scholarly journals PENGOPTIMALAN LUASAN LAHAN PERTANIAN TERHADAP KETERSEDIAN AIR PADA DAERAH IRIGASI TAMPA KABUPATEN BARITO TIMUR

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
Rony Riduan ◽  
Asmara Hadisaputro
Keyword(s):  
Water Availability ◽  
Water Demand ◽  
Water Requirement ◽  
Cropping Pattern ◽  
Cropping Patterns ◽  
Minimum Requirement ◽  
Irrigation Area ◽  
Rice Plants ◽  
Maximum Water ◽  
Optimal Cropping

Daerah Irigasi Tampa yang terletak di Kecamatan Paku, Kabupaten Barito Timur, Provinsi Kalimantan dengan luas baku sawah pada 2000 Ha, memiliki layanan jaringan irigasi sebesar 1.278 ha, Namun pada hanya terdapat 500 Ha yang dapat di manfaatkan untuk pertanian. Penelitian ini bertujuan untuk menganalisis ketersediaan serta kebutuhan air untuk pola tanam yang optimal. Penelitian ini memberikan solusi pola tanam yang optimal terhadap luasan lahan pertanian menggunakan sorfware bantu (weap, cropwat dan pomqm). Penelitian ini menggunakan beberapa perhitungan antara lain perhitungan curah hujan efektif, evapotranspirasi serta debit andalan. Selanjutnya dilakukan perhitungan ketersediaan air eksisting pada Daerah irigasi Tampa sesuai pola tanam yang ada. Tahapan selanjutnya dilakukan perhitungan kebutuhan air untuk pola tanam optimal. Hasil analisis ketersedian air dan kebutuhan air memberikan nilai debit maksimum 0,226 m3/dtk dan untuk debit minimum sebesar 0,154 m3/dtk dan kebutuhan air maksimum sebesar 9,684 mm/hr. Pengoptimalan dilakukan dengan 2 alternatif pola tata tanam dan menggunkan jenis tanaman padi unggul yakni alternatif pertama padi-padi-palawija dan alternatif ke dua padi-palawija-padi. Hasil perhitungan alternatif pertama adalah kebutuhan air maksimum sebesar 0,117 m3dtk dan kebutuhan minimum sebesar 0,003 m3/dtk. Untuk alternatif ke dua didapat kebutuhan air maksimum sebesar 0,146 m3/dtk dan kebutuhan minimum adalah sebesar 0,025 m3/dtk. Hasil pengoptimalan alternatif kedua didapat tanaman Padi 109 Hektar dan 111 hektar. Untuk Hasil Optimasi alternatif ke dua didapat 378,52 hektar padi dan 250,9 hektar tanaman palawija. Berdasarkan analisis diatas, alternatif pola tata tanam ke dua lebih optimal dalam memberikan produktifitas hasil tanaman dengan asumsi untuk padi unggul adalah 10 ton/ha dan palawija 2,3 ton/ ha maka didapat sebesar 3785,2 ton/ tahun untuk tanaman padi unggul dan 577,1 ton/ tahun untuk tanaman palawija. Kata kunci: irigasi tampa, kebutuhan air, ketersediaan air, pengoptimalan.  The Tampa Irrigation Area, which is located in Paku District, East Barito Regency, Kalimantan Province, with an area of 2000 Ha of raw rice fields, has an irrigation network service of 1,278 ha, however only 500 Ha can be utilized for agriculture. This study aims to analyze the availability and demand for water for optimal cropping patterns. This research provides optimal cropping pattern solutions for agricultural land area using auxiliary software (weap, cropwat and pomqm). This study uses several calculations including the calculation of effective rainfall, evapotranspiration and mainstay discharge. Furthermore, the calculation of the availability of existing water in the Tampa irrigation area is carried out according to the existing cropping pattern. The next step is to calculate the water requirement for optimal cropping patterns. The results of the analysis of water availability and water demand give a maximum discharge value of 0.226 m3/s and for a minimum discharge of 0.154 m3/s and a maximum water requirement of 9.684 mm/day. Optimization is done with 2 alternative cropping patterns and using superior types of rice plants, namely the first alternative is rice-rice-palawija and the second alternative is rice-palawija-rice. The result of the first alternative calculation is that the maximum water requirement is 0.117m3 s and the minimum requirement is 0.003 m3/s. For the second alternative, the maximum water requirement is 0.146 m3/s and the minimum requirement is 0.025 m3/s. The results of the second alternative optimization obtained rice plants of 109 hectares and 111 hectares. For the second alternative optimization results obtained 378.52 hectares of rice and 250.9 hectares of secondary crops. Based on the above analysis, the second alternative cropping pattern is more optimal in providing crop productivity with the assumption that for superior rice is 10 tons/ha and palawija 2.3 tons/ha, it is obtained 3785.2 tons/year for superior rice plants and 577 ,1 ton/year for secondary crops. Keywords: optimization, tampa irrigation, water availability, water demand.

