Comment on “Adsorption of CO2and N2on Soil Organic Matter:  Nature of Porosity, Surface Area, and Diffusion Mechanism”

1996 ◽  
Vol 30 (12) ◽  
pp. 3634-3635 ◽  
Author(s):  
Frank-Dieter Kopinke ◽  
Ullrich Stottmeister
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Surface Area ◽  
Diffusion Mechanism ◽  
And Diffusion

Adsorption and Diffusion of Dinitroaniline Herbicides in Soils

Weed Science ◽  
1979 ◽  
Vol 27 (4) ◽  
pp. 450-455 ◽  
Author(s):  
G. L. Jacques ◽  
R. G. Harvey
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Water Content ◽  
Soil Water ◽  
The Other ◽  
Silt Loam ◽  
Relative Mobility ◽  
Water Saturated ◽  
And Diffusion ◽  
Dinitroaniline Herbicides

Adsorption of benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine), dinitramine (N4,N4-diethyl-α,α,α-trifluoro-3,5-dinitrotoluene-2,4-diamine), fluchloralin [N-(2-chloroethyl)-2,6-dinitro-N-propyl-4-(trifluoromethyl)aniline], oryzalin (3,5-dinitro-N4,N4-dipropylsulfanilamide), profluralin [N-(cyclopropylmethyl)-α,α,α-tri-fluoro-2,6-dinitro-N-propyl-p-toluidine], and trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) was studied in 10 Wisconsin soils. Ratios of the quantity of each herbicide adsorbed and quantities remaining in the soil solution at equilibrium (Kd value) on a Piano silt loam (Typic Argiudoll fine-silty, mixed, mesic) remained relatively constant over a range of concentrations. Herbicide adsorption by the soils was related more closely to soil organic matter than to the other soil chemical and physical properties. Diffusion of the herbicides in Piano silt loam was affected by soil water. Diffusion of trifluralin, profluralin and benefin decreased as soil water increased. Diffusion of dinitramine and fluchloralin did not change significantly with change in water content. Diffusion of oryzalin increased at the highest soil water content. None of the herbicides moved more than 10 mm in the soil during a 17-day period. In unsaturated Piano silt loam, relative mobility of the herbicides was trifluralin ≥benefin>profluralin>fluchloralin>dinitramine≥oryzalin. Oryzalin reached highest mobility in water-saturated soil.

Correspondence. Reply to comment on "The surface area of soil organic matter"

1992 ◽  
Vol 26 (2) ◽  
pp. 404-406 ◽  
Author(s):  
Cary T. Chiou ◽  
Jiunn Fwu Lee ◽  
Stephen A. Boyd
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Surface Area

The surface area of soil organic matter

1990 ◽  
Vol 24 (8) ◽  
pp. 1164-1166 ◽  
Author(s):  
Cary T. Chiou ◽  
Jiunn Fwu Lee ◽  
Stephen A. Boyd
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Surface Area

Surface Area of Soil Organic Matter Reexamined

1995 ◽  
Vol 59 (4) ◽  
pp. 1012-1018 ◽  
Author(s):  
K. D. Pennell ◽  
L. M. Abriola ◽  
S. A. Boyd
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Surface Area

Correspondence. Comment on "The surface area of soil organic matter"

1992 ◽  
Vol 26 (2) ◽  
pp. 402-404 ◽  
Author(s):  
Kurt D. Pennell ◽  
P. Suresh C. Rao
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Surface Area

Adsorption, Mobility, and Efficacy of Metribuzin as Influenced by Soil Properties

Weed Science ◽  
1985 ◽  
Vol 33 (6) ◽  
pp. 868-873 ◽  
Author(s):  
C. John Peter ◽  
Jerome B. Weber
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Surface Area ◽  
Water Solubility ◽  
Organic Matter Content ◽  
Matter Content ◽  
Water Soluble ◽  
Soil Parameters ◽  
Glycol Monoethyl Ether ◽  
Highly Correlated

The effect of various soil parameters on metribuzin [4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one] efficacy was studied on seven soils and metribuzin adsorption was investigated in nine soils. Soil organic-matter and clay contents were correlated with metribuzin activity. Specific surface area, as measured by ethylene glycol monoethyl ether (EGME) was highly correlated with metribuzin activity. Soil organic-matter content and EGME surface area measurements were also highly correlated with metribuzin adsorption in soils. Since metribuzin is highly water soluble (water solubility greater than 1000 ppm), it was probably adsorbed at the hydrophilic sites on the soil surfaces that were measured by EGME. Metribuzin was much more mobile than atrazine [6-chloro-N-ethyl-N′-(1-methylethyl)-1,3,5-triazine-2,4-diamine] in a leaching study.

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