-llH- 
leaves appeared on the plants effectively controlled the cabbage looper, 
imported cabbage worm, and several species of Agrotinae. The same mix- 
ture was not effective against the cabbage webworm, but when the strength 
was increased to 2.5 percent adequate protection was obtained. — White 
(111). 
?our applications of a 3-percent DDT dust gave good control; better 
than a 0.75-P ercent rotenone dust. Dusts containing 1 percent of DDT 
deposited from acetone or Velslcol AR-60 solutions gave even better con- 
trol. In other tests the leaf -damage rating of 1-percent DDT dust was 
practically the same as that of 0.5 percent rotenone, — Apple (75) » 
Greenhouse tests with this species gave results almost identical 
with those for Pierls rapae L. Gesarol A spray 10 pounds (DDT 8 ounces) 
was much more effective than 5 pounds of lead arsenate.— Boss ( 306 )« 
Cabbage plants were treated with DDT dusts (l/2 to 3 percent), 
applied at 28 to 30 pounds per acre. Sprays containing as little as l/2 
pound of DDT in 100 gallons of water were applied at 125 *° 150 gallons 
per acre. In one test against thrips, DDT was dissolved in dichloroethyl 
ether (2U grams in 100 ml. total), emulsified, and applied at the rate 
of 1 pound in 100 gallons of water. These sprays and dusts gave outstand- 
ing control of the cabbage looper, the imported cabbage worm, and the 
diamondback caterpillar. None of the treatments compared favorably with 
nicotine sprays and dusts against cabbage aphid and turnip aphid. Re- 
sults with DDT sprays and dusts on Thrips tabaci Lind. and others were 
erratic. However, the DDT-dichloroethyl ether treatment gave 99«2 per- 
cent control of thrips in a heavy infestation. — N. J. Agr. Expt. Sta. 
(211). 
An application of Gesarol A-3 dust caused a complete clean-up 36 
hours later. The larvae varied in size from half- to full-grown.— 
Janes (225). 
Cabbage worms and loopers were controlled with a 3~P e rcent DDT dust 
applied 5 times with a rotary hand duster to 70 plants of early cabbage. 
No larvae or damage were ever observed on the treated plants , whereas 
the checks were severely damaged. About a month after the last applica- 
tion of dustf larvae were found on the treated plants* Late cabbage and 
broccoli were treated with a 3-peroent DDT dust and a 20-percent DDT 
spray. Counts made after the fourth application showed neither worms 
nor loopers on the treated plants but 116 worms and 64 loopers on the 
untreated plants* Lice colonies were present on 4 plants in the sprayed 
plots, and on 2 plants in the dusted plots; there were none on the check. 
No injury to the plants. The spray did not adhere well to the plants. 
—Gould (184), 
