Table 1. Selected characteristics of the dominant soils in MLRA 133B that relate to water and solute transport.
Great group /Series	Family	Approximate Area	Drainage Class	Permeability	Slope Range	Hydrologic Group
		acres			%
Paleudalfs
Annona	Fine, montmorillonitic, thermic Vertic	249,396	moderately well	very slow	0 - 8	D
Bernaldo	Fine-loamy, siliceous, thermic Glossic	196,271	well drained	moderate	0 - 8	B
Bernow	Fine-loamy, siliceous, thermic Glossic	194,951	well	moderate	0 - 12	B
Bienville	Sandy, siliceous, thermic Psammentic	117,522	somewhat excessive	moderately rapid	0 - 5	A
Gore	Fine, mixed, thermic Vertic	264,998	moderately well	very slow	1 - 20	D
Glenmora	Fine-silty, siliceous, thermic Glossaquic	132,300	moderately well	slow	1 - 5	C
Keithville	Fine-silty, siliceous, thermic Glossaquic	179,618	moderately well	very slow	1 - 5	D
Nacogdoches	Fine, kaolinitic, thermic Rhodic	111,249	well	moderately slow	0 - 15	B
Tippah	Fine-sility, mixed, thermic Aquic	110,604	moderately well	moderate/slow	0 - 12	C
Wolfpen	Loamy, siliceous, thermic Arenic	343,932	well	moderate	1 - 15	A
Woodville	Fine, montmorillonitic, thermic Vertic	178,810	somewhat poor	very slow	1 - 12	D
Pickton	Loamy, siliceous, thermic Grossarenic	276,662	well	moderate	1 - 15	D
Paleudults
Bowie	Fine-loamy, siliceous, thermic Plinthic	723,563	well	moderately slow	1 - 8	B
Conroe	Clayey, kaolinitic, thermic Arenic Plinthic	137,439	moderately well	slow	0 - 12	B
Hapludalfs
Cadeville	Fine, mixed, thermic Albaquic	100,275	moderately well	very slow	1 - 40	D
Eastwood	Fine, montmorillonitic, thermic Vertic	227,019	moderately well	very slow	1 - 20	D
Frizzell	Coarse-silty, siliceous, thermic Glossaquic	147,054	somewhat poor	slow	0 - 3	C
Redsprings	Fine, kaolinitic, thermic Ultic	112,536	well	moderately slow	2 - 40	B
Trawick	Fine, mixed, thermic Mollic	104,655	well	moderately slow	2 - 45	B
Woodtell	Fine, montmorillonitic, thermic Vertic	685,155	well	very slow	1 - 20	D
Paleudults
Darco	Loamy, siliceous, thermic Grossarenic	281,180	somewhat excessive	moderate	1 - 25	A
Doucette	Loamy, siliceous, thermic Arenic Plinthic	107,468	well	moderately	1 - 8	B
Harleston	Coarse-loamy, siliceous, thermic Aquic	148,087	moderately well	moderate	0 - 12	C
Kullit	Fine-loamy, siliceous, thermic Aquic	143,587	moderately well	moderately slow	0 - 5	B
Malbis	Fine-silty, siliceous, thermic Plinthic	210,171	well/moderately well	moderate	0 - 8	B
Lilbert	Loamy, siliceous, thermic arenic Plinthic	271,541	well	moderately slow	1 - 8	B
Pinetucky	Fine-loamy, siliceous, thermic Plinthic	193,753	moderately well	moderately slow	1 - 8	B
Sawyer	Fine-silty, siliceous, thermic Aquic	365,596	moderately well	slow	1 - 25	C
Ruston	Fine-loamy, siliceous, thermic Typic	592,891	well	moderate	0 - 8	B
Hapludults
Cahaba	Fine-loamy, siliceous, thermic Typic	164,543	well	moderate	0 - 8	B
Cuthbert	Clayey, mixed, thermic Typic	769,486	well	moderately slow	5 - 40	C
Darley	Clayey, kaolinitic, thermic Typic	166,833	well	moderately slow	1 - 30	C
Kirvin	Clayey, mixed, thermic Typic	625,877	well	moderately slow	1 - 15	C
Tenaha	Loamy, siliceous, thermic Arenic	239,421	well	moderate	1 - 20	B
Sacul	Clayey, mixed, thermic Aquic	1,703,187	moderately well	slow	1 - 40	C
Saffell	Loamy-skeletal, siliceous, thermic Typic	193,368	well	moderate	1 - 60	B
Smithdale	Fine-loamy, siliceous, thermic Typic	512,810	well	moderate	1 - 45	B
Fluvaquents
Mantachie	Fine-silty, siliceous, acid, thermic Aeric	205,496	somewhat poor	moderate	0 - 3	C
Nahatche	Fine-loamy, siliceous, nonacid, thermic Aeric	319,541	somewhat poor	moderate	0 - 1	C
Fragiudults
Pheba	Coarse-silty, siliceous, thermic Glossaquic	230,539	somewhat poor	moderately slow	0 - 3	C
Savannah	Fine-loamy, siliceous, thermic Typic	515,441	moderately well	moderately slow	0 - 15	C
Glossaqualfs
Caddo	Fine-silty, siliceous, thermic Typic	130,327	poor	slow	0 - 3	D
Wrightsville	Fine, mixed, thermic Typic	436,818	poor	very slow	0 - 1	D
Guyton	Fine-silty, siliceous, thermic Typic	1,356,418	poor/very poor	slow	0 - 1	D
Other
Fuquay	Loamy, siliceous, thermic Arenic Plinthic Kandiudults	163,312	well	moderate/slow	0 - 10	B
Iuka	Coarse-loamy, siliceous, acid, thermic Aquic Udifluvents	243,285	moderately well	moderate	0 - 2	C
Kolin	Fine-silty, siliceous, thermic Haplic Glossudalfs	114,060	moderately well	very slow	1 - 8	C
Ouachita	Fine-silty, siliceous, thermic Fluventic Dystrochrepts	206,127	well	moderately slow	0 - 3	C
Amy	Fine-silty, siliceous, thermic Typic Ochraquults	526,971	poor	slow	0 - 3	D
Billyhaw	Very fine, montmorillonitic, thermic typic Hapluderts	129,727	moderately well	very slow	0 - 5	D
Smithton	Coarse-loamy, siliceous, thermic typic Paleaquults	200,093	poor	moderately slow	0 - 3	D

