Table 20. Effect of nitrogen and phosphorus fertilizers in second- 

 year growth on seeded Spavtina altemiflora at South 

 Island (Drum Inlet). Plot size 4 by 25 feet, three 

 replications. (Seeded 18 Apr 1973, sampled 25 Sept 1974) 



N Rate 

 (kg/ha/yr) 



P Rate 

 (kg/ha) 









74 







74 







74 







74 







74 



























Aerial 



Dry weight 



(kg/ha) 



Flowers/ 

 m2 



No. culms/ 

 m2 



Hei 



ght 



Basal 

 area 

 (cm^/m^) 







1,367 



2,030 



139 



215 



304 



410 



53 



65 



42 



58 



168 



2,940 



5,170 



208 



414 



393 



760 



66 



83 



76 



130 



336 



2,503 



6,717 



160 



419 



321 



811 



69 



89 



56 



180 



672 



3,323 



10,333 



212 



376 



450 



814 



74 



88 



97 



237 



lsd2 















N 0.01 



2,065 



*3 



3 

 * 



*3 





*3 



65 



0.05 



1,488 



182 





15 



47 



P 0.01 



1,460 



104 



179 





15 



46 



0.05 



1,052 



75 



129 





11 



33 



N X P 















0.01 



2,920 



*3 



*3 





*3 



*3 



0.05 



2,104 



*3 



*3 





*3 



66 



CV%'+ 



28.0 



31.9 



27.6 





16.4 



34.4 















1. Fertilizer applied 30 April, 5 June, and 31 July 1974. 



2. Least significant difference. 



3. Not significant. 



4. Coefficient of variation. 



68 



