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ntative expedient.
The ground will now be so shaded that we can not hope to raise more
catch crops for harvesting, although it may be possible during the
dry season to raise a partial stand of pulses, of manure value only;
but, from the fruiting stage on, this becomes a minor consideration.
This stage of the cultural story brings us once more face to face
with the principle contended for at the beginning of this paper,
namely, that there can be no permanent prosperity in this branch of
horticulture until the crop is so worked up into its ultimate products
that none of the residue of manufacture goes to waste.
At best the return of these side products is insufficient, and, despite
their careful husbandry, we can not ultimately evade a greater or less
resort to inorganic manures of high cost and difficult procurement.
The residue from the press cake is rich in nitrogen and humus, which,
in the ever-increasing shade of the grove, will become more and more
difficult to produce there through nitrogen-making agencies; but the
waste from the manufacture of coir and the ashes from the woody shell
will go far toward supplying the needed potash.
Such a system would, if closely followed, practically restrict the
farmer's ultimate purchases to a small quantity of acid phosphates,
or of bone dust, which, in conjunction with good tillage, should
serve to maintain the grove in a highly productive condition for an
indefinite term of years.
IRRIGATION.
As an auxiliary manurial agent of definite, well-proven value in this
Archipelago, I will briefly recite some of the benefits that may be
expected to follow occasional irrigation during the dry season.
It strongly accelerates growth and early maturity. A few irrigated
trees, reputed to be under five years from seed and already bearing
fruit, were shown the writer on the Island of Jolo. The growth was
remarkably strong and vigorous, notwithstanding that the water of
irrigation had been applied in such a way that the tree could only
hope to derive a minimum of benefit from its application. It had merely
been turned on from a convenient ditch whenever the soil seemed baked
and dry, at intervals of one to three weeks, as circumstances seemed
to require.
Irrigation, but always in connection with subsequent cultivation,
may be considered equal to a crop guaranty that is not afforded so
effectually by any purely cultural system.
Rarely has a better opportunity occurred
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