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- Author:
- Timothy M. Dellapenna; Christena Hoelscher; Lisa Hill; Lindsay Critides; Victoria Salgado (Bartlett); Mason Bell; Mohammad E. Al Mukaimi; Jaibi Du; Kyeong Park; Anthony H. Knap
- Source:
- Estuaries and coasts 2022 v.45 no.2 pp. 428-444
- ISSN:
- 1559-2723
- Subject:
- bulk density; coasts; estuaries; hurricanes; industrial wastewater; lakes; mercury; sediment contamination; sediments; subsidence; suspended sediment; urbanization; water content; Gulf of Mexico; Texas
- Abstract:
- ... Hurricane Harvey (Harvey) struck the Texas coast 25–27 August, 2017, and produced massive flooding of the Galveston Bay tributaries. The slow release of floodwaters from the Barker and Addicks Reservoirs, west of Houston, produced a 48-day flood across metro-Houston through via Buffalo Bayou, through the San Jacinto Estuary (SJE), before flowing into Galveston Bay. To quantify the thickness and ma ...
- DOI:
- 10.1007/s12237-021-00990-7
- https://doi.org/10.1007/s12237-021-00990-7
- Author:
- Prabhu Govindasamy; Jake Mowrer; Nithya Rajan; Tony Provin; Frank Hons; Muthukumar Bagavathiannan
- Source:
- Archiv für Acker- und Pflanzenbau und Bodenkunde 2021 v.67 no.2 pp. 234-244
- ISSN:
- 1476-3567
- Subject:
- bulk density; conventional tillage; correlation; depth; grain sorghum; no-tillage; plant available water; porosity; resistance to penetration; soil depth; volumetric water content; water holding capacity; Texas
- Abstract:
- ... Experiments were conducted to evaluate the impact of 36 years of no-tillage (NT), compared to conventional-tillage (CT), on soil physical properties in a continuous grain sorghum experiment. Results revealed that long-term tillage treatments had minimal impact on bulk density (BD), total porosity (TP), air-filled porosity (AFP), water-filled pore space (WFPS), and volumetric water content (Θv). Ho ...
- DOI:
- 10.1080/03650340.2020.1720914
- https://doi.org/10.1080/03650340.2020.1720914
- Author:
- Dianna K. Bagnall; Cristine L.S. Morgan
- Source:
- Soil & tillage research 2021 v.208 pp. 104893
- ISSN:
- 0167-1987
- Subject:
- aggregate stability; bulk density; cluster analysis; conventional tillage; ecosystems; factor analysis; farms; management systems; mobile telephones; no-tillage; organic carbon; perennial grasses; research; saturated hydraulic conductivity; sediments; soil quality; soil structure; stakeholders; watersheds; Brazos River; Texas
- Abstract:
- ... Adoption of no-till (NT) is low in the Lower and Middle Brazos River Watershed of Texas, leaving soil vulnerable to erosion, exacerbating flooding, and contributing to high nutrient and sediment levels in surface waters. To investigate the impact of NT on soil structure and hydraulic function in the region, we measured saturated hydraulic conductivity, organic carbon, bulk density, slaking index o ...
- DOI:
- 10.1016/j.still.2020.104893
- CHORUS:
- 10.1016/j.still.2020.104893
- https://doi.org/10.1016/j.still.2020.104893
4. Soil Carbon and Nitrogen Storage in Natural and Prop-Scarred Thalassia Testudinum Seagrass Meadows
- Author:
- Rachel N. Arney; Alison K. Shepherd; Heather D. Alexander; Abdullah F. Rahman
- Source:
- Estuaries and coasts 2021 v.44 no.1 pp. 178-188
- ISSN:
- 1559-2723
- Subject:
- Thalassia testudinum; anthropogenic stressors; boats; bulk density; chronosequences; climate change; databases; hypersalinity; nitrogen; organic carbon; propellers; seagrasses; soil carbon; Texas
- Abstract:
- ... Seagrass meadows are carbon (C) sinks and nitrogen (N)-limited ecosystems that experience degradation from climate change and anthropogenic stressors, including prop-scarring disturbances by boating vessels. To better understand the variability in C and N pools of undisturbed seagrass soils and the recovery of these pools following boat propeller scarring, we quantified organic carbon (Cₒᵣg) and N ...
