SUMMARY 



In field experiments in California during I96O-61 on the control of the 

 cabbage looper ( Trichoplusia ni (Hubner)) on cabbage, naled, endrin, endosulfan, 

 dimethoate, and Guthion gave the best control. Except for endrin, the same 

 materials were also highly effective against the cabbage aphid ( Brevicoryne 

 brassicae (L.)). Four or five applications were required in the fall and about 

 three in the spring. Bacillus thuringiensis var. thuringiensis Berliner applied 

 alone in sprays was fairly effective against loopers, and when combined with 

 other materials did not increase their effectiveness materially. The antifeeding 

 compound American Cyanamid 2U055 gave fair control of loopers, but this compound 

 and B. thuringiensis were ineffective against the cabbage aphid. Results with 

 malathion were inconsistent; the compound gave good to fair control of aphids 

 but poor control of loopers . Zectran and Shell Compound 4072 showed promise 

 against loopers in one experiment. 



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