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siltloamsoils, etc ; clay; deformation; electron microscopy; fractal dimensions; liquefaction; loess; loess soils; macropores; micropores; research; seepage; soil erosion; tillage; China; Show all 15 Subjects
Abstract:
... Increases in pore water pressure affect the effective stress state of loess soil, resulting in deformation and even soil erosion. However, it is still unclear how the mechanical behaviours and microstructures of soil are influenced by the rate of increase in pore water pressure (RIPWP). To better understand the mechanical failure process and properties of soil under different RIPWPs, a series of c ...
siltloamsoils, etc ; infiltration rate; models; sand; vadose zone; Show all 5 Subjects
Abstract:
... The Beerkan infiltration experiment is carried out by inserting the ring a short depth into the soil and establishing a positive head of water on the infiltration surface for at least a part of the run. Nevertheless, the data are analyzed by assuming a fully unconfined infiltration process (ring insertion depth, d = 0 cm) and a null ponded depth of water (H = 0 cm). The influence of ring insertion ...
siltloamsoils, etc ; evaporation rate; plant analysis; sand; soil water; water content; Show all 6 Subjects
Abstract:
... The processes of soil cracking with water loss in saline soils are still not well understood. It is of great significances to further understand the mechanism of desiccation cracking in saline-alkali soil and provide guidance for engineering practice in saline-alkali area. Silt loam and sand samples were saturated with NaCl solutions (5, 50, and 100 g/L) and undergone the evaporation tests, during ...
siltloamsoils, etc ; meteorological data; rain; sandy loam soils; saturated hydraulic conductivity; Show all 5 Subjects
Abstract:
... The sensitivity of infiltration predictions by Hydrus‐1D and Green‐Ampt models to rainfall discretisation was investigated by assessing the accuracy of infiltration predictions with rainfall rate profiles at step sizes D between 2 and 1440 min. Five peak rainfall profiles and one sine‐wave rainfall profile, all with a cumulative rainfall amount of 28.8 cm and a duration of 24 h were used. Discrete ...
siltloamsoils, etc ; Luvisols; biochar; plant analysis; soil pH; soil structure; sorption; Slovakia; Show all 8 Subjects
Abstract:
... The effects of biochar application on soil properties have been widely discussed in the literature. As its effect is known to weaken over time, its reapplication may be beneficial in ameliorating the soil properties, including soil structure, however, there are several knowledge gaps. Therefore, this work addresses the effects of initial biochar application (0, 10, 20 t ha⁻¹) and its reapplication ...
siltloamsoils, etc ; agronomy; experimental design; grain yield; nitrogen; rice; total nitrogen; Arkansas; Missouri; Show all 9 Subjects
Abstract:
... Rice is typically produced under flooded conditions, but upward of 120,000 ha of furrow‐irrigated rice (FIR) were produced in Arkansas and Missouri in 2020. Nitrogen management will inherently vary under FIR production due to greater N loss potential, especially via nitrification–denitrification stimulated by wetting and drying cycles of the soil. A series of trials were conducted from 2018 to 202 ...
siltloamsoils, etc ; equations; infiltrometers; isotropy; permeameters; sand; saturated hydraulic conductivity; stormwater; urbanization; vadose zone; Show all 10 Subjects
Abstract:
... Infiltration stormwater control measures (SCMs) have the potential to contribute towards mitigating the effects of urbanization on downstream receiving waters. Infiltration SCMs are most often successful when the in‐situ saturated hydraulic conductivity (Kₛₐₜ) is well characterized. In this paper numerical solutions of the Richards’ equation are used to quantify the bias of seven infiltration meas ...
siltloamsoils, etc ; catenas; conservation tillage; erodibility; hydrodynamics; rain; runoff; sediment yield; sediments; wheat straw; Show all 10 Subjects
Abstract:
... Straw incorporation is a critical conservation tillage measure that effectively reduces slope runoff and sediment. This study used laboratory experiments to examine the combined effects of the straw length and incorporation rate on reducing runoff and sediment, under straw incorporation. The experiments involved three wheat straw lengths (3–5, 8–10, and 13–15 cm) and four incorporation rates (1.5, ...
Koffi Badou Jeremie Kouame; Matthew B. Bertucci; Mary C. Savin; Taghi Bararpour; Lawrence E. Steckel; Thomas R. Butts; Cammy D. Willett; Fellipe G. Machado; Nilda Roma-Burgos
siltloamsoils, etc ; Amaranthus palmeri; greenhouses; metolachlor; progeny; seedling emergence; seeds; weed control; Arkansas; Mississippi; Tennessee; Show all 11 Subjects
Abstract:
... Palmer amaranth (Amaranthus palmeri S. Watson) is one of the most problematic weeds in many cropping systems in the midsouthern United States because of its multiple weedy traits and its propensity to evolve resistance to many herbicides with different mechanisms of action. In Arkansas, A. palmeri has evolved metabolic resistance to S-metolachlor, compromising the effectiveness of an important wee ...
siltloamsoils, etc ; Lolium; macropores; microbial activity; mineralization; neck; porosity; sandy loam soils; soil organic carbon; Show all 9 Subjects
Abstract:
... The addition of exogenous organic matter (EOM) generally stimulates microbial activity and shapes soil structure, likely with stronger effects at a higher application dose. It is not known, however, if and how the application dose of EOM would impact its own mineralisation and that of native soil organic carbon (SOC) by such mediation of soil pore network structure. In 90-day soil incubation exper ...