- DOI:
- 10.1007/s12237-020-00765-6
- https://doi.org/10.1007/s12237-020-00765-6
- Author:
- Manish Sapkota; Joseph Young; Cade Coldren; Lindsey Slaughter; Scott Longing
- Source:
- Urban forestry & urban greening 2020 v.56 pp. 126847
- ISSN:
- 1618-8667
- Subject:
- bulk density; calcium; carbon sequestration; ecosystem services; iron; landscapes; lawns and turf; magnesium; pH; phosphorus; potassium; regression analysis; semiarid zones; soil nutrients; soil organic carbon; soil sampling; soil texture; total nitrogen; turf grasses; urban areas; urban soils; Texas
- Abstract:
- ... Soil organic matter (SOM) accumulation and carbon (C) sequestration are ecosystem services (ESs) provided by urban landscapes that are dominated by continuous grass cover, such as residential lawns. Organic matter and C sequestration are expected to increase over time, but few studies have determined potential soil organic carbon (SOC) accumulation from residential lawns in semiarid climates. The ...
- DOI:
- 10.1016/j.ufug.2020.126847
- https://doi.org/10.1016/j.ufug.2020.126847
- Author:
- Kathryn L. Vanderburg; Tim J. Steffens; David G. Lust; Marty B. Rhoades; Brock C. Blaser; Kim Peters; Matthew J. Ham
- Source:
- Rangeland ecology & management 2020 v.73 no.3 pp. 452-461
- ISSN:
- 1550-7424
- Subject:
- Bothriochloa ischaemum; Leptochloa dubia; Panicum coloratum; administrative management; body weight; bulk density; canopy; cropland; hydrology; plant establishment; porosity; rain; rangelands; seedlings; soil compaction; soil density; species recruitment; warm season; Texas
- Abstract:
- ... A field study in Randall County, Texas, was conducted to determine how soil bulk density and plant cover change over time in response to deferment following a high-density, high-intensity, short-term grazing/trampling event. Green Sprangletop (Leptocloa dubia Kunth.) and Kleingrass (Panicum coloratum L.) were broadcasted at 4.5 kg ha⁻¹ pure live seed (PLS) on former cropland that had a partial sta ...
- DOI:
- 10.1016/j.rama.2020.01.001
- https://doi.org/10.1016/j.rama.2020.01.001
- Author:
- P. B. DeLaune; P. Mubvumba; K. L. Lewis; J. W. Keeling
- Source:
- Soil Science Society of America journal 2019 v.83 no.5 pp. 1451-1458
- ISSN:
- 0361-5995
- Subject:
- biogeochemical cycles; bulk density; conventional tillage; cotton; cover crops; cropping systems; growing season; nitrate nitrogen; no-tillage; resistance to penetration; rye; semiarid zones; soil compaction; soil function; soil organic carbon; soil properties; water conservation; High Plains (United States); Texas
- Abstract:
- ... Core Ideas Soil nitrate was lower due to a cereal rye cover crop during the active growing season. Infiltration was greater for no‐till with rye cover crop than conventional tillage. After 17 years, no‐till with rye had greater soil organic C than conventional tillage in surface layers. Soil organic C did not differ between no‐till with rye and conventional tillage for subsurface layers. No‐till w ...
