| Broadleaves |
|
On
enriched peats
and other sites
where broadleaves
may not grow
to their full
potential,
an application
of a compound
fertiliser
(such as 10.10.20
or 18.6.12)
is recommended
at year 2 or
year 3. Ideal
broadleaf sites
seldom require
fertiliser.
There may be
situations
where phosphate
and/or potassium
are required
but it is very
questionable
if broadleaves
are suited
to a site if
nitrogen is
deficient.
If a nutrient
deficiency
is suspected
at any stage
a foliar analysis
should be carried
out. This will
determine the
type and rate
of fertiliser
required.
|
Sites 'in check'
Often on infertile
sites, even
those that
are correctly
fertilised
at planting,
trees begin
to lose vigour.
This may happen
a number of
years after
planting. To
remedy the
situation it
is necessary
to determine
the nutrient
status of the
crop 'in check'.
Foliar analysis
will be required
to establish
their nutrient
status and
determine the
type and rate
of fertiliser
required. Sitka
spruce in check
on heather
sites often
requires an
application
of nitrogen
in the form
of UREA. |
| -
- - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - |
| Reforestation and Woodland Improvement |
| In situations where a crop approaching clearfell age shows signs that it is not performing well or is losing
vigour, it is advisable to carry out a foliar analysis and economic assessment prior to clearfell to assess the nutrient status of the crop and determine the fertiliser and application rate required. |
| -
- - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - |
| Aerial Fertilisation |
| Aerial application should only be considered for sites where tree growth and vegetation growth prohibit manual application. There should be no aerial or mechanical application of fertiliser within 50 metres of an aquatic zone. Where aerial fertilising is being carried out, the Forest Service, Local Authority and the Regional Fisheries Board must be given one month's notice. A Global Positioning System (GPS) must be fitted to the helicopter and this must record and map the route where fertiliser is spread. This data must be available to the Forest Service, if requested. |
