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Journal articles on the topic 'Variable rate irrigation technology'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Takács, Sándor, Tibor Bíró, Lajos Helyes, and Zoltán Pék. "Variable Rate Precision Irrigation Technology for Deficit Irrigation of Processing Tomato." Irrigation and Drainage 68, no. 2 (2018): 234–44. http://dx.doi.org/10.1002/ird.2299.

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2

O’Shaughnessy, Susan A., Steven R. Evett, Paul D. Colaizzi, et al. "Identifying Advantages and Disadvantages of Variable Rate Irrigation: An Updated Review." Applied Engineering in Agriculture 35, no. 6 (2019): 837–52. http://dx.doi.org/10.13031/aea.13128.

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Abstract. Variable rate irrigation (VRI) sprinklers on mechanical move irrigation systems (center pivot or lateral move) have been commercially available since 2004. Although the number of VRI, zone or individual sprinkler, systems adopted to date is lower than expected there is a continued interest to harness this technology, especially when climate variability, regulatory nutrient management, water conservation policies, and declining water for agriculture compound the challenges involved for irrigated crop production. This article reviews the potential advantages and potential disadvantages

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Stone, Kenneth C., Phil J. Bauer, Susan O’Shaughnessy, Alejandro Andrade-Rodriguez, and Steven Evett. "A Variable-Rate Irrigation Decision Support System for Corn in the U.S. Eastern Coastal Plain." Transactions of the ASABE 63, no. 5 (2020): 1295–303. http://dx.doi.org/10.13031/trans.13965.

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HighlightsA decision support system using the USDA-ARS Irrigation Scheduling and Supervisory Control and Data Acquisition (ISSCADA) system was evaluated for spatially managing corn irrigation in the U.S. Eastern Coastal Plain.The ISSCADA system was compared to traditional scheduling methods based on measured soil water potentials.The ISSCADA system with feedback on allowable soil water depletion shows potential as a tool for growers for managing variable-rate irrigation systems.Abstract. Variable-rate irrigation (VRI) systems are capable of applying different water depths both in the direction

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4

Lamm, Freddie R., Dana O. Porter, James P. Bordovsky, et al. "Targeted, Precision Irrigation for Moving Platforms: Selected Papers from a Center Pivot Technology Transfer Effort." Transactions of the ASABE 62, no. 5 (2019): 1409–15. http://dx.doi.org/10.13031/trans.13371.

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Abstract. This article is an introduction to an ASABE Special Collection of ten articles concerning center pivot (CP) technology transfer that appears in this issue of and in . The year 2018 marked the 40th anniversary of research and development of low-energy precision application (LEPA) for use with CP sprinkler irrigation systems. Since 1978, researchers, extension specialists, and industry have continued development of multiple technologies that are suitable for mobile lateral irrigation platforms. A two-year technology transfer effort with funding from the USDA-ARS Ogallala Aquifer Progra

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Sui, Ruixiu, Susan A. O’Shaughnessy, Steven R. Evett, Alejandro Andrade-Rodriguez, and Jonnie Baggard. "Evaluation of a Decision Support System for Variable-Rate Irrigation in a Humid Region." Transactions of the ASABE 63, no. 5 (2020): 1207–15. http://dx.doi.org/10.13031/trans.13904.

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HighlightsAn Irrigation Scheduling Supervisory Control and Data Acquisition (ISSCADA) system was tested against a soil electrical conductivity (EC) based method for variable-rate irrigation (VRI).Soil EC was used to create irrigation prescription in EC-based VRI.ISSCADA generated VRI prescriptions using canopy temperature, soil water content, and weather data.ISSCADA-based VRI reduced irrigation water use and increased irrigation water productivity.Abstract. Use of variable-rate irrigation (VRI) technology has the potential to improve irrigation water use efficiency (IWUE). VRI hardware is com

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Bantchina, Bere Benjamin, Kemal Sulhi Gündoğdu, Selçuk Arslan, et al. "Spatiotemporal Modeling of Soil Water Dynamics for Site-Specific Variable Rate Irrigation in Maize." Soil Systems 8, no. 1 (2024): 19. http://dx.doi.org/10.3390/soilsystems8010019.

