LIST OF TABLES 

 Table Page 



1. Mean sulfur fractions and C:N:S ratios for different 



soils 12 



2. The oxidation states of sulfur in soils 14 



3. Sulfur oxidation reactions by certain species of 



thiobacilli 17 



4. Sources of biogenic S from wetlands in Florida 33 



5. The use of selected sulfur-containing fertilizers in 



Florida 38 



6. Critical levels of total sulfur, sulfate sulfur, and N:S 



ratios for selected crops 44 



7. Selected methods used to determine sulfate and 



extractable sulfur in soils 51 



8. Nutrients applied to surface soils used in a 



greenhouse evaluation of subsoil sulfur 67 



9. Sulfate sulfur removed by four extraction methods 



and percent recovery of added sulfur . , 77 



10. Sulfur content of finely ground soil and screened soil 



using the MgN03/HN03 digestion procedure 79 



11. A comparison of three rapid methods of estimating 



total sulfur in soils 81 



12. Selected chemical and mineralogical properties of 



some Florida Spodosols 87 



13. Correlation coefficients of some soil properties 



with extractable and total sulfur in Florida 



Spodosols 



14. Selected chemical and mineralogical properties of 



some Florida Entisols 93 



vxi 



