Matches in SemOpenAlex for { <https://semopenalex.org/work/W110858210> ?p ?o ?g. }
Showing items 1 to 97 of
97
with 100 items per page.
- W110858210 endingPage "372" @default.
- W110858210 startingPage "363" @default.
- W110858210 abstract "In nonirrigated areas, downward flow or deep percolation rates (Darcy flux) in the vadose zone typically range from approximately 1mm/yr or less for semiarid or arid areas to approximately 500 mm/yr or more for humid areas. Irrigated areas in dry climates can have deep percolation rates as a few cm/yr to a few dm/yr for relative efficient irrigation systems and as much as 1 or 3 m/yr for inefficient irrigations systems. Assuming an NO3-N leaching of 50 kg/ha/yr (approximately one-fourth of the fertilizer N applied), these fluxes give calculated NO3-N concentrations in vadose zone water of 10 to 100 mg/1. which agree with values found in practice. To prevent high NO3-N concentrations in vadose zone water below irrigated areas, best management practices for irrigation must be combined with best management practices for nitrogen fertilizer Rates of downward movement of nitrate in the vadose zone are equal to the pose velocities of the water. Theoretically, these are calculated as Darcy flux divided by volumetric water content. Because of preferential flow, however, actual velocities can be considerably higher, i.e., 2 to 5 times higher for soils without obvious macropores, and as much as 20 times higher or more for soils with cracks, rootholes, wormholes, etc. Downward velocities of nitrate in the vadose zone below agricultural land may range from a few dm/yr to a few m/yr. Longitudinal dispersion may be influenced more by spatial variability of infiltration rates than by hydrodynamic effects. Nitrate concentrations in water pumped from the aquifer eventually can approach those in the water from the vadose zone. Where nitrate concentrations exceed the maximum limit for drinking, treatment of the water may be necessary. Of the various techniques, the method that combines anion exchange and denitrification holds promise." @default.
- W110858210 created "2016-06-24" @default.
- W110858210 creator A5075954236 @default.
- W110858210 date "1989-01-01" @default.
- W110858210 modified "2023-09-25" @default.
- W110858210 title "Linkages with Ground Water" @default.
- W110858210 cites W1494362629 @default.
- W110858210 cites W1924316389 @default.
- W110858210 cites W1980440523 @default.
- W110858210 cites W1982767919 @default.
- W110858210 cites W1986257451 @default.
- W110858210 cites W1987478017 @default.
- W110858210 cites W2000243042 @default.
- W110858210 cites W2000250974 @default.
- W110858210 cites W2008012658 @default.
- W110858210 cites W2013884497 @default.
- W110858210 cites W2014566515 @default.
- W110858210 cites W2023549127 @default.
- W110858210 cites W2025032048 @default.
- W110858210 cites W2038225854 @default.
- W110858210 cites W2063726393 @default.
- W110858210 cites W2086679121 @default.
- W110858210 cites W2093486158 @default.
- W110858210 cites W2151061967 @default.
- W110858210 cites W2254047750 @default.
- W110858210 cites W2761301778 @default.
- W110858210 cites W3016186384 @default.
- W110858210 doi "https://doi.org/10.1016/b978-0-444-87393-4.50018-6" @default.
- W110858210 hasPublicationYear "1989" @default.
- W110858210 type Work @default.
- W110858210 sameAs 110858210 @default.
- W110858210 citedByCount "1" @default.
- W110858210 crossrefType "book-chapter" @default.
- W110858210 hasAuthorship W110858210A5075954236 @default.
- W110858210 hasConcept C127313418 @default.
- W110858210 hasConcept C153294291 @default.
- W110858210 hasConcept C153400128 @default.
- W110858210 hasConcept C159390177 @default.
- W110858210 hasConcept C159750122 @default.
- W110858210 hasConcept C174091901 @default.
- W110858210 hasConcept C178790620 @default.
- W110858210 hasConcept C185592680 @default.
- W110858210 hasConcept C187320778 @default.
- W110858210 hasConcept C191440113 @default.
- W110858210 hasConcept C205649164 @default.
- W110858210 hasConcept C2776384668 @default.
- W110858210 hasConcept C2988574769 @default.
- W110858210 hasConcept C35588792 @default.
- W110858210 hasConcept C39432304 @default.
- W110858210 hasConcept C6557445 @default.
- W110858210 hasConcept C75622301 @default.
- W110858210 hasConcept C76177295 @default.
- W110858210 hasConcept C76886044 @default.
- W110858210 hasConcept C86803240 @default.
- W110858210 hasConcept C88862950 @default.
- W110858210 hasConcept C90982505 @default.
- W110858210 hasConceptScore W110858210C127313418 @default.
- W110858210 hasConceptScore W110858210C153294291 @default.
- W110858210 hasConceptScore W110858210C153400128 @default.
- W110858210 hasConceptScore W110858210C159390177 @default.
- W110858210 hasConceptScore W110858210C159750122 @default.
- W110858210 hasConceptScore W110858210C174091901 @default.
- W110858210 hasConceptScore W110858210C178790620 @default.
- W110858210 hasConceptScore W110858210C185592680 @default.
- W110858210 hasConceptScore W110858210C187320778 @default.
- W110858210 hasConceptScore W110858210C191440113 @default.
- W110858210 hasConceptScore W110858210C205649164 @default.
- W110858210 hasConceptScore W110858210C2776384668 @default.
- W110858210 hasConceptScore W110858210C2988574769 @default.
- W110858210 hasConceptScore W110858210C35588792 @default.
- W110858210 hasConceptScore W110858210C39432304 @default.
- W110858210 hasConceptScore W110858210C6557445 @default.
- W110858210 hasConceptScore W110858210C75622301 @default.
- W110858210 hasConceptScore W110858210C76177295 @default.
- W110858210 hasConceptScore W110858210C76886044 @default.
- W110858210 hasConceptScore W110858210C86803240 @default.
- W110858210 hasConceptScore W110858210C88862950 @default.
- W110858210 hasConceptScore W110858210C90982505 @default.
- W110858210 hasLocation W1108582101 @default.
- W110858210 hasOpenAccess W110858210 @default.
- W110858210 hasPrimaryLocation W1108582101 @default.
- W110858210 hasRelatedWork W1984585752 @default.
- W110858210 hasRelatedWork W1994473717 @default.
- W110858210 hasRelatedWork W2014343772 @default.
- W110858210 hasRelatedWork W2042118649 @default.
- W110858210 hasRelatedWork W2112812814 @default.
- W110858210 hasRelatedWork W2114369319 @default.
- W110858210 hasRelatedWork W2213022180 @default.
- W110858210 hasRelatedWork W4246415992 @default.
- W110858210 hasRelatedWork W4254189444 @default.
- W110858210 hasRelatedWork W795975668 @default.
- W110858210 isParatext "false" @default.
- W110858210 isRetracted "false" @default.
- W110858210 magId "110858210" @default.
- W110858210 workType "book-chapter" @default.