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This study aimed to simulate dynamic irrigation management zones (MZs) in two maize fields for a variable rate hose reel fertigation machine (VRFM) with a four-section boom control. Soil moisture content was measured from nine and four soil moisture sensors in Field 1 (8.2 ha) and Field 2 (2.5 ha), respectively, on different dates during the 2022 crop season. Three and five MZs scenarios were simulated per irrigation and the theoretical maps were processed for implementation. The application maps fitted to the VRFM showed significant spatiotemporal variations in irrigation requirements. For in

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Turbak, Abdulaziz S., and Hubert J. Morel‐Seytoux. "Analytical Solutions for Surface Irrigation. II: Variable Infiltration Rate." Journal of Irrigation and Drainage Engineering 114, no. 1 (1988): 48–60. http://dx.doi.org/10.1061/(asce)0733-9437(1988)114:1(48).

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8

Hui, Xin, Xueji Lin, Yue Zhao, et al. "Assessing water distribution characteristics of a variable-rate irrigation system." Agricultural Water Management 260 (February 2022): 107276. http://dx.doi.org/10.1016/j.agwat.2021.107276.

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9

Nguyen, Anh T., Allen L. Thompson, Kenneth A. Sudduth, and Earl D. Vories. "Automatic Management Zone Delineation For Center Pivot Variable Rate Irrigation Using Field Data." Journal of the ASABE 66, no. 6 (2023): 1527–45. http://dx.doi.org/10.13031/ja.15528.

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Highlights A computer model (MOPivot) was developed to determine unique management areas. MOPivot can delineate management zone maps for center pivot (CP) variable rate irrigation (VRI) systems. The CP system achieved high application uniformity over a range of VRI application depths. MOPivot management zone maps were evaluated using soil survey geographic database (SSURGO) and soil apparent electrical conductivity (ECa) data. Abstract. Concerns over water availability and water quality increasingly require more efficient use of water resources in irrigated agriculture. Center pivot (CP) syste

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10

Canavari, Maurizio, Marco Medici, Rungsaran Wongprawmas, Vilma Xhakollari, and Silvia Russo. "A Path Model of the Intention to Adopt Variable Rate Irrigation in Northeast Italy." Sustainability 13, no. 4 (2021): 1879. http://dx.doi.org/10.3390/su13041879.

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Irrigated agriculture determines large blue water withdrawals, and it is considered a key intervention area to reach sustainable development objectives. Precision agriculture technologies have the potential to mitigate water resource depletion that often characterises conventional agricultural approaches. This study investigates the factors influencing farmers’ intentions to adopt variable rate irrigation (VRI) technology. The Technology Acceptance Model 3 (TAM-3) was employed as a theoretical framework to design a survey to identify the factors influencing farmers’ decision-making process whe

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Han, Young J., Ahmad Khalilian, Jose Payero, and Nicholas Rogers. "Development of a Portable Electro-Mechanical Educational Model for Variable Rate Center Pivot Irrigation Technology." Journal of Water Resource and Protection 08, no. 04 (2016): 449–58. http://dx.doi.org/10.4236/jwarp.2016.84038.

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Barker, J. Burdette, Derek M. Heeren, Christopher M. U. Neale, and Daran R. Rudnick. "Evaluation of variable rate irrigation using a remote-sensing-based model." Agricultural Water Management 203 (April 2018): 63–74. http://dx.doi.org/10.1016/j.agwat.2018.02.022.

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13

Ortuani, Facchi, Mayer, Bianchi, Bianchi, and Brancadoro. "Assessing the Effectiveness of Variable-Rate Drip Irrigation on Water Use Efficiency in a Vineyard in Northern Italy." Water 11, no. 10 (2019): 1964. http://dx.doi.org/10.3390/w11101964.

