Developing a Soil Moisture-Based Irrigation Scheduling Tool (SMIST) Using Web-GIS Technology PDF Download
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Author: Mohammadreza Nikfal
Publisher:
ISBN:
Category : Irrigation scheduling
Languages : en
Pages : 62
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Book Description
Software as a service (SaaS) is a primary working pattern and a significant application model for next generation Internet application. Web GIS services are the new generation of the Software as a service that can provide the hosted spatial data and GIS functionalities to the practical customized applications. This study focused on developing a webGIS based application, Soil Moisture-Based Irrigation Scheduling Tool (SMIST), for predicting soil moisture in the next seven days using the soil moisture diagnostic equation (SMDE) and the upcoming seven precipitation forecasts made by the National Weather Service (NWS), and ultimately producing an accurate irrigation schedule based on the predicted soil moisture. The SMIST is expected to be capable of improving the irrigation efficiency to protect groundwater resources in the Texas High Plains and reducing the cost of energy for pumping groundwater for irrigation, as an essential public concern in this area. The SMIST comprised an integration of web-based programs, a Hydrometeorological model, GIS, and geodatabase. It integrates two main web systems, the soil moisture estimating web application for irrigation scheduling based on the soil moisture diagnostic equation (SMDE), and an agricultural field delineation webGIS application to prepare input data and the model parameters. The SMIST takes advantage of the latest historical and forecasted precipitation data to predict soil moisture in the user-specified agricultural field(s). In this regard, the next seven days soil moisture versus the soil moisture threshold for normal growth would be presented in the result page of the SMIST to help users to adjust irrigation rate and sequence.
Author: Mohammadreza Nikfal
Publisher:
ISBN:
Category : Irrigation scheduling
Languages : en
Pages : 62
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Book Description
Software as a service (SaaS) is a primary working pattern and a significant application model for next generation Internet application. Web GIS services are the new generation of the Software as a service that can provide the hosted spatial data and GIS functionalities to the practical customized applications. This study focused on developing a webGIS based application, Soil Moisture-Based Irrigation Scheduling Tool (SMIST), for predicting soil moisture in the next seven days using the soil moisture diagnostic equation (SMDE) and the upcoming seven precipitation forecasts made by the National Weather Service (NWS), and ultimately producing an accurate irrigation schedule based on the predicted soil moisture. The SMIST is expected to be capable of improving the irrigation efficiency to protect groundwater resources in the Texas High Plains and reducing the cost of energy for pumping groundwater for irrigation, as an essential public concern in this area. The SMIST comprised an integration of web-based programs, a Hydrometeorological model, GIS, and geodatabase. It integrates two main web systems, the soil moisture estimating web application for irrigation scheduling based on the soil moisture diagnostic equation (SMDE), and an agricultural field delineation webGIS application to prepare input data and the model parameters. The SMIST takes advantage of the latest historical and forecasted precipitation data to predict soil moisture in the user-specified agricultural field(s). In this regard, the next seven days soil moisture versus the soil moisture threshold for normal growth would be presented in the result page of the SMIST to help users to adjust irrigation rate and sequence.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
By using the Soil Conservation Service (SCS) polynomial method for corn in the Mississippi Irrigation Scheduling Tool (MIST), the total number of irrigations required during the growing season can be reduced depending on the variety, growing degree days required to reach maturity, and the length of the growing season. Results showed that even though the SCS method called for irrigations earlier in the season, the method did not trigger irrigation events after the crop reached physiological maturity. In addition, although changing the timing of model initiation (planting vs emergence) was not important on the total crop water use, it may have other benefits. Lastly, Watermark 200SS sensors generally did not trigger similar irrigation events, especially around the mid-season, but shallower sensors somewhat matched and showed similar trends with the MIST modeled results and irrigation records. Therefore, using MIST with sensors may be beneficial when making precise irrigation scheduling decisions.
Author: Hazel Buka
Publisher:
ISBN:
Category :
Languages : en
Pages : 61
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Book Description
By using the Soil Conservation Service (SCS) “polynomial” method for corn in the Mississippi Irrigation Scheduling Tool (MIST), the total number of irrigations required during the growing season can be reduced depending on the variety, growing degree days required to reach maturity, and the length of the growing season. Results showed that even though the SCS method called for irrigations earlier in the season, the method did not trigger irrigation events after the crop reached physiological maturity. In addition, although changing the timing of model initiation (planting vs emergence) was not important on the total crop water use, it may have other benefits. Lastly, Watermark 200SS sensors generally did not trigger similar irrigation events, especially around the mid-season, but shallower sensors somewhat matched and showed similar trends with the MIST modeled results and irrigation records. Therefore, using MIST with sensors may be beneficial when making precise irrigation scheduling decisions.