- DOI:
- 10.2136/sssaj2019.03.0069
- https://doi.org/10.2136/sssaj2019.03.0069
- Author:
- Todd G. Caldwell; Tara Bongiovanni; Michael H. Cosh; Thomas J. Jackson; Andreas Colliander; Charles J. Abolt; Richard Casteel; Toti Larson; Bridget R. Scanlon; Michael H. Young
- Source:
- Vadose zone journal 2019 v.18 no.1 pp. 1-20
- ISSN:
- 1539-1663
- Subject:
- algorithms; automation; bulk density; carbon; data collection; ecotones; model validation; monitoring; particle size; quality control; rangelands; remote sensing; satellites; soil water; soil water content; spatial variation; temporal variation; vadose zone; Texas
- Abstract:
- ... CORE IDEAS: TxSON is a Core Cal/Val Site for the NASA SMAP, SMOS, and Sentinel programs. TxSON consists of 40 in situ locations nested within a 36‐km EASE2 grid cell. Locations monitor soil moisture, temperature, and precipitation at 5, 10, 20, and 50 cm. Hourly, quality‐controlled data from 2015 to 2018 are available. The spatiotemporal variability of soil water content (SWC) at the remote sensin ...
- DOI:
- 10.2136/vzj2019.04.0034
- https://doi.org/10.2136/vzj2019.04.0034
- Author:
- Jamie L. Foster; Matthew E. Bean; Cristine Morgan; Gaylon Morgan; Rabi Mohtar; Juan Landivar; Mac Young
- Source:
- Agronomy journal 2018 v.110 no.4 pp. 1572-1579
- ISSN:
- 0002-1962
- Subject:
- Gossypium hirsutum; Sorghum bicolor; Vertisols; agronomy; arid lands; bulk density; conventional tillage; cotton; crop yield; drought; farm income; no-tillage; soil degradation; soil water; Texas
- Abstract:
- ... Cotton and sorghum yield were more dependent on precipitation than tillage management. No‐till produced a greater cotton and sorghum crop yield in some years. Economic analyses indicate a reduction of costs with no‐till versus conventional practices. Conventional tillage (CT) cropping systems in semiarid regions of south Texas are associated with soil degradation and increasing fuel costs. The obj ...
- DOI:
- 10.2134/agronj2017.12.0706
- https://doi.org/10.2134/agronj2017.12.0706
- Author:
- Heather D. Watson; Haly L. Neely; Cristine L.S. Morgan; Kevin J. McInnes; Christine C. Molling
- Source:
- Geoderma 2017 v.295 pp. 34-40
- ISSN:
- 0016-7061
- Subject:
- Vertisols; bulk density; correlation; electrical conductivity; landscapes; plowing; prairies; soil properties; soil sampling; soil solution; soil surveys; variance; water content; Texas
- Abstract:
- ... Proximal sensing, such as electromagnetic induction, has been used to map the spatial distribution of soil properties; however, the response of these instruments to short-interval variability associated with Vertisols has not been studied. Meter-scale circular landscape features called gilgai, which are associated with surface and subsurface variability, make sampling these soils difficult, especi ...
- DOI:
- 10.1016/j.geoderma.2017.01.029
- https://doi.org/10.1016/j.geoderma.2017.01.029
- Author:
- Daniel R. Fuka; Amy S. Collick; Peter J.A. Kleinman; Daniel A. Auerbach; R. Daren Harmel; Zachary M. Easton
- Source:
- Hydrological processes 2016 v.30 no.24 pp. 4633-4643
- ISSN:
- 0885-6087
- Subject:
- C horizons; Soil and Water Assessment Tool model; basins; bulk density; databases; grassland soils; model validation; porosity; prediction; runoff; soil formation; soil surveys; soil water; stream channels; texture; topography; watersheds; wilting point; Texas
- Abstract:
- ... Topography exerts critical controls on many hydrologic, geomorphologic and biophysical processes. However, many watershed modelling systems use topographic data only to define basin boundaries and stream channels, neglecting opportunities to account for topographic controls on processes such as soil genesis, soil moisture distributions and hydrological response. Here, we demonstrate a method that ...