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Although many studies in the literature illustrate the numerous devices and methodologies nowadays existing for assessing the spatial variability within agricultural fields, and indicate the potential for variable-rate irrigation (VRI) in vineyards, only very few works deal with the implementation of VRI systems to manage such heterogeneity, and these studies are usually conducted in experimental fields for research aims. In this study, a VR drip irrigation system was designed for a 1-ha productive vineyard in Northern Italy and managed during the agricultural season 2018, to demonstrate feasi

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14

Ajili, Abdolazim. "Estimating the Model of Investigating Attitude and Intention in the Usage of Variable Rate Irrigation Technology." American Journal of Experimental Agriculture 2, no. 3 (2012): 542–56. http://dx.doi.org/10.9734/ajea/2012/1267.

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15

Szabó, Andrea, Csaba Juhász, Bernadett Gálya Farkasné, Ádám Kövesdi, János Tamás, and Attila Nagy. "Combined traffic control of irrigation on heterogeneous field." Acta Agraria Debreceniensis, no. 1 (May 26, 2022): 187–90. http://dx.doi.org/10.34101/actaagrar/1/10369.

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In arid areas, such as Hungary, most climate models forecast a rise in water scarcity. Irrigated land accounts for 2% of agricultural land in Hungary, with most irrigation technology being relatively outdated. The aim of this research was to lay the foundation for a combined traffic management system for a water-saving precision irrigation system on an 85-ha field in the Tisza River basin's reference region. High-precision soil maps were created to support the water-efficient variable-rate irrigation system by selecting and selecting areas for different agrotechnical implementations and precis

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Chen, L. J., C. S. Li, Q. Feng, et al. "An integrative influence of saline water irrigation and fertilization on the structure of soil bacterial communities." Journal of Agricultural Science 157, no. 9-10 (2019): 693–700. http://dx.doi.org/10.1017/s002185962000012x.

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AbstractAlthough numerous studies have investigated the individual effects of salinity, irrigation and fertilization on soil microbial communities, relatively less attention has been paid to their combined influences, especially using molecular techniques. Based on the field of orthogonal designed test and deoxyribonucleic acid sequencing technology, the effects of saline water irrigation amount, salinity level of irrigation water and nitrogen (N) fertilizer rate on soil bacterial community structure were investigated. The results showed that the irrigation amount was the most dominant factor

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17

Irmak, Suat, Vasudha Sharma, Amir Haghverdi, Amit Jhala, José O. Payero, and Matthew Drudik. "Maize Crop Coefficients under Variable and Fixed (Uniform) Rate Irrigation and Conventional and Variable Rate Fertilizer Management in Three Soil Types." Agricultural Water Management 243 (January 2021): 106489. http://dx.doi.org/10.1016/j.agwat.2020.106489.

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18

Chávez, José L., Francis J. Pierce, and Robert G. Evans. "Compensating inherent linear move water application errors using a variable rate irrigation system." Irrigation Science 28, no. 3 (2009): 203–10. http://dx.doi.org/10.1007/s00271-009-0188-6.

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19

Al-Kufaishi, S. A., B. S. Blackmore, and H. Sourell. "The feasibility of using variable rate water application under a central pivot irrigation system." Irrigation and Drainage Systems 20, no. 2-3 (2006): 317–27. http://dx.doi.org/10.1007/s10795-006-9010-2.

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20

Davenport, Joan R. "645 Using Site-specific Approaches to Advance Potato Management in Irrigated Systems." HortScience 34, no. 3 (1999): 559A—559. http://dx.doi.org/10.21273/hortsci.34.3.559a.

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Potato (Solanum tuberosum L.) is grown extensively throughout the Pacific Northwest as a high-value crop in irrigated rotations with other row crops such as wheat (Triticum aestivum L.) and corn (Zea mays L.)—both field and sweet. Center pivots are predominant irrigation systems. Soil texture ranges from coarse sands to finer textured silt loams and silts and can vary within one field, often with very hilly topography. Site-specific management is being evaluated as an approach to help to optimize inputs (water, seed, agricultural chemicals) to maintain or enhance yield and reduce the potential

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Davenport, Joan R., and Mary J. Hattendorf. "Using Site-specific Approaches to Advance Potato Management in Irrigated Systems." HortTechnology 10, no. 3 (2000): 452–57. http://dx.doi.org/10.21273/horttech.10.3.452.

