Sulphur Status Of Some Soils In Edo State, Nigeria

Sulphur status of some soils in Edo Central, Nigeria was evaluated in five different locations; Ekpoma, Irrua, Uromi, Ubiaja and Agbede. The area lies within the derived savanna-forest transitional zone. Surface soil samples (0 – 15 cm) collected from the five localities wasanalyzed for their physico-chemical properties, inorganic, organic and total sulphur contents. Results showed that inorganic, organic and total sulphur ranged from 0.10 to 0.37, 0.79 to 2.75 and 6.30 to 16.41 mg/kg respectively. Inorganic sulphur content of all the locations was generally below the critical level of 8.50 mg/kg and therefore generally deficient in inorganic sulphur. Inorganic sulphur correlated significantly with available phosphorus but was negative and nonsignificant with organic carbon, pH, nitrogen, ECEC, clay and silt contents. Application of sulphur fertilizer is recommended for adequate crop yield in the agro-ecological zone. Key words; inorganic sulphur, organic sulphur,sulphur, physico-chemical properties, total sulphur ————————————————————