TABLE 3 

 Response of American Beachgrass to Phosphorus - Hatteras Island 

 Treatment lb/acre 



Yield, 



, lb/ 



acre 



(dry 



weig 



ht) 



1962 





1963 



406 





302 



1273 





1505 



1580 





21 15 



Apr Jun Aug Sep 

 Check 



N 33 33 33 33 



NP 33 33 33 33 



(plus 50 lb P 2 5 in Apri I ) 



TABLE 4 



Response of Saltmeadow Cordgrass to Phosphorus - Ocracoke Island 



(Fertilization Initiated Fall of 1963) 



Treatment Yield, lb/acre 



(dry weight) 

 N lb/acre P 2 5 lb/acre K 2 lb/acre 



May Jul Sep 



2,431 



33 33 50 — — 5,984 



33 33 50 50 — 10,125 



33 33 50 50 50 9,339 



The American beachgrass site is on a dune which probably has received 

 some fresh sand in recent years. The cordgrass is on a flat some distance 

 from the beach where there was much less likelihood of sand accumulation, 

 and probably represents sand that has been in place and subject to weather- 

 ing for some years. 



The data in Table 5 are from an experiment initiated in the spring of 

 1965 and show first-year response of freshly planted American beachgrass. 

 This table shows the same type of response found in earlier experiments but 

 the magnitude of response on newly planted material was much lower. This 

 is probably partly due to the fact that the planting stock used was well 

 fertilized in the nursery, and therefore, contained good levels of these 

 nutrients when transplanted. It does show that fertilization the first 

 season after planting is beneficial. 



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