-u - 



Table 1, — Percent kill of third-instar larvae of the armyworm 2 days 

 after confinement on foliage sprayed with various N-substituted 1/ 

 formamides in acetone solution 



FormaBiide 5-percent 



Formanilide, o-chloro- 100 - 



Formamide, N,N-dipentyl- 100 - 



N-propyl- 100 - 



N-butyl- 100 - 



N,N-dibutyl- 100 - 



N,N-diethyl- 100 - 



N-isobutyl- 100 - 



N,N-dipropyl- 100 - 



N-(l-methylbutyl)- 100 - 



N-faeptyl- 100 - 



N,N-dioctyl- 100 - 



Formanilide, N-ethyl- 100 - 



N-butyl- 100 - 



N-pentyl- 100 - 



N-isopentyl- 100 - 



Formamide, N-phenethyl- 97 x 



N-hexyl- 90 - 



N-octyl- 80 x 



Formanilide, 2,5-diehloro- 80 x 



Formamide, N-ethyl 67 xx 



N-(l-iaetfaylpentyl)- $0 x 



N,N-diisopropyl- UO xx 



Formanilide, m-chloro- UO xx 



Formamide, N,N-dibenzyl- 33 xx 



N-tert-butyl- 33 xx 



Formanilide, p-chloro- 17 xx 



p_-Formophenetitide . 



Formamide, N,N-dicycloheayl?/ 



N-sec-butyl- 



p_-Formanisidide 



Formaaide, N-(2-hydroxyethyl)- 



N-(3-methoxypropyl)- 



13 xx 

 7 xx 



xx 

 xx 



XXX 



DDT (0.025 percent) 05 



1- percent 



7 



XX $ 



7 



XXX 



3 



XXX 







XX 







XX 







XXX 







XXX 







XXX 







XXX 







XXX 







XXX 







XXX 







XXX 







XXX 







XXX 







XXX 







XX 



1/ Heavy feeding xxx, moderate xx, slight x, and no feeding -. 

 2/ Alcohol solution. 



