Precision Agriculture: Irrigation

O’Shaughnessy, Susan A.; Rush, C. M.

doi:10.1016/b978-0-444-52512-3.00235-7

Cited by 12 publications

(8 citation statements)

References 81 publications

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“…In order to successfully apply infrared thermometry as a tool for assessing plant water status, it is important to differentiate between abiotic (such as water stress) and biotic stresses (such as plant diseases and pest infestation). Multiband optical sensors could be applied in detecting various crop diseases and crop infestation within a field by computing vegetation indices based on canopy reflectance measurements [33]. This has been applied by Garcia-Ruiz et al [95] for detecting citrus greening and by Yang et al [96] for detecting infestation of green bugs and aphids in wheat.…”

Section: Thermal Sensingmentioning

confidence: 99%

“…O'Shaughnessy et al [33] suggested that the size and numbers of irrigation management zones that can be controlled in a precision irrigation strategy will determine the overall flexibility of the system. For moving application systems, the width of the management zone is dependent on the number of drops or nozzles within an individually controlled set (i.e., sprinklers controlled by a single solenoid valve) and the length will be dependent on the pattern of variability in the direction of the traveling sprinkler.…”

Section: Spatial Scales Of Irrigation Managementmentioning

confidence: 99%

“…It is also important to investigate the economics of yield reduction associated with deficit irrigation strategies. O'Shaughnessy et al [33] suggested that implementing deficit irrigation as part of precision irrigation management will involve the continuous assessment of crop stress and growth stage throughout the growing season. This will be instrumental in avoiding temporary severe stress which could result in uneconomic reduction in crop yield or quality.…”

Section: Management Considerationsmentioning

confidence: 99%

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Advanced Monitoring and Management Systems for Improving Sustainability in Precision Irrigation

et al. 2017

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Globally, the irrigation of crops is the largest consumptive user of fresh water. Water scarcity is increasing worldwide, resulting in tighter regulation of its use for agriculture. This necessitates the development of irrigation practices that are more efficient in the use of water but do not compromise crop quality and yield. Precision irrigation already achieves this goal, in part. The goal of precision irrigation is to accurately supply the crop water need in a timely manner and as spatially uniformly as possible. However, to maximize the benefits of precision irrigation, additional technologies need to be enabled and incorporated into agriculture. This paper discusses how incorporating adaptive decision support systems into precision irrigation management will enable significant advances in increasing the efficiency of current irrigation approaches. From the literature review, it is found that precision irrigation can be applied in achieving the environmental goals related to sustainability. The demonstrated economic benefits of precision irrigation in field-scale crop production is however minimal. It is argued that a proper combination of soil, plant and weather sensors providing real-time data to an adaptive decision support system provides an innovative platform for improving sustainability in irrigated agriculture. The review also shows that adaptive decision support systems based on model predictive control are able to adequately account for the time-varying nature of the soil-plant-atmosphere system while considering operational limitations and agronomic objectives in arriving at optimal irrigation decisions. It is concluded that significant improvements in crop yield and water savings can be achieved by incorporating model predictive control into precision irrigation decision support tools. Further improvements in water savings can also be realized by including deficit irrigation as part of the overall irrigation management strategy. Nevertheless, future research is needed for identifying crop response to regulated water deficits, developing improved soil moisture and plant sensors, and developing self-learning crop simulation frameworks that can be applied to evaluate adaptive decision support strategies related to irrigation.

