The fiber content would be slightly higher and the water content lower,
for tropical cane, since maturity is completely reached before harvest
begins. It may be seen from the above analyses that this makes a most
excellent feed for work animals. Certainly greater advantage should
be taken of this feeding stuff than is usually done, since there is
a scarcity of pasturage near the end of the harvest season and the
animals become needlessly thin on account of lack of feed. At present
very little of this material is utilized, but instead is burned on
the field with the rest of the trash. If the tops are removed and
used as a stock feed, only the leaves and pieces of stalk remain,
and these make a good fertilizer for cane lands.
It is the general custom in these Islands to burn all of this material
as soon as the crop is harvested. The object of this burning is to
destroy any insects that may be present, as well as to facilitate
subsequent cultivation. In the writer's opinion neither of these
reasons is sufficiently well based, since in this country large numbers
of troublesome cane insects are not found. If they were present in
sufficient quantities, the trouble could be handled by placing the
trash between the rows and properly treating it before plowing it
under. This should be the method of disposing of the trash at all
times. In this manner the waste material could be utilized, and the
organic matter would be even more valuable than that contained in
many of the commercial fertilizers. The nitrogen contained, which
amounts to from 0.5 to 2 per cent, would be practically all saved,
while with the burning method this is completely lost.
In Louisiana, cotton-seed meal forms one of the principal nitrogenous
fertilizers for cane lands. This material costs from P50 to P75 per ton
and Dr. Stubbs, [4] in his research, found that the trash burned from
each ton of cane caused a loss of nitrogen equal to that contained
in 27 pounds of cotton-seed meal. Besides this loss of nitrogen
encountered in the burning of the trash, the organic matter which
would later form humus is completely destroyed. Soils would retain
moisture better during the dry season and be more easily handled if the
conservation of organic matter were given greater attention. There is
also a great injury done to the remaining stumps and top roots by this
burning which is very detrimental when the field is to be used for a
ratoon crop. Where cane is badly infested with destructive insects,
it is quite another thing. This again brings up the fact that the cane
points should be treated with chemicals before planting, in order to
complete the work of destroying these insects.
Use of Ashes.
Public-domain text, read in full here on John Shaqi.
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