Transplanting date adjustment in Boro rice cultivation as a strategy to reduce groundwater withdrawal in Bangladesh

Due to intensive irrigated rice cultivation during dry season, declining trend of groundwater level is observed in many parts of Bangladesh. Field experiments were conducted in 2015 and 2016 at four experimental stations of Bangladesh Institute of Nuclear Agriculture, Bangladesh to evaluate the performance of some Boro rice cultivars in different planting dates with respect to yield and irrigation water requirement, and to optimize between yield and irrigation water requirement, with a view to reduce groundwater withdrawal and hence reducing mining of groundwater. The transplanting dates were 21th January (T1), 15th February (T2), 7th March and 30th March. Four rice cultivars were used. The results showed that the rice growth period was shortened with the later dates of transplanting. Generally, the yield of all cultivars at first and second transplanting (i.e. in T1 & T2) are good, and decrease at the later transplanting dates (T3, T4) and hence could not be recommended among farmers. When we consider the irrigation savings in T2 compare to T1, the irrigation savings varies with location and year, but the general tendency is that the second transplanting can save irrigation water. By considering economic (intrusion of additional rabi crop between two rice crops) and ecological factor (irrigation reduction, and hence reducing groundwater withdrawal), we recommend that the most suitable transplanting time for Boro rice should be 15th February. As such, we can effectively achieve good yield, reduce irrigation requirement, and creating opportunity for possible intrusion of addition Rabi crop between two rice crops. Overall, the findings of the present study can provide effective transplanting time and cultivar to reduce groundwater withdrawal in the present agro-ecosystem of northwestern Bangladesh and other similar areas.Keywords: Boro rice, irrigation requirement, transplanting date, groundwater withdrawal, ecosystem

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Transplanting date adjustment in Boro rice cultivation as a strategy to reduce groundwater withdrawal in Bangladesh

Malaysian Journal of Halal Research Journal ◽

10.2478/mjhr-2019-0006 ◽

2019 ◽

Vol 2 (2) ◽

pp. 1-8

Author(s):

Md. Hossain Ali

Keyword(s):

Irrigation Water ◽

Field Experiments ◽

Growth Period ◽

Water Requirement ◽

Rice Cultivation ◽

Groundwater Withdrawal ◽

General Tendency ◽

Rice Cultivars ◽

Irrigation Water Requirement ◽

Boro Rice

AbstractDue to intensive irrigated rice cultivation during dry season, declining trend of groundwater level is observed in many parts of Bangladesh. Field experiments were conducted in 2015 and 2016 at four experimental stations of Bangladesh Institute of Nuclear Agriculture, Bangladesh to evaluate the performance of some Boro rice cultivars in different planting dates with respect to yield and irrigation water requirement, and to optimize between yield and irrigation water requirement, with a view to reduce groundwater withdrawal and hence reducing mining of groundwater. The transplanting dates were 21th January (T1), 15th February (T2), 7th March and 30th March. Four rice cultivars were used. The results showed that the rice growth period was shortened with the later dates of transplanting. Generally, the yield of all cultivars at first and second transplanting (i.e. in T1 & T2) are good, and decrease at the later transplanting dates (T3, T4) and hence could not be recommended among farmers. When we consider the irrigation savings in T2 compare to T1, the irrigation savings varies with location and year, but the general tendency is that the second transplanting can save irrigation water. By considering economic (intrusion of additional rabi crop between two rice crops) and ecological factor (irrigation reduction, and hence reducing groundwater withdrawal), we recommend that the most suitable transplanting time for Boro rice should be 15th February. As such, we can effectively achieve good yield, reduce irrigation requirement, and creating opportunity for possible intrusion of addition Rabi crop between two rice crops. Overall, the findings of the present study can provide effective transplanting time and cultivar to reduce groundwater withdrawal in the present agro-ecosystem of northwestern Bangladesh and other similar areas.

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Efisiensi Pemberian Air Pada Jaringan Irigasi Way Bini Kecamatan Waeapo Kabupaten Buru Provinsi Maluku

Agrologia ◽

10.30598/a.v5i2.186 ◽

2018 ◽

Vol 5 (2) ◽

Author(s):

Said Ar Assagaf ◽

Charles Silahooy ◽

Pieter J Kunu ◽

Silwanus Talakua ◽

Rudi Soplanit

Keyword(s):

Water Availability ◽

Irrigation Water ◽

Distribution System ◽

Water Distribution ◽

Water Distribution System ◽

Irrigation System ◽

Water Requirement ◽

Rice Cultivation ◽

Survey Method ◽

Irrigation Water Requirement

Dams irrigation system is important facility to ensure the water availability during rice cultivation. The aim of this study was to verify the condition of Way Bini irrigation system in providing irrigation water and water distribution system to meet the needs of rice cultivation in Savana Jaya Village, Waeapo Subdistrict, Buru District. The research used survey method. The results showed that the irrigation water debit required for appropriate rice cultivtion was 677.16 L/sec (0.68 m3/sec) which was smaller than that of the Way Bini dam; 750 L / s (0.75 m3 / s), while the efficiency of the irrigation water requirement was 70% which was categorized as good to excellent.

