Table 5.- (Continued) 



Rainfall 



Date 



Numbers | 



Der Acre 



Larval 





Amount 

 (inches) 



Treated^/ 



Examined 



Squares-' 



Weevils 



Pane 



tures 



Infestation 



Date 



Egg 



Feeding 



(Percent) 



a/9-10 



2.1 























8/15 



29,08U 



3,U01 



7,623 



U6,675 



65.3 



8/18 



.9 























8/21 



2U,628 



1,876 



31,U29 



Ul,280 



9I4.3 







8/22 















8/26-27 



3.5 























8/28 



1U,777 



1,876 



12,U31 



33,5UO 



82.1 



a/ Spray applications at 0.25 lb. /acre of Guthion on June lU, 17 and 19. Later applications 

 at 0.25 lb. of Guthion plus 0.5 lb. of DDT per acre. 



b/ Plants per acre, 3U595O; lint cotton per acre, 607 pounds, 

 c/ Plants per acre, U6,910; lint cotton per acre, I4.U8 pounds. 



Table 6.- Rainfall, boll weevil infestation records, and numbers of squares in Field 13 receiving 

 15 continuous treatments 



Rainfall 



Date 



Numbers "per Acre 



Larval 





Amount 

 (inches) 



Treated-^/ 



Examined 



Squares 



Weevils 



Punctures 



Infestation 



Date 



Egg 1 Feeding 



(Percent) 



FIELD 13 -'^ 









6/5 





72 









6/11-13 



0.5 

















6/1U-15 



2.3 



6/lli 



6/lU 





5U 













6/19 



6/19 



10,327 



131 







U36 



3.U 



6/20-21 



1.9 





















6/22 



6/23 



28,177 



hh 



532 



1,639 



5.8 



6/27-28 



1.7 





















6/29 



6/29 



57,063 



133 



399 



3,U56 



U.6 







7/5 















7/6-7 



1.9 





7/6 



87,852 



Uh 



3,5UU 



2,3li8 



5.5 



7/8 



2.5 



7/10 





















7/11 



137, 2U9 







3,278 







2.3 







7/lU 















7/15 



,8 























7/18 



I59,93ii 



177 



975 



1,861 



1.0 







7/20 





















7/2U 



135,000 



UU3 



6,362 



2,702 



5.U 



7/26 



.9 



7/25 















7/27 



3.U 



7/28 















7/30 



2.8 

















8/1 



.2 





















8/2 



8/2 



108,187 







15, 9U9' 



2,835 



15.9 



8/3 



.3 



8/6 





















8/8 



83,55U 



3,5UU 



13,557 



8,152 



26.0 



8/9-10 



3.2 



8/9 

 8/lU 





















8/16 



56,175 



3,899 



22,329 



2U,U55 



83.3 







8/22 



8/22 



30,795 



605 



28,990 



U,930 



85.0 









8/28 



9,U36 



1,063 



6,380 



26,715 



78.9 



a/ Dust applications of Sevin at 0.75 lb. /acre on June lii, 19, 22 and I.I3 lbs. /acre on June 29, 

 July 25, August 2, 6, 22 and BHC at 0,U5 lb. plus DDT at 1.5 lbs. /acre on July 5 and BHC at 0.6 lb. 

 plus DDT at 2.0 lbs. /acre on July 10, Ik, 20, 28, August 9 and ik. 



b/ Plants per acre, 26,582; lint cotton per acre, 558 pounds. 



-13- 



