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subsurfacedrainage, etc ; land ownership; soil; Hungary; Show all 4 Subjects
Abstract:
... Due to extreme meteorological and soil hydrological situations the agricultural production security is highly unpredictable. To release the extent and duration of inland excess water (IEW) inundations or two-phase soil conditions during the period intended for cultivation, subsurface drainage (SD) has been used as a best practice in several countries. SD interventions took place between 1960’s and ...
subsurfacedrainage, etc ; Bayesian theory; models; prediction; soil; water table; Show all 6 Subjects
Abstract:
... Variational data assimilation (VDA) has been implemented to enhance the estimation of the unknown input parameters of a new agricultural subsurface drainage model (SIDRA-RU) through assimilating drainage discharge observations. The adjoint model of SIDRA-RU has been successfully generated through the generic automatic differentiation tool (TAPENADE). First, the adjoint model is used to explore the ...
subsurfacedrainage, etc ; aquifers; models; soil; topographic slope; water table; Show all 6 Subjects
Abstract:
... An analytical model is developed using the homotopy perturbation (HP) method for predicting explicitly the location of water table heights resulting from steady drainage of a homogeneous sloping aquifer overlying a uniformly sloping impervious barrier at a finite distance from the top of the soil. The model assumes the aquifer to receive a steady recharge at its surface, the drains to have equal w ...
subsurfacedrainage, etc ; algorithms; data collection; equations; hydraulic conductivity; models; porosity; Show all 7 Subjects
Abstract:
... A major step in designing a subsurface drainage system is calculation of drainpipe spacing. Nearly, all unsteady-state drainpipe-spacing equations use ratio of hydraulic conductivity (Ks) to drainable porosity (f) in the form of κ=Ksf. This work developed a novel inverse model based on Bees Algorithm to estimate the κ. We examined the efficiency of the developed inverse model to appraise the κ usi ...
subsurfacedrainage, etc ; agriculture; drain pipes; geotextiles; risk; sediments; soil; Canada; Show all 8 Subjects
Abstract:
... Knitted-sock envelopes are applied in agricultural subsurface drainage to prevent sediment clogging of the drain pipes. In the United States and Canada, sand-slot pipes are sometimes used as a cheaper alternative to sock-wrapped pipes. However, their initial system cost has not been compared. The main objective of this study was to evaluate the effect of pipe material on drain spacing and initial ...
subsurfacedrainage, etc ; climate change; ecosystems; human health; paddies; surface drainage; water management; Show all 7 Subjects
Abstract:
... The life cycle assessment (LCA) concept is a widely used tool to assess the environmental aspects of any activity throughout its life cycle. This study is the first application of LCA for assessing the agro-environmental sustainability of subsurface drainage systems under rice-canola cropping rotation. The systems included D0.65L15, D0.65L30, and D0.9L30, consisting of two depths (D=0.65 and 0.9 m ...
subsurfacedrainage, etc ; drainage water; flood irrigation; geotextiles; gravel; microirrigation; soil salts; China; Show all 8 Subjects
Abstract:
... The selection of suitable drainage materials is crucial for the efficient operation of subsurface drainage systems. Previous studies on drainage material selection have focused on anti‐clogging characteristics, and less attention has been given to their effects on the process of soil salt leaching, which is an important consideration in arid and semi‐arid areas. To investigate the influence of sub ...
subsurfacedrainage, etc ; climate change; crop insurance; drainage water; income; innovation adoption; irrigation; issues and policy; risk; Show all 9 Subjects
Abstract:
... Changing temperatures and precipitation patterns from climate change are a major risk to crop yields. Producers have technology options for mitigating this risk with one such technology termed drainage water recycling (DWR). DWR involves diverting subsurface drainage water to ponds where it is stored for later irrigation. Crop insurance may interfere with DWR adoption by providing producers with a ...
subsurfacedrainage, etc ; bioreactors; denitrification; environment; nitrate nitrogen; nitrogen; rain; temperature; water quality; wood chips; South Dakota; Show all 11 Subjects
Abstract:
... Edge-of-field practices such as denitrifying woodchip bioreactors can be used to improve the water quality of agricultural effluents. This study evaluated the effectiveness of four field-scale woodchip bioreactors in removing nitrate‑nitrogen (nitrate-N) from subsurface drainage in eastern South Dakota. Four woodchip bioreactors were installed and monitored between 2014 and 2016 near Arlington, Ba ...
subsurfacedrainage, etc ; aquifers; base flow; environment; groundwater; groundwater flow; hydrologic models; rain; runoff; soil; water yield; watersheds; Iowa; Show all 13 Subjects
Abstract:
... Drainage outflow from artificial subsurface drains can be a significant contributor to watershed water yield in many humid regions of the world. Although many studies have undertaken to simulate hydrologic processes in drained watersheds, there is a need for a study that first, uses physically based spatially distributed modeling for both surface and subsurface processes; and second, quantifies th ...
subsurfacedrainage, etc ; climate change; cultivars; food security; irrigation; land degradation; land use; salinity; salt tolerance; sustainable development; India; Show all 11 Subjects
Abstract:
... India is facing economic losses of $US ~ 3.0 billion annually due to the existence of ~ 6.73 million ha of un‐reclaimed salt‐affected soils (SASs). The losses may go up significantly as future projections indicate an increase in the area of SASs to the extent of ~16 million ha by 2050, due to the impact of faulty irrigation practices and climate change. Managing the SASs is one of the major challe ...