Impact of Optimal Cropping Patterns on Incomes in a Punjab District

1976 ◽  
Vol 15 (2) ◽  
pp. 218-221
Author(s):  
M. Arshad Chaudhry
Keyword(s):  
Developing Countries ◽  
Linear Programming ◽  
Short Note ◽  
Cropping Pattern ◽  
Small Farms ◽  
Cropping Patterns ◽  
Punjab Province ◽  
Optimal Cropping

To improve farm incomes in developing countries, the foremost question that the farmer must address himself to is: what cropping pattern best uses the fixed resources in order to get the highest returns? During the last decade, the agricultural economists have shown great interest in applying the tools of linear programming to individual farms. Most of the studies conducted elsewhere have shown that, under existing cropping pattern, farm resources were not being utilized optimally on the small farms.[l, 4]. We conducted a survey in the canal-irrigated areas of the Punjab province of Pakistan1 to investigate into the same problem. This short note aims at identifying the opti¬mal cropping pattern and to estimate the increase in farm incomes as a result of a switch towards it on the sampled farms.

scholarly journals ANALISA POTENSI WADUK RUKOH DALAM MEMENUHI KEBUTUHAN AIR DI KABUPATEN PIDIE, INDONESIAANALYSIS OF RUKOH RESERVOIR POTENCY FOR DETERMINING WATER REQUIREMENT IN PIDIE DISTRICT, INDONESIA

Agromet ◽  
2011 ◽  
Vol 25 (1) ◽  
pp. 9
Author(s):  
Siti Nurdhawata ◽  
Bambang Dwi Dasanto
Keyword(s):  
Water Availability ◽  
Water Demand ◽  
Model Calibration ◽  
Water Shortage ◽  
Observation Data ◽  
Domestic Water ◽  
Tank Model ◽  
Irrigation Area ◽  
Excess Water ◽  
Balance Analysis

<em>Generally, reservoir can overcome problem of water availability in particular region. The reservoir collects excess water during rainy season to be used at the time of water shortage during dry season. In Pidie, the largest water sources are from Krueng Baro Geunik and Krueng Tiro. The reservoir is located at Krueng Rukoh with Krueng Tiro as the source of water supply. The reservoir provides water for irrigating and supplying domestic water in Baro (11.950 ha) and Tiro (6.330 ha) areas. There are 13 districts (216718 inhabitants) use the water from this reservoir. Given the population growing at rate of 0.52% then the water demand in the region increases. The aim of study was to estimate the volume of water entering the reservoir using the tank model. Calibration curve between the tank model output and observation data showed good correlation (R<sup>2</sup> = 0.7). The calibrated model was then used to calculate the discharge at Krueng Baro Geunik. A water balance analysis showed that the highest deficit occurred in September and the highest surplus in November. Based on this analysis, the capacity of Krueng Rukoh reservoir is able to fulfill its function assuming the rate of population growth and the irrigation area are constant.</em>

scholarly journals Self-adaptive multi-population-based Jaya algorithm to optimize the cropping pattern under a constraint environment

