Results 211 to 220 of about 490,182 (265)

Contrasting microbial iron metabolism in sediments from oxic and hypoxic estuaries. [PDF]

Front Microbiol
Du R, Xu C, Zhao D, Zeng H, Cheng Y, Tang K, Cai P, Zhang Y.   +7 more
europepmc   +1 more source

Evaluation of a water phantom detector-applicator setup for independent experimental verification of ¹⁰⁶Ru ocular brachytherapy applicators. [PDF]

Med Phys
Dahlander S, Andrássy M, Frömberg D, Persson L, Tedgren ÅC.   +4 more
europepmc   +1 more source

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Estimation of water table depth using DUALEM-2 system

Computers and Electronics in Agriculture, 2020
Abstract Most of the agricultural fields are generally irrigated or drained uniformly without considering the spatial and temporal variation in water table depth (WTD). Investigating WTD is important for scheduling irrigation, drainage system designs and water balance models. The objective of this study was to develop a software interface to estimate
Aitazaz Ahsan Farooque, Fahad S. Khan, Qamar Uz Zaman, T. J. Easu, Arnold W. Schumann   +4 more
openaire   +1 more source

Drainage Rates and Water-Table Depths

Journal of the Irrigation and Drainage Division, 1978
Precipitation and evapotranspiration data for 27 years from three stations in the Ottawa and St. Lawrence Lowlands have been used together with a hydrologic model of the drainage process to obtain the duration of particular water table heights to be expected.
Sie-Tan Chieng, Nader Foroud, Robert S. Broughton   +2 more
openaire   +1 more source

Effect of Water Table Depth on Nutrient Concentrations Below the Water Table in a Spodosol

Water, Air, & Soil Pollution, 2018
Water table depth manipulations as implemented in sugarcane fields of Southwestern Florida, USA, were hypothesized to influence the nutrient concentrations below the water table. Concentrations of phosphorus (P), potassium (K), nitrogen (N), and bromide (Br−) were monitored above and below the water table using a column leaching experiment.
A. Muwamba, P. Nkedi-Kizza, K. T. Morgan
openaire   +1 more source

Evapotranspiration of Lettuce in Relation to Water Table Depth

Transactions of the ASAE, 1984
ABSTRACT STUDIES of the evapotranspiration (ET) and water use efficiency for lettuce in relation to water table depth were conducted in nine lysimeters on organic soil. The water tables were controlled at 45, 60, and 85 cm with three replications. Two crops of lettuce were raised.
null S. F. Shih, null G. S. Rahi
openaire   +1 more source

MAPPING WATER TABLE DEPTH BY ELECTROMAGNETIC INDUCTION

Applied Engineering in Agriculture, 2003
Currently most citrus groves are managed uniformly in large blocks, despite significant spatial variability in soil and water properties that influences the long-term viability of perennial citrus trees in Florida’s poorly drained Southern Flatwood soils.
null A. W. Schumann, null Q. U. Zaman
openaire   +1 more source

Managing water table depth thresholds for potato subirrigation

Agricultural Water Management, 2022
Abstract Subirrigation requires precise control of the water table level to provide adequate soil water content (SWC) for promoting plant growth. Optimizing water table level management has been shown to improve soil aeration, reduce N-leaching, and reduce risk of crop losses. The objectives of this study were to: i) assess if water table level and N-
Libby R. Rens, Lincoln Zotarelli, Andre Luiz Biscaia Ribeiro da Silva, Camila J.B. Ferreira, Cássio A. Tormena, Diane L. Rowland, Kelly T. Morgan   +6 more
openaire   +1 more source

The influence of seepage on the depth of water tables in drainage

Journal of Hydrology, 1984
Abstract A theory has been developed that describes the depth of the water table in the case of a soil underlain by an artesian aquifer which is drained by means of a subsoil drainage system. The theory is based on two-dimensional groundwater flow and solutions were obtained for both steady- and nonsteady-state conditions.
J.G. Wesseling, J. Wesseling
openaire   +1 more source