"ملف ٣٧/١٦أ- I تدابير مكافحة الجراد الصحراوي" [و‎‎٣‎٨‎٥] (٩٠٠/٧٦٩)

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n:OQLE 5 ‘\3T ANTI^LOCTTSTjr: IT »
Noton on iocunt o^npnignn in nporooly inhabited
.• _ . countries. ? -
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Stayo a t u hich locuntn cr^
r* . i T o practical la rye* c>:cr' 1c nothod of dealing ^ith adult
locuata ha a yet been discovered o If, og,y do p e ait a c^n be
located in tine, ah'd if labourrin^plentiful and-che^p, the
eggs can be ploughed or dug up o
As. a rule ? ; however, the onlp/ - stage against nhich a lar^e
GCr le cajnnai-^ ih..practic*a,ble in sparsely inhabited countries .
is the. hopper -s tage« . ‘ .
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leethods of killing honners o 1
Honpers can be’t—' aJ by' the did methods of beating
mith branches, burying in holes or burning. Such methods ^.re
. usually inefficient ~nd they require much labour» Trenching
particularly' con be efficient ,if zinc sheets are available, but this
method also necessitates many Labourers.
Spraying'nith crude oil is used vfhere this material c^.n
be obtained ve-r'- r cheaplyi, but it is heavy to transport
compared with -poison bait which is described be low „ Th°t is
to say one kilogram of poison bait when’properly used will
kill many mare hearners than'one"kilogram of crude oil o nd r s
: transport is a primary consideration, in locust c^rroaigns 9
especially in • •■lar time, the'poison bait method is preferable.
The Peisr,n it ! T etho d. The bait consists of some absorbent
material such'^s iheat or maize bran, or other similar
^agricultural product which is easily obtained locally, mixed t
iith ab.cuf 1 / r 5. of a poison, usually Sodium Arssenite. The
poison to pr opo r^ion'aabsorb"nt should never exc eed 2 % und er any
c ircir .stance s.
The bait is so;ictiaes prop-'-red beforehand ^.nd then dried
~nd stored, in which c^se it' onL r rcc uiros the addition cf
water to giake it ready for use. Alternatively it c~n bo made
ne^r the scene of operations as and when it is required.
Dry prepared bait must be moistened before use. A cle-n
; four gallori'potrol tin is a suitable container in which tc
mix the bait and water. About four inches of later in the
bottom of the tin is sufficient. The dry bait is then added
tc within a few inches of the ton of the tin md the ^hole
lot; is kneaded with the hands until.it is uniformly moist, but
not sloppy. Vegetable oil.such as, ; S1 ‘ lSir . 1 oil, cotton seed ci2
etc, should be iHibbed into- the -hands and forearms before
/ mixing.or using bait in order to protect the skin from the
poison. a .
U sing Po i son , 3' it. •- v - ,
Bait may "be' used against hoppers'' ;rf any age. For a day
or so after .they'emerge from the ground, ycupg hoppers do not
march, but thev sit in black clusters like 1 ±~ L€S . Jhcn they
are only a few hours old they. >111 start‘to feed ^nd so this
is. the time to 'O bis oh them. : The operator, with his tin cf
poison-bait, should approach to >ithin -3 metres of the band.
He sh aid then take a handful of bait, holding it loo sely in
his hand, arid throw it hard among the hoppers so that the bait
fa Us. tc the ground as scattered particles ;hich only slightly
-alter-the colour of the ground. r It is essential that the bait
should be spread thinly because, then the hoopers will eat
nearly all the bait ~.nd any that may be left will ouickly dr^
-, up and nix with the soil thus becoming unattractive to animals.
Thickly spread lamps bait are, .on the ether hand, mast
dangerous to ■animals. In the case cf young hoppers 10 handfuls
of bait should suffice to kill hoppers revering about 5 •
-bciut re metres. P eople al w ys tend to use too much bait , this
m ust be discouTagcd. H'p'ing. thr^n the bait, the oper't'rs
should go arid deal with the next lot of hoppers.
'Then hoppers are marching, the Tieth d is to spread a belt
of bait in front cf the ban^-and across txheir line cf march.
The direction- of march.must-first •be’n ted, but the oper-t r
must n t go so near as to frighten the hoppers and cause thorn
to. clr oge" their directi^ n. Tho ibigger herders arem re easily
frightened than the smaller :cnes -and the ,r also form bigger
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