U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Subject "subsurface drainage" Remove constraint Subject: "subsurface drainage"
Start Over

Search

765  Search Results

« Previous | 1 - 20 of 765 |
Number of results to display per page

Search Results

1. Computation of subsurface drain spacing in the unsteady conditions using Artificial Neural Networks (ANN)

Author:
Ostad-Ali-Askari, Kaveh; Shayannejad, Mohammad
Source:
Applied water science 2021 v.11 no.2 pp. 21
ISSN:
2190-5487
Subject:
subsurface drainage,   etc   ; hydraulic conductivity; neural networks; water; water table; Iran;     Show all 6 Subjects
Abstract:
... Artificial neural networks are a tool for modeling of nonlinear systems in various engineering fields. These networks are effective tools for modeling the nonlinear systems. Each artificial neural network includes an input layer, an output layer between which there are one or some hidden layers. In each layer, there are one or several processing elements or neurons. The neurons of the input layer ...
DOI:
10.1007/s13201-020-01356-3

2. FloodStroem: A fast dynamic GIS-based urban flood and damage model

Author:
Thrysøe, Cecilie; Balstrøm, Thomas; Borup, Morten; Löwe, Roland; Jamali, Behzad; Arnbjerg-Nielsen, Karsten
Source:
Journal of hydrology 2021 v.600 pp. 126521
ISSN:
0022-1694
Subject:
subsurface drainage,   etc   ; climate change; hydrodynamics; hydrologic models; storms; streams; urbanization; Australia;     Show all 8 Subjects
Abstract:
... Due to climate change and urbanization, urban flood modelling has become an increasingly important tool in assessing flooding and associated damage costs. However, large computational demands of state-of-the art hydrodynamic flood models makes multiple and real-time simulations unfeasible. This study presents a fast-dynamic GIS-based flood model, FloodStroem. FloodStroem generates a surface networ ...
DOI:
10.1016/j.jhydrol.2021.126521

3. DRAINMOD modeling framework for simulating controlled drainage effect on lateral seepage from artificially drained fields

Author:
Youssef, Mohamed A.; Liu, Yu; Chescheir, George M.; Skaggs, R. Wayne; Negm, Lamyaa M.
Source:
Agricultural water management 2021 v.254 pp. 106944
ISSN:
0378-3774
Subject:
subsurface drainage,   etc   ; grasses; nitrogen; seepage; soil profiles; water management; water quality; water table; North Carolina;     Show all 9 Subjects
Abstract:
... We demonstrated a DRAINMOD modeling framework to predict controlled drainage (CD) effect on the fate of water in artificially drained agricultural fields, which is key for determining the water quality benefits of the practice. To demonstrate this modeling framework, DRAINMOD simulated the hydrology of a subsurface drained grass field in Eastern North Carolina, U.S. under both free drainage (FD) a ...
DOI:
10.1016/j.agwat.2021.106944

4. Subsurface Drainage and Water-Saving Irrigation in Sustainable Agriculture

Author:
Fujimaki, Haruyuki
Source:
Water 2021 v.13 no.10
ISSN:
2073-4441
Subject:
subsurface drainage,   etc   ; arid lands; irrigated farming; irrigation; salinity; sustainable agriculture; water; water conservation;     Show all 8 Subjects
Abstract:
... Salinity is a major threat for the sustainability of irrigated agriculture in drylands [...] ...
DOI:
10.3390/w13101332

5. Simulating internal watershed processes using multiple SWAT models

Author:
Apostel, Anna; Kalcic, Margaret; Dagnew, Awoke; Evenson, Grey; Kast, Jeffrey; King, Kevin; Martin, Jay; Muenich, Rebecca Logsdon; Scavia, Donald
Source:
The Science of the total environment 2021 v.759 pp. 143920
ISSN:
0048-9697
Subject:
subsurface drainage,   etc   ; basins; environment; farms; issues and policy; nitrogen; phosphorus; runoff; water quality; watershed management; watersheds;     Show all 11 Subjects
Abstract:
... The need for effective water quality models to help guide management and policy, and extend monitoring information, is at the forefront of recent discussions related to watershed management. These models are often calibrated and validated at the basin outlet, which ensures that models are capable of evaluating basin scale hydrology and water quality. However, there is a need to understand where th ...
DOI:
10.1016/j.scitotenv.2020.143920

