Sulfur application with two rates of N (200 and 400 kg/ha) did not 

 increase yields of bahiagrass ( Paspalum notatum Flugge 'Pensacola') 

 and bermudagrass ( Cynodon dactylon L. 'Coastcross I') in the field un- 

 til the second year and only at the highest rate of N. All rates of 

 applied S increased S uptake by the plants during the growing season. 

 There seemed to be no advantage to applying S in split applications 

 during the season over a single application in early spring. 



Atmospheric and soil sources of S account for an estimated minimum 

 of 21 kg/ha of plant-available S during a growing season. With an 

 average of 15 to 39 kg of S per fertilized hectare applied in fertil- 

 izers in Florida, S deficiencies among field crops are unlikely except 

 where high yields are maintained and little or no S is applied in 

 fertilizers . 



xiv 