2019 ◽  
Vol 22 (2) ◽  
pp. 368-384
Author(s):  
Vijendra Kumar ◽  
S. M. Yadav
Keyword(s):  
Population Based ◽  
Cropping Pattern ◽  
Jaya Algorithm ◽  
Net Benefit ◽  
Invasive Weed ◽  
Cropping Patterns ◽  
Net Benefits ◽  
Optimal Cropping ◽  
Teaching Learning ◽  
Self Adaptive

Abstract Increasing population around the world, especially in India and China, has resulted in a drastic increase in water intake in both domestic and agricultural sectors. This, therefore, requires that water resources be planned and controlled wisely and effectively. With this consideration, the aim of the study is to achieve an optimal cropping pattern under a constrained environment. The objective is to maximize the net benefits with an optimum use of water. For optimization, a self-adaptive multi-population Jaya algorithm (SAMP-JA) has been used. For the Karjan reservoir in Gujarat State, India, two different models, i.e. maximum and average cropping patterns, were formulated based on the 75 per cent dependable inflow criteria. These two model scenarios are developed in such a way that either model can be selected by the farmer based on the crop area and its respective net benefits. Invasive weed optimization (IWO), particle swarm optimization (PSO), differential evolution (DE) and the firefly algorithm (FA) were compared to the results. The results show that the SAMP-JA obtained the maximum net benefit for both the models. The findings of the research are also compared with the actual cropping pattern. A significant increase has been noted in the cultivation of sugarcane, groundnut, wheat, millet, banana and castor. SAMP-JA has been noted to converge faster and outperforms PSO, DE, IWO, FA, teaching–learning-based optimization (TLBO), the Jaya algorithm (JA), elitist-JA and elitist-TLBO.

scholarly journals Studi Peningkatan Intensitas Luas Dan Pola Tanam Pada Daerah Irigasi Krueng Jreue

2018 ◽  
Vol 1 (3) ◽  
pp. 141-149
Author(s):  
Faisal Faisal ◽  
Alfiansyah Yulianu ◽  
Ella Mailianda
Keyword(s):  
Water Balance ◽  
Cropping Pattern ◽  
Cropping Intensity ◽  
Cropping Patterns ◽  
Irrigation Area ◽  
Discharge Water ◽  
Cropping Season ◽  
Rice Area ◽  
Study Results ◽  
Crop Area

Krueng Jreue irrigation area is one of the oldest irrigation in Aceh Besar district, located in the District of Indrapuri, was inaugurated in 1972 by President Soeharto. Rice area irrigated by this irrigation is 4277.6 ha. Jreue Krueng irrigated areas have rice-rice cropping intensity of plants ranging from 158% to 156%. The intensity of these plants are still below the expected crop intensity, is equal to 200%. To increase the intensity of these plants, it is necessary to study the increased intensity of Krueng Jreue tanamana irrigation area by selecting the appropriate alternative cropping patterns according to the water balance. This study aims to determine the amount of discharge mainstay available on the weir, know the size of the crop water requirement for each alternative, determine optimal crop area that can be irrigated by water that is available, and conduct studies on water balance based cropping planned. Expected to describe the water balance of alternative cropping patterns were obtained. The method used in this research including data collection and data analysis to determine the mainstay discharge, water irrigation, cropping pattern and cropping intensity. The study results obtained by the intensity of the plants can reach 200% by the water supply system using the technical rotation irrigation area is divided into two groups. The first type, cropping season from October period to 2. The second class of the cropping season from November to 2.

scholarly journals Evaluation of surface water for agricultural irrigation in Lobalain District, Rote Ndao Regency, East Nusa Tenggara Province, Indonesia