 

Table 2. Soil description of Study Site 1. The description was developed by P.R. Owens and LB. Ward.
Horizon	Depth (cm)	Structure and description
A	0 - 7	weak fine subangular blocky; very friable; common fine discontinuous pores; clear smooth boundary
BE	7 - 19	weak medium subangular blocky; friable; few very fine roots; common fine discontinuous pores; gradual smooth boundary
Bt1	19 - 33	moderate medium subangular blocky; friable; few very fine roots; common fine pores, clear wavy boundary
Bt2	33 - 47	weak medium angular blocky; firm; few very fine roots; common fine continuous pores; gradual smooth boundary
Bt3	47 - 80	moderate coarse angular blocky; firm; few very fine roots, common fine and common medium continuous pores; clear smooth boundary
Bt4	80 - 95	weak medium angular blocky; firm; few very fine roots, common fine continuous pores, clear smooth boundary
Btxv	95 -113	weak fine prismatic-moderate medium angular blocky; very firm and brittle in about 80% of the matrix, few very fine roots between prism faces; few medium continuous pores; clear wavy boundary
Bxv	113 - 130+	weak coarse prismatic structure; very firm and brittle in 60% of the matrix; common medium and common coarse pores; boundary not observed
Location:	Southwest Research and Extension Center near Hope, Arkansas.
Landuse:	pasture.
Taxonomic class:	Fine-loamy, siliceous, thermic Plinthic Fragiudult

Table 3. Physical and chemical properties of the soil at study site 1.
Soil	Bulk	Organic	pH	Geometric	Textural			Textural	Water Retained at
Depth	Density	Carbon		Mean Ksat	Composition			Class	10	100	1500
					Sand	Silt	Clay		kPa	kPa	kPa
cm	Mg m-3	%		cm h-1	------ % ------				--- kg  kg-1 ---
5	1.20	1.2	5.6	4.910	62.0	32.1	5.9	sandy loam	. 344	.064	.038
15	1.63	0.7	6.3	5.911	62.9	28.5	8.6	sandy loam	. 161	.059	.028
25	1.60	0.6	5.6	6.250	55.0	31.2	13.8	sandy loam	. 175	.108	.063
35	1.46	0.5	4.9	6.250	46.2	32.3	21.5	loam	. 215	.147	.098
45	1.55	0.4	4.9	1.264	40.1	28.2	31.6	clay loam	. 302	.151	.101
55	1.63	0.3	5.0	1.199	40.4	28.5	31.1	clay loam	. 296	.140	.093
65	1.64	0.4	5.1	0.633	43.2	29.9	26.9	loam	. 205	.132	.087
75	1.68	0.4	5.2	0.504	44.0	30.8	25.2	loam	. 197	.141	.086
85	1.70	0.5	5.2	0.850	43.3	31.8	24.9	loam	. 179	.136	.083
95	1.75	0.4	5.2	1.022	43.1	32.8	24.1	loam	. 172	.117	.076