- DOI:
- 10.1002/hyp.10899
- https://doi.org/10.1002/hyp.10899
- Author:
- Ranjith P. Udawatta; Clark J. Gantzer; Stephen H. Anderson; Ann M. Rossi; Robert C. Graham; Richard A. Ketcham
- Source:
- Soil science 2012 v.177 no.8 pp. 506-516
- ISSN:
- 0038-075X
- Subject:
- bulk density; chronosequences; clods; computed tomography; computer software; ecosystems; geometry; granodiorite; hydrology; microstructure; mountains; porosity; weathering; California; Texas
- Abstract:
- ... Weathering produces porosity that influences rocks’ hydrologic properties and thus affects ecosystem processes. The objective of this research was to quantify three-dimensional geometrical pore parameters and characterize microstructure differences as rock weathers. Three granodiorite rock fragments (clasts) and two soil clods sampled from a moraine chronosequence in the eastern Sierra Nevada, Cal ...
- DOI:
- 10.1097/SS.0b013e31825f20c6
- https://doi.org/10.1097/SS.0b013e31825f20c6
- Author:
- Kaiguang Zhao; Sorin Popescu; Xuelian Meng; Yong Pang; Muge Agca
- Source:
- Remote sensing of environment 2011 v.115 no.8 pp. 1978-1996
- ISSN:
- 0034-4257
- Subject:
- linear models; lidar; forest canopy; scanners; uncertainty; fuels (fire ecology); aboveground biomass; bulk density; leaf area index; belowground biomass; regression analysis; support vector machines; remote sensing; case studies; stand basal area; prediction; forests; Texas
- Abstract:
- ... A lack of reliable observations for canopy science research is being partly overcome by the gradual use of lidar remote sensing. This study aims to improve lidar-based canopy characterization with airborne laser scanners through the combined use of lidar composite metrics and machine learning models. Our so-called composite metrics comprise a relatively large number of lidar predictors that tend t ...
- DOI:
- 10.1016/j.rse.2011.04.001
- https://doi.org/10.1016/j.rse.2011.04.001
- Author:
- W.R. Teague; S.L. Dowhower; S.A. Baker; N. Haile; P.B. DeLaune; D.M. Conover
- Source:
- Agriculture, ecosystems & environment 2011 v.141 no.3-4 pp. 310-322
- ISSN:
- 0167-8809
- Subject:
- ranching; grasses; stocking rate; soil penetration resistance; cation exchange capacity; soil organic matter; chemical substances; bulk density; nutrient retention; water holding capacity; growing season; grazing intensity; aggregate stability; prairies; forbs; soil aggregates; Texas
- Abstract:
- ... To assess whether adaptive management using multi-paddock grazing is superior to continuous grazing regarding conservation and restoration of resources we evaluated the impact of multi-paddock (MP) grazing at a high stocking rate compared to light continuous (LC) and heavy continuous (HC) grazing on neighboring commercial ranches in each of three proximate counties in north Texas tall grass prairi ...
- DOI:
- 10.1016/j.agee.2011.03.009
- https://doi.org/10.1016/j.agee.2011.03.009
- Author:
- Sally D. Logsdon; Timothy R. Green; Jim V. Bonta; Mark S. Seyfried; Steven R. Evett
- Source:
- Soil science 2010 v.175 no.12 pp. 573-578
- ISSN:
- 0038-075X
- Subject:
- mathematical models; electrical conductivity; thermal conductivity; clay soils; soil water content; soil mineralogy; silty soils; equations; bulk density; particle size distribution; soil density; Iowa; Texas; Idaho; Ohio; Colorado
- Abstract:
- ... The arrangement of soil particles, particle size, mineralogy, solute concentration, and bulk density affects electrical (σ) and thermal (λ) conductivities, which are key properties for estimating soil physical states, subsurface water and energy balances, and land-atmosphere interactions. The purpose of this study was to compare how σ and λ change as a function of water content for soils under dif ...
