l82 



Bulletin 307 



Moreover, the groups of orchards varying in elevation by a difference of 

 only 20 feet are too small to admit of tabulation. They have been com- 

 bined, therefore, into groups differing by 100 feet. The elevation varies from 

 500 to 1 1 00 feet. The typical or prevailing elevation is between 800 and 

 900 feet. Over 50 per cent of the orchards are found at elevations from 

 800 to 1000 feet. 



TABLE 9. Distribution of Orchards According to Elevation 



Orchards 



Elevation (ft.) 



500- 600 

 600- 700 

 700- 800 

 800- 900 

 900-1000 

 1 000- 1 100 



Relation of elevation of orchards to yield and income 



The irregularities in the figures of Table 10 seem to show that there is 

 no relation between elevation of orchard and yield and income. The 

 four-year average yields per acre for the three groups 700-800 feet 800- 

 900 feet, 900-1000 feet, which contain a sufficient number of orchards to 

 be of statistical value, are practically the same, 56 barrels per acre. There 

 is slightly more variation in the incomes, which range from $101 to S108. 

 The maximum yield, 78 barrels, and maximum income, $144, are found at 

 the lowest elevation. The next highest values are found at the highest 

 elevation. In both these cases, however, the number of orchards upon 

 which the figures are based is hardly sufficient to give much importance 

 to the results. 



TABLE 10. Relation of Elevation of Orchards to Yield and Income 



