STUDIES ON OAT BREEDING. 121 



average weight varied from 42.8 to 37.0 pounds per bushel 

 with an average of 39.9. Comparing with Table 3, it will be 

 seen that this average is over two pounds per bushel higher 

 than in 1913, showing that the increased yield was accompanied 

 by an increase in quality. 



The number of days from planting to harvesting varied 

 from 105 to 90 with an average of 97. This was an average of 

 four days less than in 1913. 



Work in 1915. 



In order to test more thoroughly some of these pure lines a 

 number of the poorer ones were discarded entirely as showing 

 nothing essentially better than already found in commercial 

 varieties. Certain other of these pure lines were held over 10 

 be tested more thoroughly in later years. Twelve of these lines 

 were grown in quadruplicate plots in 1915 in connection with 11 

 of the best commercial varieties. The pure line plots alternated 

 with the plots of the commercial varieties. A map of these 

 191 5 plots has been published in connection with another paper 13 . 



These 191 5 plots were located on the east side of the farm 

 road leading from the buildings on Highmoor Farm to Ben 

 Davis No. 1 orchard. They were on the end of the field 

 next to the orchard. This land had been in grass in 191 3. 

 This field had been cropped for several years and was some- 

 what deficient in humus. It was plowed in the fall of 1913 

 and in 1914 a crop of buckwheat was grown and turned under. 



The method of preparing the land, fertilizing, planting, etc., 

 were the same as in previous years. The plots were planted on 

 April 21 and 22, about 10 days earlier than usual at Highmoo 5 ". 



The detailed results of the 1915 test of the 12 pure lines are 

 given in Table 5. The lines are arranged in the order of their 

 corrected yield. 



From this table it is noted first that the yields, both observed 

 and corrected, are somewhat lower than in 19 14, but distinctly 

 higher than in 1913. The season of 191 5 was in many respects 

 favorable for oats. In particular there was abundant moisture 



"Surface, F. M. and Pearl, R. On a Method of Correcting for Hetero- 

 geneity in Variety Tests. Journ. Agr. Research, Vol. V., pp. 1039-1050, 

 1916. 



