Releasing Pattern of Sulphur and Native Phosphorous
in Major Soil Series in Madurai District
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Author:P. Saravana Pandian
p-ISSN:0024-9602, e-ISSN:2582-5321, Vol:97, Issue:apr-jun
DOI: https://doi.org/10.29321/MAJ.10.100362
Abstract
laboratory experiment was carried out at the Agricultural college and Research Institute,
Madurai during the year 2005 to evaluate in the releasing pattern of sulphur and native
phosphorous from six major soil series of Madurai district, Tamil Nadu. The result revealed
that increasing levels of sulphur increased the available sulphur and phosphorous in all the
soils. The sulphur availability was increased upto 4 weeks of incubation and thereafter a
declining trend was noticed. Whereas the phosphorous availability increased progressively
with the increase in period of incubation upto fifth week beyond which the rate of increase
narrowed down. Among the six soil series, the maximum available sulphur (27.7 mg kg-1) and
phosphorous (25.0 mg kg-1) were observed in anaiyur series followed by kalathur series for
available sulphur (21.1 mg kg-1). Madukkar series recorded highest available phosphorous
(19.9 mg kg-1)
Key words : Soil series, sulphur, phosphorous, incubation, availability