SOME COTTON DISEASES IIJ 



through the winter anyway, while we can 

 rest assured that practically every square not 

 picked up and destroyed, at least in cloudy 

 weather, will result in furnishing a boll weevil 

 to infest the crop. We know of hundreds of 

 instances where fields were located in the best 

 situation for weevil depredation, on bottom 

 lands surrounded by heavy timber, with a 

 rank growth of cotton and no previous prepara- 

 tion or burning of the stalks or destruction of 

 the rubbish, and yet by picking up the squares 

 and intensive cultivation a large crop of cotton 

 was made. If care is taken that every punc- 

 tured square is destroyed, a whole generation 

 of weevils will be wiped out in two or three 

 weeks. The old weevils will die and we can 

 go right on making the crop. Of course, in 

 sections where there is very slight rainfall and 

 on sandy upland soils anywhere during periods 

 of dry and very hot weather, dependence may 

 be placed on the heat to kill the weevil larvae 

 in the squares. 



It will seldom be safe to depend on this on 

 alluvial soils and never on any kind of soil 

 except under the conditions of drought and 

 heat above noted. 



