406 STATE HORTICULTURAL SOCIETY. 



A received the following mixture at the rate of 3^ lbs per tree, or 337 lbs 

 per acre: 



Kieserite (50 per cent. MgS0 4 ) 7.5 ft>s 



Muriate of potash (50 per cent. K>0) 45.0 



Dissolved bone black (16 to 18 per cent, soluble) and average P 2 05___i 135.0 



Total 187.5 



In 1889 this was evenly distributed from near the trunk of the tree 

 outward so as to cover about two thirds of the surface of the plat. The 

 second spring three fourths of the surface was covered from the trunk 

 outward. The third spring two thirds of the surface was covered in the 

 same manner. 



B received the same mixture as A, but double the quantity each year, i. e., 

 6^ lbs per tree or about 675 lbs per acre. The first spring this was broad- 

 casted over the whole surface. The next spring it was sowed from the 

 trunk outward over about four fifths of the surface. The third spring it 

 was sowed in the same manner, but over only about two thirds of the 

 surface. 



C received the following mixture : 



Kieserite 7.5 lbs 



Muriate of potash 90.0 



Dissolved bone black 135.0 



Total 232.5 



In other words, the mixture was the same as for A, except that the 

 muriate was doubled. 



This was put on annually at the rate of 3.87 lbs per tree, or 418 lbs per 

 acre. The first two springs about four fifths of the surface was covered in 

 the manner already described. The third spring the treated area around 

 each tree was restricted a little, so that only about three quarters of the 

 whole surface of the plat was covered. 



D having more cases to start with, was believed to be in greater danger, 

 and was treated more liberally. It received annually 7f lbs per tree, or 

 837 lbs per acre of the following mixture: 



Kieserite 15 lbs 



Muriate of potash 180 



Dissolved bone black 270 



Total 465 



In other words, D received the same mixture as B and double as much 

 muriate of potash; or, to state the matter still differently, A received a 

 minimum of muriate, B and C received twice as much; and D received 

 four times as much. 



About three quarters of the whole surface of D was covered the first 

 and third spring, and about nine tenths the second spring, in the manner 

 already described. 



The total quantity of fertilizer used on these four plats, during the 

 three years, is as follows: 



