Middlebury register. (Middlebury, Vt.) 1886-1937, 1896-01-31
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Fl!E.L!.RssNp CRRpEN
ECONOMY WITH FERTILIZERS.
Statements of All Eminent Authority on q
Question of widespread Interest.

ECONOMI WI n rem lLl[EhO.
Statements of All Eminent Authority on =
Question of Widespread Interest.
The low prices of farm products have
made it necessary to use the utmost
economy in all farm operations, but
economy in the wrong place is often
waste Of money. In this connection
American Cultivator calls attention to
an article by Professor Maercker, direct
or of the experiment station at Halle,
Germany
Professor Maercker takes in order the
four elements of plant food-viz, potash,
phosphorio acid, nitrogen and lime. He
inquiries whether it is possible to save
by using less quantities Of any of these
ingredients than the farmer has done
heretofore.
With regard to lime Professor Maerok-
er says this material should by no
means be discontinued or limited. Where
lime is necessary it should be used. He
recommends only slight change of the
system of applying lime. He recon-
mends to use smaller doses of lime and
frequent applications rather than large
applications intended to last for several
years. 1T would be highly detrimental
to profitable agriculture, he says,
"even at the present time of low mar
ket prices, to reduce the ordinary appli-
cations of lime and mari where they are
needed. "
Professor Maercker arrives Mt q SINH
lar conclusion with regard to nitrogen.
He reviews the subject very thoroughly
and shows ON the whole that too little
rather than too much of this costly elo-
ment is used. Therefore not to use nitro
gen where it is needed means to cut
short the crop and is false economy
Professor Maercker pays attention to tho
Importance of green manuring, whereby
nitrogen is obtained from the air in or
binary rotation of crops or by planting
legumes to he plOwed under. OF course
it is not possible to dispense altogether
with the artificial application Of Iitrog
enous fertilizers, and in certain soils
judicious rotation and green manuring
are not always practicable. and hence all
artificial supply Of nitrogen must be
given.
With phosphoric acid an entirely diff
ferent state of affairs must be faced
Professor Maercker presents figures and
facts concerning quantities Of phOsphOr
ic acid which are generally used by
farmers upon various crops. He is posi-
tive that phosphoric acid is usually sup
piled in larger quantities than required
by plants. Therefore farmers can afford
to reduce the amount of phOsphoric acid,
and where an overSupply of this ingre-
dent has been given for some years its
use may be dispensed with for soma
time. 1t is, moreover, wasteful to apply
phosphoric acid i'll larger quantities than
can be taken up by the crop which it is
intended to benefit and the ensuing
clover crop.
The use of potash in farming is dis
cussed and at length By Investigations
which are confirmed in practice it has
been shown that on a certain soil about
twO-thirds of the total amount of potash
applied becomes directly available to
plants. Upon u sandy soil i'll a common
rotation, consisting of rye, oats, potatoes
and clover, an average amount Of about
GO pounds of potash per acre is needed
annually, even including certain
amount Of potash supplied by tho Gus
tomary application Of stable manure.
This quantity, Professor Maercker says,
is absolutely necessary in order to keep
up the productive capacity of a sandy
soil. If less potash be supplied, tho yield
of crops will fall off. Moreover, the in
telligent use Of potash salts has become
one of the most important factors i'll ag-
riculture. 1t has been proved that by
the system Of green manuring and pot
ash-phosphate fertilization, even on tho
poorest soils. most remarkable yields
farm crops can be obtained. But it II
only possible to reap the full benefit e.
this system if enough potash he supplied
to the soil.