Sandy loam movement

Tasli, S., P. Ravanel, M. Tissut, J.L. Thony, and B. Garino (1996). Atrazine movement and dissipation in a sandy loam soil under irrigation An immunoenzymatic study. Bull. Environ. Contam. Toxicol., 56 359-366. 

Spurlock, F.C. and J.W. Biggar (1990). Effect of naturally occurring soluble organic matter on the adsorption and movement of simazine [2-chloro-4,6-bis-(ethylamino)-5-triazine] in Hanford sandy loam. Environ. Sci. Technol., 24 736-741. 

Sorenson, B.A., D.L. Wyse, W.C. Koskinen, D.D. Buhler, W.E. Lueschen, and M.D. Jorgenson (1993). Formation and movement of 14C-atrazine degradation products in a sandy loam soil under field conditions. Weed Sci., 41 239-245. 

Sandy loam SL 15-25 mm Coherence slight Sandy to touch. Clay is 10-20% Root growth of annuals and perennials is not restricted but has a high susceptibility to mechanical compaction. Very slight restriction on water movement soil water is available to most crops and trees. Water drains from the soil readily but not rapidly. 

Lopez-Avila, V., Hirata, P, Kraska, S., Flanagan, M., Taylor, J.H., Hern, S.C., Melanon, S., Pollard, J.P. (1989) Movement of selected pesticides and herbicides through columns of sandy loam. In Evaluation of Pesticides in Ground Water. Garner, W.Y., Honeycutt, R.C., Editors, American Chemical Society, Washington DC. 

Gove, L., Cooke, C. M., Nicholson, F. A. and Beck, A. J. (2001). Movement of water and heavy metals (Zn, Cu, Pb and Ni) through sand and sandy loam amended with biosolids under steady-state hydrological conditions. Bioresour. Technol. 78, 171-179. 

We suggest that simazine movement in Rutland sandy loam is less than otherwise anticipated because at this soil s low pH (4.6), more of the simazine is protonated, and therefore more strongly adsorbed, than in Penticton loam (pH 7.5). 

Movement of Selected Pesticides and Herbicides through Columns of Sandy Loam... 

Table II. Correlation Between the Movement of Test Chemicals Through Sandy Loam and Koc...

Peat and muck soils are very subject to blowing if and when they become very dry. Mineral soils vary markedly in their susceptibility to wind movement but sandy loams are likely to be readily moved when dry and bare. Clay soils are moved less readily if tightly held as clods that produce surface roughness. Clay soils also hold more water, and wet soils are not much affected by the wind. If clay soils are dry and dusty the surface layer is easily carried away by the wind. 

An accelerated desorption and movement of phenol and 2,4-dichlorophenol (2,4-DCP) in unsaturated soils was achieved by using nonuniform electrokinetics (Luo et al, 2005). Electromigration and EOF were the main driving forces, and their roles in the mobilization of phenol and 2,4-DCP varied with soil pFI. In sandy loam, 2,4-DCP moved between 1.0 and 1.5cm/(day V) slower toward the anode than in the kaolin soU, and about 0.5cm/(day V) greater than phenol in the sandy loam (Fig. 10.7). When the sandy loam was adjusted to pH 9.3, the movements of phenol and 2,4-DCP toward the anode were about two and five times faster than those at pH 7.7, respectively. The movement of phenol and 2,4-DCP in soils can be easily controlled by regulating the operational mode of electric field. The nonuniform electric field could enhance the in situ bioremediation process by promoting the mass... 

In contrast to location 1, the profile at location 2 was shallower, contained more sand, and below a depth of 0.60 meters would be considered a loam. The sandy layers at the profile base would tend to accelerate movement of the pesticide associated with the bulk flow of water and perhaps would account for the lack of residues in the deeper layers of the profile and for contaminated well water nearby. Based on texture and moisture analyses, one would expect a longer time required for downward movement of EDB at location 1 compared with location 2. 

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