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Salinity risks on calcareous soils following pig slurry applications
Author(s) -
Bernal M. P.,
Roig A.,
Madrid R.,
Navarro A. F.
Publication year - 1992
Publication title -
soil use and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.709
H-Index - 81
eISSN - 1475-2743
pISSN - 0266-0032
DOI - 10.1111/j.1475-2743.1992.tb00907.x
Subject(s) - calcareous , salinity , slurry , soil water , soil salinity , potassium , cation exchange capacity , environmental science , arid , agronomy , environmental chemistry , chemistry , soil science , geology , environmental engineering , paleontology , oceanography , organic chemistry , biology
. The electrical conductivity of pig slurry suggests that addition of this waste to soils in arid and semi‐arid areas could cause salinization. Changes in electrical conductivity and soluble salt concentration in two calcareous soils indicated a salinity risk after 24 months of pig slurry addition at rates of 400 m 2 /ha/yr or more. Salinity risk increased with soil water‐holding capacity. Water‐soluble potassium concentrations showed a greater increase than other cations in the soils because of the large amount present in the slurry. The proportion of soluble potassium in the soil depended on the soil's cation exchange capacity and on the composition of the clay fraction.