Table 1. --Effectiveness of various materials applied as sprays and as dust 

 against cabbage looper and aphids on cabbage, Los Angeles and Riverside Counties, 

 Calif., 1960-61. 



Cabbage loopers 



Insecticide and Number surviving 



pounds of active per plant Aphids 



ingredient per acre Percent Colonies Percent 



per application Small Medium Large control per head control 



Experiment 1 - O'Kuma field (applications on May 19, 31* June 9, i960) 



1/ 

 Endrin l/U O.k 88 1.3 62 



Naled 2 plus 

 B. thuringiensis lj ~ .5 .1 82 3.2 6 



1/ 

 Dimethoate 2 .6 82 100 



Malathion 1§- plus 

 B. thuringiensis !§• -- .6 .1 79 .5 85 



Toxaphene 3 plus 

 parathion l/2 .8 77 3.7 



Malathion 1§ .6 .2 77 .k 88 



Mevinphos l/2 plus 

 B. thuringiensis lj -- .8 .1 75 .k 88 



Naled 2 1.1 .1 63 .7 79 



American Cyanamid 2U055 

 (5-percent dust) 2 --- 1.0 .2 .1 62 8.3 



B. thuringiensis l| --- 1.3 .3 .1 51 l.k 59 



Hercules 5727 1 -- 1.2 .5 .1 kQ 7-1 



Tepp 1 pt. plus 

 B. thuringiensis 1^ -- 1.7 .k .1 36 1.8 1+7 



Untreated check 2.U .8 .3 -- 3.U 



L.S.D. 5 percent .6 .5 .1 20 n.s. 



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