scholarly journals Cropping pattern and schedule using K-Factor for optimizing irrigation networks operation in Krueng Jreu Irrigation Area, Aceh, Indonesia

2021 ◽  
Vol 922 (1) ◽  
pp. 012025
Author(s):  
Syahrul ◽  
M Yasar ◽  
R Safira
Keyword(s):  
Irrigation Water ◽  
Command Area ◽  
Cropping Pattern ◽  
Cropping Patterns ◽  
Irrigation Area ◽  
Irrigation Networks ◽  
Group I ◽  
Secondary Canal ◽  
K Factor ◽  
Planting Season

Abstract Determining the cropping pattern and schedule according to the availability and requirement of irrigation water is important in an irrigation command area. Supplying irrigation water in the Krueng Jreu Irrigation Area is still less effective in the dry season, so it is necessary to review the existing cropping pattern and schedule in the irrigation area by considering the K factor. To achieve optimal irrigation networks operation, simulation of cropping patterns and schedules based on the K factor was conducted. Optimal cropping patterns and schedules were determined by the highest frequency of the half-month K factor greater than 0.75. The best cropping pattern and schedule for Krueng Jreu Irrigation Area was rice-rice-soybean cropping pattern with first planting season started in mid-July, second planting season in mid-November and third planting season in mid-March. The results achieved the best frequency of K factor > 0.75 as many as 15 times, K factor in the range of 0.50 - 0.75 as many as 3 times, and K factor < 0.25 as many as 4 times. The application of the selected cropping pattern and schedule was done by allocating water into three groups in case of the K factor < 0.75, namely Group I (Menara and Krueng Aceh Extension secondary canal), Group II (Krueng Jreu Kiri secondary canal) and Group III (Kayee, Lamkrah, and Inong secondary canal).

scholarly journals Analisis Kebutuhan Air Irigasi Menggunakan CROPWAT 8.0 pada Daerah Irigasi Krueng Jreu Kabupaten Aceh Besar

2020 ◽  
Vol 4 (4) ◽  
pp. 412-421
Author(s):  
Mahendra Rizqi ◽  
Muhammad Yasar Yasar ◽  
Dewi Sri Jayanti
Keyword(s):  
Irrigation Water ◽  
Food Production ◽  
Rice Paddy ◽  
Irrigation Water Requirement ◽  
Water Requirements ◽  
Cropping Patterns ◽  
Irrigation Area ◽  
Land Preparation ◽  
Increase Food Production ◽  
Manual Calculation

