48 



The Bulletin. 



The following table will help to bring out the variation more forcefully: 



Edgecombe 

 Farm 



Year ^^m'"^ Year 



I 



Russell's Big Boll: 



Highest yield 682.61 



Lowest yield 287.52 



Difference 395.09 



Culpepper's Improved: 



Highest yield 



Lowest yield 



Difference 



King's Improved: 



Highest yield 



Lowest yield 



Difference 



Excelsior Prolific: 



Highest yield 



Lowest yield 



Difference 



Edgeworth: 



Highest yield 



Lowest yield 



Difference 



Cook's Improved: 



Highest yield 



Lowest yield- 



Difference 



Simpkins' Improved: 



Highest yield 



Lowest yield 



Difference 



Iredell 

 Farm 



1906 

 1909 



367.87 

 199.05 



1903 

 1905 



289.85 

 224 .32 



168.82 



65.53 



Year 



1909 

 1904 



*One year only. fFarm discontinued. 



A study of this table shows that on the Edgecombe farm there was a much 

 wider range of variation than on either of the others, the Red Springs farm 

 coming second and the Iredell farm giving the least variation. Although the 

 test on the Edgecombe farm gave the widest variations, they also gave the 

 greatest aggregate yield for the period over which the tests were run. This 

 would teach that, if one could obviate this wide variation and still retain 

 the high yielding quality of some of the best varieties of cotton, the section 

 of country adjacent to the Edgecombe farm would be the greatest cotton 

 section of the State. It is entirely possible that this can be done by a system 

 of careful seed selection. 



Another striking contrast brought out by these figures is the comparison 

 of yields for the same year on the Edgecombe and Iredell farms. With the 

 exception of Culpepper's Improved, all the varieties gave their largest yields 

 on the Iredell farm the same year that they gave their smallest yields on 

 the Edgecombe farm. Just why this should be is not known. The season 

 of 1908 was very late and this may have affected the growth of cotton more 



