34 



CROSSBREEDING CORN, 



that the comparisons could not be regarded as of value, and accord- 

 ingly have not been considered in the results. The order of planting 

 the varieties and crosses and their field-row numbers are shown in 

 Table X. 



Table X. — Comparative productiveness of parent varieties of corn and first-generation 



crosses at Waco, Tex., in 1910. 



[Area of each row one-seventieth of an acre.] 



Row 



No. 



Variety and cross. 



Yield of ears (husked). 



Per 

 row. 



Per 

 stalk. 



In- 

 crease 

 over 

 better 

 parent. 



Number of ears. 



Good. I Poor. 



4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 26 

 27 

 28 

 29 

 30 

 31 

 32 

 33 

 34 

 38 

 39 

 40 

 41 

 42 

 43 

 44 

 45 

 46 

 47 

 48 

 49 



Chisholm 



SchieberieXChisholm 



Sehieberle 



Chisholm 



Singleton X Chisholm 



Singleton 



Chisholm 



McCuUoughX Chisholm 



McCullough 



Chisholm 



Ferguson YellowxChisholm 



Ferguson Yellow 



Chisholm 



Gorham YellowxChisholm. 



Gorham Yellow 



Selection 137 



Selection 137XChisholm 



Chisholm 



Selection 136 



Selection 136XChisholm 



Chisholm 



Surcropper 



Surcropperx Chisholm 



Chisholm 



Blow 



BlowxChisholm 



Chisholm 



Gourd Seed 



Gourd Seed X Chisholm 



Chisholm 



Munson 



Munson XChisholm 



Chisholm 



Mosby Prolific 



Mosby ProliflcXChisholm... 

 Chisholm 



Pounds. 

 19 

 30^ 

 20 

 14 

 26i 

 18 

 20 

 24 

 15 

 20i 

 32 

 22 

 29 

 26 

 12 

 12 

 20 

 24 

 34 

 43 

 17 

 21 

 20 

 14 

 19 

 28J 

 22 



m 



42J 



14 



25 



30 



23 



16 



23 



20 



Pounds. 

 0.413 

 .565 

 .526 

 .378 

 .500 

 .486 

 .377 

 .490 

 .312 

 .380 

 .533 

 .440 

 .446 

 .510 

 .353 

 .300 

 .364 

 .430 

 .523 

 .573 

 .447 

 .412 

 .435 

 .400 

 .373 

 .452 

 .458 

 .583 

 .625 

 .400 

 .556 

 .577 

 .469 

 .364 

 .434 

 .488 



Per ct. 



\ 



29 



21 



23 



-18 



10 



- 9 



19 

 31 

 20 

 11 

 34 

 14 

 20 

 30 

 13 

 19 

 38 

 15 

 23 

 21 

 10 

 4 

 21 

 30 

 38 

 45 

 12 

 20 

 23 

 14 

 15 

 25 

 22 

 40 

 56 

 10 

 26 

 30 

 22 

 24 

 42 

 16 



21 

 24 

 14 

 26 

 16 

 22 

 27 

 20 

 30 

 30 

 23 

 34 

 38 

 32 

 19 

 30 

 32 

 20 

 30 

 30 

 27 

 33 

 23 

 18 

 34 

 41 

 26 

 25 

 15 

 23 

 21 

 25 

 24 

 24 

 13 

 32 



In 10 of the 12 comparisons the cross out34elds the better parent, 

 the increase ranging from 3 to 20 per cent; in the remaining 2 com- 

 parisons the cross yields 1 8 and 9 per cent less than the better parent. 



TEST AT CORSICANA, TEX. 



At Corsicana tlie test was located on sandv loam of medium fer- 

 tility. The corn was planted in hills 3^ feet apart each way, culti- 

 vated well, and kept free of grass and weeds. The planting was 

 made in a difTerent manner from that at Sherman and at Waco, a 

 smaller number of rows of Chisholm were planted and these were 



218 



