BULLETIN 1160, U. S. DEPARTMENT OF AGRICULTURE. 
DETAILED RESULTS OF EXPERIMENTS. 
Table 1. — Results of spraying Aphis rumicis with organic compounds. 
PYRIDINE, QUINOLINE, AND ALLIED COMPOUNDS. 
Compound. 
Pyridine. 
Pyridinium ethyl iodide. 
Pyridinium ethyl hydroxide. 
Piperidine 
Piperidine sulphate 
Chloropiperidine (crude). 
n-Ethyl piperidine. 
n-Ethyl piperidine sulphate. 
Methylene dipiperidine. 
7, 7-Dipyridyl 
■Picoline. 
Pyrrole 
Quinoline 
Tetrahydroquinoline 
Quinaldine 
4-Dimethylaminoantipyrine 3 . 
Nicotinic acid nitrate 
Concentra- 
tions 
tested. 
Piperazine. 
ffiSS < Tolerance 
ceXtSs. of P lant - 
Grams per 
100 cc. 
0) 
1 
0.8 
0.5 
0.1 
0.05 
0.5 
L 0.1 
( J ) 
C 1 ) 
0.5 
0.1 
0.05 
0.5 
0.1 
0.05 
1.86 
0.93 
0.46 
1 
0.5 
0.1 
C 1 ) 
25 
20 
15 
10 
2 
0) 
{ i* } 
0.5 
1 <., oa ' 
Grams per 
100 cc. 
25 
>1 
>0.5 
5.0 
0.94 
>0.5 
>0.5 
±0.93 
>1.0 
1.0 2 
±15 
>2 
2.0 
2.0 
>1.0 
>0.5 
>0.S 
3.5 
0.8-1.0 
<0.5 
0.5-1.0 
0.8 
>0.5 
>0.5 
<0.46 
0.5-1.0 
<0.25 
>2 
<0.5 
<0.4 
<1.0 
<0.5 
<0.1 
2 
ALKALOIDS. 
Quinine (applied as hydrochloride) 3 . 
Cocaine (applied as hydrochloride) 3 . 
Hyoscyamine (appUed as sulphate) 3 
Pilocarpine hydrochloride 3 
Aconitine (applied as sulphate) 3 
Coniine hydrochloride 
Codeine sulphate 
Brucine (applied as sulphate) 5 
Narcotine (appUed as sulphate) 5 
Strychnine sulphate 3 
Cinchonine (appUed as sulphate) 3 . . . 
Cinchonidine (applied as sulphate) 3 . 
Quinidine (applied as sulphate) 3 
Curare 
Caffeine 
Nicotine 
Nicotine sulphate 
Atropine sulphate 
Hexahydronicotine 
1 
0.2 
1 
0.2 
0.4 
0.5 
0.5 
0.5 
0.12 
0.06 
0.5 
0.12 
0.5 
0.12 
0.5 
0. 
0. 
0. 
0. 
0. 
0. 
(>) 
« 
0) 
C 1 ) 
>i* 
>i< 
>0.4* 
>0.5 
>0.5* 
>0.5 
} >0.5 
>1< 
<1<? 
>0.4< 
>0.5 
>0.5« 
>0.5 
>0.5 
>0.5< 
>0.5« 
>0.5< 
>0.5< 
>0.5 
>0.5 
>0.5< 
>0.5< 
>0.5< 
<0.5 4 ? 
>0.5< 
>0.5< 
>0.5 
>0.5 
>0.5 
>0.5 
0.007 
>0.05 
0.009 
>0.013 

1-2 
0.6 
0.5-0.6 
1 Many concentrations tested. 
' Saturated solution. 
3 Caprs'l alcohol used as spreader. 
* Figures refer to free base. 
» 1 per cent amyl alcohol spreader. 