6. Laboratory Tests of New Groundwater Table Level Regulators in Subsurface Drainage Systems

Author:
Popek, Zbigniew; Bajkowski, Sławomir; Siwicki, Piotr; Urbański, Janusz
Source:
Water 2021 v.13 no.5
ISSN:
2073-4441
Subject:
subsurface drainage,   etc   ; groundwater; propellers; rain; rivers; surface water; water table; watersheds;     Show all 8 Subjects
Abstract:
... The changes in hydrological conditions observed nowadays require economical use of water. This applies to water management both on a national scale and river basins and catchments, as well as on the scale of drainage systems and individual drainage networks. Outflow regulation is carried out by extending the outflow time of surface water collected during rainfall in various forms of retention in t ...
DOI:
10.3390/w13050631

7. Options for statistical analysis of unreplicated paired design drainage experiments

Author:
Pagliari, Paulo H.; Ranaivoson, Andry Z.; Strock, Jeffrey S.
Source:
Agricultural water management 2021 v.244 pp. 106604
ISSN:
0378-3774
Subject:
subsurface drainage,   etc   ; analysis of variance; data collection; normal distribution; time series analysis; water management; watersheds;     Show all 7 Subjects
Abstract:
... Field scale experiments are seldom replicated due to size constraints and limitations of other resources. This presents a difficulty in performing statistical analysis and interpretation of the results collected. In this paper we will evaluate water and nutrient effluent data from two fields, one managed under controlled subsurface drainage (CSSD) compared with an adjacent field under conventional ...
DOI:
10.1016/j.agwat.2020.106604

8. Assessing benefits of artificial drainage on soybean yield in the North Central US region

Author:
Mourtzinis, Spyridon; Andrade, José F.; Grassini, Patricio; Edreira, Juan I. Rattalino; Kandel, Hans; Naeve, Seth; Nelson, Kelly A.; Helmers, Matthew; Conley, Shawn P.
Source:
Agricultural water management 2021 v.243 pp. 106425
ISSN:
0378-3774
Subject:
subsurface drainage,   etc   ; climate; crop yield; economic impact; soybeans; surface drainage; surveys; water management; North Dakota;     Show all 9 Subjects
Abstract:
... Artificial drainage (AD) in producer fields can help avoid excess water and improve workability and timely fieldwork in comparison with soils that rely on natural drainage (ND). To date, most studies examining the effect of AD on crop yield were conducted at research stations and limited to a few sites and years. Here, we explored the influence of AD on soybean yield across the North Central US re ...
DOI:
10.1016/j.agwat.2020.106425

9. Nitrogen removal and greenhouse gas fluxes from integrated buffer zones treating agricultural drainage water

Author:
Carstensen, Mette Vodder; Zak, Dominik; van't Veen, Sofie Gyritia Madsen; Wisniewska, Kamila; Ovesen, Niels Bering; Kronvang, Brian; Audet, Joachim
Source:
The Science of the total environment 2021 v.774 pp. 145070
ISSN:
0048-9697
Subject:
subsurface drainage,   etc   ; denitrification; drainage water; greenhouse gases; greenhouses; methane; nitrates; nitrogen; nitrous oxide; risk; total nitrogen; water flow;     Show all 12 Subjects
Abstract:
... Integrated buffer zones (IBZ) are novel mitigation measures designed to decrease the loading of nitrogen (N) transported by subsurface drainage systems from agricultural fields to streams. In IBZ, drainage water flows into a pond with free water surface followed by an inundated, vegetated filterbed. This design provides an environment favorable for denitrification and thus a decrease in nitrate co ...
DOI:
10.1016/j.scitotenv.2021.145070

10. Determination of nitrate removal kinetics model parameters in woodchip bioreactors

Author:
Kouanda, Abdoul; Hua, Guanghui
Source:
Water research 2021 v.195 pp. 116974
ISSN:
0043-1354
Subject:
subsurface drainage,   etc   ; bioreactors; denitrification; enzyme kinetics; models; nitrates; research; stormwater; wastewater; water management; water pollution; wood chips;     Show all 12 Subjects
Abstract:
... Woodchip bioreactors have emerged as a viable water management tool to reduce nitrate contamination from agricultural subsurface drainage, wastewater, and stormwater. Understanding of denitrification kinetics is critical to the design and application of field woodchip bioreactors. The denitrification process in woodchip bioreactors generally obeys a model of Michaelis-Menten type enzyme kinetics. ...
DOI:
10.1016/j.watres.2021.116974

11. Detecting subsurface drainage pipes using a fully convolutional network with optical images

Author:
Song, Homin; Woo, Dong Kook; Yan, Qina
Source:
Agricultural water management 2021 v.249 pp. 106791
ISSN:
0378-3774
Subject:
subsurface drainage,   etc   ; Internet; data collection; furrows; nonpoint source pollution; preferential flow; private ownership; radar; water management; water quality; water table;     Show all 11 Subjects
Abstract:
... More than half of croplands in the Midwestern United States are equipped with subsurface drainage pipes to reduce excess water in productive but wet areas. The use of drainage systems not only reduces subsurface water table to prevent waterlogging and flooding but also increases nutrient losses by developing artificial preferential flow paths. The exact locations of subsurface drainage pipes are t ...
DOI:
10.1016/j.agwat.2021.106791

