114 



Table 22. Sulfur and nitrogen nutrition and yields of 28-day old 

 sorghum-sudangrass in an Orangeburg fine sand in the 

 greenhouse. 







Fertilizer 



Plant 



Dry 

 matter 





Her 



bage 





Horizon 







N:S 



S 



sequence 



S 



height 



yield - 



S 



N 



ratio 



uptake 





ppm 



— cm — 



-g/pot- 



^/ 







-mg/pot- 















Harvest 1 











A/ sand 







90 



9.33 



0.247 



3.86 



15 



24.1 



A/ sand 



20 



86 



9.48 



0.355** 



3.89 



11** 



33.7** 



A/B 







88 



9.42 



0.217 



3.80 



18 



20.3 



A/B 



20 



88 



10.62 

 Harvest 2 



0.305** 



3.47 



11** 



32.4** 



A/ sand 







78 



9.04 



0.152 



2.90 



20 



13.8 



A/ sand 



20 



94** 



10.21 



0.182 



2.87 



16** 



18.5** 



A/B 







86 



7.98 



0.152 



3.18 



21 



12.1 



A/B 



20 



80 



8.92 

 Harvest 3 



0.180 



3.18 



17** 



15.0** 



A/ sand 







56 



5.85 



0.072 



2.20 



30 



4.2 



A/sand 



20 



80** 



11.68** 



0.132 



2.10 



16** 



15.4** 



A/B 







56 



7.65 



0.087 



1.98 



22 



6.7 



A/B 



20 



69** 



11.92** 

 Harvest 4 



0.120** 



2.31 



19** 



14.3 



A/sand 







51 



3.40 



0.055 



2.26 



41 



1.8 



A/ sand 



20 



71** 



8.14** 



0.117** 



2.44 



21** 



9.6** 



A/B 







68 



6.38 



0.065 



2.16 



33 



4.1 



A/B 



20 



68 



8.70** 



0.107** 



2.44 



23* 



9.4** 



t 



All values are the means of four replications. 



* ** 



' Significantly different between S treatments 



levels, respectively. 



at the 0.05 and 0.01 