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Section: Thermal Sensingmentioning

confidence: 99%

Section: Spatial Scales Of Irrigation Managementmentioning

confidence: 99%

Section: Management Considerationsmentioning

confidence: 99%

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Advanced Monitoring and Management Systems for Improving Sustainability in Precision Irrigation

et al. 2017

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“…Addressing spatial variability in soil properties and crop growth through site‐specific irrigation has been an attractive and challenging topic for researchers and designers. Variable rate irrigation (VRI) has the potential to solve these difficulties (O'Shaughnessy and Rush, ) and has primarily been studied in the USA (e.g. O'Shaughnessy et al, ; Sui and Baggard, ) and Canada (Yari et al, ).…”

Section: Sprinkler Irrigation Studiesmentioning

confidence: 99%

Increasing Crop Productivity in an Eco‐Friendly Manner by Improving Sprinkler and Micro‐Irrigation Design and Management: A Review of 20 Years' Research at the IWHR, China

2017

Irrigation and Drainage

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The use of sprinkler and micro‐irrigation has progressed continuously from being a novelty that was employed by researchers to being widely accepted, efficient methods of irrigation for many crops during the past 30–40 years in China. This paper reviews the studies that have been conducted on sprinkler and micro‐irrigation at the WatSave Lab in the China Institute of Water Resources and Hydropower Research (IWHR) over the past two decades. These studies address several areas of concern and provide partial answers to the questions raised during the application and extension of these relatively new irrigation technologies. With the aim of exploring the consumption of sprinkled water that is intercepted by the canopy, the amount of water interception and the losses were quantified, confirming that sprinkler irrigation is an efficient irrigation method. The standards of sprinkler and micro‐irrigation uniformity were studied with respect to many aspects of water and solute dynamics, environmental effects, and crop yield and quality under a wide range of environments from arid to subhumid climates for typical wheat, cotton, maize and vegetable crops. As a result, new target uniformity values have been recommended. Other studies on water, solute and bacterial transport from normal water and sewage effluent can also be useful in the design, operation, maintenance and management of irrigation systems. Copyright © 2017 John Wiley & Sons, Ltd.

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“…Agricultural waters account for 95% of the total water consumption in the world [1]. For China, particularly those irrigation areas of northern China, inadequate rainfall and limited surface water supply have seriously impeded the development of agriculture [2].…”

Section: Introductionmentioning

confidence: 99%

Soil Salt Distribution and Tomato Response to Saline Water Irrigation under Straw Mulching

Zhai

Yang

2016

PLoS ONE

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To investigate better saline water irrigation scheme for tomatoes that scheduling with the compromise among yield (Yt), quality, irrigation water use efficiency (IWUE) and soil salt residual, an experiment with three irrigation quotas and three salinities of irrigation water was conducted under straw mulching in northern China. The irrigation quota levels were 280 mm (W1), 320 mm (W2) and 360 mm (W3), and the salinity levels were 1.0 dS/m (F), 3.0 dS/m (S1) and 5.0 dS/m (S2). Compared to freshwater, saline water irrigations decreased the maximum leaf area index (LAIm) of tomatoes, and the LAIm presented a decline tendency with higher salinity and lower irrigation quota. The best overall quality of tomato was obtained by S2W1, with the comprehensive quality index of 3.61. A higher salinity and lower irrigation quota resulted in a decrease of individual fruit weight and an increase of the blossom-end rot incidence, finally led to a reduction in the tomato Yt and marketable yield (Ym). After one growth season of tomato, the mass fraction of soil salt in plough layer under S2W1 treatment was the highest, and which presented a decline trend with an increasing irrigation quota. Moreover, compared to W1, soil salts had a tendency to move to the deeper soil layer when using W2 and W3 irrigation quota. According to the calculation results of projection pursuit model, S1W3 was the optimal treatment that possessed the best comprehensive benefit (tomato overall quality, Yt, Ym, IWUE and soil salt residual), and was recommended as the saline water irrigation scheme for tomatoes in northern China.

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Precision Agriculture: Irrigation

Cited by 12 publications

References 81 publications

Advanced Monitoring and Management Systems for Improving Sustainability in Precision Irrigation

Advanced Monitoring and Management Systems for Improving Sustainability in Precision Irrigation

Increasing Crop Productivity in an Eco‐Friendly Manner by Improving Sprinkler and Micro‐Irrigation Design and Management: A Review of 20 Years' Research at the IWHR, China

Soil Salt Distribution and Tomato Response to Saline Water Irrigation under Straw Mulching

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