12. Simulation study on performance of nitrogen loss of an improved subsurface drainage system for one-time drainage using HYDRUS-2D

Author:
Tao, Yuan; Li, Na; Wang, Shaoli; Chen, Haorui; Guan, Xiaoyan; Ji, Mengzhe
Source:
Agricultural water management 2021 v.246 pp. 106698
ISSN:
0378-3774
Subject:
subsurface drainage,   etc   ; agricultural land; ammonium nitrogen; models; nitrate nitrogen; nitrogen; rain; soil; water management; water table; China;     Show all 11 Subjects
Abstract:
... Improved subsurface drainage has been verified as a more efficient drainage technique for solving problems of farmland shortage and frequent floods in South China. However, the environmental effects of improved subsurface drainage with different parameters have rarely been studied. In this study, nitrogen loss in outflow and soil nitrogen content under improved subsurface drainage for one-time dra ...
DOI:
10.1016/j.agwat.2020.106698

13. Experiment and numerical simulation for designing layout parameters of subsurface drainage pipes in arid agricultural areas

Author:
Qian, Yingzhi; Zhu, Yan; Ye, Ming; Huang, Jiesheng; Wu, Jingwei
Source:
Agricultural water management 2021 v.243 pp. 106455
ISSN:
0378-3774
Subject:
subsurface drainage,   etc   ; desalination; mathematical models; salinity; soil salinization; soil water; soil water content; water flow; water management; water table; China;     Show all 11 Subjects
Abstract:
... Subsurface drainage is effective for not only controlling groundwater table depth but also alleviating soil salinization especially in arid and semi-arid agricultural areas. While substantial research efforts have been spent to determine the parameters (e.g., drain depth, drain spacing, and pipe diameter) of subsurface drainage pipe layout for water drainage, less attention has been paid to determ ...
DOI:
10.1016/j.agwat.2020.106455

14. Exploring the effectiveness of drainage water management on water budgets and nitrate loss using three evaluation approaches

Author:
Shedekar, Vinayak S.; King, Kevin W.; Fausey, Norman R.; Islam, Khandakar R.; Soboyejo, Alfred B.O.; Kalcic, Margaret M.; Brown, Larry C.
Source:
Agricultural water management 2021 v.243 pp. 106501
ISSN:
0378-3774
Subject:
subsurface drainage,   etc   ; crop production; evapotranspiration; hydrologic models; nitrates; runoff; seepage; uncertainty; water management; water quality; watersheds; Ohio;     Show all 12 Subjects
Abstract:
... Subsurface (tile) drainage is a necessary practice for economic crop production in humid, poorly drained regions of the world. Drainage water management (DWM), also known as controlled drainage, is among the suite of practices designed to mitigate water quality issues associated with subsurface drainage. Studies evaluating DWM generally include field experiments or simulation models to estimate wa ...
DOI:
10.1016/j.agwat.2020.106501

15. Dynamic assessment of the impacts of global warming on nitrate losses from a subsurface-drained rainfed-canola field

Author:
Haghnazari, Farzad; Karandish, Fatemeh; Darzi-Naftchali, Abdullah; Šimůnek, Jiří
Source:
Agricultural water management 2020 v.242 pp. 106420
ISSN:
0378-3774
Subject:
subsurface drainage,   etc   ; canola; meteorological data; nitrates; soil water; water management;     Show all 6 Subjects
Abstract:
... The impact of global warming on water and nitrate losses from a rainfed-canola cropping system under various artificial drainage systems was assessed using an integrated field-modeling approach. Four subsurface drainage systems with different drain depths (Dₓ) and spacings (Ly), including D₀.₉₀L₃₀, D₀.₆₅L₃₀, D₀.₆₅L₁₅, and Bilevel (with a drain spacing of 15 m and alternate drain depths of 0.65 and ...
DOI:
10.1016/j.agwat.2020.106420

16. Evaluation and determination of subsurface drainage spacing in two steady and unsteady flow conditions with closure of the impermeable layer to the ground surface. case study: Markazi province, Iran

