TABLE 4. Survival of two types of transplants of three species 1 and 2 

 years after planting (May 1979) averaged over all locations 

 on more favorable sites. 



Survival (%) a 



Species May 1980 May 1981 



Sprig Plug Sprig Plug 



Puccinellia 



Juncus 



Spartina 



a There were 379, 120 and 50 transplants planted of each type for 

 Puccinellia , Juncus and Spartina , respectively. 



Except for Puccinellia transplants, these survival data from May 

 1979 plantings are not impressive. We were in the process of learning 

 where to plant with regard to elevation, the best type of transplant to 

 use, the appropriate species, whether spring was better than fall 

 planting, and how to satisfy the nutrient requirements of the 

 transplants with fertilizer materials. Survival data for the May 1980 

 plantings indicate a significant increase in survival over those of the 

 earlier plantings (Table 5). These results indicate that we were 

 making progress and that except for Juncus , survival values greater 

 than 50% were achieved for all species tested. The seemingly erroneous 

 survival value for Halimione 4 months after planting is due to 

 aboveground material appearing dead but the underground material being 

 alive and giving rise to new aboveground growth the following spring. 

 A decrease in survival overwinter of greater than 14% was only noted 

 for Juncus which experienced a 41% decrease. Spring appears to be a 

 better season to transplant than fall but the data are incomplete at 

 this time. 



Type of Transplant 



The best comparison between sprig and plug transplants of 

 Puccinellia from our experiments is the data from Kerlavos where cover 

 and survival were higher for plug transplants except for the 

 conventional ammonium sulfate + concentrated superphosphate treatment 

 where the cover of sprigs was higher than that of plugs (Table 6, Fig. 

 33). The reduced survival for both types of transplants and especially 

 sprigs in the ammonium sulfate + concentrated superphosphate (2.8 g N + 

 4.1 g per transplant) treatment was due to a small depression without 

 exterior drainage which occupied a portion of this treatment and in 

 which transplants did not survive (Fig. 33). Increased salinity due to 

 evaporation or waterlogged substrate conditions due to prolonged 

 ponding could have contributed to the reduced survival of this 

 treatment. Although this drainage condition was restricted to a small 



392 



