EXPERIMENT STATION REPORT. 433 



On account of the death of certain trees, seven in all, and a large 

 percentage, it is difficult to derive any results from the four years of 

 the test — a period all too short for experiments of this kind. 



If the fruit from all trees that died during the four years is 

 omitted, the average for each row is by years as follows : 



1897. 1898. 1899. 1930. Average. 



Rowl 4.9 2.64 10.5 10.1 7.04 



" 2 4.8 3.30 15.4 12 2 8.92 



" 3 5.0 6.03 15.9 10.7 9.47 



" 4 44 6.00 14.7 140 9.77 



" 5 4.8 5.25 15.1 12.0 9.29 



" 6 3.8- 4.60 14.7 14 9.27 



" 7 4.9 5.54 185 13.6 10.63 



Much of the largest yield was during the last two years. The 

 averages do not show any remarkable variations in yield, excepting 

 that row 1 is quite low and row 7 considerably above the others, the 

 middle five being very near the same figure. The unpruned row 

 (No. 4) was better than the average of the treated trees. 



The following table is of the averages for the rows with soil treat- 

 ment in common : 



Rowl. Row 2. Row 3. Rowl Row 5. Row 6. Row 7. 



1897 5.43 5.18 2.93 3.50 5.17 4.64 4.54 



1898 5.83 5.57 4.93 4.37 4.50 4 35 4.18 



1899 17.60 18.00 13.70 13.00 13.80 16.30 13.30 



1900 13.70 14.40 10.90 13.60 10.00 11.60 11.50 



Average... 10.64 10.79 8.11 8.62 8 37 9 22 8.38 



If the conclusion is to be drawn from the yield of crop, the aver- 

 ages show nothing striking for either the sod treatment or the culti- 

 vation of the soil. It is to be noted that the best yield in the 

 cultivated area was unmanured, and the same is true for the portion 

 in sod ; but the differences «,re so small that the individuality of the 

 trees might account for the variation. With the cultivated land, 

 barnyard manure gave better results than the commercial fertilizers, 

 but in the sod land the two corresponding rows were the same. If 

 anything is indicated, it is that the soil of this orchard was suffici- 

 ently rich for a full yield of Keiffer pears without additional fertiliz- 

 ing for at least the four years covered by the experiment. 



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