Abstrak. Salah satu usaha peningkatan produksi pangan khususnya padi adalah tersedianya air irigasi di areal sawah sesuai dengan kebutuhan. Kebutuhan air yang diperlukan  pada areal irigasi besarnya bervariasi sesuai keadaan untuk memenuhi kebutuhan evapotranspirasi, kehilangan air, kebutuhan air untuk tanaman dengan memperhatikan jumlah air yang diberikan oleh alam melalui hujan dan kontribusi air tanah. Pengaplikasian CROPWAT 8.0 ini sangat membantu dalam pengelolaan data sehingga menghasilkan data yang dapat digunakan. Tujuan penelitian ini adalah untuk menghitung kebutuhan air irigasi pada Daerah Irigasi Krueng Jreu dengan menggunakan software CROPWAT 8.0. Metode penelitian adalah menentukan parameter, pengumpulan data dan pengolahan data.  Data yang digunakan dalam penelitian ini adalah data luas areal yang dialiri, data-data untuk menghitung evapotranspirasi meliputi temperatur, kelembaban relatif, kecepatan angin, lama penyinaran matahari, curah hujan, pola dan jadwal tanam yang dianjurkan di daerah penelitian. Hasil penelitian yang telah dilakukan diperoleh  Nilai evapotranspirasi potensial (ET0)  rata-rata  di Daerah Irigasi Krueng Jreu adalah sebesar 3,75 mm/hari, curah hujan efektif (Re) rata-rata di Daerah Irigasi Krueng Jreu adalah sebesar 3,09 mm/hari, kebutuhan air untuk penyiapan lahan adalah sebesar 11,35 mm/hari untuk Bulan November dan sebesar 11,71 mm/hari untuk Bulan Mei, kebutuhan bersih air di sawah (NFR) untuk padi rendeng dan padi gadu yaitu sebesar  11,22 mm/hari dan 25,34 mm/hari, dan kebutuhan air pada pintu pengambilan (DR) untuk padi rendeng dan padi gadu yaitu sebesar 17,27 mm/hari dan 38,98 mm/hari. Kebutuhan air irigasi di Darah Irigasi Krueng Jreu dengan total luas area sebesar 3.287 ha dengan kebutuhan air irigasi pola tanam padi-padi yang dimulai awal pengolahan lahan pada awal Bulan November maka didapatkan kebutuhan air irigasi maksimal yaitu terjadi pada Bulan Juli dengan perhitungan CROPWAT yaitu sebesar 14,9 m3/detik dan untuk perhitungan manual yaitu sebesar 6,26 m3/detik. Kebutuhan air irigasi minimum yaitu terjadi pada Bulan Desember dengan perhitungan CROPWAT yaitu sebesar 0,00 m3/detik dan perhitungan manual yaitu sebesar 0,45 m3/detik.Analysis of Irrigation Water Requirement Using CROPWAT 8.0 in Krueng Jreu Irrigation Area  of Aceh Besar RegencyAbstract. One of the efforts to increase food production, especially rice, is the availability of irrigation water in paddy fields according to their needs. The required water needs in the area of irrigation varies according the State needs for evapotranspiration, water loss, water needs for plants with attention to the amount of water given by nature through the rain and the contribution of groundwater. The application of  Cropwat 8.0 is very helpful in managing data so as to produce data that can be used. The purpose of this study was to calculate irrigation water requirements in the Krueng Jreu Irrigation Area using Cropwat 8.0 software. The research method is determining parameters, data collection and data processing. The data used in this study is the data area that is flowed, the data for calculating evapotranspiration include: temperature, relative humidity, wind speed, duration of solar radiation, rainfall, patterns, and planting schedules recommended in the study area. Based on the results of the research that has been carried out, it can be concluded as follows: the average evapotranspiration value (ET0) in the Krueng Jreu Irrigation Area is 3,75 mm/day, the effective rainfall (Re) in the Krueng Jreu Irrigation Area is amounting to 3,09 mm/day, water requirements for land preparation of 11,35 mm/day in November and 11,71 mm/day in Mei, clean water requirements in rice fields (NFR) for rendeng rice and gadu rice which amounted to 11,22 mm/day and 25,34 mm/day, and water requirements on the retrieval gate (DR) for rendeng rice and gadu rice were equal to 17,27 mm/day and 38,98 mm/day. Irrigation water needs in Krueng Jreu Irrigation Blood with a total area of 3.287 ha with irrigation water requirements for rice-paddy cropping patterns that were started at the beginning of land processing at the beginning of November the maximum irrigation water needs were obtained in July with  Cropwat calculations that is equal to 14,9 m3/second and for manual calculations amounting to 6,26 m3/sec. For minimum irrigation water needs, that occurs in December with a Cropwat calculation is 0,00 m3/second and manual calculation of 0,45 m3/sec.

scholarly journals OPTIMIZATION ANALYSIS OF PLANT LANDSCAPES IN TANDAI IRRIGATION AREA, KERINCI DISTRICT, JAMBI

Neutron ◽  
2020 ◽  
Vol 20 (01) ◽  
pp. 63-71
Author(s):  
Acep Hidayat ◽  
Marcellino Rico Ariana
Keyword(s):  
Irrigation Water ◽  
Agricultural Land ◽  
Cropping System ◽  
Secondary Data ◽  
Cropping Pattern ◽  
Planting Pattern ◽  
Irrigation Network ◽  
Cropping Patterns ◽  
The Government ◽  
Large Water