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Potatoes (Solanum tuberosum L.) are grown extensively throughout the Pacific northwestern United States as a high value crop in irrigated rotations with other row crops such as wheat (Triticum aestivum L.) and both field and sweet corn (Zea mays L.). Center pivots are the predominant irrigation systems. Soil texture ranges from coarse sands to finer textured silt loams and silts and can vary within one field, particularly in fields with hilly topography. Site specific management is being evaluated as an approach to help to optimize inputs (water, seed, agricultural chemicals) to maintain or en

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22

Sharma, Vasudha, and Suat Irmak. "Economic comparisons of variable rate irrigation and fertigation with fixed (uniform) rate irrigation and fertigation and pre-plant fertilizer management for maize in three soils." Agricultural Water Management 240 (October 2020): 106307. http://dx.doi.org/10.1016/j.agwat.2020.106307.

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23

Thorp, Kelly R., Sebastian Calleja, Duke Pauli, Alison L. Thompson, and Diaa Eldin Elshikha. "Agronomic Outcomes of Precision Irrigation Management Technologies with Varying Complexity." Journal of the ASABE 65, no. 1 (2022): 135–50. http://dx.doi.org/10.13031/ja.14950.

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HighlightsCotton yield and water productivity were measured for different precision irrigation management solutions.Agronomic improvements from site-specific irrigation based on spatial FAO-56 crop coefficient data were minor.Thermal remote sensing data from unoccupied aircraft systems were able to identify crop water limitations.Integrated sensing and modeling tools that can achieve intended agronomic outcomes should be prioritized.Abstract. Diverse technologies, methodologies, and data sources have been proposed to inform precision irrigation management decisions, and the technological compl

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24

Bohman, Brian J., Carl J. Rosen, and David J. Mulla. "Impact of variable rate nitrogen and reduced irrigation management on nitrate leaching for potato." Journal of Environmental Quality 49, no. 2 (2020): 281–91. http://dx.doi.org/10.1002/jeq2.20028.

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25

Ahmed, Zeeshan, Dongwei Gui, Ghulam Murtaza, Liu Yunfei, and Sikandar Ali. "An Overview of Smart Irrigation Management for Improving Water Productivity under Climate Change in Drylands." Agronomy 13, no. 8 (2023): 2113. http://dx.doi.org/10.3390/agronomy13082113.

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Global drylands, covering about 41% of Earth’s surface and inhabited by 38% of the world’s population, are facing the stark challenges of water scarcity, low water productivity, and food insecurity. This paper highlights the major constraints to agricultural productivity, traditional irrigation scheduling methods, and associated challenges, efforts, and progress to enhance water use efficiency (WUE), conserve water, and guarantee food security by overviewing different smart irrigation approaches. Widely used traditional irrigation scheduling methods (based on weather, plant, and soil moisture

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26

Li, Maona, Yunling Wang, Hui Guo, Feng Ding, and Haijun Yan. "Evaluation of variable rate irrigation management in forage crops: Saving water and increasing water productivity." Agricultural Water Management 275 (January 2023): 108020. http://dx.doi.org/10.1016/j.agwat.2022.108020.

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Yu, Zhenzhen, Chun Wang, Huafen Zou, et al. "The Effects of Aerated Irrigation on Soil Respiration and the Yield of the Maize Root Zone." Sustainability 14, no. 8 (2022): 4378. http://dx.doi.org/10.3390/su14084378.

