TESTS IN MARYLAND. 



23 



Table V. — Parent varieties and crosses classified and ranked according to the computed 

 production of ear corn {basis of 15 per cent moisture). 



Rank. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29 



First-generation cross (X Selection 119). 



Cross 120 



Hickory King. 

 Ohio Learning. 



Selection 78 



Reid Yellow Dent 



Fraley Yellow Dent. . 



Red Blaze 



Sturges Hybrid Flint. 

 Golden Eagle 



Whitecap 



Illinois Learning. 



Silvermine 



Selection 77 



Cross 100. 



Parent variety. 



Selection 119 (average for 60 rows). 

 Fraley Yellow Dent 



Cross 120. 



Selection 78. 

 Selection 77. 



Hickory King 



Red Blaze 



Ohio Learning 



Silvermine 



Illinois Learning 



Reid Yellow Dent 



"Whitecap 



Cross 100 



Golden Eagle 



Sturges Hybrid Flint. 



Yield 

 per acre. 



Btisheh. 



58 

 53 

 51 

 49 

 48 

 48 

 47 

 47 

 47 

 46 

 46 

 46 

 46 

 45 

 44 

 44 

 44 

 43 

 43 

 41 

 39 

 39 

 38 

 38 

 38 

 36 

 36 

 32 

 30 



STOVER WEIGHTS OP PARENTS AND CROSSES COMPARED. 



As no determinations were made of the water content of the stover, 

 a comparison of weights of stover at liarvest time does not repre- 

 sent food value and is of httle importance except in indicating the 

 earliness of maturity of the crosses and parent varieties. The stalks 

 of the later maturing varieties contained considerable sap when 

 weighed the latter part of October, while those of the earlier matur- 

 ing varieties contained very little sap. In 4 cases out of the 14 

 the stover weight of the crosses is lighter than the average of the 

 two parents. In 3 of these 4 cases the female parent matures fully 

 10 days earlier than Selection 119. 



In general, the crosses seemed intermediate between the parents 

 regarding height and time of maturing. It seems that the earlier 

 maturing parents transmitted to their crosses their early-maturing 

 character in sufficient degree to cause the stover to weigh less than 

 the average for the two parents. Sturges Hybrid, the only flint 

 variety in the test, is an exception in this respect. In no instance 

 was the stover weight of a cross as light as that of the lighter pro- 

 ducing parent. 



The cross of Cross 120, which gave so remarkable an increase in 

 grain production, also gave 14 per cent increased stover weight over 



218 



