scholarly journals Comparison of Water Distribution Characteristics for Two Kinds of Sprinklers Used for Center Pivot Irrigation Systems

2017 ◽  
Vol 7 (4) ◽  
pp. 421 ◽  
Author(s):  
Jian Jiao ◽  
Yadong Wang ◽  
Liliang Han ◽  
Derong Su
Keyword(s):  
Water Distribution ◽  
Distribution Characteristics ◽  
Irrigation Systems ◽  
Center Pivot

scholarly journals A Comparative Study of Standard Center Pivot and Growers-Based Modified Center Pivot for Evaluating Uniformity Coefficient and Water Distribution

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1675
Author(s):  
Hussein Al-Ghobari ◽  
Ahmed Z. Dewidar
Keyword(s):  
Crop Production ◽  
Water Distribution ◽  
Climatic Factors ◽  
Irrigation System ◽  
Operating Conditions ◽  
Production Performance ◽  
Irrigation Systems ◽  
Water Losses ◽  
Study Results ◽  
Center Pivot

The center pivot irrigation system is a type of irrigation technology used to apply water effectively and uniformly over a wide variety of areas and topographies. These irrigation systems’ uniformity of water application greatly affects water use, energy consumption, and crop production. Performance tests of the standard lateral galvanized and modified polyethylene plastic pipes in the center pivot irrigation systems were conducted in different regions of Saudi Arabia. Water distribution depths along the laterals, coefficient of uniformity (CU), and distribution uniformity of the low quarter (DU) were determined. The results revealed that profiles of water distribution ranged from 4 to 14 mm for the standard-center pivot irrigation systems, while those for the modified-center pivot irrigation systems ranged from 6.5 to 50 mm. Standard-center pivot irrigation systems’ CU values ranged from 74 to 90%, with an average of 86%. In comparison, the modified-center pivot irrigation systems’ CU values ranged from 62 to 83%, with an average of 78%. The DU values ranged from 60 to 82% for the standard-center pivot irrigation systems, with an overall average of 77%. For the modified-center pivot irrigation systems, the DU values, in contrast, ranged from 31 to 75%, with an average of 65%. Thus, the accuracy and uniformity of the standard-center pivot irrigation systems are superior to those that have been modified. Additionally, a statistical model was developed to investigate the relationship between the water losses and the main climatic factors under field operating conditions. Therefore, the study results are expected to draw attention to standard lateral pipes’ value on the one hand and demonstrate the detrimental consequences of growers’ incorrect practices in pivot irrigation systems, motivating them to take strong action against these activities, on the other hand.

Instance segmentation of center pivot irrigation systems using multi-temporal SENTINEL-1 SAR images

2021 ◽  
pp. 100537
Author(s):  
Anesmar Olino de Albuquerque ◽  
Osmar Luiz Ferreira de Carvalho ◽  
Cristiano Rosa e Silva ◽  
Pablo Pozzobon de Bem ◽  
Roberto Arnaldo Trancoso Gomes ◽  
...  
Keyword(s):  
Sar Images ◽  
Irrigation Systems ◽  
Center Pivot ◽  
Multi Temporal ◽  
Instance Segmentation

Center Pivot Irrigation Systems

2016 ◽  
pp. 209-228 ◽  
Author(s):  
Peter Waller ◽  
Muluneh Yitayew
Keyword(s):  
Irrigation Systems ◽  
Center Pivot

Impacts of Center Pivot Irrigation Systems on Birds in Prairie Wetlands

1987 ◽  
Vol 51 (1) ◽  
pp. 238 ◽  
Author(s):  
Todd L. Peterson ◽  
James A. Cooper
Keyword(s):  
Prairie Wetlands ◽  
Irrigation Systems ◽  
Center Pivot

Environmental Benefits and Concerns of Center-Pivot Irrigation

2017 ◽  
Author(s):  
Leonor Rodriguez Sinobas
Keyword(s):  
20Th Century ◽  
The United States ◽  
Climatic Conditions ◽  
Environmental Benefits ◽  
Surface Irrigation ◽  
Irrigation Systems ◽  
Center Pivot ◽  
Key Issues ◽  
Precision Irrigation ◽  
Control Water

Center-pivot irrigation systems started in the United States in the mid-20th century as an irrigation method which surpassed the traditional surface irrigation methods. At that time, they had the potential to bring about higher irrigation efficiencies with less water consumption although their requirements in energy were higher too. Among their benefits, it is highlighted the feasibility to control water management as well as the application of agro-chemicals dissolved in the irrigation water and thus, center-pivot irrigation systems have spread worldwide. Nevertheless, since the last decade of the 20th century, they are facing actual concerns regarding ecosystem sustainability and water and energy efficiencies. Likewise, the 21st century has brought about the cutting edge issue “precision irrigation” which has made feasible the application of water, fertilizers, and chemicals as the plant demands taking into account variables such as: sprinkler´s pressure, terrain topography, soil variability, and climatic conditions. Likewise, it could be adopted to deal with the current key issues regarding the sustainability and efficiency of the center-pivot irrigation to maintain the agro-ecosystems but still, other issues such as the organic matter incorporation are far to be understood and they will need further studies.

scholarly journals Environmental and Economic Sustainability Assessment for Two Different Sprinkler and A Drip Irrigation Systems: A Case Study on Maize Cropping

Agriculture ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 187 ◽  
Author(s):  
Eros Borsato ◽  
Marco Martello ◽  
Francesco Marinello ◽  
Lucia Bortolini
Keyword(s):  
Growth Rate ◽  
Water Use Efficiency ◽  
Water Use ◽  
Drip Irrigation ◽  
Water Footprint ◽  
Irrigation Systems ◽  
Environmental Aspect ◽  
Irrigation Practice ◽  
Center Pivot ◽  
Use Efficiency

Water scarcity is worsened by climate change. Water savings can be reached by improving irrigation efficiency both on farm and on water supply. To do that, the choice of the best irrigation technology is not always straightforward, because farmers need to renew and implement farm infrastructures for irrigation. This study compares three irrigation systems, one drip irrigation and two sprinkler (center pivot and hose-reel) systems, on environmental, economic, and energetic performance under irrigated and non-irrigated maize cropping. The study combines impact and efficiency indicators, addressing a sustainability analysis for the irrigation practice under the three different irrigation systems. The sustainability for the irrigation systems was assessed using water-related indicators (water use efficiency, irrigation water use efficiency, and water footprint), biomass (crop growth rate, relative growth rate, harvest index, and yield response factor), and energy indicators (energy footprint, performance, and energy cost footprint) for the environmental aspect; and the economic-based indicators (water productivity and economic water footprint) for the economic aspect. Main results address the center pivot system as the best solution for irrigation practice since it demonstrated higher economic and environmental performance. Moreover, maize under the pivot system allowed a higher biomass production, economic benefits, and water use efficiency.

Water Distribution from Pressurized Subsurface Irrigation Systems

1966 ◽  
Vol 9 (6) ◽  
pp. 0837-0838
Author(s):  
L. F. Whitney ◽  
E. S. Pira ◽  
C. M. Vaziri ◽  
and L. F. Michelson
Keyword(s):  
Water Distribution ◽  
Irrigation Systems
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