Preferential Solute Transport in a Loess Silt Loam Soil

Soil Science ◽  
2013 ◽  
Vol 178 (4) ◽  
pp. 157-164 ◽  
Author(s):  
Ting Yang ◽  
Quanjiu Wang ◽  
Beibei Zhou ◽  
David Warrington
Keyword(s):  
Solute Transport ◽  
Silt Loam ◽  
Silt Loam Soil ◽  
Loam Soil

scholarly journals Evaluation of MACRO model by short-term water and solute transport simulation in Maury silt loam soil

2011 ◽  
Vol 51 (No. 3) ◽  
pp. 110-123 ◽  
Author(s):  
H. Merdun ◽  
V.L. Quisenberry
Keyword(s):  
Solute Transport ◽  
Water Flow ◽  
Chloride Transport ◽  
Effective Diffusion ◽  
Diffusion Path ◽  
Silt Loam ◽  
Short Term ◽  
Silt Loam Soil ◽  
Diffusion Path Length ◽  
Loam Soil

Modeling preferential flow has been a concern of many academic fields in the past 30 years all over the world and helps to prevent groundwater contamination. A dual-porosity model, MACRO, was evaluated for short-term (less than 2 days) simulation of water flow and non-reactive solute (chloride) transport through the profile of six plots in well-structured Maury silt loam soil. Water flow in micropores is calculated by the Richards’ equation while simple gravity flow is assumed in the macropores. Solute transport in the micropores is calculated by the convection-dispersion equation (CDE) while the dispersion and diffusion in the CDE is neglected for the solute transport in the macropores. The applied water and chloride reached the bottom of the profile during the 2 and 1-hour(s) application periods in studies 2 and 3, respectively. There is a strong indication of macropore flow in this soil. Based on the statistical criteria, the model accurately simulated water flow and solute transport with depth and time in all plots. The mean values of three statistical parameters (coefficient of residual mass, model efficiency, and correlation coefficient) for water and chloride transport were –0.0014, 0.791, 0.903 and 0.0333, 0.923, 0.956, respectively. Preliminary studies showed that the model could not simulate flow and transport well enough with the one-domain flow concept. In the two-domain flow, effective diffusion path-length, boundary hydraulic conductivity, and boundary soil water pressure were the three most important parameters that control flow and transport between the two domains. The effective diffusion path-length represented the structural development with depth in the Maury silt loam soil.

Water and Solute Transport in a Cultivated Silt Loam Soil: 2. Numerical Analysis

2005 ◽  
Vol 4 (3) ◽  
pp. 587-601 ◽  
Author(s):  
Y. Coquet ◽  
J. Šimůnek ◽  
C. Coutadeur ◽  
M. Th. van Genuchten ◽  
V. Pot ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Solute Transport ◽  
Silt Loam ◽  
Silt Loam Soil ◽  
Loam Soil ◽  
Water And Solute Transport

Water and Solute Transport in a Cultivated Silt Loam Soil: 1. Field Observations

2005 ◽  
Vol 4 (3) ◽  
pp. 573-586 ◽  
Author(s):  
Y. Coquet ◽  
C. Coutadeur ◽  
C. Labat ◽  
P. Vachier ◽  
M. Th. van Genuchten ◽  
...  
Keyword(s):  
Solute Transport ◽  
Field Observations ◽  
Silt Loam ◽  
Silt Loam Soil ◽  
Loam Soil ◽  
Water And Solute Transport

Aspects of Structure that Affect Germination in a Silt Loam Soil

1954 ◽  
Vol 18 (2) ◽  
pp. 219-221 ◽  
Author(s):  
C. S. Slater ◽  
Alvaro Rodriguez
Keyword(s):  
Silt Loam ◽  
Silt Loam Soil ◽  
Loam Soil

MEASURING AND MODELING ROOT WATER UPTAKE BASED ON 36CHLORIDE DISCRIMINATION IN A SILT LOAM SOIL AFFECTED BY GROUNDWATER

Soil Science ◽  
1994 ◽  
Vol 158 (2) ◽  
pp. 97-105 ◽  
Author(s):  
U. SCHMIDHALTER ◽  
H. M. SELIM ◽  
J. J. OERTLI
Keyword(s):  
Water Uptake ◽  
Root Water Uptake ◽  
Silt Loam ◽  
Silt Loam Soil ◽  
Loam Soil

scholarly journals VEGETATIVE GROWTH AND NUTRIENT LEVELS OF LINGONBERRIES GROWN IN FOUR ALASKAN SUBSTRATES

1982 ◽  
Vol 62 (4) ◽  
pp. 969-977 ◽  
Author(s):  
PATRICIA S. HOLLOWAY ◽  
ROBERT M. VAN VELDHUIZEN ◽  
CECIL STUSHNOFF ◽  
DAVID K. WILDUNG
Keyword(s):  
Vegetative Growth ◽  
Sandy Loam ◽  
Leaf Size ◽  
Maximum Growth ◽  
Stem Length ◽  
Dry Matter Accumulation ◽  
Silt Loam ◽  
Tissue Samples ◽  
Silt Loam Soil ◽  
Loam Soil

Vegetative growth of lingonberries was observed on plants growing in four unsterilized, native-Alaskan substrates: coarsely-ground Lemeta peat, Fairbanks silt loam soil, a mixture of peat and silt loam soil and washed Chena very fine sandy loam soil. Following three growing seasons, plants in the peat treatment showed the greatest increase in vegetative growth as revealed by the number of new stems produced, stem length and dry weight per plant. Leaf size did not differ among substrate treatments. The leaves on plants grown in the peat substrate remained green throughout the entire experiment. The leaves of plants in all other treatments showed varying degrees of chlorosis followed by reddening and necrosis. Differences in concentration of N, P, K, Mn, Fe, Zn and Al in whole-plant tissue samples were recorded. The results indicate lingonberries should be grown in a peat substrate for maximum growth and dry matter accumulation.

Hydraulic Properties in a Silt Loam Soil under Natural Prairie, Conventional Till, and No-Till

2004 ◽  
Vol 68 (5) ◽  
pp. 1679-1688 ◽  
Author(s):  
Juan P. Fuentes ◽  
Markus Flury ◽  
David F. Bezdicek
Keyword(s):  
Hydraulic Properties ◽  
Silt Loam ◽  
No Till ◽  
Silt Loam Soil ◽  
Loam Soil ◽  
Natural Prairie
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