Table 4. Cumulative rainfall, time, percent recovery of Br, and average rates of loss of bromide in the soil at Study Site 1.
Sampling	Cumulative	Elapsed	Bromide	Rate of loss
Period	Rainfall	Time	Recovered	Rainfall	Time
	cm	days	%	g cm-1	g day-1
1	15.5	64	45.3	59.2	14.3
2	55.7	155	27.3	5.4	3.3
3	100.5	299	5.4	3.6	2.5

 
 

Table 5. Soil description of Study Site 2. The description was developed by P.R. Owens and L.B. Ward.
Horizon	Depth (cm)	Structure and description
A	0- 7	weak very fine subangular blocky; very friable; many very fine roots; clear smooth boundary
BE	7-17	weak medium subangular blocky; friable; few very fine roots; few fine continuous pores; abrupt smooth boundary
Bt1	17- 35	moderate medium subangular blocky; firm; many distinct clay films of faces of peds; few very fine roots, clear smooth boundary
Bt2	35- 57	moderate medium subangular blocky; friable; many distinct clay films on faces of peds; few very fine roots; gradual smooth boundary
Btg1	57- 76	weak medium prismatic-moderate angular; firm; many distinct continuous clay films on faces of peds and lining pores; few very fine roots; gradual smooth boundary
2Btg2	76- 93	moderate medium angular blocky; firm; many distinct clay films of faces of peds; few very fine roots; few fine continuous pores; clear smooth boundary
2Btg3	93-116	moderate coarse angular blocky; very firm; many distinct clay films on faces of peds; few very fine roots; few continuous pores; clear smooth boundary
2BCg	116-150	weak coarse angular blocky structure and common wedge shaped peds; very firm; few non intersecting slickensides; few very fine roots, few very fine discontinuous pores; gradual smooth boundary
2C	150-160+	marl
Location:	Southwest Research and Extension Center near Hope, Arkansas on the Beef farm.
Landuse:	pasture
Taxonomic class:	Fine, mixed, thermic Oxyaquic Hapludalf

Table 6. Physical and chemical properties of the soil at study site 2.
Soil	Bulk	Organic	pH	Geometric	Textural			Textural	Water Retained at
Depth	Density	Carbon		Mean Ksat	Composition			Class	10	100	1500
					Sand	Silt	Clay		kPa	kPa	kPa
cm	Mg m-3	%		cm h-1	------ % ------				--- kg  kg-1 ---
5	1.35	0.9	4.4	36.68	47.0	37.6	15.4	loam	. 298	. 109	. 051
15	1.42	0.5	4.6	2.40	36.9	37.0	26.1	loam	. 180	. 114	. 071
25	1.49	0.4	4.5	0.16	24.7	40.8	34.5	clay loam	. 245	. 172	. 142
35	1.51	0.4	4.6	3.86	22.0	40.3	37.7	clay loam	. 239	. 215	. 157
45	1.53	0.3	4.5	2.75	23.9	40.9	35.2	clay loam	. 244	. 219	. 145
55	1.55	0.2	4.5	0.39	26.5	39.3	34.2	clay loam	. 231	. 198	. 137
65	1.56	0.2	4.7	2.19	25.5	38.0	36.5	clay loam	. 255	. 231	. 158
75	1.56	0.2	4.5	0.55	24.2	32.7	43.1	clay	. 255	. 232	. 157
85	1.57	0.2	4.6	0.15	22.8	29.3	48.0	clay	. 279	. 245	. 181
95	1.52	0.2	4.6	0.19	26.2	32.9	40.9	clay	. 279	. 253	.184

Table 7. Cumulative rainfall, time, percent recovery of Br, and average rates of loss of bromide in the soil at Study Site 2.
Sampling	Cumulative	Elapsed	Bromide	Rate of Loss
Period	Rainfall	Time	Recovered	Rainfall	Time
	cm	days	%	g cm-1	g day-1
1	15.5	64	52.8	51.0	12.4
2	55.7	155	48.0	2.0	0.9
3	100.5	299	15.4	12.2	3.8