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To investigate the effect of aerated irrigation on the soil environment and yield in the root zone of maize, and to provide a basis for the extension of aerated irrigation, a 2-year experiment (2020–2021) was conducted at the Zhanjiang National Soil Quality Observation Experiment Station, with two experimental observations per year (spring-summer and fall-winter) to investigate the effects of aerated irrigation (AI) and non-aerated irrigation (CK) on soil respiration rate, soil temperature, water content, oxygen content, soil bacterial biomass and root biomass. We used partial least square reg

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Prasad, Devendra, Kamali Singla, Vidhu Baggan, and Achal. "System Model for Smart Precision Farming for High Crop Yielding." Journal of Computational and Theoretical Nanoscience 16, no. 10 (2019): 4406–11. http://dx.doi.org/10.1166/jctn.2019.8533.

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The meticulous application of Sensing and Machine Learning technology in precision farming has optimized the irrigation resources, improved the quality of crops, minimizes the risk of diseases in fields and reduces the energy consumption. The proper crop management and proper placement of seeds also controls the crop diseases as well as reduces the expenses of irrigation and pesticides etc. The diseases that can be caused in various stages are monitored by proper visual identification of the disease and the precise amount and position of spraying medicine for that plant is calculated. There is

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Dhehibi, Boubaker, Mohamed Ben Salah, Aymen Frija, Aden Aw-Hassan, Hamdane El Ouhibi, and Youssef M. Al Raisi. "Economic and Technical Evaluation of Different Irrigation Systems for Date Palm Farming System in the GCC Countries: Case of Oman." Environment and Natural Resources Research 8, no. 3 (2018): 55. http://dx.doi.org/10.5539/enrr.v8n3p55.

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In the frame of the ICARDA project “Development of sustainable date palm production systems in the GCC countries of the Arabian Peninsula”, researchers succeeded to introduce one promising technology (subsurface drip irrigation - SDI) in the date palm farming system in the Gulf region, defined as the poorest in the word in terms of water resources. In the light of these challenges, the main objective of this study is to evaluate the effect of the irrigation water volumes on the date palm productivity and water use efficiency under several conventional and improved irrigations systems.Three int

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Li, Xiumei, Weixia Zhao, Jiusheng Li, and Yanfeng Li. "Effects of irrigation strategies and soil properties on the characteristics of deep percolation and crop water requirements for a variable rate irrigation system." Agricultural Water Management 257 (November 2021): 107143. http://dx.doi.org/10.1016/j.agwat.2021.107143.

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Roy, Sougata, Sanjay Kumar Rathour, Anjali Mehta, Ritu Dwivedi, Surabhi, and Aastika Pandey. "Precision Water Management for Resource Conservation in India's Dryland Agriculture: Strategies and Technologies." International Journal of Environment and Climate Change 14, no. 8 (2024): 464–80. http://dx.doi.org/10.9734/ijecc/2024/v14i84367.

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Water is a critical input for agricultural production systems. Increasing water productivity in field crops through precision water management (PWM) is essential for optimizing resource use. PWM aims to achieve maximum crop yield with optimal water utilization, enhancing productivity and crop quality through judicious irrigation. Proper crop monitoring related to applied irrigation helps growers manage their fields efficiently, saving water, time, and costs while improving yields compared to conventional systems. Analysing crop-water requirements and applying irrigation based on these paramete

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32

Choudhary, Ramawatar, Ramesh Chand Kantwa, Astha, Ganesh Ram, Hemant Kumar Meena, and Sunil Khandoliya. "Scope and opportunities of precision agriculture on arid horticulture-A review." Indian Journal of Arid Horticulture 6, no. 2 (2025): 21–28. https://doi.org/10.48165/ijah.2024.6.2.3.

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Precision agriculture (PA) is the use of mechatronics to control the fields' temporal and spatial variability. Numerous elements, including appropriate planting, weeding and interculture, irrigation, insect and pest attacks, and harvesting methods, influence the output and quality of horticultural commodities. A proactive strategy that lowers some of the risks associated with these frequent horticultural and agricultural variables is precision agriculture. Producing high-quality, highly productive fruits in the fields requires the development of an exact and accurate autonomous production syst

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Serrano, João, Shakib Shahidian, José Marques da Silva, et al. "Mapping Management Zones Based on Soil Apparent Electrical Conductivity and Remote Sensing for Implementation of Variable Rate Irrigation—Case Study of Corn under a Center Pivot." Water 12, no. 12 (2020): 3427. http://dx.doi.org/10.3390/w12123427.

