90 to 99 percent in 3 days or less. A suspension at this dosage gave 90 
percent kill, and duet a avera at kill when applied by airplane 
and 64 percent by ground equipment. In field to bh bp-its C.5 pound 
of chlordane , 1 pound of toxapheno, 1 pound of y :on, or 0.1 pcund 
of the gamma isomer of 3HC per 100 pounds of carrier gave 10 to IS per- 
cent higher kills than 6 pounds of sodium fluosili- ate* 
Chlordane, applied as an emulsion at the rate of 1 and 1.' pc vnds 
per acre to roadside and field vegetation in Kansas, caused an average 
reduction of 84 percent in grasshopper population at the end of 72 hours 
and 100 percent at the end of 7 days. — Butcher ejb al,. (o0) . 
In testa made at Fort Collins, Colorado, in 1946, chlordane gave 
nearly 100 percent control in 3 days or less when applied as a f-percent 
dust at 20 pounds per acre, or as a spray, 2 pounds per 100 gallons, at 
50 gallons per acre. For use as a spray 1 pound of chlordane was dis- 
solved in 1 quart of xylene with 50 cc. of Triton X-100 and this then 
added to 50 gallons of water. — Weihing and Hoerner ( 485 ) . 
Aerosol formulation G-556 containing 4 percent chlordane, 5 percent 
DDT, 20 percent Freon-12, 5 percent piperonyl butoxide, arid 66 percent 
methylene chloride killed 50 percent of grasshoppers, confused flour 
beetles, and American cockroaches when they were exposed to ^J-day old 
residues of it applied at 75 mg./sq. ft. of DDT. The kill was increased 
to about 80 percent when the residue was tripled. — McBride et al . ( 30 . 5 ) . 
Reports of tests of chlordane against the f ollcvirig species of 
grasshoppers have been published: 
Aeolopus turnculll brunerl Caud., the thistle grasshopper 
Butcher e_t aJL. (6C) . 
C.amnula pellucida (Scudd.), the clear -winged grasshopper 
Arrr.itage (2£) , Hinncn and Cowan (2l8) , Parker (357). Wilson (497). 
Chcrtoicetes termlnifera (V»1k.) 
Allman and Wright (l_£) . 
Hesperotettix speciosus (Scudd.) 
Butcher et, al . (c0) . 
Brachystola ma^.na (Gir.), the lubber grasshopper 
Sevorin ( 415 ) . 
Mel anoplus bivittatus (Say), the two-striped grass' 
Brett and Rhoades (4£, 4£) , Butcher et al . (6o) , List and 
Hoerner (301). Munro et al. (337) . Ehoa ad Brett (?"c) . 
Severin ( 4L3 ) » 
H m di:: pr.'ntialis (Thos.) , the differential grae opper 
Armitage (2£) , Brett and Rhoades 6*5) . . ( 6o) , 
Gaines ( 1 63 ) , Gainer pan (1 66 ) , Qrahao ( lpO ) , Hinman • 
Cowan ( 21c ). Kearns e_t al. (246) , I [earner ( 3.01, ) . I 
(357). Ehoades and Brett (338), Severin ('.13), S 
tfeJ nd Decker (438, *J89 J. Weiffl ■?) . 
''. fenmr-rubxuB) (Deg.), the red—] 
Armitage l25). Butcher et al. ( 60) . , 
Cowan (_\ ,, Eutaon (Cjo), List and Hot Parker (152), 
Severin f5l3 ). Sun e£ j_l- (ifcSfi), ' 57, 
Weinman si fil« 