Author:
Moshayedi, Behzad; Najarchi, Mohsen; Najafizadeh, Mohammad Mahdi; Khaghani, Shahab
Source:
Irrigation and drainage 2020 v.69 no.4 pp. 756-775
ISSN:
1531-0353
Subject:
subsurface drainage,   etc   ; case studies; models; rain; transient flow; Iran;     Show all 6 Subjects
Abstract:
... In this paper unsteady methods which are a function of time and steady conditions that are independent of time are used to evaluate the subsurface drainage system established in the upstream lands of the Senejan plain located in the centre of Iran. In order to determine the drain spacing, the steady Hooghoudt model and the unsteady Glover–Dumm, modified Glover and van Schilfgaarde models in rainy ...
DOI:
10.1002/ird.2457

17. Application of artificial neural networks to the design of subsurface drainage systems in Libyan agricultural projects

Author:
Ellafi, Murad A.; Deeks, Lynda K.; Simmons, Robert W.
Source:
Journal of hydrology 2021 v.35 pp. 100832
ISSN:
2214-5818
Subject:
subsurface drainage,   etc   ; computer software; data collection; decision making; pedotransfer functions; prediction; saturated hydraulic conductivity; systems engineering; water table; Libya; Sahara Desert;     Show all 11 Subjects
Abstract:
... The study data draws on the drainage design for Hammam agricultural project (HAP) and Eshkeda agricultural project (EAP), located in the south of Libya, north of the Sahara Desert. The results of this study are applicable to other arid areas.This study aims to improve the prediction of saturated hydraulic conductivity (Kₛₐₜ) to enhance the efficacy of drainage system design in data-poor areas. Art ...
DOI:
10.1016/j.ejrh.2021.100832

18. Improvement of the Water Erosion Prediction Project (WEPP) model for quantifying field scale subsurface drainage discharge

Author:
Revuelta-Acosta, J.D.; Flanagan, D.C.; Engel, B.A.; King, K.W.
Source:
Agricultural water management 2021 v.244 pp. 106597
ISSN:
0378-3774
Subject:
subsurface drainage,   etc   ; Agricultural Research Service; Water Erosion Prediction Project; data collection; nitrogen; phosphorus; runoff; sediments; soil water; subsurface flow; water conservation; water quality; water table; watersheds; Lake Erie;     Show all 15 Subjects
Abstract:
... In the poorly drained regions of the world, subsurface drainage systems are required to remove excess water for crop growth. Plastic drains alter a field’s hydrology by lowering the water table, reducing surface ponding, and reducing surface runoff. One significant concern with the use of subsurface drainage systems is adverse environmental effects because of the modification of the soil water dyn ...
DOI:
10.1016/j.agwat.2020.106597

19. Reduction of nutrient loads from agricultural subsurface drainage water in a small, edge-of-field constructed treatment wetland

Author:
Gordon, Brad A.; Lenhart, Christian; Peterson, Heidi; Gamble, Joshua; Nieber, John; Current, Dean; Brenke, Ashley
Source:
Ecological engineering 2021 v.160 pp. 106128
ISSN:
0925-8574
Subject:
subsurface drainage,   etc   ; ; drainage water; groundwater; groundwater flow; infiltration rate; nitrate nitrogen; nitrogen; phosphorus; rowcrops; streams; tile drainage; total phosphorus; vegetation; watersheds; wetlands;     Show all 16 Subjects
Abstract:
... Constructed treatment wetlands are a common practice for filtering nitrogen from agricultural sub-surface (i.e. tile) drainage in the Midwest. Wetland size recommendations typically depend on watershed size, but little is known about the effectiveness of wetlands with a pooled area as small as 0.11 ha combined with a high infiltration rate and sub-surface treatment. A small, edge-of-field wetland ...
DOI:
10.1016/j.ecoleng.2020.106128

20. Performances of Sheet-Pipe Typed Subsurface Drainage on Land and Water Productivity of Paddy Fields in Indonesia

Author:
Arif, Chusnul; Setiawan, Budi Indra; Saptomo, Satyanto Krido; Matsuda, Hiroshi; Tamura, Koremasa; Inoue, Youichi; Hikmah, Zaqiah Mambaul; Nugroho, Nurkholish; Agustiani, Nurwulan; Suwarno, Willy Bayuardi
Source:
Water 2020 v.13 no.1
ISSN:
2073-4441
Subject:
subsurface drainage,   etc   ; aeration; flooded conditions; grain yield; moles; paddies; polyethylene; rice; soil water; weather; Indonesia;     Show all 11 Subjects
Abstract:
... Subsurface drainage technology may offer a useful option in improving crop productivity by preventing water-logging in poor drainage paddy fields. The present study compared two paddy fields with and without sheet-pipe type subsurface drainage on land and water productivities in Indonesia. Sheet-pipe typed is perforated plastic sheets with a hole diameter of 2 mm and made from high-density polyeth ...
DOI:
10.3390/w13010048