LOCATION HALEIWA HI
Established Series
Rev. CWS/SN/HI/MRK
07/2019
HALEIWA SERIES
The Haleiwa series consists of deep, well drained soils that formed in alluvium derived from basic igneous material. Haleiwa soils are on alluvial fans and in drainageways along the coastal plains. Slopes are 0 to 15 percent. The mean annual rainfall is about 1143 millimeters (45 inches) and the mean annual air temperature is about 23 degrees C. (73 degrees F.)
TAXONOMIC CLASS: Fine, mixed, active, isohyperthermic Cumulic Haplustolls
TYPICAL PEDON: Haleiwa silty clay--irrigated sugarcane. (Colors are for dry soil unless otherwise noted. Textures are apparent field textures.)
Ap1--0 to 23 centimeters (0 to 9 inches); dark brown (10YR 3/3) silty clay, very dark grayish brown (10YR 3/2) moist; moderate fine and medium granular structure; hard, firm, moderately sticky and moderately plastic; many fine, medium and coarse roots; many very fine and fine interstitial pores; moderate effervescence with hydrogen peroxide; slightly acid (pH 6.4); gradual smooth boundary. (10 to 23 centimeters thick )
Ap2--23 to 43 centimeters (9 to 17 inches); dark brown (10YR 3/3) silty clay, very dark grayish brown (10YR 3/2) moist; moderate fine subangular blocky structure; hard, firm, moderately sticky and moderately plastic; many very fine, fine, and few coarse roots; common fine and few medium tubular pores; slight effervescence with hydrogen peroxide; slightly acid (pH 6.4); clear wavy boundary. (15 to 23 centimeters thick )
Bw--43 to 66 centimeters (17 to 26 inches); dark brown (10YR 3/3) moist and dry silty clay; weak fine subangular blocky structure; hard, firm, moderately sticky and moderately plastic; many very fine and fine roots; common fine and few medium tubular pores; patchy red clay films in pores and on some peds; slight effervescence with hydrogen peroxide; neutral (pH 6.7); clear wavy boundary. (20 to 25 centimeters thick )
C1--66 to 91 centimeters (26 to 36 inches); same as above except common very fine and fine roots; many very fine, common medium and few coarse tubular pores; moderate effervescence with hydrogen peroxide; neutral (pH 6.9); clear smooth boundary. (20 to 31 centimeters thick )
C2--91 to 122 centimeters (36 to 48 inches); dark yellowish brown (10YR 3/4) silty clay, dark brown (10YR 3/3) moist; weak fine subangular blocky structure; hard, friable, moderately sticky and moderately plastic; few very fine and medium roots; many very fine, common fine and few medium tubular pores; slight effervescence on soil mass with hydrogen peroxide; neutral (pH 6.9); clear wavy boundary. (25 to 31 centimeters thick )
C3--122 to 165 centimeters (48 to 65 inches); same as above except few very fine roots; many very fine and few tubular pores; slight effervescence on stains within pores with hydrogen peroxide.
TYPE LOCATION: Island of Oahu, Honolulu County, Hawaii; near the town of Waialua on the Waialua Agricultural Company; from Weed Circle intersection of Highway 82, 0.7 mile west to the Goodale Road intersection; turn south, proceed 2.500 feet on plantation road; site 50 feet west of road in field No. 1P; Haleiwa Quadrangle; lat. 21 degrees 34 minutes 18 seconds N. and long. 158 degrees 07 minutes 10 seconds W. (Old Hawaiian datum).
RANGE IN CHARACTERISTICS: In places the A horizon is silty clay loam or very stony silty clay loam. Hue of the solum is 10YR to 7.5YR. A few rounded pebbles occur throughout the profile. In places stones or stratified sand and gravel occur below depth of 102 centimeters (40 inches). Soil reaction ranges from slightly acid to neutral. The mean annual soil temperature is about 23 degrees C. (73 degrees F.)
COMPETING SERIES: This is the
Iao series. Iao soils have clay texture and are very sticky and very plastic.
GEOGRAPHIC SETTING: Haleiwa soils are on alluvial fans and flood plains at elevations from sea level to 250 feet. Slopes are 0 to 15 percent. The soils formed in alluvium from basic igneous material. Annual rainfall ranges from 762 to 1524 millimeters (30 to 60 inches). The average January air temperature is about 21 degrees C. (70 degrees F.), average July air temperature is about 24 degrees C. (76 degrees F.) mean annual air temperature is about 23 degrees C. (73 degrees F.)
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Hanalei,
Kawaihapai,
Pulehu and
Waialua soils.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained; slow runoff; moderately high permeability.
USE AND VEGETATION: Used for irrigated sugarcane (in the past), pasture, and truck crops. Natural vegetation is koa haole (Leucaena glauca, guava (Psidium guajava), and christmasberry (Schinus terebinthifolius).
DISTRIBUTION AND EXTENT: Islands of Oahu and Molokai, Hawaii. About 3,000 acres in extent.
SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: Davis, California.
SERIES ESTABLISHED: Island of Oahu, Honolulu County, Hawaii, 1967. Name is from Haleiwa town.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon- from a depth of 0 to 43 centimeters (Ap).
Cambic horizon - from a depth of 43 to 66 centimeters (Bw).
Need CEC data, could be Oxic subgroup. Need OC %, could have irregular decrease. Need to verify fine vs. very-fine texture.
FCC Classification: Cd
Edit Log: 4/19 MRK. Competing series updated and minor edits.
12/03 SN. Changed Bw horizon from B2. Added use and vegetation.
8/00 SN. Added "active" CEC class.
National Cooperative Soil Survey
U.S.A.