Matches in SemOpenAlex for { <https://semopenalex.org/work/W1965895914> ?p ?o ?g. }
Showing items 1 to 94 of
94
with 100 items per page.
- W1965895914 endingPage "125" @default.
- W1965895914 startingPage "115" @default.
- W1965895914 abstract "In tilled soils, hydraulic properties required as input to process-based water balance models may undergo temporal changes during the cropping cycle, particularly as a result of raindrop impact. This study was conducted to investigate the effect of raindrop induced aggregate breakdown on changes to soil hydraulic properties in an Alfisol sown to wheat under minimum tillage and conventional cultivation at Kapunda, South Australia. Unsaturated hydraulic properties of the sandy loam A horizon were measured at two stages in the cropping cycle during Year 7 of the trial using tension infiltrometers. The surface was also subjected to simulated rainfall and the hydraulic properties re-measured after the soil water content had returned to the initial pre-rain value. Results showed that a pre-seeding, the total porosity was greater under conventional cultivation (CC) (0.56 m3 m−3), that under direct drilling (DD) (0.48 m3 m−3). Much of the additional porosity under CC was restricted to large voids that were air filled at a matric head of just −20 mm. In consequence, at this supply potential, the hydraulic conductivity was significantly greater under DD (35.6 mm h−1) compared with CC (15.3 mm h−1). The sorptivity also followed a similar trend (11.2 mm per 30 min under CC compared with 18.4 mm per 30 min under DD). Later in the cropping cycle, the hydraulic properties displayed no significant differences between treatments. This was attributed to consolidation of the conventionally cultivated seedbed under natural rainfall, with total porosity decreasing from 0.56 at pre-seeding to 0.48 at post-harvest. Simulated raindrop impact had no effect on hydraulic conductivity or sorptivity measured at a supply potential of −40 mm, but at a supply potential of −20 mm the measured hydraulic conductivity was reduced to 4.5 mm h−1 at pre-seeding and 8.6 mm h−1 at post-harvest. These values were similar to the pre-rainfall simulation measurements at −40 mm and suggest that the effect of aggregate disruption from raindrop impact was predominantly restricted to pores of equivalent radius >0.75 mm. Time to incipient ponding was predicted adequately using soil properties obtained at a supply potential of −40 mm prior to rainfall, primarily because infiltration of intense rainfall into dry soil was dominated by sorptivity. It is concluded that tension infiltrometers provide a rapid and practical method for surveying temporal changes to surface hydraulic properties and that at this site there is no sustained influence of tillage on the measured hydraulic properties." @default.
- W1965895914 created "2016-06-24" @default.
- W1965895914 creator A5008066114 @default.
- W1965895914 creator A5034451181 @default.
- W1965895914 date "1993-04-01" @default.
- W1965895914 modified "2023-10-06" @default.
- W1965895914 title "Effect of cultivation and raindrop impact on the surface hydraulic properties of an Alfisol under wheat" @default.
- W1965895914 cites W1991434543 @default.
- W1965895914 cites W1993108384 @default.
- W1965895914 cites W2003452535 @default.
- W1965895914 cites W2014103649 @default.
- W1965895914 cites W2018827031 @default.
- W1965895914 cites W2022384194 @default.
- W1965895914 cites W2038085338 @default.
- W1965895914 cites W2038537906 @default.
- W1965895914 cites W2042407314 @default.
- W1965895914 cites W2045607020 @default.
- W1965895914 cites W2046714320 @default.
- W1965895914 cites W2047943772 @default.
- W1965895914 cites W2056134831 @default.
- W1965895914 cites W2068402105 @default.
- W1965895914 cites W2075634724 @default.
- W1965895914 cites W2089183584 @default.
- W1965895914 cites W2106611436 @default.
- W1965895914 doi "https://doi.org/10.1016/0167-1987(93)90038-q" @default.
- W1965895914 hasPublicationYear "1993" @default.
- W1965895914 type Work @default.