2021 ◽  
Vol 930 (1) ◽  
pp. 012057
Author(s):  
R R Riady ◽  
W Wilopo ◽  
I W Warmada
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Water Discharge ◽  
Surface Water Quality ◽  
Quality Analysis ◽  
Agricultural Irrigation ◽  
Cropping Pattern ◽  
Cropping Patterns ◽  
Irrigation Area ◽  
Rice Productivity

Abstract The average rice productivity of the Rote Ndao Regency is still below the national rice productivity. The cropping pattern’s lack of management and limited water sources can only be planted once a year. This study aims to determine the availability and quality of surface water used for irrigation with the existing rice-corn-fallow cropping pattern. The research was carried out by measuring discharge in the field, surveying the types and cropping patterns, irrigation area research, surface water quality analysis, and hydrological analysis. The results showed that the need for irrigation water for agriculture in the study area with the current cropping pattern was 0.84 lt/second/ha. Therefore, the existing irrigation area of ±3,762.00 Ha requires a water discharge of ±3.159 m3/second. The availability of surface water in the Lobalain District is low, with a discharge of ±1.598 m3/second. Surface water quality shows the percentage of sodium (Na%) dominated by excellent to permissible class, and the sodium adsorption ratio (SAR) excellent. The existing resource of surface water could not support agricultural irrigation. Therefore, it is necessary to find an alternative water source such as groundwater.

scholarly journals Analisis Ketersediaan Air DAS Sausu Untuk Kebutuhan Air Pada D.I. Sausu Bawah, Kabupaten Parigi Moutong

2020 ◽  
pp. 63-74
Author(s):  
W. Andita ◽  
S. Lipu
Keyword(s):  
Data Analysis ◽  
Wind Speed ◽  
Relative Humidity ◽  
Water Availability ◽  
Water Demand ◽  
Irrigation Scheme ◽  
Average Value ◽  
Maximum Value ◽  
Modification Method ◽  
Maximum Water

This study aims to grasp and analyze the water availability in Sausu Watershed and the need of water in Lower Sausu Irrigation Scheme. The research begins with data collection and hydro-climatological analysis to determine whether the water is enough or not enough to be used during a hydrological period. To obtain the comparison between the needs and availability of water, a hydro-climatological analysis and calculation of water need are carried out. Methods that used namely the Penman Modification method and the F.J Mock method. Penman modification method is used to calculate monthly evapotranspiration (ETo) by taking into account climatological factors such as air temperature, wind speed, solar radiation and relative humidity. By applying the F.J.Mock method for calculating the water availability, the amount of water flow from the rain, characteristics of the drainage area and evapotranspiration can be calculated. Based on the results of data analysis for Sausu watershed area of 568.64 km², it shows that the average value of water availability in the lower intake for 1 year is app. 30.19 m³/sec with the maximum value of app. 48.149 m3/sec and the minimum is app. 4.134 m3/sec. Whereas the maximum water demand in the Lower Sausu irrigation scheme is app. 1.77 m³/sec with the minimum of 0.04 m3 /sec and the average is app. 0.49 m3/sec. It can be concluded that the water availability in the Sausu River Basin is sufficient to meet the water needs of the Lower Sausu Irrigation Scheme throughout the year, or there is a continuous surplus.

scholarly journals OPTIMASI PENGELOLAAN AIR BENDUNG CAWAK UNTUK DAERAH IRIGASI CAWAK DENGAN PROGRAM SOLVER (Studi kasus : Kemanteren Nglumber_Kecamatan Kepohbaru_Kabupaten Bojonegoro)

EXTRAPOLASI ◽  
2021 ◽  
Vol 18 (1) ◽  
pp. 25-32
Author(s):  
Hudhiyantoro Hudhiyantoro ◽  
Bayu Aji Dwi Saputro
Keyword(s):  
Water Availability ◽  
Irrigation Water ◽  
Optimization Model ◽  
Optimization Method ◽  
Cropping Pattern ◽  
Dam Reservoir ◽  
Water Requirements ◽  
Area Mt ◽  
Irrigation Area ◽  
Irrigated Area

