Fig. 105. — An 1^,\u ok Corn 



INJURED BY WeKVILS. 



(W. E. Hiuds.) 



SOUrilEUN FIELD CROPS 



are still in the field; and later 

 generation.s develoj) in the crib. 

 Early varieties and tho.se with soft 

 grains are most susceptible to in- 

 jury (Fig. 105). Late planting of 

 medium or late varieties escapes 

 injury, or reduces the number of 

 weevils finding access to the ears 

 in the field. Doubtless much can 

 be done to lessen the weevil injury 

 by selecting corn with a view to 

 weevil resistance. The qualities 

 tending to tlecrease the numlier of 

 weevil, but not entirely to a\'oid 

 them, are (1) a shuck that fits 

 tigiitly over the end of the ear and 

 (2) a grain that is quite hard. Any 

 means that decrease the number 

 of corn ear-worms would indirectly 

 reduce the injury from weevils, 

 wliich often enter the ear through 

 the openings made liy the former. 

 However, the chief reliance must 

 be on fumigating tlie stored grain 

 with the vapors made In- carbon 

 disulfide. This liquid readily 

 e\-aporates, or changes from a 

 li(iuid to a gaseous form. Tliis 

 imiilies \\w necessit>' for tight 

 cril)s, or for otlier means of treat- 

 ing the grain in tight compart- 