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ANALISIS KEBUTUHAN AIR IRIGASI MENGGUNAKAN METODE CROPWAT VERSION 8.0

Inersia, Jurnal Teknik Sipil ◽

10.33369/ijts.10.2.61-68 ◽

2019 ◽

Vol 10 (2) ◽

pp. 61-68

Author(s):

Hanan Shalsabillah ◽

Khairul Amri ◽

Gusta Gunawan

Keyword(s):

Irrigation Water ◽

Water Requirement ◽

Effective Rainfall ◽

Climate Data ◽

Irrigation Water Requirement ◽

Irrigation Requirement ◽

Water Requirements ◽

Value Prediction ◽

Irrigation Area ◽

Reference Plant

The Irrigation Area of Air Nipis is located in Regency of South Bengkulu at Bengkulu Province with irrigation area 3.116 Ha. Planning and management of irrigation systems is one of the important steps to determine the irrigation water requirement as a whole. The purpose of this research is aim to analyze the water requirement to get value prediction of minimum and maximum irrigation water requirement in irrigation area of Air Nipis using the CROPWAT Version 8.0 method. Irrigation water requirements obtained from CROPWAT Version 8.0 are based on climate data, soil data and plants.The parameters that were reference plant evapotranspiration, effective rainfall, soil treatment, soil data, and plants. The results of the research showed that the maximum irrigation requirement for calculation using CROPWAT 8.0 software occurred in the first 10 days of December (14,49 m3/sec), while the minimum irrigation water requirements for CROPWAT 8.0 occurs in mid to end March (0,04 m3/sec).

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Simulating the effects of climatic fluctuations on rice irrigation water requirement using AquaCrop

Agricultural Water Management ◽

10.1016/j.agwat.2018.10.003 ◽

2019 ◽

Vol 213 ◽

pp. 97-106 ◽

Cited By ~ 5

Author(s):

Nader Pirmoradian ◽

Naser Davatgar

Keyword(s):

Irrigation Water ◽

Water Requirement ◽

Irrigation Water Requirement ◽

Climatic Fluctuations ◽

Rice Irrigation

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Assessment of Water Pumping System Powered By Solar Pump in Dry Areas

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.d6950.118419 ◽

2019 ◽

Vol 8 (4) ◽

pp. 2859-2866

Keyword(s):

Irrigation Water ◽

Water Requirement ◽

Accurate Estimation ◽

Irrigation Water Requirement ◽

Irrigation Planning ◽

Power Requirement ◽

Promising Alternative ◽

Point Tracking ◽

Water Pumping ◽

Dry Areas

The rapid increase of desertification’s degradation is one of the worst environmental and economic threats for dry areas. Climate changes, very year impacts thousands of areas across the globe. The high cost of electricity and diesel-based fuel affects photovoltaic water pumping requirements for irrigation in many parts of the world. Solar irradiance in every dry place is extremely high due the drought increase. Thus, using solar energy for water pumping is a promising alternative sources of energy. Undertaking irrigation for a particular place and crop requires not only skills in the irrigation planning but also in the power requirement of the entire system. A reliable and accurate estimation of ET rate and irrigation water requirement (IWR) are soundly important in irrigation field. This sought to accurately estimate the irrigation power requirement by using PVsyst software on nine different pumps technologies combinations with different type of converters at 100m, 150m, 180m, and 200m of Total dynamic Head (TDH). The study has been conducted in four sections, the first section dealt with the assessment of the collected data, the second section with the simulations, the third one with the irrigation water requirement and finally irrigation water requirement. The results found in study show that IPR of a crop is majorly depend on the TDH. Among the nine combinations, results show that the Maximum Power Point Tracking (MPPT) technology is the best in terms of power requirement of selected the crop. Furthermore, the maximum and minimum values of the irrigation water requirement for millet crop was found to be 12.9 mm/day and 4.9mm/day respectively.

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