Premium
Dissolution of Sulfur‐Coated Urea in Soil: I. Wax‐Sealed Sulfur‐Coated Urea
Author(s) -
Hashimoto Isao,
Mullins R. C.
Publication year - 1979
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/sssaj1979.03615995004300060021x
Subject(s) - urea , dissolution , wax , coated urea , sulfur , chemistry , sucrose , environmental chemistry , biochemistry , organic chemistry
The release of urea from three wax‐sealed, sulfur‐coated urea (SCU) samples was tested in a laboratory soil system. These samples were of nearly matched 7‐day dissolution values but had different amounts of total coatings. Soil‐SCU mixtures were incubated for varying times up to 18 weeks at different temperatures, pH (liming), and microbial (sucrose) levels. The release of urea from all samples increased markedly with increasing temperature but only slightly with increasing pH or microbial levels. Their time‐release patterns were different in spite of their similar 7‐day dissolution test values.