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FIGURE 37. Several 2-year old Puccinellia transplants that were
planted 0.5 m apart. 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 +
Halimione
Osmocote 3
transplants
treatment (Table
in this treatment
9, Figs. 38, 39).
was significantly
Cover of
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
substrate in this planting.
a problem because of the
Significantly greater cover
coarse sandy
of Puccinellia
was produced by the slow release fertilizer treatments
sulfate + concentrated superphosphate except where the
than by ammonium
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