310 journal of Agricultural Research voi. xxu. no.6 



FORMULA NO. 2 



Shorts pounds . . 25 



White arsenic ■ do ... . i>^ 



Molasses quarts. . 2 



Salt pound . . i 



This was prepared and distributed in the same manner as formula 

 No. I. Two acres were sown. 



FORMULA NO. 3 



Shorts pounds . . 25 



Paris green do .... i 



Salt do .... I 



This was mixed dry and seeded at the rate of 12^^ pounds to the 

 acre. It ran through the drill about the same as the mixtures which 

 were mixed wet and then dried. Two acres were sown. 



FORMULA NO. 4 



Shorts pounds . . 25 



White arsenic ; .* ! .'.'.. 1 do ... . i}4 



Salt do ... . I 



This was prepared dry and then thoroughly mixed with an equal 

 bulk of wheat. This combination ran through the drill very evenly, 

 the wheat being heavy enough to carry the bran through the drill without 

 clogging. Two acres were seeded at the rate oi \2}i pounds of bran to 

 the acre. Three days after the poisoned bran was put out the field was 

 examined and it was estimated that about 10 per cent of the worms 

 in the treated areas had been killed. No difference could be seen in the 

 effectiveness of the various formulae, and numerous living cutworms 

 remained in all the plots. One week later the plots were again examined 

 and the number of dead cutworms had not materially increased. A 

 final examination of the field was made on June 14, three weeks after the 

 poisoned bran was put out. Cutworms were found in abundance on all 

 plots, and in plots 1,2, and 3 practically every spear of wheat had dis- 

 appeared. In plot 4, which was seeded with a mixture of wheat and 

 poisoned bran, the wheat was about 3 inches in height and was being 

 rapidly cut off, 50 per cent of the new stand being already destroyed. 

 From a practical standpoint the control on all plots was a complete 

 failure and an absolute waste of materials. 



POISONED BAIT SPRAY FOR ADUI,TS 



The presence of large numbers of Porosagrotis orthogonia moths at 

 flowers led us to try out the following poisoned bait spray: 



Water gallon . . i 



Molasses pint . . ^ 



White arsenic ounce . . }4 



Amyl acetate do % 



