Atlanta semi-weekly journal. (Atlanta, Ga.) 1898-1920, 1911-06-20


they will not be resistant. BY meth
DDS OF seed selection and the develop.
ment of immune strains. this disease
may be held in check and virtually eradi-
Gated from many localities. This Will
be made much easier of course if cotton
lis not brought on the land every year,
and every farmer should institute crop
rotation system which should enable
him to bring cotton on the land, say
once in three years, thus helping %
starve out and destroy the spores. A
rotation OF crops is one Of the very
strong points in fighting this pest. The
spraying OF the cotton fields with Por-
ldeaux mixture would no doubt be OF
some value. but Investigations with ref
erence to this matter have not been car
ried out as vet, and the treatment can
not. therefore, be recommended at this
time The treatment of the seed with
hot water, blue stone or formalin in a
manner similar TO that employed IN
protecting grain from smut is strongly
recommended. and is now being pracueed
by a number Of leading farmers. Ii is
also employed more or less by our cx-
pertinent stations and Investigations. OF
course, where this treatment is pursued
great care should be taken to prevent
the reinfection Of the seed by putting
them in houses where. diseased seed has
already been stored. and if there have
been a large number of plants attacked
In the field on which the seed is sown'
the fungus may do as much damage
after the treatment as before. These
facts should be borne in mind.
1t may be said in passing that the col
lege of agriculture has been invesugat-
ing this problem and has variety call
ed Sunbeam which is thought TO be re-
sistant to anthracnose. Seed of this
variety has been distributed to some "a
farmers in the state so that its resist
ance may be thoroughly ascertained, and
III IL withstands the test now imposed.
considerable quantities Of the SEED
should be available for distribution an
other year. Where seed is selected Tor
resistance at home IL should be ginned
by hand, so as not TO take the chance or
having II reinfected by passing ~
through a large ginnery where all kinds
OF seed are received. This is very
important matter
In conclusion, therefore, in fighting
this trouble, crop rotation, the disinfec-
ton of the seed before planting, the Sc
lection of resistant strains, the destruc-
ton of diseased plants and parts OF
plants. and the ginning of the seed at
home are points to be emphasized. As
the development of resistant strain Is
a very difficult undertaking, this work
had probably best be carried on by
state Institutions endowed with speclai
funds for work of this character. since
anthracnose does anywhere from $780,
oOO, 600 to s25.00O,0o0 worth Of damage
in Georgia annually, an investigation
into the production of immune strains
liz a matter OF general concern 10 tne
farmers OF the state.
GROWING CORN AFTER CoWPEAs'
l. A. l.. Crystal Springs. Ca, writes'
From reading government bulletins / see
thev suggest for corn following copwea
stubbIe' or b crop OF weeds, fertfllzel
Analysing S per cent phosphoric acid.
per cent nitrogen and II per cent potash.
This is so different from what Is gen
orally used in this locality that | feel
some hesitancy in using 1t without your
opinion. Some Of the land is upland with
a red clay subsoil. containing some SAND.
The balance is sandy bottom land.
The growing of cowpeas always tends
tn enrich the soil, even though the crop
he cut OF for hay. of course, one should
not lose sight of the fact that the greater
part of the nitrogen in the cowpea crop
is in the leaves and stems and not IN the
roots The fertilizer should be used 1or
corn after cowpeas, unless the land has
UEGU A0-~1
erop rotations, should be high grade in
character and which will supply 1t with
All the essential elements. do not
know Just what literature you have been
reading. bat il seems as il there must
have been an error in 1t. We Judge that
ii Is more likely that II per cent Of phos-
phorus has been suggested rather than
II per cent of potash. At least the form
uIa we would advise under the circum-
stances is a 1855 for corn. At least 6OO
pounds should be used per acre, and You
can probably use 200 pounds as side
application to good advantage. The char
acter OF growth made by the crop viii
determine whether 1t is well TO use nj
trate of soda as top dressing when the
corn is silking and tasseling or not. OF
course. all fertilizer win give better re-
suits on land that contains a fair amount
OF vegetable matter, and the sander the
land the more important this becomes.
For cotton on these lands probably 800
pounds of the above fertilizer would be
found quite satisfactory.
SOY BEANS FOR GRAZING HOGS.