AbstractBendung Cawak is located in the district of Kepohbaru, Bojonegoro. Bendung Cawak is used for irrigation and water supplies of Kepohbaru, water availability is insufficient, while the amount of land and also residents who need water, so optimization Bendung Cawak is necessary for the water pitcher bendung can be optimized according to the needs.In this study, to maximize the area of land irrigated area to be optimized. In the optimization model used is the optimization of the monthly for 1 year by calculating the area of irrigated land available, land irrigation is met, the greater availability of water and irrigation needs are met. Optimization method used in this calculation is Program Solver.The results obtained by the reliable discharge available in the Cawak dam reservoir are 2.547 m3 / second. The need for irrigation water with the cropping pattern of Palawija-Padi-Padi at the beginning of planting in August I is 0.579 l / sec / ha as a planting plan with the minimum water requirements. As well as optimization, the optimum cropping pattern and initial planting are August I with the Palawija-Padi-Padi planting intensity 291% and with irrigation area MT I 675 ha, MT II 742 ha, MT III 742 ha. AbstrakBendung Cawak terletak di Kecamatan Kepohbaru, Kabupaten Bojonegoro. Layanan Bendung Cawak dipergunakan untuk keperluan irigasi di Daerah Irigasi Cawak Kecamatan Kepohbaru, ketersediaan air yang tidak mencukupi sedangkan banyaknya lahan yang membutuhkan air , sehingga Optimasi Bendung Cawak sangat diperlukan agar air tampungan Bendung dapat dioptimalkan sesuaidengan kebutuhan.Pada studi ini, untuk memaksimalkan luas lahan irigasi dilakukan optimasi luas lahan irigasi . Dalam model optimasi yang digunakan adalah optimasi satu bulanan selama 1 tahun dengan memperhitungkan luas lahan irigasi yang tersedia, luas lahan irigasi yang terpenuhi, besarnya ketersediaan debit air maksimal, dan kebutuhan air irigasi yang dipenuhi. Metode optimasi yang digunakan dalam perhitungan ini yaitu Program Solver.Hasil yang diperoleh debit andalan yang tersedia di tampungan bendung cawak adalah 2,547 m3/detik. kebutuhan air irigasi dengan pola tanam Palawija-Padi-Padi awal tanam Agustus I itu sebesar 0,579 lt/dtk/ha sebagai rencana tanam dengan kebutuhan air paling minimum.Serta optimasi didapatkan pola tanam dan awal tanam yang paling optimum adalah Agustus I dengan pola tanam Palawija-Padi-Padi intensitas tanam 291% dan dengan luas areal irigasi MT I 675 ha, MT II 742 ha, MT III 742 ha.

scholarly journals Optimal Land And Water Allocation Model For The Maximization of Net Agricultural Return In Drought Prone Regions

2021 ◽  
Author(s):  
Mulu Sewinet Kerebih ◽  
Ashok Kumar Keshari
Keyword(s):  
Water Resources ◽  
Rainfall Variability ◽  
Resources Allocation ◽  
Command Area ◽  
Cropping Pattern ◽  
Water Resources Allocation ◽  
Allocation Model ◽  
Cropping Patterns ◽  
The Government ◽  
Optimal Cropping

Abstract In this study, the land and water resources allocation model was developed to determine optimal cropping patterns and water resources allocations at different rainfall probability exceedance levels (PEs) to ensure maximum agricultural return in the Hormat-Golina valley irrigation command area, Ethiopia. To account the uncertainty of rainfall variability, the monthly dependable rainfall was estimated at three levels of reliability (20, 50 and 80% PEs) which are representing wet, normal and dry seasons based on regional experience. The irrigation water demand which was used as an input to the optimization model was estimated at each level of reliability by using CROPWAT model. The net annual returns of optimal cropping patterns were estimated as 181, 179 and 175 million Ethiopia Birr at 20 %, 50 % and 80 % PEs, respectively. The result of the optimal cropping pattern indicates that, the net annual return of the command area was increased to 45.75%, 45.84% and 47.01% than the Government targeted at 20%, 50% and 80% PEs, respectively. The findings reveal that the optimal land and water resources allocation model is very useful to the planners and decision makers to maximize the agricultural return particularly in areas where land and water resources are limited.