- Handle:
- 10113/48885
- DOI:
- 10.1097/SS.0b013e3181fce006
- https://doi.org/10.1097/SS.0b013e3181fce006
16. Holocene sediment accretion in the Trinity River delta, Texas, in relation to modern fluvial input
- Author:
- Slattery, Michael C.; Todd, Lee M.; Phillips, Jonathan D.; Breyer, John A.
- Source:
- Journal of soils and sediments 2010 v.10 no.4 pp. 640-651
- ISSN:
- 1439-0108
- Subject:
- bulk density; color; lakes; marshes; mass spectrometry; radiocarbon dating; river deltas; rivers; sea level; sediments; subsidence; surface area; texture; water content; Texas
- Abstract:
- ... Purpose This study uses sediment cores to quantify Holocene sedimentation rates in the Trinity River delta, Texas. An important question is whether modern fluvial sediment input from the Trinity River is adequate to sustain sedimentation in the delta, thereby combating subsidence and further wetland loss. Our objective was to quantify sedimentation rates within the delta in order to assess whether ...
- DOI:
- 10.1007/s11368-010-0232-4
- https://doi.org/10.1007/s11368-010-0232-4
- Author:
- Schwartz, R.C.; Evett, S.R.; Unger, P.W.
- Source:
- Geoderma 2003 v.116 no.1-2 pp. 47-60
- Subject:
- land use change; saturated hydraulic conductivity; Conservation Reserve Program; agricultural soils; soil pore system; agricultural land; tillage; A horizons; unsaturated hydraulic conductivity; porosity; bulk density; infiltration (hydrology); grasslands; soil water characteristic; B horizons; grassland soils; Texas
- Abstract:
- ... Conversion of cropland to perennial grasses will, over time, produce changes in soil hydraulic properties. The objective of this study was to characterize and compare hydraulic properties of fine-textured soils on adjacent native grassland, recently tilled cropland, and reestablished grassland in the Conservation Reserve Program (CRP) at three locations in the Southern Great Plains. A tension infi ...
- Handle:
- 10113/2375
- DOI:
- 10.1016/S0016-7061(03)00093-4
- https://doi.org/10.1016/S0016-7061(03)00093-4
- Author:
- Baumhardt, R.L.; Jones, O.R.
- Source:
- Soil & tillage research 2002 v.65 no.1 pp. 19-27
- ISSN:
- 0167-1987
- Subject:
- no-tillage; soil water content; resistance to penetration; clay loam soils; stubble; stubble tillage; fallow; bulk density; rain; Triticum aestivum; stubble mulching; Sorghum bicolor; crop rotation; Texas
- Abstract:
- ... Dryland winter wheat (Triticum aestivum L.) and grain sorghum [Sorghum bicolor (L.) Moench] are often grown on the semiarid North American Great Plains using the wheat-sorghum-fallow (WSF) crop rotation. When used with WSF, no-tillage (NT) and stubblemulch tillage (SM) residue management reduce evaporation and increase yield, but more runoff occurs with NT compared to SM. Our objectives were to de ...
- Handle:
- 10113/1904
- Author:
- Franzluebbers, A.J.
- Source:
- Soil & tillage research 2002 v.66 no.2 pp. 95-106
- ISSN:
- 0167-1987
- Subject:
- no-tillage; soil properties; soil depth; carbon; soil aggregates; plowing; bulk density; soil microorganisms; soil fertility; mineralization; conventional tillage; soil organic matter; spatial variation; biomass; nitrogen; organic nitrogen compounds; Alberta; Texas; British Columbia; Georgia
- Abstract:
- ... Soil quality is a concept based on the premise that management can deteriorate, stabilize, or improve soil ecosystem functions. It is hypothesized that the degree of stratification of soil organic C and N pools with soil depth, expressed as a ratio, could indicate soil quality or soil ecosystem functioning, because surface organic matter is essential to erosion control, water infiltration, and con ...
