78 



varieties is not, wide. The greatest money value per 

 acre came from Tri-Cook, which made 1^ 40.08 worth of 

 seed cotton per acre. Tlie three best yielding varieties, 

 named in their order, were Tri-Cook, Dixie and Cook 

 (check). 



.1//'. ./. /. McGuire : Mr. McGuire's experiment was 

 located near that of Mr. Richardson's. The soil is 

 light sandy with a jx'llow subsoil. The amount of 

 infection was not very great, as is shown from the 

 number of plants that died on the Cook (check) plots. 

 The money value of Cook (check) per acre is greater 

 than that of the wilt-resistant varieties- This comes 

 from the fact that the best yielding strain of Cook from 

 the Experiment Station breeding test was used as 

 a check in this experiment and that it possessed some 

 immunity to black-root, as was found out later. 



Mr. J. H. Reynolds: This experiment was locatetl on 

 a light sandy soil with a reddish subsoil about five 

 miles west of Greenville. The land was badly infected 

 with wilt. 



The record of the first i)icking was tlie only one 

 oljtained. Almost all the late crop was destroyed by 

 the boll weevil. 



It is again noticed that the variety used as a check 

 yielded a greater money value than most of the wilt- 

 resistant varieties. This Cook (check) variety was the 

 same as mentioned in the preceding experiment. 



Average of all Experiments on Basis of Acre Values. 



In an average of fifteen tests or more, the percentage 

 of increase in crop value over the average of the check 

 varieties indicates a difference in money value of 8.1 

 percent for Modella, 23.5 percent for Wood. 24 per- 

 cent for Dixie, 27.() percent for Cook 3()7-(), 29.5 per- 

 cent for Covington-Toole and 51.3 percent for Tri-Cook. 

 In total value of seed and lint per acre Dillon ranked 

 liigh. and was probably the least susceptible of the 

 wilt-rt'sistant varieties to this disease. 



Tri-Cook, Covington-Toole and Cook 307-6 in the 

 fifteen experiments made an average acre money 

 value of $40.53, $34.42 and $34.17 resi)ectively. 



COMPARATIVE RESISTANCE OE DIFEERENT 



VARIETIES OE COTTON. 

 The table of "Percentage of Plants Dead or Nearly 

 Dead" shows the relative resistance of the different 



