730 



It must ill so be remembered that superphosphates d<> not give such 

 good results in soils that are low or deficient in lime. In a soil low 

 in lime a large dressing of farmyard manure in conjunction with 

 either bone-meal, ground steamed bones, or basic slag, gives better 

 results than superphosphates. 



I have calculated Ville's formulae to the manures that are more 

 in use at the present time, omitting that of the sulphate of lime 

 which may be added, if required, or ground limestone may be 

 applied in its place. If ground limestone is added, it should be 

 put into the soil some weeks before the other manure, more 

 especially if sulphate of ammonia is to be used, the same may be 

 said of basic slag. Lime and basic slag are liable to cause a loss of 

 ammonia by decomposing the sulphate and setting the ammonia 

 free. Then in calcareous soils there is no need for the addition of 

 the sulphate of lime. In the following recalculations of Ville's 

 formuhe the sulphate of lime is left out : 



NORMAL MANTRK, No. i. 



NORMAL MAXURK, No. 2. 



When kainit is used in place of 

 sulphate of potash. 



Superphosphate of lime. 

 Sulphate of potash, 50 " 

 Nitrate of soda 



Ibs. per acre, 



350 

 I 4 8 



345 



Kainit 



350 

 525 



345 



< S 45 



1220 



