HOW TO MAINTAIN FERTILITY 



An equal amount of sulphate of potash can be 

 supplemented for the muriate of potash if that 

 form is best for the crop. 



This is enough for the spring application to 

 one acre, but it should be supplemented by two 

 or three dressings of nitrate of soda at intervals 

 during the season, giving about one hundred to 

 two hundred pounds each time. 



The formula just given reduced to amounts for 

 a small area, say a 25 X 100-foot plot, would be 



Nitrate of soda 2% pounds 



Sulphate of ammonia 5 pounds 



Dried blood 7% pounds 



Acid phosphate 27% pounds 



Muriate of potash 7% pounds 



and the subsequent dressings of nitrate of soda 

 would be five to ten pounds each. 



The ingredients of this formula may be changed ; 

 for instance, if bone meal is more accessible, an 

 equal amount can be substituted for the acid phos- 

 phate, but the phosphoric acid will not be so quick- 

 ly available. 



When mixing fertilisers great care must be 



taken to evenly distribute all the ingredients 



[43] 