scholarly journals Optimization of irrigation cropping pattern by using linear programming: Case study on irrigation area of Parsanga, Madura Island, Indonesia

2018 ◽  
Vol 39 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Pitojo T. Juwono ◽  
Lily Montarcih Limantara ◽  
Fathor Rosiadi
Keyword(s):  
Linear Programming ◽  
Water Discharge ◽  
Agricultural Product ◽  
Cropping Pattern ◽  
Optimization Analysis ◽  
Cropping Patterns ◽  
Irrigation Area ◽  
Maximum Benefit ◽  
Production Benefit

AbstractThe irrigation area of Parsanga is located in Sumenep Regency, Madura Island of Indonesia. This irrigation area is 500 ha and the existing cropping pattern is paddy–paddy–second crop. There is water discharge deficiency due to the existing cropping pattern mainly in the dry season. Thus, this study intends to optimize the cropping pattern for 3 condition so that it can produce the maximum benefit of agricultural product. The first cropping pattern is paddy/second crop–second crop–paddy/second crop; the second proposition is paddy/second crop –paddy/second crop–second crop; and the third proposition is paddy–second crop–paddy/second crop. The optimization analysis is carried out by using the linear programming. The suggested three cropping patterns are not only able to solve the water deficiency; they can also present the more production benefit than the existing condition.

scholarly journals Soil Water Release Curves : Indicator to Suit Sustainable Cropping Scheme under Sloppy Rain-Fed Climatic Conditions of Pothowar Plateau of Punjab-Pakistan

2018 ◽  
Vol 1 (1) ◽  
pp. 9-24
Author(s):  
Rehmat Ullah ◽  
Shehzada Munawar Mehdi ◽  
Khalid Saif Ullah Khan ◽  
Aftab Ahmed Sheikh ◽  
Sigit Mujiharjo ◽  
...  
Keyword(s):  
Soil Water ◽  
Water Availability ◽  
Management Practices ◽  
Climatic Conditions ◽  
Cropping Pattern ◽  
Plant Water ◽  
Water Release ◽  
Drought Period ◽  
Cropping Patterns ◽  
Release Curve

In arid environment, limitations of crop productivity could be improved by soil management practices like soil conservation measures, tillage and reducing slopes through terracing on different cropping patterns. These patterns include area as Wheat-Maize (WMCP) and Wheat-Fodder (WFCP) in Kahuta (high rainfall climatic area), Wheat-Millet-Fallow (WMFCP) and Wheat- Millet-Lentil (WMLCP) in Khairimurat (medium rainfall climatic area) and Wheat-Fallow (WFCP) and Fallow-Groundnut (FGCP) in Pindi Gheb (low rainfall climatic area). In areas that have more crop water requirements the yield of these crops has been affected when the drought prevails. Our results evidenced that more average soil water content (ASWC) was available in high to medium height terraces in WMCP and low to medium in WFCP of Kahuta area. ASWC remained more in high to medium height terraces under all cropping pattern of Khairimurat during September. ASWC remained more in low to medium height terraces under all cropping pattern of Pindi Gheb during September and December. Equidistantly, soil water release curve also indicated that medium rainfall sites had more plant water availability as compared to high and low rainfall sites. Yield relationship to plant water availability revealed significance for intrusion of modified cropping patterns rather than existing cropping patterns on sustained basis. Finally, our study suggests that cropping patterns of high and low rainfall areas should adjusted by growing low water requirement crops in summer seasons to cope the drought period for the sustainability of agriculture under rainfed climatic conditions. Keywords : cropping patterns, Pothowar Plateau, soil water contents, soil water release curve, sloppy lands

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