284 AGRICUI.TURS OF MAINE). 



Fisher Formula. 

 The so called "Fisher Formula" is made up as follows : 



Nitrate of soda ^cq tbs. 



Sulphate of ammonia icq tbs. 



Sulphate of potash 230 lbs. 



Acid phosphate 220 tbs. 



Kieserite 50 tbs. 



Giving a mixture of 1,000 tbs. 



This formula gives about 8.6% nitrogen; 11.9% phosphoric 

 acid; 3.3% potash. At the present prices this would cost about 

 $49.00 per ton. 



By using 10 tbs. to a tree, or 400 tbs. to the acre, it would 

 give about 34.4 tbs. of nitrogen ; 47.6 tbs. of phosphoric acid and 

 13.2 tbs. of potash per acre, at a cost of about $9.80. 



Orono Station Formula. 

 The Orono Station formula as used by Prof. Munson in his 

 orchard experiments in the State is made up as follows : 



Nitrate of soda 200 tbs. 



Sulphate of ammonia 75 lbs. 



Muriate of potash 225 tbs. 



Acid rock 500 tbs. 



Giving a mixture of 1,000 tbs. 



This formula gives about 3% nitrogen; 51% phosphoric acid; 

 8% potash. This would give a value of about $25.00 per ton. 



By using 10 tbs. to the tree, or 400 tbs. to the acre, this would 

 yield 12 tbs. of nitrogen, 22 tbs. of phosphoric acid and 32 tbs. 

 of potash to the acre at a cost of about $5.00. 



ASHES AS A FERTILIZER. 



The average analysis of unleached hard wood ashes as given 

 by the Orono Experiment Station gives the following as the 

 amount in pounds from 100 pounds of ashes. 



Phosphoric acid 3.3 tbs. 



Soluble potash 8.0 tbs. 



Lime 36.5 tbs. 



For unleached, household, soft wood ashes: 



Phosphoric acid 1.8 tbs. 



Soluble potash 2.6 tbs. 



Lime 23.6 tbs. 



