further consideration as a desirable species in our rehabilitation 

 efforts. 



The relatively high survival of all three species indicates a 

 marked improvement in our selection and handling of transplants as well 

 as the selection of a favorable planting site. These survival 

 percentages were based on 135 transplants per species in this 

 particular experiment. The high survival of Puccinellia transplants 

 coupled with the relatively high cover values as compared to those of 

 the other two species indicates that our emphasis on this species is 

 justified. 



Analysis of variance of cover data indicates that the Osmocote 8-9 

 slow release fertilizer material maintained the original cover of 

 Spartina transplants at planting with very little growth through the 

 first year (Table 10). Transplants in the control and ammonium sulfate 

 + concentrated superphosphate treatments decreased in cover over the 

 first year. Although growth was not good, survival of these and other 

 1980 Spartina transplants was consistently above 80% (Table 5, Figs. 

 40, 41). Growth of this species has been very slow in all our 

 experimental plots but because it can occupy lower elevations than most 

 of the other species, we plan to continue to experiment with it on a 

 limited scale. 



TABLE 10. Cover and survival of plug type Spartina transplants in May 

 1981 for three fertilizer treatments at lie Grande; planted 

 May 1980. 



a Cover of a plug transplant at planting was ca. 25 cm 2 . Standard 

 error of difference among equally replicated treatment means = 6.1, 

 n=6. 



" There were 15 transplants per treatment planted. 



c Source of P was concentrated superphosphate. 



d Source of additional P was concentrated superphosphate. 



401 



