Table 18. Third-year effect of niti>ogen and phosphorus fertilizers 

 on the short form of Spartirm altemiflora at Oak Island 

 C30 Sept 1974). Plots 4 by 50 feet, three replications. 



N rate 





P rate 







(kg/ha) 





(kg/ha 



) 









Aerial dry weight 





. 









(kg/ha) 



Flowers/m'^ 



No. culms/m'^ 









74 







74 







74 





















4,453 



4,240 



16 



13 



527 



445 



168 



10,080 



10,813 



56 



41 



557 



476 



336 



10,813 



14,667 



24 



53 



512 



401 



672 



13,973 



21,667 



47 



43 



447 



445 



Average 



9,830 



12,847 



36 



38 



511 



442 



LSD:^ N 0.01 





4,786 



*3 







*3 



0.05 





3,448 



24 







*3 



P 0.01 





^3 



*3 







*3 



0.05 





2,438 



ns 







ns 



CV'* (%) 





24.6 



52.7 







20.9 







Basa 



1 area 









Height (cm) 



(cm 



Vm2) 



Salini 



ty (ppt) 





74 







74 







74 







58 



57 



96 



141 



26 



26 



168 



102 



109 



223 



241 



26 



26 



336 



97 



125 



252 



230 



25 



25 



672 



129 



135 



274 



314 



25 



25 



Average 



97 



107 



211 



231 



26 



26 



LSD:2 N 0.01 





30 





83 





*3 



0.05 





21 





60 





^3 



P 0.01 





.3 





*3 





^3 



0.05 





^3 





^3 





*3 



CV't (%) 





17.0 





21.9 





4.0 

















1. Fertilizer applied 13 May, 19 June, and 19 August 1974. 



2. Least significant difference. 



3. Not significant. 



4. Coefficient of variation. 



65 



