Impacts of El Niño Climate Anomaly on Irrigation Scheduling of Maize Crop Using Budget Models under Tropical Climate Conditions ]]>
<![CDATA[Imanudin, Momon Sodik]]>;
<![CDATA[Bakri, Bakri]]>;
<![CDATA[Y, Karimuddin]]>;
<![CDATA[Ratmini, P.]]>
<![CDATA[ PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 1 (2018) ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/pt.2018.080.49-61
<![CDATA[The research aims to calculate the water requirement and irrigation interval of maize crop as well as to design water-efficient irrigation application system. The study was conducted on dry land of Palembang city of South Sumatra. The indicator crop used in this study was maize. Daily climate data were taken from Sultan Mahmud Badarudin and Kenten station. The research applied survey method, laboratory analysis, computer simulation and irrigation design. The calculation of water crop deficiency was done using empirical approach by multiplying the potential evapotranspiration value by crop coefficient. Soil water retention characteristic was recorded based on the calculation of the length of water available to plants. Daily rainfall in the field was recorded as water input other than water from irrigation. The combination of soil, climate and plant physiological properties (Agro-pedo-climatic) will result in a water irrigation system in a region. Water balance analysis was developed by the help of computer model (BUDGET model). The result of computer model analysis shows that maize crop in rainy season does not require irrigation. While for the transition period (March-May), irrigation is required for the flowering phase with a total water requirement of 76.5 mm. During dry season (May-July), irrigation is required with water requirement of 198 mm. Irrigation scheduling is set up 9 times with intervals every 7 days at the beginning of growth and 10 days at the middle and end. While the testing under dry climate conditions (El Niño) using rainfall data in 2015 indicates irrigation should be given since March and during planting period (May-August 2015) the irrigation should be applied 12 times with intervals every 5 days at the initial stage and 10 days during vegetative stage.]]>
<![CDATA[Impacts of El Niño Climate Anomaly on Irrigation Scheduling of Maize Crop Using Budget Models under Tropical Climate Conditions ]]>
<![CDATA[Imanudin, Momon Sodik]]>;
<![CDATA[Bakri, Bakri]]>;
<![CDATA[Y, Karimuddin]]>;
<![CDATA[Ratmini, P.]]>
<![CDATA[ PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 6, No 1 (2018) ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/pt.2018.080.49-61
<![CDATA[The research aims to calculate the water requirement and irrigation interval of maize crop as well as to design water-efficient irrigation application system. The study was conducted on dry land of Palembang city of South Sumatra. The indicator crop used in this study was maize. Daily climate data were taken from Sultan Mahmud Badarudin and Kenten station. The research applied survey method, laboratory analysis, computer simulation and irrigation design. The calculation of water crop deficiency was done using empirical approach by multiplying the potential evapotranspiration value by crop coefficient. Soil water retention characteristic was recorded based on the calculation of the length of water available to plants. Daily rainfall in the field was recorded as water input other than water from irrigation. The combination of soil, climate and plant physiological properties (Agro-pedo-climatic) will result in a water irrigation system in a region. Water balance analysis was developed by the help of computer model (BUDGET model). The result of computer model analysis shows that maize crop in rainy season does not require irrigation. While for the transition period (March-May), irrigation is required for the flowering phase with a total water requirement of 76.5 mm. During dry season (May-July), irrigation is required with water requirement of 198 mm. Irrigation scheduling is set up 9 times with intervals every 7 days at the beginning of growth and 10 days at the middle and end. While the testing under dry climate conditions (El Niño) using rainfall data in 2015 indicates irrigation should be given since March and during planting period (May-August 2015) the irrigation should be applied 12 times with intervals every 5 days at the initial stage and 10 days during vegetative stage.]]>
<![CDATA[VARIABILITY OF GROUND WATER TABLE AND SOME SOIL CHEMICAL CARACHTERISTIC ON TERTIARY BLOCK OF TIDAL LOWLAND AGRICULTURE SOUTH SUMATERA INDONESIA ]]>
<![CDATA[Momon Sodik Imanudin]]>
<![CDATA[ Sains Tanah - Jurnal Ilmu Tanah dan Agroklimatologi Vol 14, No 1 (2017) ]]>
Publisher : <![CDATA[Faculty of Agriculture, Universitas Sebelas Maret ]]>
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DOI: 10.15608/stjssa.v14i1.655
