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Contrasting Release Characteristics of Potassium in Alluvial and Associated Upland Soils of Indiana
Author(s) -
Binnie R. R.,
Barber Stanley A.
Publication year - 1964
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1964.03615995002800030025x
Subject(s) - alluvium , soil water , alluvial soils , alluvial plain , environmental science , potassium , agronomy , cropping , hydrology (agriculture) , soil science , geology , chemistry , agriculture , ecology , geomorphology , biology , paleontology , geotechnical engineering , organic chemistry
The uptake of K from alluvial soils was similar to that from associated upland soils under low cropping intensity. Under the high intensity cropping of a Neubauer experiment, the alluvial soils released more K. Within the exchangeable K range 40 to 180 ppm., K uptake was 67 ppm. greater from the alluvial soils than from the associated upland soils at the same exchangeable K level. The reduction of exchangeable K in the soil due to crop removal was greater in the upland than in the alluvial soils. There was no statistical correlation between the mineralogical composition of the soil and the K released.