113 



Table 21. Sulfur and nitrogen nutrition and yields of 28-day old 

 sorghum-sudangrass in a Myakka fine sand in the 

 greenhouse. 



Dry Herbage 



Horizon Fertilizer Plant matter N:S S 



sequence S height" yield" S N ratio uptake 



ppm — cm -g/pot- % -mg/pot- 



Harvest 1 



A/sand 







85 



7.75 



0.130 



3.10 



24 



10.1 



A/ sand 



20 



92 



9 . 20** 



0.270** 



3.32 



12** 



24.7** 



A/B 







90 



7.98 



0.132 



2.95 



22 



10.6 



A/B 



20 



88 



8.44* 

 Harvest 



0.233** 

 2 



3.33 



12 



19.7 



A/ sand 







60 



3.59 



0.082 



2.62 



30 



3.0 



A/sand 



20 



68** 



8.15** 



0.187** 



2.82** 



15** 



15.3** 



A/B 







56 



3.27 



0.077 



2.66 



34 



2.6 



A/B 



20 



75** 



6.99** 



Harvest 



0.197** 

 3 



3.32** 



17** 



13.8** 



A/sand 







40 



2.07 



0.075 



3.32 



44 



1.6 



A/sand 



20 



78** 



10.62** 



0.120** 



1.87** 



16** 



12 . 7** 



A/B 







35 



1.38 



0.075 



4.32 



58 



1.0 



A/B 



20 



65** 



8.61** 

 Harvest 



0.115** 



4 



2.11** 



18** 



9 m 9** 



A/ sand 







43 



1.85 



— 



— 



— 



— 



A/ sand 



20 



73** 



7.70** 



— 



— 



— 



— 



A/B 







35 



0.58 







— 



— 



— 



A/B 



20 



59** 



4.27** 



— 



— 



— 



— 



All values are the means of four replications. 





' Significantly different between S treatments at the 0.05 and 0.01 

 levels, respectively. 