<![CDATA[Agriculture and irrigation policies in the tidal wetlands are often too general, thus at the level of farm units they are often inaccurate in term of quality and quantity. The research purpose was to analyze the groundwater levels and to determine the effect of groundwater levels in relation to some soil chemical characters in tidal wetlands P17-5S Mulyasari village Delta Telang II Banyuasin. Indicators of potential land can be analyzed from parameters of variability of soil acidity, Al and Fe content, organic matter and phosphorus and nitrogen status of the soil. Managed limited area was the smallest unit of water management (tertiary plots). The decision was taken based on the dominant values of the hydro-physical and chemical characters. Input criteria design involved the nature of the soil, land use, and hydrology. The field study and analysis showed dominance in soil physical variability. Around 50% of hydraulic conductivity was classified rapid soil with soil acidity is relatively high, moderate nitrogen, low phosphorus, and moderate potassium. Based on these conditions, cropping pattern applied was rice-corn, rice-water melon, soil fertility can be improved through fertilization of N and P; increasing water gate in the tertiary plots, and the water management aimed to controlled drainage]]>
<![CDATA[Kajian Faktor Pembatas dan Rekomendasi Perbaikan Lahan untuk Budidaya Jagung di Lahan Rawa Pasang Surut Tipologi C: Study of Limiting Factors and Land Rehabilitation Recommendations for Corn Cultivation in Tidal Swamp Land of Tipology C ]]>
<![CDATA[Momon Sodik Imanudin]]>;
<![CDATA[Abdul Madjid]]>;
<![CDATA[Edi Armanto]]>;
<![CDATA[Miftahul]]>
<![CDATA[ Jurnal Ilmu Tanah dan Lingkungan Vol 22 No 2 (2020): Jurnal Ilmu Tanah dan Lingkungan ]]>
Publisher : <![CDATA[Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian, IPB University ]]>
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DOI: 10.29244/jitl.22.2.46-55
<![CDATA[Penelitian bertujuan untuk mengkaji beberapa faktor pembatas lingkungan lahan yang selanjutnya disusun rekomendasi perbaikan, agar tanaman bisa tumbuh sesuai standar produksi. Metode penelitian adalah survai lapangan, monitoring dan pengkajian. Hasil penelitian menunjukan faktor pembatas utama sangat tergantung kepada tingkat kedalaman lapisan firit, dan fluktuasi muka air tanah harian. Selama petani bisa mengendalikan muka air tanah mendekati zona akar maka fakor pembatas lainnya bisa diperbaiki. Beberapa faktor pembatas yang bisa diperbaiki adalah pH tanah masam, hara makro rendah (nitrogen,phospor dan kalium), dan ketersediaan air karena sistem tata air yang buruk. Kajian budidaya tanaman pada kondisi iklim normal ( basah) diama curah hujan dengan bulan kering hanya 2-3 bulan tidak ditemukan pembatas utama yang permanen. Perbaikan tata air dan kesuburan tanah telah mampu menciptakan produksi optimal tanaman jagung 7 ton/ha. Namun pada kondisi iklim kering dimana masa kemarau selama 4-5 bulan maka akan muncuk faktor pembatas utama permanen yang disebabkan oleh oksidasi lapiran firit. Hal ini terjadi karena muka air tanah turun tajam >90 cm. Pada kondisi ini produksi jagung menurun lebih dari 50% area tanam gagal panen karena kekeringan, dan keracunan. Petani yang berhasil adalah yang melakukan penanaman lebih awal yaitu bulan Mei. Sementara yang tanam Juli semua gagal panen. Selain karena curah hujan yang kering juga karena petani tidak melakukan konservasi air. Pintu air tidak dioperasikan untuk menahan air di saluran tersier sehingga kehilangan air lebih cepat. Dampaknya air tanah pada bulan September turun dibawah 90 cm dan terjadilah oksidasi firit. Oleh karea itu operasi pintu sebaiknya dibuka pada saat pasang dan ditutup pada saat surut operasi ini berlansung sampai belum masuk air asin (Agustus). Dan memasuki bulan September dimana telah terjadi intrusi air asin, maka pintu air ditutup permanen. Dari kondisi diatas maka pada kondisi kemarau lebih dari 4 bulan, rekomendasi utama adalah percepatan waktu tanam, pemberian bahan pembenah tanah dan operasi pintu air dengan sistem fullretention.]]>
<![CDATA[Developing Seasonal Operation for Water Table Management in Tidal Lowland Reclamations Areas at South Sumatera, Indonesia ]]>
<![CDATA[Momon Sodik Imanudin]]>;
<![CDATA[Mustika Edi Armanto]]>;
<![CDATA[Robiyanto Hendro Susanto]]>
<![CDATA[ JOURNAL OF TROPICAL SOILS Vol 16, No 3: September 2011 ]]>
Publisher : <![CDATA[UNIVERSITY OF LAMPUNG ]]>
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DOI: 10.5400/jts.2011.v16i3.233-244
