Time and again native growers have told me of the large and uniformly
continuous crops of nuts from the trees immediately overshadowing their
dwellings and, although some have attributed this to a sentimental
appreciation and gratitude on the part of the palm at being made one
of the family of the owner, a few were sensible enough to realize
that it came of the opportunity that those particular trees had to
get the manurial benefit of the household sewage and waste.
Yet, the lesson is still unlearned and, after much diligent inquiry,
I have yet to find a nut grower in the Philippines who at any time
(except at planting) makes direct and systematic application of manure
to his trees.
In India, Ceylon, the Penang Peninsula, and Cochin China, where the
tree has been cultivated for generations, the most that was ever
attempted until very recently was to throw a little manure in the
hole where the tree was planted, and for all future time to depend
on the inferior, grass-made droppings of a few cattle tethered among
the trees, to compensate for the half million or more nuts that a
hectare of fairly productive trees should yield during their normal
bearing life.
Upon suitable cocoanut soils--i. e., those that are light and
permeable--common salt is positively injurious. In support of this
contention, I will state that salt in solution will break up and
freely combine with lime, making equally soluble chlorids of lime
which, of course, freely leach out in such a soil and carry down
to unavailable depths these salts, invaluable as necessary bases
to render assimilable most plant foods; and that, on this account,
commercial manures containing large amounts of salt, are always to
be used with much discretion, owing to the danger of impoverishing
the supply of necessary lime in the soil.
Finally, so injurious is the direct application of salt to the roots
of most plants that the invariable custom of trained planters (who,
for the sake of the potash contained, are compelled to use crude
Stassfurt mineral manures, which contain large quantities of common
salt) is to apply it a very considerable time before the crop is
planted, in order that this deleterious agent should be well leached
and washed away from the immediate field of root activity.
That the cocoanut is able to take up large quantities of salt may not
be disputed. That the character of its root is such as to enable it to
do so without the injury that would occur to most cultivated plants
I have previously shown, while the history of the cocoanut's inland
career, and the records of agricultural chemistry, both conclusively
point to the fact that its presence is an incident that in no way
contributes to the health, vigor, or fruitfulness of the tree.
Mr. Cochran's analysis, based upon the unit of 1,000 average nuts,
weighing in the aggregate 3,125 pounds, discloses a drain upon soil
fertility for that number, amounting in round numbers to--
Pounds.
Public-domain text, read in full here on John Shaqi.
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