- Handle:
- 10113/9929
- DOI:
- 10.1016/S0167-1987(02)00018-1
- https://doi.org/10.1016/S0167-1987(02)00018-1
20. Alternative and Opportunity Dryland Crops and Related Soil Conditions in the Southern Great Plains
- Author:
- Paul W. Unger
- Source:
- Agronomy journal 2001 v.93 no.1 pp. 216-226
- ISSN:
- 0002-1962
- Subject:
- water conservation; diameter; soil water content; Sorghum bicolor; bulk density; crop yield; forage; Triticum aestivum; soil fertility; Brassica napus; triticale; Hibiscus cannabinus; protein content; crop rotation; mortality; soil aggregates; Texas
- Abstract:
- ... Dryland winter wheat (Triticum aestivum L.) and grain sorghum [Sorghum bicolor (L.) Moench] yield favorably when rotated or grown continually in the southern Great Plains, but improved water conservation practices make other systems possible for these crops. Also, farmers can now produce other crops without losing government payments. Winter wheat, grain sorghum, and opportunity crop performance; ...
- Handle:
- 10113/1944
- DOI:
- 10.2134/agronj2001.931216x
- https://doi.org/10.2134/agronj2001.931216x
- Author:
- Rostagno, C.M.; Sosebee, R.B.
- Source:
- Arid land research and management 2001 v.15 no.3 pp. 233-244
- ISSN:
- 1532-4982
- Subject:
- runoff; shrublands; clay fraction; application rate; soil organic matter; sewage sludge; soil degradation; bulk density; soil depth; topsoil; rain; duration; arid soils; grasslands; Texas
- DOI:
- 10.1080/15324980152119793
- https://doi.org/10.1080/15324980152119793
- Author:
- Potter, K.N.; Torbert, H.A.; Jones, O.R.; Matocha, J.E.; Morrison, J.E. Jr.; Unger, P.W.
- Source:
- Soil & tillage research 1998 v.47 no.3-4 pp. 309-321
- Subject:
- soil organic carbon; spatial distribution; crop residue management; crop rotation; climatic factors; no-tillage; minimum tillage; stubble mulching; temperature; agricultural soils; carbon sequestration; fertilizer application; application rate; soil fertility; long term experiments; sandy clay loam soils; clay loam soils; bulk density; geographical variation; Texas
- Abstract:
- ... Soil organic carbon (SOC) distribution is altered by residue management practices, but the effect on total C mass is not well understood, especially in warm regions. The objective of this study was to determine the effect of residue management practices on SOC distribution and amount across an 1100 km transect (northwest to southeast) of Texas. Long-term (>10 years) continuous cropping rotation an ...
- Handle:
- 10113/10443
- DOI:
- 10.1016/S0167-1987(98)00119-6
- https://doi.org/10.1016/S0167-1987(98)00119-6
- Author:
- Unger, P.W.
- Source:
- Soil & tillage research 1996 v.37 no.1 pp. 67-75
- Subject:
- crop residue management; soil penetration resistance; soil water content; no-tillage; irrigation; soil organic matter; controlled traffic systems; grain sorghum; bulk density; wheat; clay loam soils; Triticum aestivum; furrows; Sorghum bicolor; crop rotation; hydraulic conductivity; Texas
- Abstract:
- ... Adverse soil physical conditions that limit soil water infiltration, root development, and crop yield could develop when using a no-tillage system, especially in humid regions or for irrigated crops. This study determined the effects of tillage treatments and controlled traffic on soil bulk density (BD), penetration resistance (PR), hydraulic conductivity (HC), water content, and organic matter co ...
- Handle:
- 10113/1668
- DOI:
- 10.1016/0167-1987(95)00508-0
- https://doi.org/10.1016/0167-1987(95)00508-0
- Author:
- Franzluebbers, A.J.; Hons, F.M.; Zuberer, D.A.
