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miles north of San Diego, it is reported to have destroyed 75 per cent 

 of crop in 1802. 



In Mexico this year (1894) the damage to crop in Zaragoza and San 

 Juan Alleude region of Coahuihi was estimated at 90 per cent. The 

 damage over 30 years ago ni the Monch)va district was between 90 and 

 101) per cent. In Matamoras tlie damage this year was over' 90 per 

 cent also. This is considerably greater than the damage there in pre- 

 vious years, according to Mr. H. Nielsen. 



There seems to be some evidence pointing to greater damage by the 

 weevil in wet years. Mr. Delamer, whose field (north of San Diego) 

 was badly damaged in 1892, says that he had much rain that year in 

 his immediate vicinity, while other localities around him had none. 



Mr. Eios writes also that the prevailing impression in the Monclova 

 district is that the weevil was worse m wet years. 



REMEDIES NEdESSAKY TO EXTERMINATE IT. 



The insect is by far the worst pest that has ever appeared on cotton, 

 and the most difficult to combat. Like all weevils, it is very tenacious 

 of life, and its habit of frequenting the squares renders it not amenable" 

 to ordinary treatment. 



Burning the fields. — If possible all infested fields should be burned 

 completely duriug the winter, while the weevils are in a state of hiber- 

 nation. Cotton planters in general argue that it will be very difficult to 

 do this. If, however, the plants are all cut down and distributed evenly 

 over the fields it should be possible to completely burn all the stalks 

 and any possible leaves or debris there may be upon the ground. If 

 this is done the weevils that are in the bolls and those that may be 

 under the leaves on the ground will be destroyed. This will be a very 

 large percentage of them, and if there are no cracks in the ground nor 

 clods to any extent it will take nearly all of them. It is almost certain 

 that the great majority of the weevils remain m the cotton fields through 

 the winter, and spread into new fields only during the early part of the 

 season following. 



Fioodiny. — In localities where irrigation is practiced, as at San Juan 

 AUende, Coahuila, it will be easy to flood the fields after burning them 

 over and' allow the water to stand on them for a week or two. This 

 would kill any weevils that had crawled into cracks in the ground, 

 and would greatly increase the growth of the plants the following sea- 

 son. In Brownsville irrigation is accomplished only by pumping up 

 water with machinery and then distributing it, and flooding there would 

 thus be more difficult. It would, however, be possible at some expense, 

 and.less irrigation would be necessary during the summer months if 

 this winter flooding were practiced. 



Rotation of crops. — In addition to burning and flooding, or burning 

 alone, rotation of crops should be practiced. No cotton, not even a 

 single plant, should be allowed to grow for two years anywhere in the 



