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JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 3 



cent more than that planted June 1st, 35.8 per cent more than that 

 planted June 15th, and 36.2 per cent more than that planted July 

 1st; and it may also be said that the corn planted May 1st lost 1.3 

 per cent less grains from ears that were infested than that planted 

 April 15th, 1.2 per cent less than that planted May 15th, 3.1 per 

 cent less than that planted June 1st. The outcome of this experiment 



CHART NO. 4. 



Cbai-t No. 4. — Perceutage of grains destroyed on Infested ears of each va- 

 riety in eacli plot. 



indicates that early planting on uninfested or cleaned soil will reduce 

 the com ear-worm damage about 40 per cent. 



Chart No. 2 shows not only the egg laying of the actual broods, 

 but shows this feature in relation to the time of silking of each 

 variety in each plot. It will be noted that plots 1 and 2 finished 

 silking before the third brood of eggs were deposited and reference 

 to charts No. 3 and No. 4 Avill show that they experienced the least 

 injury. Plot No. 1, with the exception of Hildreth, in which silking 

 came much later than others, remained in silk longer than plot No. 2, 

 thus exposing it for a longer time to oviposition with resulting greater 

 damage. The silking of Hildreth in plot No. 1 is sufficiently later to 

 account for greater injur}-. Plot No. 1 received a "set-back" from 



