10 



6.. Efficient control is only possible if the destruction of all bolls 

 is systematically undertaken at the time of the last picking, the bolls 

 on the ground, or even buried bolls, being as important as those left 

 on the cotton sticks. Cotton seed (other than for sowing) and seed 

 cotton stored after the middle of January ought to be kept in moth- 

 proof stores, and all cotton seed intended for sowing (excepting 

 perhaps first picking seed), ought to be treated by heat or poisonous 

 gas before distribution. All other cotton seed ought to be exported 

 or crushed before April 1, unless it has been treated in the same way. 



7. The order of importance of the methods of control are : 

 (a) Destruction of bolls as early as possible, earliness being an 



important factor ; (b) moth-proofing of all stores intended for the 

 storage after January of cotton seed and seed cotton (except seed 

 kept for sowing); (c) treatment of all seed intended for sowing, and 

 immediate exportation, crushing or treatment of all the remaining 

 cotton seed. 



8. None of these methods of treatment can be efficient alone, 

 and unless all three are universally and thoroughly applied. Treat- 

 ment of the seed alone cannot be expected to give any appreciable 

 results. 



