.1228 



EARLE V. HARDENBURG 



Altho the increased yields were due partly to the increased values of 

 manure and fertilizer used, this factor has been studied in a separate 

 grouping in table 25 under the discussion of the value of manure and 

 fertilizer for the region. The low average rate of planting for this county 

 in 1912 was due partly to the planting of a considerable area in check- 

 rows and partly to the use of small and relatively inferior seed. The data 

 show that the amount of seed used probably did not exceed the maximum 

 which the relatively low soil fertility could support. The coefficient of 

 correlation between rate of planting and yield for this region, 0.374 db 

 0.031 (fig. 141), is the highest found for any of the four regions. 



Yield per acre, in bushels 



3 



=3 g 



3 9 

 10 

 8 11 



" 12 

 o 13 



S 14 



S 15 



m 6 



17 



18 



2 5 26 64 73 78 52 38 9 10 2 1 360 

 r = 0.374 0.031 



FlG. 141. CORBELATION OF BATE OF PLANTING AND YIELD ON 360 STEUBEN COUNTY FARMS 



IN 1912 



Rate of planting in Monroe County 



The average amount of seed per acre used in Monroe County in 1913 

 was 12.5 bushels, which was the same average as was used on Long Island 

 in 1912. The relation of this factor to yield is shown in table 61. Altho 

 there was a tendency among the growers who planted the most seed to 

 use more manure and fertilizer, the influence of seed is nearly as marked 

 in this region as in the others. A few growers used as much as 20 bushels 

 or more per acre, and, without using more fertilizer than was used by 

 growers planting from 14 to 16 bushels per acre, they obtained an average 

 increase in yield of about 25 bushels per acre. It appears, however, that 