The Plantation Network has a land area of ​​375 ha. Population which is directly proportional to the necessities of life, one of which is in the food sector, has made the government take the initiative to meet the needs and welfare of the community with productive agricultural land and fields. The data includes secondary data on 10-year rainfall from Depati Parbo and Kayu Aro Station and 10-year climatology from Kayu Aro Climatology Station. The calculation method used is the rainfall intensity Average method, Evapotranspiration modification Penman method, Debit danalan DR.FJ Mock method, cropping patterns, and irrigation water needs. Related to the calculation of 6 alternative cropping patterns with different types of plants and different initial planting plans by making comparisons with the existing discharge factor (Q80). Obtained that the cropping pattern is very possible, namely using the cropping pattern PADI-PADI-PALAWIJA. The most efficient and optimal planting pattern is that this cropping system consists of PADI-PADI-ON with large water demand in tertiary plots (NFR tertiary plots) producing 0 - 1,308 ltr / sec/ha with a maximum of 1,308 ltr / ha / February II, while the need for irrigation water in the intake (DR intake) ranges from 0 - 1,615 ltr sec/ha with a maximum of 1,615 ltr / sec/ha in February II. The available debit and debit in the Irrigation Network Planning Mark is very abundant with the mainstay discharge (Q80) for irrigation, the maximum available debit (Q80) can occur in November with 202,207 ltr / sec/ha and the minimum in August with 115,012 ltr / sec / Ha. Based on the results of the discharge and water above, it can be determined about the ratio of water/air equilibrium between discharge and water Q80 and the need for irrigation water requires a large/adequate surplus.

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 Studi Optimasi Pola Tanam Daerah Irigasi Gong Gang Kecamatan Parang Kabupaten Magetan

2016 ◽  
Vol 14 (1) ◽  
pp. 51
Author(s):  
Ernawan Setyono ◽  
Safik Mucharom
Keyword(s):  
Linear Programming ◽  
Spatial Patterns ◽  
Food Production ◽  
Cropping Pattern ◽  
Water Requirements ◽  
Cropping Intensity ◽  
Cropping Patterns ◽  
Optimization Study ◽  
Planting Season

Along with the increasing population growth, the need for food also increased. To meet that need for optimization studies of the factors that influence spatial patterns of planting in order to increase the volume of food production. Determination of the cropping pattern that will be used after the first known dependable flow and water requirements. Through the design cropping pattern is expected cropping intensity can be enhanced and existing water sources can be used optimally. linear programming used in this optimization study using QM for Windows 4 software. The most optimal results from the optimization that has been done is an alternative was began on November  cropping patterns : rice-palawija-sugarcane season crops beginning 1st week of November, profits amounted to Rp 106.729.700.000 to the area that can be cultivated for the planting season I: Rice = 1990 ha, palawija = 307 ha sugarcane = 89 ha, planting season II: Rice = 1990 ha, palawija = 307 ha sugarcane = 89 ha, and planting season III:  Rice = 258,2753 ha Palawija = 2038,725 ha, sugarcane = 89 ha

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 KAJIAN OPTIMASI PEMANFAATAN EMBUNG PAYA SEPAT UNTUK MEMENUHI KEBUTUHAN AIR IRIGASI D.I. CUBO TRIENGGADENG ZONA III KABUPATEN PIDIE JAYA

2020 ◽  
Vol 3 (1) ◽  
pp. 387-394
Author(s):  
Ivan Mirza ◽  
Ella Meilianda ◽  
Azmeri Azmeri
Keyword(s):  
Irrigation Water ◽  
Water Demand ◽  
Rainwater Harvesting ◽  
Optimization Technique ◽  
Water Shortages ◽  
Water Requirements ◽  
Irrigation Network ◽  
Irrigation Area ◽  
Irrigation Water Demand ◽  
Planting Season

