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Land Disposal of Liquid Sewage Sludge: IV. Effect of Soil Phosphorus, Potassium, Calcium, Magnesium, and Sodium
Author(s) -
King Larry D.,
Morris H. D.
Publication year - 1973
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1973.00472425000200030026x
Subject(s) - cynodon dactylon , loam , sewage sludge , secale , agronomy , potassium , phosphorus , chemistry , fertilizer , magnesium , sodium , soil water , zoology , sewage , environmental science , environmental engineering , biology , organic chemistry , soil science
Over a 2‐year period a total of 6.93, 13.75, 20.0, and 40.0 cm of liquid sewage sludge (6.2% solids) was applied to Coastal bermudagrass ( Cynodon dactylon L. Pers.) on Cecil sandy clay loam (Typic Hapludult). The area was sod‐seeded to rye ( Secale cereale L.) during the winter. A chemical fertilizer treatment supplied a total of 722‐177‐366 kg/ha of N‐P‐K to the bermudagrass and rye during the experimental period. Sludge applications resulted in increased Na but decreased the dilute acid‐extractable K, Ca, and Mg and had no effect on P. Chemical fertilizer increased P, decreased K, and did not affect Ca and Mg. Results indicate that additions of dolomitic limestone and supplemental K fertilization would be required for sustained productivity of soils receiving sewage sludge.