i8 INSECTS OF ECONOMIC IMPORTANCE 



mended formula ^^ for cutworms is as follows : 2 

 pounds of paris green, 50 pounds of wheat bran 

 and six finely chopped oranges or lemons. Bring 

 this mixture to a stiff dough by adding cheap mo- 

 lasses and distribute over the field in small lumps 

 and near each plant. 



The formula ^^ used so successfully in Kansas 

 for poisoning grasshoppers is as follows : i pound 

 of paris green, 20 pounds of wheat bran, 2 quarts 

 of syrup, the juice and pulp of 3 oranges or lemons, 

 and 3^< gals: w^ater. The bran and paris green 

 are thoroughly mixed while dry. The juice of the 

 oranges is squeezed into the water after which the 

 pulp and skin are chopped fine and added to the 

 water. The syrup is then poured into the water 

 and this liquid mixture of fruit juice, syrup and 

 water is used to thoroughly dampen the bran and 

 paris green. The bait is sown broadcast in the in- 

 fested fields in the early morning. 



In Canada a mixture of shorts, 50 pounds; mo- 

 lasses, I gallon; paris green, i pound; and water, 

 1 1-2 gallons has been effective. ^^ The shorts do not 

 dry out as rapidly as bran. For cutworms that 

 feed below the surface the bait should be harrowed 

 into the soil. 



Freshly cut clover dipped in a strong arsenical 

 solution is eff'ective for cutworms. Renew as often 

 as it dries. 



Slices of potatoes dusted with an arsenical dis- 

 tributed about beds in a greenhouse are effective 

 against sowbugs. 



CONTACT SUBSTANCES FOR SUCKING INSECTS 



I. Pyrethrum. 



35 Walton and Davis— U. S. Dept. Agr., Ear's' Bull. 739- 



36 Dean— Jr. Ec. Ent., Vol. 7, P- 67. 



37 Strickland— Canad. Dept. Agr., Ent. Br., Circ. 6, 1916. 



