The Mankato free press. [volume] (Mankato, Blue Earth County, Minn.) 1879-1924, 1922-12-29
CORN TESTS Will
PROVE TWO TYPES
Special Study Of Flint ana
Dent Varieties
REASON FOR WORK
Efforts To Find Out why Old
Efforts To Find Out why Old
World Prefers Argentine
Grain TO That of u. S.

y .e
Washington, ID. @. December 2s-
IN an effoft to deternine the reason
for the Reference Of European
Countries Tor Argentine or flint
corn to the corn produced in the
United States. the department OF
aglio .iIture through its bureau OF
Gle istry is undertaking an exten-
|siys Investigation. According to w.
U. ampbell, acting chief chemist
the f1vestisa alton will be conducted
though laboratory on crop chem
lstr& recently established, which
will sleterniine If there are any fun
fiaMf entail chemical differences in
ii y 1.onpGsition OF flint or hard corn
anrtlle sent corn largely produced
III the United STATES.
lie laboratory will undertake
atlules on the composition of agri
cllitnEal crops in a fundamental way.
Aaulilonal work viii be carried on
colI0%fnlng the influence OF envi-
fohAte AT on the chemical compost
ION OF csopS, including certain fea-
s{sles OF fertilization, such as the
ltlAtion OF chemical composition
Llst yIo0d value OF crops to the time
fertiliZer application. Previous
OK has been directed chiefly to
fKfp the quantity viewpoint. The
s'sw work will be directed to quail
Fertilizer Benefits Crop
Is Known, for instance" says
Campbell, "tnat the application
e.. tain Fertilizer to crop like
{ 81 q VIII increass The yield quaint
<tIff However, practically no
II, a s IS Known ABOUT quality rela
t9ns; that is, whether the pro-
GINS, vltAailnes, or mineral COM
9neAts or the corn fortified in such
way are better suited to animal
aeo nilrilan nutrition than those of
sttsi stlslz6d corl, VarieIal differ
|fncas will be studied from chem
.saE standpoint
One of the most important re-
ssafches now unler way Is that up
|Su vegetable prLtsins. Inasmuch as
nitrogen is an cSS ential part of ami
mai tissues and the animal can OBJ
<alD this necessary nitrogen only
8 the form OF protein in its food. 1t
obvIoQH that this class of feeds is
L19Eae importance. This research
S vol VS. the very essistence Of all
animals and is inseparably connect
ed with the field of nutrition.
Proteips Differ Now
Until quite recently one kind
of protein In a diet was cosidered
as good as another. Today we know
that one protein differs from anoth,
er. protein in certain fundamental
constituents called amino acids, of
which all proteins are composed.
Some of 9the amino acids are alb
solutely essential for nutrition, for
without them animals will not grow.
but will soon fail and die. The bro
tein in corn is deficient in two es-
sential amino acids, tryptophane.
and lysine. A young animal on a diet
having its sole source of protein de-
rived from whole corn will not grow
and develop properly. However, If
the protein in corn is supplemented
by the addition in the right pro-
portion of certain other proteins.
the protein of the mixture will then
be adequate for normal growth. 1t is
essential not only to know whether
in themselves they are adequate for
the needs of the animal but also to
know when they are deficient, what
other proteins, and in what proper
ton, must be added to supplement
the deficiency. The percentage of
nitrogen alone cannot therefore any
longer be regarded as an index of
the protein value of a feeding stuff.
The amino acids of the proteins
of several agricultural products
have been separated and studied,
with the result that 1t is now pos
sible to supplement such basic feed
ing stuffs as corn with small guam
titles OF other feeds, such as peanut
meal, soy bean meal, and cocoanut
press cake, which contain the very
amino acids corn lacks, thus MAX
ing a feed that will supply all, the
amino acids necessary for growth.
The practical results of this should
be a greater and more profitable
utilization Of our largest cereal crop,
corn"
Work now in progress includes
investigations of the protein of
wheat bran, in which method has
been developed by which over 80 per
cent of the total protein in bran
may be extracted; of cotton seed,
of peanuts, of cantaloup seed, of
soy beans, of palm kernel meal and
of lentAs. Research on the protein
in tomato seed, over 1000 tons of
which are discarded annually as a
by product of the tomato pulping
industry, show that by utilization of
this by product for feeding purposes
the conservation of valuable feed
can be accomplished.