78 



NATURAL (ONTKOL OF THE COTTON BOLL WEEVIL. 



Boll weevil, mortality in all classes of forms ^^«- 



bolls versus squares "^^"^-^ 



each class of forms for (^adi sect ion. 



fallen bolls, 

 form.'- 



from ants 



heat and drviiu 



square 



33-35,74 



60-62 



28-20,80,:i]-33,51.o4-(i0,(Jl-62,75 



73-74 



31,33,51 



31,32,51 



I)arasites .., ^„ ., 



31, 33, ol 



99 



30, 31 -32, 33, 44, 47, 51, 54-59, GO, 61-62 *75 

 27. 30, 31-33, 51. 54-60, 61-6'^' 75 



•'^^l"^'-^''^ 97J98 



30.31-32,33,44,5L54-59,60.61,''75 



^''^'"f"^^ ■•-■■■-----'--;-'3L33~51 



neat and dryintr 31 S'? 51 



P^'^^^^"^- --"-■- --'-V.V^' 31! 33; 51 



54-55, 61, 62-63, 75 



33-35,74 



•57-58, 61, 62-63, 75 



■ - - 55, 61, 62-63, 75 



-- 58-59,62-63,75 



61 



,, , '5^-57, 61, 62-63, 75 



.^:;^'^;^-f^- 59,61,62-63.75 



in cotton forms 9-- oq 



37, 38. 40-41, 43. 54-59, 60,*62,"75 



27-29, 



30, 37, 38, 40-41, 43, 54-59, 60. 62. 75 



natural control in various localities... ""''" ''' ''^'1'^ ^'^ 

 parasites more abundant in hanging than infallen'formr '' 



proportion of stages which may emerge from fallen bolls.'. 



hanging dried bolls., 



fori I 



Louisiana, western, 

 squares versus bolls. 

 Texas, central 



eastern 



northeastern. 



northern 



southern 



of adull.^ 



larvae in cotton forms, 

 pupa' in cotton forms. 



squares 



hanging dried bolls., 

 squares 



neural, of boll weevil, climauc facto,; inVoVvVci: .' .' .' .' .' .' : l""; 37,' ''""' '■• 



conclusions and summary 



conditions requiring consideration 



definition 



Climatic conditions in control of l)oll weevil 



Control, natural, of boll weevil, rlim.t;. f......„ 



38-43. 74 

 73-76 

 11-12 



influence of dry season on succeeding season'l4-15. 73 

 period [duration] of infestation. 51-53, 75 

 short drought in same season. . 12-14,' 73 

 winter climatic conditions. . I5-I9' 73 



in various classes of forms 26-31, 6O-62' 75 



, ^. . l"f'»litios 35-38, 53-59, 60-6.3,' 75 



localities where greatest.. 



relation.ship of factors 



,, ,, , S"»"nary and conclusions 



^ ctton lorn.s {see oho Bolls and Squares). 



fallen, mortality of boll weevil.. .,,, .,, .,., >., ., 



74 

 19-23 

 73-76 



