Fuzzy Stress-based Modeling for Probabilistic Irrigation Planning Using Copula-NSPSO

2021 ◽  
Author(s):  
Chen Wang ◽  
Yizi Shang ◽  
Majid Khayatnezhad
Keyword(s):  
Irrigation Planning

scholarly journals Water saving strategies assessment on processing tomato cultivated in Mediterranean region

2016 ◽  
Vol 10 (1s) ◽  
pp. 69 ◽  
Author(s):  
Marcella M. Giuliani ◽  
Giuseppe Gatta ◽  
Eugenio Nardella ◽  
Emanuele Tarantino
Keyword(s):  
Deficit Irrigation ◽  
Mediterranean Region ◽  
Irrigation Management ◽  
Marketable Yield ◽  
Irrigation Planning ◽  
Water Regimes ◽  
Processing Tomato ◽  
Water Stress Tolerance ◽  
Irrigation Regimes ◽  
Irrigation Volume

Processing tomato grown in Mediterranean region required high irrigation volume throughout growing season. A two-year study was carried out in order to investigate the effects of deficit irrigation (DI) and regulated deficit irrigation (RDI) on processing tomato cultivated under sub-arid conditions. A comparison between the irrigation management linked to common practice adopted by farmer and the irrigation management based on crop evapotranspiration (ET<sub>c</sub>) demand was also done. The tomato cv. <em>Genius</em> F1 was cultivated under five water regimes: minimal irrigation (I<sub>0</sub>), as irrigation only at transplanting and during fertilising; DI, to restore 60% ET<sub>c</sub>; RDI, to restore 60%-80%- 60% ET<sub>c</sub> across the three main tomato phenological stages; full irrigation (FI), to restore 100% ET<sub>c</sub>; and farmer irrigation (FaI), as irrigation following the subjective farmer method. Compared to FI, under the FaI regime, the seasonal irrigation volume was 31% and 26% higher in the 2009 and 2010, respectively, with not significant yield increase between the two water regimes. Among the irrigation regimes, only the RDI showed similar yield values over the two years, although 2010 was climatically less favourable. For the water use efficiency related to the marketable yield (WUE<sub>y</sub>), among the irrigation regimes, RDI showed the higher value together with FI. Finally, the K<sub>y</sub> was 0.91, which indicates moderate water stress tolerance for processing tomato cultivated in Mediterranean regions. In conclusion, the data obtained in the present study demonstrate that in Southern Italy the irrigation planning followed by the farmer does not follow the principles of sustainable irrigation. Moreover, with the adoption of the RDI strategy, it is possible to save about 27% of water maintaining high WUE<sub>y</sub> value with an increase of fruit quality. The adoption of this regime could be suggested in processing tomato cultivated under Mediterranean climate saving water in both the vegetative and ripening periods.

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

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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