

,^-^ 





FIGURE 37. Several 2-year old 

 planted 0.5 m apart. 



Puccinellia transplants that were 



The substrate should be completely 

 covered by these plants by May 1982. 



lie Grande 



Analysis of variance of cover data of Halimione and Puccinellia 

 transplants 1 year after planting on a disturbed site at lie Grande 

 indicated a significant response to fertilizer materials (Table 9). 

 Best growth as measured by cover was achieved by both species in the 

 Mag Amp + Osmocote 3 treatment (Table 9, Figs. 38, 39). Cover of 

 Halimione transplants in this treatment was significantly higher than 

 that of transplants in any other treatment except for the Osmocote 8-9 

 (estimated to last 8 to 9 months) + concentrated superphosphate 

 treatment. The cover data for Puccinellia transplants indicate the 

 advantage of slow release over conventional fertilizer materials at 

 this particular site. Apparently leaching of the conventional 

 fertilizer materials was a problem because of the coarse sandy 

 substrate in this planting. Significantly greater cover of Puccinellia 

 was produced by the slow release fertilizer treatments than by ammonium 

 sulfate + concentrated superphosphate except where the rate of ammonium 

 sulfate was doubled (5.6 g N per transplant). 



Differences among the cover values of the Triglochin transplants 

 are meaningless except to document the poor growth by this species 

 under all experimental treatments. The response by Triglochin in the 

 particular experiment is representative of its response at several 

 experimental sites and is the reason for our decision to delete it from 



398 



