Atlanta tri-weekly journal. [volume] (Atlanta, Ga.) 1920-19??, 1921-07-21
GLASSES MIXTURE TESTED
IN FIGHTING BOIL WEEVlL
RY q, e, COAD

ELIZA LABORATORY, TALLU-
|, La, July 20.-During the past
weeks there has been consider
interest in certain portions of
cotton belt relative to the pos
Ety of poisoning the cotton boil
I'll by using a mixture of mo-
Fs, calcium arsenate and water.
ferrous inquiries have been re-
I'D concerning the efficacy of
a mixture, and so many reports
noted of excellent results being
red in field use that it was deem
desirable to give the question
Pr serious consideration. No eX-
hents had been conducted by the
|rtment of agriculture with this
ocular mixture, but years ago
erous tests were conducted to
mime the possibility Of attract
(weevils with a large number of
It's, including molasses, and the
is were generally negative, al
gh there were few instances
very slight degree of attraction
Z shown. In view Of these re-
! it had seemed useless to con-
any further tests along this
until the present interest de-
bed.
first series of tests consisted
kge studies comparing the weevil
3ality on plants treated with the
sses mixture, plain busted cal
arsenate and also imprisoned
< plants. Various concentrations
amounts of the molasses mix
were tested and the entire series
repeated five times. In all a
of eighty-six different cage
involving the use of about
! weevils, were included in these
5. The first test conducted
+ ed the average mortality pro-
b by the molasses mixture to
kactly the same as that of dust
$alcium arsenate. The second
Z ed the busted calcium arsenate
superior, while the third series
Ehted about an equal superiority
3 g molasses mixture. The fourth
was slightly in favor of the
I'D calcium arsenate while the
showed the two preparations
ave about an equal degree of
j ity. The average Of the entire
showed the mortality in all
treated with busted calcium
late to be exactly the same as
4 in. the cages treated with the
sses mixture.
Little Difference Found
BITS of different amounts Of the
Fses mixture and also variations
be distribution over the plant
ed practically no relation be-
these variants and the reSul-
s mortality. In other words, the
Dill mortality was practically as
in the cage receiving the light
Iosage as in those receiving the
Hest.
e next series Of tests were con-
I'D on more nearly Il field basis.
the purpose Of these tests five
s of cotton were treated with the
sses mixtures, the next five
busted calcium arsenate and
|next five left untreated as a
These three conditions were
] ted three times in each eXpri-
thus making a total of fifteen
receiving each type of treat
in each test. The entire test
repeated four times under diff
1t field conditions. Aftec the
#ment these rows were examined
fully once a day for three days.
ne nu1nDer OIL i've WeeNllS lOE =
Ech row was carefully noted. The
series showed a very definite
FOL reaction for the molasses
&lre and indicated that much
Fit had been derived from the ap-
&tion. Of the remaining three
g, however, two showed more
zality in the rows treated with
zum arsenate than in those treat
nth the molasse mixture. In
our series as whole there is no
ing difference between the diff
1t treatments.
secure a still further check
this subject a series of field
#tests were started, uniform cuts
surveyed. divided in half and
half treated with busted CAL
arsenate while the other was
Jed with the molasses mixture.
E tests are still under way, but
results TO date are Of interest.
#tentral 10 rows in each plat have
examined daily and the number
I've weevils found on them care
noted, as well as the percent
of SQUARES punctured. To date
lave. found NO definite difference