236 



JOURNAL OF ECONOMIC ENTOMOLOGY 



\Vo\. 8 



There seemed to be some evidence, however, to show that turkeys 

 are likely to be poisoned; due, probably, to their habit of eating large 

 quantities of the dead and dying poisoned grasshoppers. 



Further experiments will be necessary before we can speak con- 

 clusively upon this point. 



Akmy Worms 



The past season there were a number of local outbreaks of Army 

 worms. The most effective means found for their extermination was 

 the liberal use of the bran mash poison, scattered in the evening. The 

 worms will often leave garden vegetation for the poison, and in our 

 experiments, they were frequently observed turning back in their 

 course to get this poison. 



I By actual yard-square counts, one application, in some instances, 

 destroyed 90 per cent, of the worms. Death usually ensued about 

 one hour after the feeding had begun. 



Intermittent Seasonal Spraying 



Among our commercial orchardists, it is universally accepted that 

 intelligent spraying is necessary to profitable returns. Among the 

 smaller orchardists, however, the question frequently arises regarding 

 the necessity for annual spraying. That is, sometimes there is a 

 notion that in an orchard where injurious insects and plant diseases 

 have been well controlled for some years, an. intermission of one year's 

 time succeeding such spraying would not permit such enemies of the 

 apple to become sufficiently prevalent to materially affect the crop. 

 Last season an unusually good opportunity was offered to secure a 

 practical answer to this question. That is, to determine what bene- 

 ficial effects, if any, would accrue to an orchard this year, from three 

 years' proper spraying prior to the present one. In other words, to 

 determine whether an orchard, successfully sprayed for three years, 

 could be profitably permitted to go unsprayed this year. 



The orchard selected was a ten-acre orchard of commercial varieties 

 which had been successfully sprayed for the three years past. Last 

 year, and the year before, this orchard showed less than 5 per cent 

 injury due to injurious insects and plant diseases. In this ten-acre 

 orchard this year, two representative trees for each of the following 

 varieties were chosen: Ben Davis, Gano, Jonathan, Black Twig, Mis- 

 souri Pippin, Wine Sap and Willow Twig. The set of the fruit on these 

 trees compared very favorably with that of the three previous years. 

 Monthly counts, beginning with the first week in each month of the 

 months of June, July, August and September were made of the drops 

 from these trees, to determine the cause of the fall of the apples. 