<![CDATA[The objective of the study was to develop the water management operational plan at tertiary blocks for the growth of rice and corn. Study was conducted at reclaimed tidal lowland area which was located at Primer 10, Delta Saleh. This area was classified as a C-typhology land (dry). The methods of the study were survey, field measurements, computer simulation, and field action research. Study stages were consisted of survey and monitoring, water status evaluation, water management scenarios design, model simulation, and model adaptation. Computer model of DRAINMOD had been used to estimate the water table status and to design water table control operation at tertiary blocks. Simulation results showed that the model worked properly which was indicated by root mean square error of 1.45 cm, model efficiency of 0.97, and correlation coefficient of 0.84. Model adaptation for dry land condition (C-typhology) showed that the best scenario was land utilization pattern of rice-corn. This paper presented monthly water management operational plan for rice crop in first cropping season (CS1) during November-February period and for corn crop in second cropping season (CS2) during May-August period. Results of computer simulation and field study showed that the main objective of water management in this area was water retention in combination with land leaching.]]>
<![CDATA[Drainmod Model Adaptation for Developing Recommendations Water Management in the Tertiary Block of Tidal Lowland Agriculture ]]>
<![CDATA[Momon Sodik Imanudin]]>;
<![CDATA[Bakri Bakri]]>;
<![CDATA[Mustika Edi Armanto]]>;
<![CDATA[Abdul Madjid Rohim]]>
<![CDATA[ JOURNAL OF TROPICAL SOILS Vol 26, No 3: September 2021 ]]>
Publisher : <![CDATA[UNIVERSITY OF LAMPUNG ]]>
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DOI: 10.5400/jts.2021.v26i3.129-140
<![CDATA[The primary key to successful agricultural cultivation is maintaining the groundwater level to fulfill crop water requirements, particularly during the dry season. Field study was conducted in Tidal reclamation area of section 25 at Sugihan Kanan, Bandar Jaya Village, Air Sugihan, Ogan Komering Ilir District of South Sumatra. The DRAINMOD computer model was used to simulate water levels in dry and wet climatic conditions. The principal measured parameters are soil hydraulic conductivity and drain spacing, as well as daily rainfall data. The simulation results showed that the research area belongs to the rainfed type, and the main objective of water management is to retain water and determine some efforts to increase the groundwater level through pump irrigation in the dry season. The application of pump irrigation was applied to the plant entering the generative phase. The pump irrigation was provided to distribute water into the quarter and worm (micro) channels. The effect of this application caused the groundwater level to approach about 30 cm below the soil surface, while groundwater level in areas without pump irrigation facility was in the range of 50-60 cm. Besides efforts to increase the water table, liming is still required in order to increase production. Lime application of 1 Mg ha-1 had a significant effect on increasing production. Corn production with this treatment could produce 5 Mg ha-1, while non-treated land areas only produce 2-3 Mg ha-1.]]>
<![CDATA[Water Table Fluctuation in Tidal Lowland for Developing Agricultural Water Management Strategies ]]>
<![CDATA[Momon Sodik Imanudin]]>;
<![CDATA[Edi Armanto]]>;
<![CDATA[Robiyanto Hendro Susanto]]>;
<![CDATA[Siti Masreah Bernas]]>
<![CDATA[ JOURNAL OF TROPICAL SOILS Vol 15, No 3: September 2010 ]]>
Publisher : <![CDATA[UNIVERSITY OF LAMPUNG ]]>
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DOI: 10.5400/jts.2010.v15i3.277-282
<![CDATA[Water Table Fluctuation in Tidal Lowland for Developing Agricultural Water Management Strategies (MS Imanuddin, E Armanto, RH Susanto and SM Bernas):The research objective is to evaluate the water status in the tertiary block of tidal lowland for developing water management strategies and cropping pattern for food crop agriculture. The research was conducted in tidal lowland reclamation areas of Delta Saleh South Sumatera. The methodology used in this research was survey and monitoring. The result showed that the study area has a potential of acid sulphate soil which is indicated by phyrite layer at 60 cm below the soil surface. Variation of water table was very high in the range of 0-2 cm at rainy season and it was drop up to 90 to 100 cm below soil surface at dry season. This conditions result in the soil oxidation and the pH drop up to 2.5-3.5 (very acid). Analysis of water surplus and deficit during one year period was calculated by surplus excess water under 30 cm (SEW-30) and showed that the area study was experienced water deficit. Analysis of groundwater effect on soil moisture content showed that the critical water level was in 60 cm below soil surface. The soil moisture content at this point in the root zone was dropped into the wilting point level. It means that the water availability for crop water requirement is inadequate. For sustainable agriculture in the area study, the water table should be maintained in 50-60 cm below soil surface. Therefore, the recommendation of water management strategies in the study area is water retention in combination with control drainage system.]]>