Author: Blaine Hanson
Publisher: University of California, Agriculture and Natural Resources
ISBN: 9781601074812
Category : Technology & Engineering
Languages : en
Pages : 58
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Book Description
Monitoring soil moisture is an alternate method to water-based balance methods of managing irrigation water. Using this method you can "see" what is going on in the soil and determine answers to some key irrigation management questions: Did enough water infiltrate the soil? Is too much water being applied? What is the water uptake pattern of the roots? When should irrigation take place? What was the depth reached by the irrigation? Includes 24 figures and 7 tables, metric conversions, and an appendix of typical root depths. One of a series of water management handbooks prepared by the UC Irrigation Program.
Author: Abbas Hadi Farran
Publisher:
ISBN:
Category :
Languages : en
Pages : 158
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Book Description
Water is a key element in the survival of life on earth. Despite this importance, this valuable resource is being abused; either polluted or wasted. This thesis dealt with water wastage coming from agricultural use, i.e. irrigation. This wastage is the result of poor irrigation scheduling techniques, in addition to the use of inefficient water application systems. The aim of this study was to propose a dynamic, precise, and easy to use,GIS based irrigation scheduling model that could respond to different varying climatic conditions, improving water requirement computation precision. The model developed in this study consists of three parts; the first part involved reference evapotranspiration rate computationusing the FAO-Penman-Monteith CROPWAT software model. The second part dealt with actual crop evapotranspiration rate determination; this task involves correcting the reference evapotranspiration rate, which was determined in the first part. This correction is a function of crop type, stage of growth, in addition to soil parameters; according to the Nimah-Khalouf 1987 model. The third part involved schedule formulation based on the data determined in the preceding two parts. These three parts make up an irrigation scheduling model; this model was integrated into ESRI ArcMap, a GIS software. This integration adds a lot of functionality to the model; flexibility, updatability, ability to create a custom user interface which facilitates user interaction with the model, etc... The developed model was tested for functionality, in addition to responsiveness to climate variability taking Lebanon as a case study; it was found to be responsive to different scenarios of climate variability, fulfilling the objective of this study. Finally, this study resulted in the development of a GIS based irrigation scheduling model that could be further developed to be used in various applications: water requirement determination on regional and/or watershed level, another application would be irrigation requirement extension services, in addition to the ability of producing informative thematic maps.
Author: Michael Thomas Plumblee
Publisher:
ISBN:
Category :
Languages : en
Pages : 80
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Book Description
Through proper irrigation scheduling and management of damaged cotton, sustainable agricultural withdrawal from the Mississippi River Valley Alluvial Aquifer can be achieved while maximizing net returns. This research was conducted to 1) develop a sensor based irrigation strategy that maximized cotton lint yield and quality, irrigation, and water use efficiency (IWUE) and 2) quantify the effects of timing of damage, intensity, and foliar N on cotton growth and development. Lint yield, fiber quality, and IWUE were optimized using a season-long irrigation threshold of -90 kPa and irrigation terminated 2-weeks before cracked boll. Regardless of cotton variety (early- or latematuring) or timing of damage, plant height, number of nodes, and lint yield were negatively correlated with the intensity of damage. Moreover, the application of foliar nitrogen to damaged cotton had no effect on plant growth, lint yield, or fiber quality, regardless of N application timing. These data indicate that lint yield, and fiber quality are optimized when cotton varieties are selected based on yield potential, irrigated at -90 kPa threshold, and irrigations are terminated two weeks before cracked boll.
Author: Thomas Sitras
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: William L. Kranz
Publisher:
ISBN:
Category : Irrigation engineering
Languages : en
Pages : 7
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Author: L. Salazar
Publisher:
ISBN:
Category :
Languages : en
Pages : 178
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Book Description
Estimating irrigation requirements: reference crop evapotranspiration, Crop coefficients; Soil and crop parameters: soil moisture storage and availability, Development of the soil water reservoir, Soil water availability and crop use, Soil intake characteristics; Irrigation scheduling: basic equations, Scheduling the farm system. Water management; Control of irrigation water: Farm control structures, Water measurement; Project irrigation scheduling; Use of lysimeters in irrigation scheduling; Developing the climate data base; Other aspects of irrigation management; Developing water management programs; Irrigation scheduling - successes and failures; Farm level scheduling.
Author: Silvana Della Manna
Publisher:
ISBN:
Category : Geographic information systems
Languages : en
Pages : 246
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Book Description
