Page 84 - 00 Volume 5 The Mine

Maku Lotus 2 phosphate; the greater reaction to phosphate in
White Clover 2 Diammonium Phosphate, rather than
Seed Mix 3 Superphosphate, is caused by the higher
Ruanui Ryegrass 36 percentage of phosphate available in
Maku Lotus 2 Diammonium Phosphate. Top Crop Red contains
White Clover 2 a similar rating with potash replacing phosphate.
An inspection of the trial plots showed the
Fertilizer 1: 2.5 tonnes/hectare Lime most striking success of the grasses sown was
Fertilizer 2: 7.5 tonnes/hectare Lime that of clover and maku lotus, which are the
Fertilizer 3: 750 kg/hectare Super species best suited to low fertility soils. As the
Fertilizer 4: 125kg/hectare Diammonium fertility increases, the clover would eventually
Phosphate take over from the lotus and eventually the rye,
Fertilizer 5: 187kg/hectare Top Crop Red
fog and browntop would establish themselves.
Each of these last three species had germinated
Conclusions Reached from Grass Trial Plots
and of these, the rye was the most prolific.
The trial plot was set up to test the Examination of the trial plots failed to

following: locate any germination of the paspallum and
Types of grasses that will establish cocksfoot species, which apparently are not
suitable to the initially low fertility soils.
themselves on the soil present;
The effect of high and low rates of TREE PLANTING SPECIFICATIONS
application The following specifications covers the
of lime; supply and planting of the listed trees. No
The reaction of grasses to the addition planting plan as such is provided as all planting

of will be located and supervised on site by the
phosphates (Diammonium
Phosphate) and Potash (Top Crop Landscape Architects

Red). GENERAL
Works included within this specification to
Soil samples taken from the vicinity of the cover the planting of disturbed areas and areas of
test plots gave the following results: Ph 5.1, Ca 6, overburden and strippings as directed by the

K 11, P 4, Mg 60. landscape architects. Generally there will be no
Plot 13 was sown without the planting on batters steeper than 2:1.
application of Diammonium Phosphate or Top The planting programme is the first stage
Crop Red. Overall growth of grasses was poorer in an experimental vegetation project. Thus
than the rest of the plots with very little initial the areas and distribution of planting will be
clover growth. determined on site.
Only one plot demonstrated a reaction to the No planting is to be carried out in any
high rate of lime addition. This was Plot 1, areas until approval to proceed is given by
which, at the time of inspection, had not reacted landscape architects.
to the lack of rain to the extent Plot 2 had. The
lime tends to condition the soil and promote an SUPPLY OF PLANTS
improved structure in the soil which aids water
retention. The trial plots do not conclusively show The following forest tree lines are required:
the advantage of the higher rate, but as the cost of
lime is not high, the higher application rate was 3000 Pinus Radiata
chosen. The other beneficial effects of the lime is 2000 Eucalyptus Regnans
in breaking down some of the clays in the soil, 1000 Eucalyptus Delegatensis
which would improve the effect of the second
cultivation prior to seeding. This was the reason The following nursery grown stock is
for applying the lime at least two months prior to required. All plants to be supplied in the
1
seeding. equivalent of 2 /2 inch pots:
In most plots, the reaction to Diammonium
Phosphate was greater than that to Top Crop 100 Acacia Dealbata
Red. Accordingly, Diammonium Phosphate was 100 Acacia Longifolia
chosen as a convenient source of additional 100 Acacia