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Climate change, especially the trend towards global warming, will significantly affect the global hydrological cycle, leading to a general reduction of the water available for agriculture. In this scenario, it is essential that research should focus on the development of ‘water saving’ techniques and technologies. This work summarizes the methodology followed in a project for large scale implementation of variable rate irrigation (VRI) systems using center pivots in corn crop. This is based on technologies for monitoring (i) soil electrical conductivity (ECa) and altimetry, (ii) soil moisture

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Sobenko, Luiz R., Antonio P. de Camargo, Tarlei A. Botrel, et al. "Performance of an Iris Mechanism Equipped with Fixed and Rotating Deflector Plates for Variable Rate Sprinkler Irrigation." Journal of Irrigation and Drainage Engineering 145, no. 12 (2019): 04019027. http://dx.doi.org/10.1061/(asce)ir.1943-4774.0001431.

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Yari, Aghil, Chandra A. Madramootoo, Shelley A. Woods, Viacheslav I. Adamchuk, and Hsin-Hui Huang. "Assessment of Field Spatial and Temporal Variabilities to Delineate Site-Specific Management Zones for Variable-Rate Irrigation." Journal of Irrigation and Drainage Engineering 143, no. 9 (2017): 04017037. http://dx.doi.org/10.1061/(asce)ir.1943-4774.0001222.

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36

Li, Xiumei, Weixia Zhao, Jiusheng Li, and Yanfeng Li. "Maximizing water productivity of winter wheat by managing zones of variable rate irrigation at different deficit levels." Agricultural Water Management 216 (May 2019): 153–63. http://dx.doi.org/10.1016/j.agwat.2019.02.002.

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Zhang, Minne, Weixia Zhao, Changxin Zhu, and Jiusheng Li. "Influence of the sampling time interval of canopy temperature on the dynamic zoning of variable rate irrigation." Agricultural Water Management 295 (April 2024): 108754. http://dx.doi.org/10.1016/j.agwat.2024.108754.

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Zhang, Qian, Yanfang Diao, Guiyu Yang, et al. "Study on Health Evaluation of an Ecological Irrigation District in Helan County, China." Water 13, no. 23 (2021): 3325. http://dx.doi.org/10.3390/w13233325.

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The construction of ecological irrigation districts is of great significance to protect the Yellow River ecology and achieve sustainable development of the local ecological economy. Taking the ecological irrigation district of Helan County as the study area, a health evaluation index system of the irrigation district was established, including three primary indexes of ecological environment, modernization level, and agricultural production and benefit, and 20 secondary indexes. Then, the Topsis method, entropy weight evaluation method, fuzzy pattern recognition model, and variable fuzzy model

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Farag, Abousrie A., and Juan Gabriel Pérez-Pérez. "Benchmarking Measures for the Adaptation of New Irrigation Solutions for Small Farms in Egypt." Water 17, no. 2 (2025): 137. https://doi.org/10.3390/w17020137.

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The aim of this study is to construct and validate an expert system to predict the adaptation of irrigation technologies, water-saving strategies, and monitoring tools by small-scale farmers in Egypt. The research investigates the impact of economic, educational, environmental, and social factors on adaptation rates. To build the expert system, extensive knowledge was collected from experts, key concepts were identified, and production rules were created to generate tailored scenarios. These scenarios utilize the empirical cumulative distribution function (ECDF), selecting the scenario with th

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Islam, Md Saiful. "Growth and Yield Performance of Selected Wheat Genotypes at Variable Irrigation Management." Journal of Advanced Agriculture & Horticulture Research 1, no. 1 (2021): 24–32. http://dx.doi.org/10.55124/jahr.v1i1.40.