... Soils may react to the impact of wheeling with volume-changed deformation by compaction and volume-constant deformation by shearing. The different deformation mechanisms with their deteriorated effects on soil pore functions have been studied frequently, but less is known about the compaction/shearing-induced deformation on structured soils as compared with homogenized substrates. In order to docu ...
siltloamsoils, etc ; dolomite; drainage; hydrologic models; karsts; preferential flow; rain; soil profiles; soil water content; Spain; Show all 10 Subjects
Abstract:
... Models provide quantitative solutions that enable better understanding of karst soils hydrology. A location in central Spain was selected to implement a 1-D hydrological model that uses a reservoir cascade scheme (RCS) approach to simulate soil water content (SWC) at daily resolution. The model simulates SWC for six soil layers and includes additional modules to reproduce preferential flow regime. ...
siltloamsoils, etc ; automation; desorption; fipronil; mass spectrometry; sandy soils; silty clay soils; solid phase extraction; solvents; Show all 9 Subjects
Abstract:
... Nowadays, environment fate and behavior of pesticides in soil is still not fully understood due to the lack of standardized soil extraction method. In this work, a soil-filled micro-matrix cartridge was online combined with high performance liquid chromatography-mass spectrometry (HPLC-MS) through a six-way valve for the simultaneous extraction and determination of residual fipronil in soil. Compa ...
... We assessed the potential profitability of twin‐row (TR) planting geometry as a water productivity‐enhancing practice and of skip‐row irrigation (SRI) as a water‐conserving practice in furrow‐irrigated cotton (Gossypium hirsutum L.) and soybean (Glycine max L.). Data from agronomic experiments carried on Dundee silt loam soils indicate that, on average, TR planting increases profitability by US$34 ...
... Although considerable knowledge exists on the impact of crop residues on soil N availability, information about their impact on nitrification specifically is lacking. The unique physiologies of ammonia oxidizing archaea (AOA) suggests their activities might respond differently to crop residue amendment compared to ammonia oxidizing bacteria (AOB). An incubation study was conducted on two widely di ...
... Cyclospora cayetanensis is a protozoan parasite that causes foodborne outbreaks of diarrheal illness (cyclosporiasis) worldwide. Contact with soil may be an important mode of transmission for C. cayetanensis and could play a role in the contamination of foods. However, there is a scarcity of detection methods and studies for C. cayetanensis in soil. Traditional parasitology concentration methods c ...
siltloamsoils, etc ; Zea mays; air drying; clay; corn; iron; nutrition; phosphorus fertilizers; plant analysis; trade; Louisiana; Mississippi River; Show all 12 Subjects
Abstract:
... Soils in Mississippi River alluvial plains is one of the distinct soil areas in Louisiana under corn (Zea mays) production. This study was conducted to evaluate the changes on Mehlich-3 extractable-phosphorus (P) and P-functional fractions of two Louisiana alluvial soils i.e., Commerce silt loam (Commerce sl) and Perry clay (Perry cl). Potted air-dried soils were mixed with different P rates (0, 3 ...
siltloamsoils, etc ; absorbents; biodegradability; bound water; energy; evaporation; hydrogels; infiltrometers; permeameters; saturated hydraulic conductivity; soil water; water stress; Show all 12 Subjects
Abstract:
... Superabsorbent polymers (hydrogels) have been studied for their ability to influence soil hydraulic conductivity because they can store and release water due to their swelling properties. However, concerns related to the increased use of synthetic hydrogels necessitates a switch to bio-based hydrogels, which are renewable and more biodegradable in comparison to synthetic hydrogels. In this study, ...
siltloamsoils, etc ; Zea mays; corn; crop coefficient; drought; evapotranspiration; grain yield; irrigation rates; models; nitrogen; Northwestern United States; Show all 11 Subjects
Abstract:
... Increased water demands and drought have resulted in the need to provide data to guide deficit water management decisions in irrigated maize (Zea mays L.) for grain production. The objective of this study was to develop relationships between maize grain yield and maize water use (ETc, crop evapotranspiration) under low and high nitrogen (N) input systems on a soil type (silt loam) common to maize ...
siltloamsoils, etc ; adsorption; benzene; chemical industry; environmental management; neural networks; organic matter; pH; prediction; sandy loam soils; temperature; Show all 11 Subjects
Abstract:
... The adsorption of benzene on soils is specifically associated with its migration and transformation. Although previous studies have proved that the adsorption of benzene is affected by various factors, studies simultaneously considering the effects of multiple factors are rare. This study aimed to identify the qualitative and quantitative relationships between multiple influential factors and the ...