392 



SOUTHERN FIELD CROPS 



Such corn may be cut and fed to live-stock when in the 

 late roasting-ear condition ; or it may be left in the field as 



usual. In this 

 latter case corn 

 is still help- 

 ful in reduc- 

 ing the num- 

 ber of boll- 

 worms, since 

 it attracts a 

 number of 

 worms to each 

 ear. Here they 

 devour each 

 other, leaving 

 only one or two 

 alive, instead 

 of many. 



Plo-nang in 



latte fall or 



early winter 



destrojrs the l^urrows (Fig. 170) in which the insect passes 



the mnter, and turns the pupae up to be killed bj- unfa-\'or- 



able weather. 



Fig 170 — Pupi or Boll tvoem in its Undet 



GE USD BURKOfl 



The Mexican Cotton Boll-weevil. 



GEANDIS 



■ Antmonomus 



361. Extent of injury. — The boll-weevil is the most 

 destructive insect enemy that has e^'er attacked cotton 

 in the United States. ^Yhen it first invades a new region 

 it sometimes reduces the total production of cotton bj^ 