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The experiment was conducted in the Agronomy Field, Sher-e-Bangla Agricultural University (SAU), Dhaka-1207 during the period of November 17, 2016 to March 29, 2017 on growth and yield performance of selected wheat genotypes at variable irrigation. In this experiment, the treatment consisted of three varieties viz. V1 = BARI Gom 26, V2 = BARI Gom 28, V3 = BARI Gom 30, and four different irrigations viz. I0 = No Irrigation throughout the growing season, I1 = One irrigation (Irrigate at CRI stage), I2= Two irrigation (Irrigate at CRI and grain filling), I3= Three irrigation (irrigate at CRI, boo

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H. Teapon, Rizal Rahman, Harianto, Hermanto Siregar, and Widyastutik. "Impact of Climate Change and Technology on Food Availability in Sumatera, Indonesia." International Journal of Science and Society 4, no. 3 (2022): 411–22. http://dx.doi.org/10.54783/ijsoc.v4i3.533.

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 This study explores the impact of climate change and technology on food supply and demand, which complements the limits of previous findings. The main foundations are Hessian food production and Marshallian demand theories. It aims to analyze the factors influencing food availability and the response of each variable, as well as simulate the effect of climate change and technology. Secondary data from the Food Security and the Central Statistics Agency of 10 provinces in Sumatra will be used between the periods of 2010 to 2019. Furthermore, this study uses the simultaneous method of 8 s

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42

Neupane, Jasmine, and Wenxuan Guo. "Agronomic Basis and Strategies for Precision Water Management: A Review." Agronomy 9, no. 2 (2019): 87. http://dx.doi.org/10.3390/agronomy9020087.

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Agriculture faces the challenge of feeding a growing population with limited or depleting fresh water resources. Advances in irrigation systems and technologies allow site-specific application of irrigation water within the field to improve water use efficiency or reduce water usage for sustainable crop production, especially in arid and semi-arid regions. This paper discusses recent development of variable-rate irrigation (VRI) technologies, data and information for VRI application, and impacts of VRI, including profitability using this technology, with a focus on agronomic factors in precisi

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Elkaoud, Nabil, Saleh Ismail, Ragab Mahmoud, et al. "Efficient and Effective Irrigation Water Management Using Sprinkler Robot." Eng 6, no. 7 (2025): 138. https://doi.org/10.3390/eng6070138.

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This manuscript addresses the issue of irrigation water management with high efficiency and effectiveness and focuses on systems associated with significant water losses, which is sprinkler irrigation. This article presents mathematical modeling that enables the application of precision irrigation using a gun sprinkler robot. The sprinkler robot was fabricated in the Faculty of Agriculture and Natural Resources workshop at As-wan University. The experiments were conducted using 12, 14, and 16 mm nozzle sizes and three gun heights, 1.25, 1.5, and 2 m, at three forward speeds, 25, 50, and 75 m/h

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Meda, A., and P. Cornel. "Aerated biofilter with seasonally varied operation modes for the production of irrigation water." Water Science and Technology 61, no. 5 (2010): 1173–81. http://dx.doi.org/10.2166/wst.2010.059.

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Water reuse for agricultural irrigation can contribute to the conservation of valuable water resources and opens the possibility to reuse the wastewater's nutrients (N and P) at the same time. As irrigation is usually limited to vegetation periods, effluent requirements for treated wastewater may vary seasonally. A process concept for wastewater treatment with variable operation modes for the seasonal production of nutrient-rich irrigation water and nutrient-poor discharge water is proposed. It is shown that a two-step process consisting of organics removal followed by biological aerated filte

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Marecos do Monte, Helena, and António Albuquerque. "Analysis of constructed wetland performance for irrigation reuse." Water Science and Technology 61, no. 7 (2010): 1699–705. http://dx.doi.org/10.2166/wst.2010.063.

