568 



Journal of Agricultural Research 



Vol. XIX. No. II 



TabIvE XXI. — Three-year average numerical production of marketable tubers per hill from 

 loo Early Six Weeks tuber lines 



Line No. Yidd. 



519 

 520 

 522 

 523 

 524 



526 



528 

 529 

 530 

 531 

 532 

 533 

 534 

 535 

 536 

 537 

 538 

 539 

 540 

 541 

 543 



3.02 

 2. 41 

 2. 84 

 2. 69 

 3.00 



3-07 

 2.86 



3- 23 

 2. 90 

 2.79 

 3- 16 

 3-45 

 3- 13 

 3- 27 



3-47 

 3-69 



2. 72 

 3.00 

 2.79 



3-43 

 2.81 



3-^5 



3. 12 



3-47 

 3- 02 



Line No. 



543 

 545 

 546 

 547 

 548 

 549 

 550 

 551 

 552 

 553 

 554 

 555 

 556 

 558 

 559 

 560 



561 

 562 



563 

 564 

 565 

 566 

 568 



569 



570 



Yield. 



23 

 33 

 93 

 86 



36 i 



39 ^ 



65 : 



40 i 

 00 



74 i 

 80 , 

 06 i 

 79 i 



Line No. 



571 

 572 



573 

 574 

 575 

 576 

 577 

 578 

 579 

 580 

 581 

 582 

 583 

 584 

 58s 

 586 

 588 

 589 

 590 

 591 

 592 

 593 

 594 

 595 

 596 



Yield. 



3.18 

 3. 20 

 2.70 



3- 15 

 3-27 

 2.84 



3-95 

 3. 00 

 2.86 



3- 23 

 3- 40 

 3-48 

 3- 20 

 3- 64 

 3-5° 

 3-3° 

 3.00 



3-78 

 3-34 

 3- 40 

 3- 29 

 3-39 

 2-93 

 3-8r 

 3. 60 



Line No. 



597- 

 599- 

 600. 



601 . 



602 . 

 603. 

 604. 

 605. 

 606. 



! 607. 



! 608. 



609. 

 I 610. 

 I 611. 

 I 612. 

 i 613. 



614. 



615. 

 616. 

 617. 

 618. 

 619. 

 620. 

 621 . 

 622. 



Yield. 



25 

 22 



15 

 29 

 27 

 47 

 85 

 25 

 32 

 50 

 95 

 90 

 II 

 97 

 43 

 23 

 40 



77 

 II 



16 



52 



C50 

 02 



17 

 28 



Table XXII. — Twenty highest of 100 Early Six Weeks tuber lines when ranked on j-year 

 average numerical production of marketable tubers per hill « 



» The lines starred also appear among the 20 highest-yielding when ranked on 3-year average production 

 by V eight. Thirteen of these lines (in bold-face type) have uniformly good vine characteristics; the 

 othei 7 lines contained plants suggesting degeneration. Average of group, 3.65 tubers per hill. 



Table XXIII. — Twenty lowest of 100 Early Six Weeks tuber lines when ranked on J-year 

 average numerical production of marketable tubers per hill^ 



" The lines starred also appear among the 20 lowest yielding when ranked on 3-year average production 

 by weight. The lines printed in bold-faced type appear among the 40 chosen in 1918 as having good 

 vine characteristics. Average of group, 2.71 tubers per hill. 



