The Manning times. [volume] (Manning, Clarendon County, S.C.) 1884-current, 1906-09-05
WILL KILL THEl[
NEW PROCESS OF DESTROYING
TIE BOIL WEEVlL.
knimalculae are Killed by a Kind
of Vaccination Of the Cotton
Plant.

-
United States bulletin issued Wed.
nesday by the Department Ct Agri
culture en- prolferation as factor in
tie patura] control Of TIE cotton boil
weevil, will prove an interesting AND
entertaining study. P:olferat1on IS
The manifestation Of tendency OF
plant cells to respond to irritation
by multiplying or forming new cells.
This manuscript was prepared by
DR.. W. e. Hines, special field agent
It represents the result Of long study
Of the proliferstion in Gbe squares ano
bolls Of cotton by msaus OF which q
certain percentage Of weevil larvae
are killed. It deals with practical
statement OF the effect Of this forma'
tion Of loose tissue cells upon the boil
weevil, based upon large number o.
observations made by the bureau OF
entomology.
In order to determine whether pro-
liberation caused the dehth OF larvae
by starving them, numerous expert
ments have been performed, mostly
In Texas with king and other 9arie'
ties Of cotton that are largely planted
throughout the South. o .hatcaed
eggs and larvae just hatched have
been placed in the midst OF masses OF
purely pEoli.ercus formaticn, and
these have bsen kept In tight, moist
chanbe and transferred to fresh mas.
ses OF proliferation a: requently as
necessary to preserve proper cono1'
tions for the larvae. Ia spite CT these
frequent transferrences and the some
what unnatural conditions necessary,
IL was und that but snail proper
tion Of the larvae died. 10 one series
OF experiments eight very young lar
vse were placed in fresh prolif3rous
masses. OF these, one died on the
first day, but all others reached ful;
growth and pupated normally IN from
nine 30 twelys days, having fed on
nothing but proliferuus material.
Pcoljferation usually begins in the
layer Of the cells a6j jolning the thin,
tough lining within each section OF the
DOLL. By far the greater part OF this
formation prcj cts through, tae rup.
ture made by the w.evil in the tough
lining and forms q rather hemisphe r.
cal mass protruding from the inner
side Of the csrpel aud pressing into
the lcck. The formation times,
5hopgn rot alvsys, beg.ns before the
Matching OF the egg, wnica may oe
mov d q lite a distance, In some cases:
! by the pressure Of the mass behind 1t.
Ia other casa; the egg becomes en-
yeloped and the larvae hatches into
tie rrol.terous mass. In such cases 1t
| nay be destroy eG early in lefe, though
it will often make its way into the
lock, eatirg It's way as 1t goes. As 1t
feeds, the laryss is continuously iDjur
!pg and irritating tissues capable o,
prul,fcration, witch thus becomes
started all rouod the larvae aud grad.
uslly pushes upon it from all direc.
lions. It may happe2 In this way that
The space which tie larvae has eater
cut as it grew becomes filed by tht
masses Of cells pushing 1t upon ant
larvae can not possibly eat away tht
'orning mass rapidly enough to pre-
serve room for itself to move. Thougl,
it may be nearly OF q1ite full growc,
It can not escape from its narrowing
,riscn and soon becomes so closely en-.
tsloped as to be unable to move in any
li1sclion. 1t is then an easy vicdm
:or the .e:sntless pressure Of forming
cells and is literally crushed to death
its p-;so2.
In al cases, whatever the stinu-
ami, one factor Is uniformslly essen.
.ial. There must be a cell injury
zn.c1 is not sun GENTLY severe tc
overcopae im nsola ;si5 she vital force
of :he Il jured Gfgan or tls. u. Pfoh
terari-n IS simply the manifestation
II tendency Of plsnt cells to-respone
tu Irritation by mu.4lli5 ing or firm.
ing new re Il. It Is simply a neshco
# sci deense, and In the case OF cot
.nn,ethe irritation appears to be II
nsarl5 al cases stllcuy mechanical
he urc5ion tf proliter2tion in nosl
c.ses Is undoubtedly to repair an in
jury. P;oilf r us tissue iscnot tox.e
- Eesv:ls. Dss:h results In most
cases IN mechanical way from simple
pressure.
Black ScoundreL