- W1965895914 sameAs 1965895914 @default.
- W1965895914 citedByCount "39" @default.
- W1965895914 countsByYear W19658959142012 @default.
- W1965895914 countsByYear W19658959142013 @default.
- W1965895914 countsByYear W19658959142014 @default.
- W1965895914 countsByYear W19658959142015 @default.
- W1965895914 countsByYear W19658959142016 @default.
- W1965895914 countsByYear W19658959142017 @default.
- W1965895914 countsByYear W19658959142019 @default.
- W1965895914 countsByYear W19658959142020 @default.
- W1965895914 countsByYear W19658959142021 @default.
- W1965895914 countsByYear W19658959142022 @default.
- W1965895914 countsByYear W19658959142023 @default.
- W1965895914 crossrefType "journal-article" @default.
- W1965895914 hasAuthorship W1965895914A5008066114 @default.
- W1965895914 hasAuthorship W1965895914A5034451181 @default.
- W1965895914 hasConcept C113578266 @default.
- W1965895914 hasConcept C127313418 @default.
- W1965895914 hasConcept C159390177 @default.
- W1965895914 hasConcept C159750122 @default.
- W1965895914 hasConcept C16397148 @default.
- W1965895914 hasConcept C168741863 @default.
- W1965895914 hasConcept C187320778 @default.
- W1965895914 hasConcept C2777364628 @default.
- W1965895914 hasConcept C2779656465 @default.
- W1965895914 hasConcept C2781410044 @default.
- W1965895914 hasConcept C39432304 @default.
- W1965895914 hasConcept C63184880 @default.
- W1965895914 hasConcept C6557445 @default.
- W1965895914 hasConcept C6648577 @default.
- W1965895914 hasConcept C86803240 @default.
- W1965895914 hasConceptScore W1965895914C113578266 @default.
- W1965895914 hasConceptScore W1965895914C127313418 @default.
- W1965895914 hasConceptScore W1965895914C159390177 @default.
- W1965895914 hasConceptScore W1965895914C159750122 @default.
- W1965895914 hasConceptScore W1965895914C16397148 @default.
- W1965895914 hasConceptScore W1965895914C168741863 @default.
- W1965895914 hasConceptScore W1965895914C187320778 @default.
- W1965895914 hasConceptScore W1965895914C2777364628 @default.
- W1965895914 hasConceptScore W1965895914C2779656465 @default.
- W1965895914 hasConceptScore W1965895914C2781410044 @default.
- W1965895914 hasConceptScore W1965895914C39432304 @default.
- W1965895914 hasConceptScore W1965895914C63184880 @default.
- W1965895914 hasConceptScore W1965895914C6557445 @default.
- W1965895914 hasConceptScore W1965895914C6648577 @default.
- W1965895914 hasConceptScore W1965895914C86803240 @default.
- W1965895914 hasIssue "2" @default.
- W1965895914 hasLocation W19658959141 @default.
- W1965895914 hasOpenAccess W1965895914 @default.
- W1965895914 hasPrimaryLocation W19658959141 @default.
- W1965895914 hasRelatedWork W1569224558 @default.
- W1965895914 hasRelatedWork W1577079516 @default.
- W1965895914 hasRelatedWork W1997490195 @default.
- W1965895914 hasRelatedWork W1999820419 @default.
- W1965895914 hasRelatedWork W2013252734 @default.
- W1965895914 hasRelatedWork W2090534628 @default.
- W1965895914 hasRelatedWork W2090782501 @default.
- W1965895914 hasRelatedWork W2111049762 @default.
- W1965895914 hasRelatedWork W2337805581 @default.
- W1965895914 hasRelatedWork W2911780317 @default.
- W1965895914 hasVolume "26" @default.
- W1965895914 isParatext "false" @default.
- W1965895914 isRetracted "false" @default.
- W1965895914 magId "1965895914" @default.
- W1965895914 workType "article" @default.