BULLETIN 1313, TJ. S. DEPARTMENT OF AGRICULTURE 



Table 1.- 



-Results of fumigation tests on weevils in glass flasks at room temperature 

 {21° to 32° C.)— Continued 





Tem- 

 pera- 

 ture 



Fumigant 



Concentration 

 of fumigant 



Weevils killed after exposure 

 for 24 hours 



Test No. 



Molar 

 per- 

 cent- 

 age 



Pounds 

 per 

 1,000 



cu. ft. 



S. 

 oryza 



s. 



gran- 

 arius 



Tribo- 

 lium 



Plodia 



Alcohols and phe- 

 nols: 

 34. . 



°C. 

 28.5 

 28.5 

 29.0 

 30.0 

 30.5 

 30.5 

 32.0 

 29.0 

 30.5 

 30.0 

 31.0 

 29.0 

 30.0 

 30.0 

 28.5 

 30.5 

 30.0 



28.5 

 25.0 

 25.0 

 26.0 

 21.5 

 24.0 

 24.0 

 24.0 

 24.0 

 24.5 

 23.0 

 23.0 

 30.5 

 31.0 



28.5 

 28.5 

 28.5 

 30.0 

 24.0 

 23.0 

 24.0 

 26.0 

 25.0 

 25.0 

 23.0 

 29.0 

 29.0 

 30.0 

 30.0 

 25.0 

 25.0 

 21.0 

 22.5 

 23.0 

 31.0 

 30.0 

 30.0 

 30.5 



26.0 

 23.0 

 24.5 

 25.5 

 26.0 

 26.0 

 24.5 

 24.5 

 24.5 

 24.5 

 24.5 

 24.0 

 24.0 

 24.5 

 24.5 

 26.0 

 24.0 



Methyl alcohol .. .. 



16.00 

 1.00 

 2.00 

 4.50 

 8.00 

 3.50 

 1.70 

 1.70 

 1.50 

 1.70 

 .80 

 .77 

 .33 

 .20 

 .10 

 .08 

 .09 



.20 



11.15 



9.46 



5.53 



3.27 



2.59 



4.00 



2.00 



1.30 



.50 



.60 



.50 



.80 



.27 



15.00 



2.00 



4.10 



8.20 



1.53 



.70 



.42 



.22 



.42 



.26 



15.00 



13.30 



7.20 



3.40 



1.80 



1.53 



1.42 



.39 



.55 



.60 



.16 



f 3.10 



\ 3.01 



{ 3.17 



56.00 



20.37 



11.62 



6.35 



4.54 



3.64 



3.64 



4.10 



2.65 



3.50 



2.00 



1.30 



.90 



20.37 



22.41 



15.04 



10.00 



14.28 



.89 



1.79 



4.02 



10.27 



5.86 



2.85 



2.85 



2.51 



3.51 



1.96 



1.89 



.81 



.49 



.43 



.35 



.38 



.92 



22.40 



19.00 



11.11 



6.57 



5.20 



7.81 



3.91 



2.54 



.98 



1.17 



.98 



2.14 



.80 



24.27 



3.24 



6.63 



13.27 



3.94 



1.80 



1.08 



.57 



1.08 



.67 



30.13 



26.72 



14.46 



6.83 



3.62 



4.18 



3.88 



1.07 



1.50 



1.64 



.54 



.43 



.04 



.73 



93.71 



34.09 



19.44 



10.63 



7.60 



6.09 



6.09 



6.86 



4.43 



5.86 



3.35 



2.18 



1.51 



42.05 



46.26 



31.04 



20.64 



P.ct. 



100 











30 



.0 



100 



96 



100 



20 



100 



100 



80 











10 











20 

 100 

 100 

 100 

 

 

 100 

 100 

 100 

 100 

 100 

 100 

 100 

 100 



100 



5 



95 



100 



100 



100 



100 







100 



100 



100 



100 



100 



100 



100 



100 



100 







100 



100 



100 



100 











100 

 100 

 100 

 100 

 100 

 100 

 

 100 

 100 

 100 

 100 

 100 

 100 

 100 

 100 

 100 

 100 



P.ct. 



100 











15 







100 



50 



100 







60 



100 



60 



























100 



100 



100 











100 



100 



100 

 10 

 100 

 100 

 100 

 100 

 100 

 

 100 

 100 

 100 

 100 

 100 

 70 

 80 

 100 

 100 

 

 50 

 100 

 45 



P.ct. 



100 

 

 

 5 

 



100 



100 



15 



100 



100 

 

 

 

 

 





 100 

 100 

 100 

 100 



90 

 100 

 100 

 100 

 

 100 



75 



55 



100 



10 



15 



100 



100 



100 



100 







100 



100 



100 



100 



100 



100 



100 



100 



100 



















P.ct. 



100 



129. 



do 



o 



132 



do 



do 







135 



10 



64 



Ethyl alcohol 



15 



21... 



n-Propyl alcohol . 



100 



71 



do 



100 



Ill 



do 



100 



137... 



do . 



85 



81 



m-Butylalcohol 



100 



20 



Isoamyl ajcohol. 



80 



142.... 



do .... .... 



do 



100 



144 







148. 



—.do 







68 



Geraniol 







59.. 



Menthol. . 



80 



46 



Thymol 







Aldehydes: 



67 



Chloral hydrate 







289.... 



tt-Butyraldehyde. 





291. 



do 





321 



do . 





335. 



....do 





338 



do 





464. . 



Crotonaldehyde 





466 



do 





468 



do 





470. 



...do 





473 



do 





475. . 



do 





18... 



Furfural 



20 



52 



Benz aldehyde 



75 



Ketones: 



33 SL 



Acetone 



100 



128 



do 







131. . 



do- 



25 



134. 



—do 



100 



219. 



Chloroacetone.- . 





220 



do 



—do 





232. 





243 



do 



do 



do 



Ethyl methyl ketone. .. 

 do 





268 





270 





80... 



100 



140 



100 



143 



do 



100 



147 



do 



80 



151 



do 







304 



Mesityl oxide 





309 



do 





341 



do 



do 



do 





345 





352 





53... 



Acetophenone 



50 



6 



1 Chloroacetophenone (5 per 

 > cent) in carbon tetra- 

 J chloride (95 per cent). 



Methyl formate 



100 



12 





 



100 

 100 

 100 

 100 

 100 

 100 

 

 100 

 100 



100 

 100 

 100 

 100 







100 

 100 

 100 

 100 

 100 

 100 

 

 100 

 100 

 100 

 100 

 100 

 100 

 100 

 100 

 100 

 100 







63 



5 



Esters: 



217 





222. . 



do . 





234. 



do 





241 



do 





259. 



do 





260. 



do 





271. 



do 





272. . 



do 





273 . 



do 





474A, 475A 



do 





476A 



do 





506. . 



do 





507 



do 





284 



Ethyl formate 





286 



do 





319 



do 





328 



do.... 





3 Concentration of chloroacetophenone only. 