- Source:
- Applied soil ecology 1995 v.2 no.2 pp. 95-109
- ISSN:
- 0929-1393
- Subject:
- gas production (biological); biological activity in soil; carbon dioxide; soil temperature; soil water content; bulk density; no-tillage; discing; Glycine max; Triticum aestivum; Sorghum bicolor; fallow; seasonal variation; silt loam soils; soil organic matter; continuous cropping; Texas
25. Residual Effects of Soil Profile Modification on Water Infiltration, Bulk Density, and Wheat Yield
- Author:
- Paul W. Unger
- Source:
- Agronomy journal 1993 v.85 no.3 pp. 656-659
- ISSN:
- 0002-1962
- Subject:
- Triticum aestivum; crop yield; site preparation; soil texture; clay loam soils; soil profiles; soil density; bulk density; soil water content; water use efficiency; residual effects; preplanting treatment; grains; Texas
- Abstract:
- ... Fine-textured soils of the Southern High Plains, of which Pullman (fine, mixed, thermic Torrertic Paleustolls) is the dominant series,/ have inherently low water infiltration rates. Pullman soils have a moderately permeable surface horizon overlying and slowly-permeable Bt horizon, which limits deep water penetration, thus hampering water conservation efforts and reducing water-use efficiencies Ib ...
- DOI:
- 10.2134/agronj1993.00021962008500030025x
- https://doi.org/10.2134/agronj1993.00021962008500030025x
- Author:
- R.J. Lascano; J.L. Hatfield
- Source:
- Soil Science Society of America journal 1992 v.56 no.2 pp. 341-346
- ISSN:
- 0361-5995
- Subject:
- Paleustolls; bulk density; evaporation; irrigation; isotropy; models; particle size; particle size distribution; sandy clay loam soils; soil hydraulic properties; soil water; standard deviation; temporal variation; water management; Texas
- Abstract:
- ... Estimates of soil water evaporation are required for the assessment of soil water management practices. The purpose of this study was to investigate (i) the spatial and temporal changes in soil water evaporation along two transects in a bare soil, (ii) the spatial variability in soil properties, and (iii) the comparison of field-measured and simulated evaporation. The study was conducted on an Olt ...
- DOI:
- 10.2136/sssaj1992.03615995005600020002x
- https://doi.org/10.2136/sssaj1992.03615995005600020002x
- Author:
- T. M. Zobeck; T. W. Popham
- Source:
- Soil Science Society of America journal 1990 v.54 no.1 pp. 198-204
- ISSN:
- 0361-5995
- Subject:
- bulk density; climatic factors; cropland; plowing; plows; prediction; rain; regression analysis; sandy soils; wind erosion; Texas
- Abstract:
- ... Surface soil dry aggregate size distribution (ASD) has a significant effect on the amount and intensity of wind-induced soil erosion. The ASD of cropland varies through time primarily due to the effects of management and climatic factors. A method of predicting ASD is needed to make accurate estimates of wind erosion. The effects of tillage on ASD are described and models proposed to estimate chan ...
- DOI:
- 10.2136/sssaj1990.03615995005400010031x
- https://doi.org/10.2136/sssaj1990.03615995005400010031x
- Author:
- T. J. Gerik; J. E. Morrison; F. W. Chichester
- Source:
- Agronomy journal 1987 v.79 no.3 pp. 434-438
- ISSN:
- 0002-1962
- Subject:
- tillage; Sorghum bicolor; Gossypium hirsutum; Triticum aestivum; rooting; Vertisols; wheel tracks; bulk density; soil water content; soil strength; porosity; Texas
- Abstract:
- ... Soil structural deterioration from wheel compaction can adversely affect crop development and root growth. This study was conducted to determine the effect of controlled-traffic lanes on soil physical properties and crop rooting for no-tillage and conventional tillage cropping systems on a swelling clay soil. Sorghum [Sorghum bicolor (L.) Moench], cotton (Gossypium hirsutum L.), and wheat (Triticu ...