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Most of the wastewater treatment systems in small rural communities of the Cova da Beira region (Portugal) consist of constructed wetlands (CW) with horizontal subsurface flow (HSSF). It is believed that those systems allow the compliance of discharge standards as well as the production of final effluents with suitability for reuse. Results obtained in a nine-month campaign in an HSSF bed pointed out that COD and TSS removal were lower than expected. A discrete sampling also showed that removal of TC, FC and HE was not enough to fulfill international irrigation goals. However, the bed had a ve

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Boluwade, Alaba, Chandra Madramootoo, and Aghil Yari. "Application of Unsupervised Clustering Techniques for Management Zone Delineation: Case Study of Variable Rate Irrigation in Southern Alberta, Canada." Journal of Irrigation and Drainage Engineering 142, no. 1 (2016): 05015007. http://dx.doi.org/10.1061/(asce)ir.1943-4774.0000936.

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Tripathi, Rahul, Anjani Kumar, P. Guru, et al. "Precision farming technologies for water and nutrient management in rice: Challenges and opportunities." Oryza-An International Journal on Rice 58, Special (2021): 126–42. http://dx.doi.org/10.35709/ory.2021.58.spl.5.

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Enhancing the productivity of crops while reducing the environmental footprint are the major challenges especially for rice farming. Precison farming helps in optimising inputs such as fertilizers and water in tune with crop requirement recognizing the spatial and temporal variabilities within and across field. The precision tools viz. Remote sensing, site specific nutrient management systems, global positioning system (GPS), geographical information system (GIS), variable rate applicator, models and decision support system are used for implementing precision rice farming. The precision nutrie

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Gao, Ni, Yan Mo, Jiandong Wang, Luhua Yang, and Shihong Gong. "Effects of Flow Path Geometrical Parameters on the Hydraulic Performance of Variable Flow Emitters at the Conventional Water Supply Stage." Agriculture 12, no. 10 (2022): 1531. http://dx.doi.org/10.3390/agriculture12101531.

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We created a subsurface drip irrigation (SDI)-specific variable flow emitter (VFE) that switches working stages automatically based on the inlet pressure (H) to achieve a step change in the flow rate. At working stage I (H = 0.1 MPa), namely the conventional water supply stage, the VFE provided a normal flow rate (qI) of 1–2 L/h for crop irrigation. At working stage II (H > 0.1 MPa; exceeding the design pressure), VFE delivered a larger flow rate (qII). The larger qII facilitated water movement upward from the underground to the surface seedbed during the crop planting, thus ameliorating cr

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Takács, Sándor, Zoltán Pék, Dániel Csányi, et al. "Influence of Water Stress Levels on the Yield and Lycopene Content of Tomato." Water 12, no. 8 (2020): 2165. http://dx.doi.org/10.3390/w12082165.

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Good water supply practice provides benefits such as water and energy conservation but also alters the quality of yield. These effects of irrigation on yield quantity and quality are widely researched in the case of many plants. In tomato it can affect the soluble solids content positively together with a slight reduction in yield quantity as confirmed by many studies. There are results in the literature regarding its effect on carotenoid composition and lycopene content as well, but the effect on lycopene isomers has not been revealed yet. In this study, we investigated how different water su

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Fallowfield, H. J., N. J. Cromar, and L. M. Evison. "Coliform die-off rate constants in a high rate algal pond and the effect of operational and environmental variables." Water Science and Technology 34, no. 11 (1996): 141–47. http://dx.doi.org/10.2166/wst.1996.0273.

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High rate algal ponds (HRAPs) are an adaptation of waste stabilisation ponds, in which increased treatment efficiency and reduced pond area are achieved by optimising conditions for algal photosynthetic oxygen production. If the treated effluent is subsequently to be reused for irrigation of crops and recreational areas, from a public health viewpoint it is important to reduce the risk of contamination by pathogenic organisms. The microbiological quality of effluents is traditionally assessed by enumerating the coliform group of organisms. Die-off rate constants (Kb) of 0.35 − 2.34 d−1 were me

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