Irrigation Science
Papers 1193
1 page of 120 pages (1,193 results)
#1Hongxu Zhou (CAU: China Agricultural University)H-Index: 1
#2Li Yunkai (CAU: China Agricultural University)H-Index: 11
Last.Zeyuan Liu (CAU: China Agricultural University)H-Index: 2
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The operation patterns of drip irrigation fertigation system have significant impacts on the emitter clogging. Exploring the dynamic variation and influence mechanism of mineral components in clogging substances under different operation patterns can provide suitable guidance for fertigation management models. In this study, an emitter clogging experiment was conducted through three operating irrigation patterns (once per day, OP1/1; once every 4 days, OP1/4; once every 7 days, OP1/7) by running...
#1Steven R. Evett (ARS: Agricultural Research Service)H-Index: 34
#2Kenneth C. Stone (ARS: Agricultural Research Service)H-Index: 21
Last.David J. AndersonH-Index: 1
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The concept of soil water contents at field capacity (FC at 0.33 MPa) and at wilting point (WP at 15 MPa) is often used to explain plant water availability and as maximal and minimal limits on observed soil water content. Field observations often differ, however, from laboratory-determined FC and WP water content values. Moreover, as more capable sensors have become available and graphical plots of soil water dynamics have become common, plotting of FC and WP lines on such graphs often reinforce...
#1Christopher K. Parry (ARS: Agricultural Research Service)H-Index: 3
#2Thomas M. Shapland (UC Davis: University of California, Davis)H-Index: 4
Last.Andrew J. McElrone (ARS: Agricultural Research Service)H-Index: 30
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Surface renewal (SR) is a biometeorological technique that uses high-frequency air temperature measurements above a plant canopy to estimate sensible heat flux. The sensible heat flux is then used to estimate latent heat flux as the residual of a surface energy balance equation. SR previously relied on calibration against other methods (e.g., eddy covariance) to obtain accurate measurements of sensible heat flux, and this need for calibration limited the use of SR to research applications. Our g...
#1Jesús Garrido-Rubio (UCLM: University of Castilla–La Mancha)H-Index: 1
#2David Sanz (UCLM: University of Castilla–La Mancha)H-Index: 7
Last.Alfonso Calera (UCLM: University of Castilla–La Mancha)H-Index: 15
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The sustainability of groundwater abstractions for irrigation practices must be monitored to achieve a long-term equilibrium in aquifers. The accounting of irrigation water requirements in river basin management plans is commonly and mainly calculated by combining the average multiannual irrigated surface estimates and the unitary crop water requirements. However, remote sensing approaches allow water managers to incorporate more dynamic knowledge of a territory by monitoring irrigated crops. He...
#1Michael O. Adu (University of Cape Coast)H-Index: 6
#2David O. Yawson (University of Cape Coast)H-Index: 11
Last.Eugene Kwabena Opoku (University of Cape Coast)
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Water productivity has become a key requirement in sustainable crop production and environmental management. Deficit irrigation (DI) and partial root-zone drying irrigation (PRDI) are two strategies that have been exploited to maximize crop production per unit water, with attendant effect on the quality attributes of harvest index. We employed meta-analysis to synthesize evidence for the relative performance of full irrigation (FI), DI and PRDI for three quality attributes of fruits and vegetabl...
Potential low-cost micro-irrigation emitters appropriate for smallholder farmers in developing countries were the subject of a field experiment. Low-cost micro-irrigation technologies have been introduced with some success; however, further improvements are needed to increase adoption. The experiment evaluated three types of metal screw drip emitters (brass, zinc, and stainless steel), a conventional drip emitter, and a low-cost drip emitter (microtube). The effect of lateral flushing on emitter...
#1F. C. OliveiraH-Index: 3
#2Rogério Lavanholi (ESALQ: Escola Superior de Agricultura Luiz de Queiroz)
Last.Bruno MolleH-Index: 6
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Clay particles under certain physico-chemical and hydrodynamic conditions can form agglomerates after passing through a filtering system, which favours clogging of the emitters. The main factors interfering with the aggregation potential of clay particles are the type of clay mineral, pH, and ionic strength of the irrigation water. This study analysed the influence of ionic strength and type of clay mineral on clogging, discharge variation, and particle deposition in turbulent-flow non-pressure ...
#1Kelly R. Thorp (ARS: Agricultural Research Service)H-Index: 25
Engineering technologies for site-specific irrigation management (SSIM) have already been developed for applications in precision irrigation. However, further studies are needed to identify scenarios where SSIM leads to better agronomic outcomes than conventional uniform irrigation management (CUIM). The objective was to conduct a long-term simulation study to compare SSIM and CUIM given spatial soil variability at the Maricopa Agricultural Center (MAC) in Arizona. More than 500 surface soil sam...
Reasonable regulation of irrigation and drainage is an important way to decrease water resource waste and water pollution, and to ensure the sustainable utilization of water resources. In this study, appropriate irrigation and drainage methods are proposed by optimizing agricultural water and soil resources based on the current status of water resource utilization in irrigation district in Northwest China, and as much as possible to reduce the amount of irrigation and drainage while ensuring the...
#1Tobias E. Oker (KSU: Kansas State University)H-Index: 1
#2Isaya Kisekka (UC Davis: University of California, Davis)H-Index: 9
Last.Danny H. Rogers (KSU: Kansas State University)H-Index: 12
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Irrigation uniformity, application efficiency and seasonal irrigation uniformity of mobile drip irrigation (MDI) were compared to those of low elevation spray application (LESA) and low energy precision application (LEPA). A center pivot fitted with two sets of MDI (with dripper flow rates of 3.8 L/h and 7.6 L/h), LESA and LEPA was used in this study. Irrigation uniformity tests were conducted in accordance with the American Society of Agricultural Engineers’ standards. Application efficiency wa...
Top fields of study
Soil water