Crop Evapotranspiration, Irrigation Water Requirement and Water Productivity of Maize from Meteorological Data under Semiarid Climate

In this paper, Rice water requirement and irrigation water requirement in Amol agro meteorological Station in 2016-2045 are forecasted based on the projected meteorological data of Hadcm3 under A2 scenario. Rice water requirements are estimated by using crop coefficient approach. Reference evapotranspiration are calculated by FAO Penman-Monteith method. Moreover, the irrigation water requirements are simulated by calibrated CROPWAT model using the meteorological parameters. The results show that both crop water requirement and irrigation water requirement present downward trend in the future. In 2016-2045, the rice water requirement and irrigation water requirement decrease by more than 9.9% under A2 scenario, respectively. Furthermore, the precipitation rise may be the main reason for the decrease in crop water requirement, while significant decrease of irrigation water requirement should be attributed to combined action of rising precipitation and a slight increase in temperature.

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Impact of Meteorological factors on wheat growth period and irrigation water requirement —A case study of the Beijing-Tianjin-Hebei region in China

10.1101/2021.01.04.425202 ◽

2021 ◽

Author(s):

Chengcheng Xu ◽

Chuiyu Lu ◽

Jianhua Wang

Keyword(s):

Wind Speed ◽

Relative Humidity ◽

Irrigation Water ◽

Meteorological Factors ◽

Potential Evapotranspiration ◽

Meteorological Data ◽

Growth Period ◽

Water Requirement ◽

Eastern Region ◽

Irrigation Water Requirement

AbstractThis study analyzes the irrigation water requirement of wheat in the growth stage in the Beijing-Tianjin-Hebei region under the changes of meteorological factors conditions, using the growth period data, and meteorological data from 80 meteorological stations, from 2000 to 2019. The results show that: (1) The annual average precipitation, average wind speed, and average relative humidity of the growth period in the Beijing-Tianjin-Hebei region show a downward variation trend, while the temperature variation shows an upward trend. Moreover, relative humidity and radiation exhibit a negative spatial correlation. (2) Wheat irrigation water requirement in the Beijing-Tianjin-Hebei region gradually decreases from north to south and east to west. However, the eastern region shows a gradually increasing trend, while the western region shows a decreasing trend. (3) Meteorological factors are negatively correlated with irrigation water requirement, potential evapotranspiration, effective precipitation, and relative humidity, and significantly positively correlated with sunshine hours, average temperature, and wind speed. The overall variation in irrigation water requirement has the highest correlation with potential evapotranspiration. However, the yearly variations in regional irrigation water requirement are dependent on factors such as wind speed, relative humidity, and radiation.

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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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Climate change impacts on irrigation water requirement, crop water productivity and rice yield in the Songkhram River Basin, Thailand

Journal of Cleaner Production ◽

10.1016/j.jclepro.2018.07.146 ◽

2018 ◽

Vol 198 ◽

pp. 1157-1164 ◽

Cited By ~ 25

Author(s):

Siriwat Boonwichai ◽

Sangam Shrestha ◽

Mukand S. Babel ◽

Sutat Weesakul ◽

Avishek Datta

Keyword(s):

Climate Change ◽

River Basin ◽

Irrigation Water ◽

Rice Yield ◽

Water Productivity ◽

Climate Change Impacts ◽

Crop Water ◽

Irrigation Water Requirement ◽

Crop Water Productivity ◽

Songkhram River

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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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