TESTS AT STATESBORO, GA. 61 



Table XVII. — Summary of the 10 ears of each variety tested with their crossed progeny. 



1 Only six rows considered. 



Table XVII shows that when crossed with Marlboro Prolific all 

 but one variety (Tindal) gave a gain in ears, and all but two varieties 

 gave a gain in stover. Wlien crossed with Rodgers Wliite Dent all 

 varieties except the sire variety itself gave a gain in ears, and only 

 two gave a loss in stover. 



SOME CROSSES SUPERIOR TO EITHER PARENT. 



Since the yields of the crosses are compared only with the female 

 parent, it might be concluded that this general higher yield of the 

 crosses is probably due to the still greater productiveness of the male 

 parent. This conclusion, however, is not supported in the cases 

 where Marlboro Prolific and Rodgers Wliite Dent serve as females 

 in the experiment. In both instances the resulting cross produced 

 better than its female parent and since Rodgers Wliite Dent is more 

 productive than Marlboro Prolific, as shown in Table XVII, the 

 cross in which Rodgers Wliite Dent served as female must be con- 

 sidered more productive than either parent. 



In Table XVIII is shown the average ranking of the varieties 

 according to their productiveness in 1910 in the test plats at States- 

 boro, Ga., where each variety was grown in the same hills w^ith its 

 crossed progeny. 



Table XVIII. — Arrangement of varieties of corn in the order of their productiveness, 

 as indicated by the average yield per stalk when groion in hills with their crosses. 



Name of variety. 



Sanders Prolific 



Aldrlch Perfection. . 

 Rodgers White Dent 



Tindal 



Marlboro Prolific 



Name of varietv. 



Ears per 

 stalk. 



Native of Statesboro 



Station Yellow 



Cocke Prolific 



Williamson 



Mosby Prolific 



Pounds. 

 0.51 

 ,51 

 .49 

 .48 

 .465 



Average 

 rank. 



46 



4c 



5 



6 



7 



218 



