Crowley soil series

Soil profile of Cw—Crowley silt loam, 0 to 1 percent slopes from St. Landry Parish, Louisiana. (Photo provided by Brandon Waltman, Assistant State Soil Scientist, Louisiana.) The site was sampled as part of a Dynamic Soil Properties Study: MLRA 150A - Dynamic Soil Properties Compare Cropland vs Pastureland for Crowley silt loam.

 

The Crowley Series consists of very deep, somewhat poorly drained, very slowly permeable soils that formed in clayey fluviomarine deposits of the Pleistocene age. (This pedon formed in clayey fluviomarine deposits derived from igneous, metamorphic and sedimentary rock.) These nearly level to very gently sloping soils occur on flat coastal plains terraces. Slope is dominantly less than 1 percent but ranges to 3 percent.

 

TAXONOMIC CLASS: Fine, smectitic, thermic Typic Albaqualfs

 

Detailed Soil Description (soil health sample in rice). Describers Name: LA & TX staff :

E—0 to 13 centimeters (0.0 to 5.1 inches); brown (10YR 5/3) silt loam; moderate medium subangular blocky parts to weak fine granular structure; 2.0 very fine roots throughout and 1.0 fine roots throughout; 2.0 very fine pores; 15 percent fine yellowish brown (10YR 5/8), moist, masses of oxidized iron in matrix; fragments; abrupt smooth boundary.; moist when described; observed in pit, large or quarry

 

Btg1—13 to 27 centimeters (5.1 to 10.6 inches); dark grayish brown (10YR 4/2) silt loam; moderate medium subangular blocky structure; 1.0 very fine roots throughout; 2.0 very fine pores; 10 percent medium strong brown (7.5YR 5/8), moist, masses of oxidized iron in matrix and 30 percent medium black (10YR 2/1), moist, manganese masses in matrix; fragments; abrupt smooth boundary.; moist when described; observed in pit, large or quarry

 

Btg2—27 to 51 centimeters (10.6 to 20.1 inches); light brownish gray (10YR 6/2) silt loam; moderate medium subangular blocky structure; 1.0 very fine roots throughout; 1 percent fine black (10YR 2/1), moist, manganese masses in matrix and 15 percent fine strong brown (7.5YR 5/8), moist, masses of oxidized iron in matrix; fragments; abrupt smooth boundary.; moist when described; observed in pit, large or quarry

 

Btg3—51 to 79 centimeters (20.1 to 31.1 inches); grayish brown (10YR 5/2) silty clay; moderate medium prismatic parts to moderate medium subangular blocky structure; 1.0 very fine roots throughout; 1 percent medium black (10YR 2/1), moist, manganese masses in matrix and 35 percent coarse red (2.5YR 4/8), moist, masses of oxidized iron in matrix; fragments; abrupt smooth boundary.; moist when described; observed in pit, large or quarry

 

Btg4—79 to 108 centimeters (31.1 to 42.5 inches); light brownish gray (10YR 6/2) silty clay loam; moderate medium subangular blocky structure; 1.0 very fine roots throughout; 10 percent fine black (10YR 2/1), moist, manganese masses in matrix and 40 percent coarse yellowish brown (10YR 5/8), moist, masses of oxidized iron in matrix; fragments; abrupt smooth boundary.; moist when described; observed in auger, bucket

 

Btg5—108 to 175 centimeters (42.5 to 68.9 inches); light brownish gray (10YR 6/2) silty clay loam; moderate medium subangular blocky structure; 1 percent fine black (10YR 2/1), moist, manganese masses in matrix and 30 percent coarse yellowish brown (10YR 5/8), moist, masses of oxidized iron in matrix; fragments; abrupt smooth boundary.; moist when described; observed in auger, bucket

 

Bt—175 to 200 centimeters (68.9 to 78.7 inches); light yellowish brown (10YR 6/4) clay; moderate medium subangular blocky structure; and 1 percent fine very dark grayish brown (10YR 3/2), moist, manganese masses in matrix and 3 percent medium yellowish red (5YR 5/8), moist, masses of oxidized iron in matrix and 25 percent medium reddish yellow (7.5YR 6/6), moist, masses of oxidized iron in matrix and 30 percent coarse light brownish gray (10YR 6/2), moist, iron depletions in matrix; fragments.; moist when described; observed in auger, bucket.

 

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