The Cubo Trienggadeng Irrigation scheme has a potential area of 1,545 Ha while the functional area is 1,090 Ha. Based on the Irrigation Network scheme, Cubo Trienggadeng Irrigation Area consists of 3 (three) zones: Zone I, Zone II and Zone III. In Zone III of the Cubo Trienggadeng Irrigation Area which is the latest area receiving water from the Cubo Trienggadeng Weir often occurs in water shortages especially during the Gadu planting season (second planting season). Embung Paya Sepat is the reservoar found in Zone III D.I. Cubo Trienggadeng that is not being fully optimized in use. This study aims to optimize the utilization of Paya Sepat Reservoar so that it can meet irrigation water demand in Zone III D.I Cubo Trienggadeng by using the Water Balance method. This reservoar does not have a channel that supplies inflow discharge, so rainwater harvesting becomes a parameter in analyzing the supply of water to the reservoar. The optimization technique used uses a non-linear program using the Solver facility in Microsoft Excel software. Based on the results of the calculation of irrigation water requirements for an area of 204.50 Ha in the Gadu planting season, the maximum volume of irrigation water demand is 40,461,55 m3 at first periode in June, from the results of the optimization using the Maximize Release method, the results show that the water reservoar in Paya Sepat Reservoar can meet the water requirements in the Gadu planting season with an average reliability of 100%.. Therefore it is necessary to regulate the release of irrigation water that is well regulated and coordinated between the reservoar management and water users/farmers.

scholarly journals MODEL KAPASITAS BIROKRASI UNTUK PENGEMBANGAN INTEGRITAS PERKUMPULAN PETANI PEMAKAI AIR (P3A) DALAM RANGKA PENCAPAIAN KEDAULATAN DAN KEAMANAN PANGAN LOKAL

2016 ◽  
Author(s):  
Isharyanto , ◽  
Suranto , ◽  
Jatmiko Anom Husodo , ◽  
Adriana G. Firdaussy , ◽  
Andina Elok Puri Maharani ,
Keyword(s):  
Local Government ◽  
Irrigation Water ◽  
Irrigation Management ◽  
Irrigation Network ◽  
Irrigation Area ◽  
Limited Ability ◽  
Farming Community ◽  
Operation And Maintenance ◽  
Irrigation Networks ◽  
Government Bureaucracy

<p>Abstract<br />Perkumpulan Petani Pengguna Air (P3A) coordinate with the users of irrigation water for other purposes through irrigation area coordination forum. Institutional financing irrigation management by irrigation farmers secaa a whole is still very limited ability to provision of funds operation and maintenance of irrigation networks when compared with the needs of maintenance of irrigation networks managed. The results showed that this indicator is quite good, although not all of them are active in every activity P3A. Some farmers feel that once a member but do not know the activities that will be implemented so that the benefits are still lacking at the farm level.Considering the amount of irrigation service charges under the authority of the local government, in this case the local government bureaucracy, we need a model of partnership with farmers. The main elements are dominant in this model is the behavior of (i) the farming community, (ii) participation of irrigation management, (iii) the physical condition of the irrigation network, (iv) of irrigation water services, and (vi) the management of irrigation networks.<br /><em>Keywords: farmer, water, irrigation, food.</em></p><p>Abstrak<br />Perkumpulan Petani Pemakai Air (P3A) melakukan koordinasi dengan para pengguna air irigasi untuk keperluan lainnya melalui forum koordinasi daerah irigasi. Pembiayaan pengelolaan irigasi oleh kelembagaan petani irigasi secaa keseluruhan masih sangat terbatas kemampuan penyediaan dana operasi dan pemeliharaan jaringan irigasi bila dibandingkan dengan kebutuhan pemeliharaan jaringan irigasi yang dikelola. Hasil penelitian menunjukkan bahwa indikator ini cukup baik walaupun belum semuanya aktif dalam setiap kegiatan P3A. Sebagian petani merasa bahwa pernah menjadi anggota tetapi tidak tahu kegiatan yang akan dilaksanakan sehingga manfaatnya masih kurang di tingkat<br />petani. Dengan memperhatikan besaran tuntutan pelayanan irigasi yang menjadi wewenang pemerintah daerah, dalam hal ini birokrasi pemerintahan daerah, maka diperlukan model kemitraan dengan petani. Unsur-unsur utama yang dominan dalam model ini adalah perilaku (i) masyarakat petani, (ii) partisipasi pengelolaan irigasi, (iii) kondisi fisik jaringan irigasi, (iv) pelayanan air irigasi, dan (vi) pengelolaan jaringan irigasi.<br /><em>Kata Kunci: petani, air, irigasi, pangan.</em></p>

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.

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