204 t FERTILIZERS 



take into consideration not only the form of element to 

 use, the crop to receive the fertilizer, and the kind of soil, 

 but he must also consider the cost. 



REFERENCES 



Hall. Fertilisers and Manures. 

 Halligan. Soil Fertility and Fertilizers. 

 Pranke. Cyanamid. 

 Van Slyke. Fertilizers and Crops. 

 Wheeler. Manures and Fertilizers. 



