FIFTY-FIRST ANNUAL REPORT. 



37 



Data on Fertilizer Demonstrations on Old Apple Trees at the Farm ol" 

 Mr. M. S. Russell, Bangor, Michigan, 1920-1921. 



Nitrate of poda at $76 00 per ton. 

 Acid phosphate at $25 00 per ton. 

 Muriate of potash at $70 00 per ton. 

 All fertilizer was applied on April 23rd in 1920 and 

 on April 12th in 1921. 



Notes on Fertilizer Demonstration on Peaches at Edward Skinner's at 



Hartford, 1920-1921. 



CROP OF 1921 IS GIVEN. 



Comparing the average yield per tree of guard rows No. 1 and 4 with 

 the average yield of trees on rows 2 and 3 which received during the 

 two years, six pounds of nitrate of soda per tree at a cost of 15 cents, we 

 find the increase in yield when sold at $3.00 per bushel returned $2.62 

 per tree or $2.47 per tree less the cost of the fertilizer. 



Comparing the average yield of all trees in all guard rows and in the 

 check row with the average yield per tree of trees in rows 2 and 3 we 

 find the increase in yield, at $3.00 per bushel, returned $2.21 per tree or 

 $2.06 per tree less the cost of the fertilizer. 



Comparing the trees on rows 5 and 6 with the average of guard rows 

 4 and 7 we find the increase yield per tree returned $2.17 or $2.02 per 

 tree less the cost of the fertilizer. 