subsurfacedrainage, etc ; agricultural land; fertilizer application; groundwater; humans; nitrates; nitrogen; research; runoff; soil water; solutes; storms; water table; Illinois; Show all 14 Subjects
Abstract:
... Threshold changes in rainfall‐runoff generation commonly represent shifts in runoff mechanisms and hydrologic connectivity controlling water and solute transport and transformation. In watersheds with limited human influence, threshold runoff responses reflect interaction between precipitation event and antecedent soil moisture. Similar analyses are lacking in intensively managed landscapes where ...
subsurfacedrainage, etc ; agricultural watersheds; data collection; groundwater; hysteresis; nitrate nitrogen; nitrates; runoff; soil profiles; spring; stream flow; streams; weather; Show all 13 Subjects
Abstract:
... Nitrate Concentration–discharge (C-Q) relationshipshave been used to infer nitrate sources, storage, reactions, and transport in watersheds, and to reveal key processes that control runoff chemistry. Yet, studies on long-term nitrate C-Q relationships are limited due to scarce high frequency (e.g., daily) concentration data. In this paper, using a long-term high-frequency dataset (1976-2019) compr ...
... BACKGROUND: Agricultural development of former wetlands has resulted in many headwater streams being sourced by subsurface agricultural drainage systems. Subsurface drainage inputs can significantly influence stream environmental conditions, such as temperature, hydrology, and water chemistry, that drive ecological function. However, ecological assessments of subsurface drainage impacts are rare. ...
M.J. Helmers; L. Abendroth; B. Reinhart; G. Chighladze; L. Pease; L. Bowling; M. Youssef; E. Ghane; L. Ahiablame; L. Brown; N. Fausey; J. Frankenberger; D. Jaynes; K. King; E. Kladivko; K. Nelson; J. Strock
subsurfacedrainage, etc ; data collection; drainage water; nitrate nitrogen; nitrates; spring; water management; Corn Belt region; Midwestern United States; North Carolina; Show all 10 Subjects
Abstract:
... Controlled drainage (CD), sometimes called drainage water management, is a practice whereby the drainage system outflow is managed during specific periods to retain more water in the field. Although CD has been shown to reduce downstream nitrate-N (NO₃⁻-N) load, seasonal patterns have been less consistent which can potentially impact the effectiveness of conservation practices. The main objective ...
subsurfacedrainage, etc ; aeration; agrochemicals; biomass; cultivars; environment; grain yield; leaves; nitrogen; nutrient use efficiency; paddies; panicles; phosphorus; potassium; rice; soil; surface drainage; Show all 17 Subjects
Abstract:
... Increased environmental and economic costs of chemical fertilizers necessitates serious attention to improve nutrient use efficiency. A 3-year field investigation was conducted to assess the influence of different drainage systems on nitrogen (N), phosphorus (P) and potassium (K) use efficiency of two rice cultivars under alternate wetting and drying (AWD) strategy. The drying of the field was don ...
subsurfacedrainage, etc ; Silurian period; agricultural watersheds; anthropogenic activities; atmospheric precipitation; base flow; bedrock; cold season; groundwater; rivers; salinity; solutes; Illinois; Indiana; Ohio; Show all 15 Subjects
Abstract:
... Subsurface drainage modifications are a common practice in agricultural watersheds, especially in poorly drained soils of the American Midwest, yet our understanding of their impact on baseflow generation processes is incomplete. By extension, these same practices can make baseflow vulnerable to salinization. To address these knowledge gaps, a combined geochemical and multiple isotope approach was ...
subsurfacedrainage, etc ; agricultural land; catenas; evaporation; evapotranspiration; groundwater; irrigated farming; irrigation; irrigation water; mineralization; oases; perched water table; salinity; soil salinity; topography; Tunisia; Show all 16 Subjects
Abstract:
... Salinity and waterlogging associated with saline and shallow groundwater are major problems for the sustainability of irrigated agriculture in many Saharan oases located in southern Tunisia. The aim of this paper is to assess the performance of a subsurface drainage system installed in the modern Sagdoud oasis to control the perched water table depth and reclaim the saline waterlogged soils. Water ...
subsurfacedrainage, etc ; climate; cropland; data collection; drainage water; farm management; infrastructure; landscapes; metadata; nitrate nitrogen; rowcrops; soil; tile drainage; vegetation; water quality; North Carolina; Show all 16 Subjects
Abstract:
... This paper describes a multi-site and multi-decadal dataset of artificially drained agricultural fields in seven Midwest states and North Carolina, USA. Thirty-nine research sites provided data on three conservation practices for cropland with subsurface tile drainage: saturated buffers, controlled drainage and drainage water recycling. These practices utilize vegetation and/or infrastructure to m ...
subsurfacedrainage, etc ; ammonium nitrogen; environmental factors; field experimentation; hydrologic cycle; landscapes; nitrate nitrogen; pollutants; pollution control; storms; stormwater; total phosphorus; urban areas; urbanization; water table; Show all 15 Subjects
Abstract:
... Green infrastructures (GIs) have been advocated worldwide to mitigate the negative impact of urbanization on regional hydrological cycle, their functions are closely related to their design features and the local environmental condition. This paper reports a field monitoring study that aimed to investigate how runoff partition in raingardens would affect flow and pollutant retention. A paired fiel ...