- DOI:
- 10.2134/agronj1987.00021962007900030006x
- https://doi.org/10.2134/agronj1987.00021962007900030006x
- Author:
- Paul W. Unger
- Source:
- Soil Science Society of America journal 1982 v.46 no.4 pp. 796-801
- ISSN:
- 0361-5995
- Subject:
- soil penetration resistance; tillage; clay loam soils; soil organic matter; bulk density; aggregate stability; dryland farming; Triticum aestivum; continuous cropping; winter wheat; soil aggregates; Texas
- Abstract:
- ... A dryland tillage and cropping system study for winter wheat (Triticum aestivum L.) was conducted on Pullman clay loam (fine, mixed, thermic Torrertic Paleustoll) from 1941 to 1977, a period much longer than most field studies. In 1977, soil samples were collected from the surface layer to evaluate effects of the long-term tillage and cropping practices on dry and water-stable aggregate distributi ...
- Handle:
- 10113/515
- DOI:
- 10.2136/sssaj1982.03615995004600040027x
- https://doi.org/10.2136/sssaj1982.03615995004600040027x
- Author:
- D. F. Yule; J. T. Ritchie
- Source:
- Soil Science Society of America journal 1980 v.44 no.6 pp. 1285-1291
- ISSN:
- 0361-5995
- Subject:
- Vertisols; bulk density; cation exchange capacity; drying; extensibility; porosity; shrinkage; soil air; water content; Texas
- Abstract:
- ... Soil shrinkage-water content relationships are needed to describe pore size distribution, bulk density function, and potential vertical movement of Vertisols. Ten-centimeter long, 10-cm diam cores were collected from the 10- to 20-, 40- to 50-, 70- to 80-, 100- to 110-, and 130- to 140-cm depths of eight central Texas Vertisols. Four sites were adjacent mound and depression samples from two gilgai ...
- DOI:
- 10.2136/sssaj1980.03615995004400060031x
- https://doi.org/10.2136/sssaj1980.03615995004400060031x
- Author:
- F. P. Allgood; Fenton Gray
- Source:
- Soil Science Society of America journal 1973 v.37 no.5 pp. 746-753
- ISSN:
- 0361-5995
- Subject:
- Argiudolls; Paleudolls; bulk density; cations; coasts; landscapes; organic matter; particle size distribution; soil classification; soil morphological features; soil quality; Missouri; Oklahoma; Texas
- Abstract:
- ... Numerous small mounds are unique features of landscapes that extend from the southern part of Missouri to the coast of Texas. Many hectares of eastern Oklahoma are included in this vast area. The mounds occur in densities of 8 to 16/ha. These mounds were studied with special emphasis on the genesis, morphology, and classification of associated soil pedons. Laboratory measurements included particle ...
- DOI:
- 10.2136/sssaj1973.03615995003700050033x
- https://doi.org/10.2136/sssaj1973.03615995003700050033x
- Author:
- Evett, S.R.; Peters, F.H.; Jones, O.R.; Unger, P.W.
- Source:
- Characterization and measurement of the hydraulic properties of unsaturated porous media : proceedings of the International Workshop on Characterization and Measurement of the Hydraulic Properties of Unsaturated Porous Media : Riverside, California, October 22-24, 1997 / edited by M. Th. van Genuchten and F.J. Leij, L. Wu pp. -
- Subject:
- saturated hydraulic conductivity; no-tillage; crop rotation; conventional tillage; long term experiments; soil water content; infiltrometers; grain sorghum; bulk density; infiltration (hydrology); wheat; fallow; Triticum aestivum; stubble mulching; Sorghum bicolor; soil water characteristic; Texas
- Handle:
- 10113/3063