Effects of sample preparation on dilute acid-extractable ions were measured for paired unground field-fresh and ground air-dried soil samples taken from three depths at two sites in the coastal flatwoods of South Carolina. Concentrations of most extractable ions for the two preparation methods correlated closely. However, grinding and air-drying increased extractable NO - 3 concentrations by 6 to 10 times, NH + 4 and PO 3- 4 2 to 3 times, and base cations up to 2.5 times. Ion releases from grinding and drying soils in the laboratory are related to soil organic matter and to field changes in soil moisture depletion.
NOTES
1 Supported by cooperative grants from the Southeastern Forest Experiment Station, USDA Forest Service, and Duke Univ. Support for manuscript preparation received from Kansas State Univ. under NSF grant DEB 80-12166.
2 Research Associate, Div. of Biology, Kansas State Univ., Manhattan, KS 66506, and Assistant Professor of Soils and Watershed Management, School of Natural Resources, Univ. of Michigan, Ann Arbor, MI 48109.
Received for publication November 13, 1984.
Accepted for publication July 5, 1985.
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Details
Title
Increases in Extractable Ions in Infertile Aquults Caused by Sample Preparation
Publication Details
Soil Science Society of America Journal, Vol.49(6), pp.1576-1578
Resource Type
Journal article
Publisher
Soil Science Society of America
Grant note
Supported by cooperative grants from the Southeastern Forest Experiment Station, USDA Forest Service, and Duke Univ. Support for manuscript preparation received from Kansas State Univ. under NSF grant DEB 80-12166.