Sept. I, 1930 



Line-Selection Work with Potatoes 



565 



Table XVIII. — Three-year summary of yields of m,arketable tubers per acre from, 100 

 Early Six Weeks tuber lines — Gintinued 



Tuber line No. 



612 



613 



614 



61S 



616 



617 



618 



619 



620 



62 1 



622 



Average 



1916 



Pounds. 



12.195 

 15.099 

 11.034 

 13.938 

 13. 938 

 15.099 



9. 292 

 11,034 



8,711 

 12, 195 



12,334 



Pounds. 

 29, 734 



25,088 



29, 269 



25, 088 

 25,919 



27, 876 



30, 663 



25, 088 



21, 518 



16, 725 

 26, 485 



24, 048 



I9I8 



Pounds. 

 15.331 

 16, 137 

 18, 584 

 13.473 

 12, 544 



18, 582 



19, 048 



15. 564 



18, 119 



4, 646 



19.358 



17,344 



3-year 

 average. 



Pounds. 

 20, 054 

 17, 806 

 20, 984 

 16,531 

 17,467 



20, 132 



21, 603 

 16, 648 

 16, 890 

 10, 027 

 19,345 



17,909 



Table XIX. — Twenty highest annual rankings and j-year average ranking 9 from. loo 

 Early Six Weeks tuber lines ^ 



1918 



Line No. 



*S6i. 

 *t;62. 



552- 

 **55i- 

 *548. 

 *549- 

 *546. 

 *53i- 

 *543- 

 **6o8. 



*54i- 

 **6o9. 

 **6o4. 

 **58o. 

 **52 5- 

 **533- 



*57i- 



*595- 



591- 



**565- 



*554. 



Yield. 



Pounds. 

 29, 502 

 27,873 

 25.553 

 25.553 

 25.320 



24,391 

 22,765 

 22,713 

 22, 300 

 22, 005 

 21, 603 

 21,516 

 21,516 

 21, 271 

 21, 271 



21, 271 

 21, 139 

 21, 027 

 20, 907 

 20, 907 

 20, 907 



Line No. 



*568. 

 **584. 



*585. 



**589. 



604. 



*595- 



**6i8. 



608. 



**t;96. 



*6o7. 



609. 



**6l2 . 



**6o5. 

 **6i4. 



**593 • 

 *588. 



**6o3 . 

 *6o6. 

 *597- 



*522. 



Yield. 



Pounds. 

 37,942 

 33, 684 

 32,987 

 31,361 

 30, 810 

 30, 663 

 30, 663 

 30, "9 

 30, 119 

 29, 966 



29, 734 

 29, 734 

 29, 343 

 29, 269 

 28, 969 

 28, 908 

 28,854 

 28,341 

 28, 340 

 28, 340 



1916 



Line No. 



S5I- 



*577- 

 *5i8. 

 *532- 



533- 



565. 

 *569- 

 *578. 



580. 

 *594. 



589- 



618. 



612 . 



614. 



603. 

 *563- 

 *530- 

 *Si7- 

 *583- 



*579- 

 584- 

 593- 

 596- 

 605. 



Yield. 



Pounds. 

 9,746 

 7»423 

 7,423 

 6, 261 

 6, 261 

 6, 261 

 5,680 

 5,680 

 5,099 

 5,099 

 5,099 

 5,099 

 5,099 

 5,099 

 5,099 

 5,099 

 5,099 

 5,099 

 5,099 

 4,518 

 4,518 

 4,518 

 4,518 

 4,518 

 4,518 

 4,518 



"The number of stars indicates how many times the line has appeared among the 20 highest rankings. 

 Lines not starred in columns 3 and s appear and are starred elsewhere in the table. None appear 

 three times, 18 appear twice, and 31 appear only once. 



In Tables XIX and XX a portion of the data from Table XVIII is 

 assembled for the purpose of a more critical study of the performance of 

 the highest-yielding and lowest-yielding 20 of the 100 lines. 



