10 



BULLETIN 99, U. S. DEPARTMENT OF AGRICULTURE. 



the four years, 7 are from series 34, Burt X Sixty-Day; 9 are from 

 series 8, Danish Island X Asia Minor Rustproof; 4 from series 33, 

 Burt X Burt; and 1 each from series 3, Golden Giant X Asia Minor 

 Rustproof; series 49, Sixty-Day X Clydesdale; series 50, Sixty-Day 

 X Probsteier; series 123, Welcome; and series 131, Pringle Progress. 



AVERAGE YIELDS FOR THE VARIOUS SERIES. 



The most valuable hybrid combinations included in the tests at 

 the Iowa station are series 3, Golden Giant X Asia Minor Rustproof; 

 series 8, Danish Island X Asia Minor Rustproof; series 31, Burt X 

 Red Rustproof; series 33, Burt X Burt; series 34, Burt X Sixty-Day; 

 and series 44, Asia Minor Rustproof X Garton Tartar King. Among 

 the commercial varieties the highest average yields were produced 

 by selections from series 63, Burt; series 123, Welcome; series 125, 

 Silvermine; series 131, Pringle Progress; and series 165, Sixty-Day. 

 The annual and average yields of each series for the four years are 

 shown in Table III. 



Table III. — Annual and average yields of each series of oat selections grown at the Iowa 

 station in a 4-year test, 1909 to 1912, inclusive. 



Series No. 



Number 

 of selec- 

 tions. 



Yield (bushels per acre). 



1909 



1910 



1911 



1912 



Average. 



Hybrids: 



3 



3 



16 



1 



20 



1 



32 



7 



2 



10 



27 



2 



2 



3 



1 



14 



133 



34 



12 



62.00 

 59.94 

 49.00 

 47.00 

 37.00 

 37.22 

 47.71 

 50.50 

 48.90 

 47.26 

 35.50 

 35. 00 

 34.00 

 40.00 

 36.21 

 34.56 

 35.97 

 27.58 



66.33 

 69.50 

 52.00 

 57.20 

 62.00 

 59.44 

 61.29 

 45.50 

 64.90 

 58.19 

 54.00 

 54.00 

 53. 33 

 65. 00 

 59.79 

 56.97 

 61.26 

 44.75 



18.67 

 16.62 

 5.00 

 12.85 

 20.00 

 18.28 

 20. 57 

 21.00 

 18.90 

 19.59 

 7.50 

 7.50 

 16. 33 

 22.00 

 17.57 

 11.32 

 14. 23 

 11.67 



63.33 



70.62 

 39.00 

 52.80 

 49.00 

 43.59 

 59.57 

 49.50 

 69.80 

 68. 52 

 54. 50 

 70.00 

 60.00 

 8.5. 00 

 64.93 

 61.59 

 54.97 

 52.17 



52.33 



8 



54.31 



25 



36.00 



27 



42.40 



28 



42.00 



30 



39.22 



31 



47.43 



32 



41.50 



33 



50.60 



34 



48.41 



38 



38.00 



41 



42.00 



42 



41.00 



44 



53. 00 



48 



44.36 



49 



41.28 



50 



41.71 



51 



34.25 







Total 



320 









1 





39.06 



58.13 



14. 25 



59.43 



42.72 









Commercial varieties: 



62 



17 

 6 

 3 

 1 

 1 

 1 

 6 

 6 

 8 

 2 

 2 

 2 

 1 

 5 



40.29 

 41. 33 

 36.33 

 40.00 

 51.00 

 41.00 

 44.00 



40. 33 

 40.37 



41. 50 

 45. 00 

 43.00 

 39.00 

 38. 60 



52.41 

 69.50 

 59.33 

 69.00 

 90.00 

 77.00 

 70.50 

 64.00 

 69. 50 

 58.50 

 54.00 

 67.00 

 50.00 

 63.20 



22.12 



18. 67 

 13.00 

 14.00 

 24.00 

 21.00 

 16. 50 

 24. 50 

 20.50 

 19.50 

 21.00 

 24.50 

 30. 00 

 24.20 



64.12 

 62.00 

 46.67 

 52.00 

 65.00 

 45. 00 

 45. 50 

 61.67 

 45.12 

 42. 50 

 48.50 

 62.00 

 29.00 

 55.60 



44.88 



63 



48.00 



117 



38.67 



118 



44.00 



123 



58. 00 



124 



46.00 



125 



44.17 



131 



47.67 



132 



44.00 



137 



40.50 



138 



42.00 



165 



50.00 



5938 



37.00 



Burt 



45.60 







Total 



61 













Average 



40.89 



62. 46 



20.90 



55.43 



44.92 









SUMMARY. 



320 

 01 



39.06 

 40.89 



58. 13 

 62.46 



14.25 

 20.90 



59.43 

 55.43 



42.72 





44.92 







Total.. ^ 



381 













Average 



39. 36 



59.04 



15.31 



58.79 



43.12 



