STUDIES ON OAT BREEDING. 



I»T 



In addition it is an excellent yielder. It ranks second in point of 

 yield in the four year test. 



So far as the results of these tests go the Imported Scotch 

 has proved itself the most desirable variety of any tested for 

 all four years. 



B. VARIETIES TESTED TWO AND THREE YEARS. 



There are eleven varieties that have been tested more than 

 one year but less than four. It will be of interest to examine 

 very briefly the average yields of these varieties and the amount 

 of variation shown. Of course two or even three seasons is too 

 short a time to judge the yielding ability of a variety. These 

 data are given for what they are worth, simply an indication of 

 what these varieties may do. 



In Table lo these eleven varieties are arranged in the order 

 of their average yield per acre. The standard deviations and 

 coefficients of variation have been calculated although in many 

 instances the probable errors are so large that the constants have 

 little meaning. 



Table io. 

 Yield of Grain, Varieties Tested Two and Three Years. 





Bushels per Acre. 



Coefficient 



Variety. 



1910 



1911 



1912 



1913 



Mean. 



Standard 

 Deviation. 



of 

 Variation. 



Early Pearl. 



66.1 

 46.7 



55.0 



39.1 

 47.5 



1 



64.2 69.7 

 50.071.0 

 52.767.7 

 53.865.2 

 54.5 62.8 

 47.964.2 

 44.1 63,4 



50.4 - 



47.5 54.4 

 57.7; - 



43.3 52.2 



66.9±].31 

 60.5±5.01 

 60,2±3.58 

 59.5 ±3.20 

 57.4±1.48 

 56.1 ±3.89 

 53.7 ±4,60 

 51.9±4.31 

 50.9±1.65 

 50.6±1.95 

 47.7±2.10 



2.75 ±0.93 

 10.50 ±3.54 

 7.50±2.53 

 6.70 ±2.26 

 3.80±1.05 

 8.15±2.75 

 9.65 ±3.25 

 11. 07 ±3. 05 

 3.45±1.16 

 5.01 ±1.38 

 4.40±1.48 



4.11 ±1.39 



Siberian 



Minnesota No. 26 



Gold Rain 



17.35 ±6.03 

 12.46 ±4.27 

 11.26 ±3.85 



American Clydesdale 



Abundance 



White Plume 



6.62±1.83 

 14.53 ±5.00 

 17.97 ±6.25 

 21.33 ±6.14 



Rebred 60 Day 



6.78 ±2.30 



Danish Island 



Daubeney 



9.90 ±2.75 

 9.22 ±3.14 



Average 



56.4 



47.2 



51.5 63.4 



55.94 



6.63 



11.96 



From this table it will be seen that the Early Pearl gave the 

 best yield of any of these varieties. In fact its average for the 

 two years of 66.7 bushels is larger than any of the four year 

 averages in Table 8. It has given a better average for the two 

 years that it has been tested than any other variety except the 



