115 



Table 23. Sulfur and nitrogen nutrition and yields of 28-day old 

 sorghum-sudangrass in a Norfolk 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 







91 



9.39 



0.155 



2.92 



19 



14.5 



A/sand 



20 



87 



9.32 



0.207** 



2.88 



]_4*rt 



19.3** 



A/B 







98 



10.98 



0.140 



2.73 



20 



15.4 



A/B 



20 



91 



9.80 

 Harvest 2 



0.202** 



2.99 



15** 



19 .4** 



A/sand 







86 



6.24 



0.097 



2.48 



26 



6.1 



A/sand 



20 



88 



7.09 



0.185** 



2.85 



15** 



12.9 



A/B 







74 



5.14 



0.175 



3.18 



18 



9.0 



A/B 



20 



81 



6.32 

 Harvest 3 



0.182 



3.31 



18 



11.3 



A/sand 







40 



2.18 



0.067 



2.09 



31 



1.5 



A/ sand 



20 



66** 



7.87** 



0.132** 



2. 21 



17** 



10.0** 



A/B 







68 



8.32 



0.130 



2.23 



17 



10.7 



A/B 



20 



60** 



8.38 

 Harvest 4 



0.135 



2.16 



16 



11.2 



A/sand 







37 



1.12 



0.037 



2.75 



74 



0.4 



A/ sand 



20 



62** 



6.39** 



0.120** 



2.01** 



17** 



7.6** 



A/B 







61 



4.71 



0.112 



2.03 



18 



5.3 



A/B 



20 



48 



4.07 



0.125 



2.09 



17 



5.1 



All values are the means of four replications, 



Significantly differs 

 levels, respectively. 



' Significantly different between S treatments at the 0.05 and 0.01 



