FERTILIZERS 



153 



Practical Exercises 

 1. Experimental Tests with Fertilisers 

 Fill ten five-inch earthen flower pots with clean sand, 

 and add fertilizers to the different pots as follows : 



1. Nothing. 



2. Nitrate of soda (one-half teaspoonful). 



3. Acid phosphate (one teaspoonful). 



FIG. 47. LIMING THE SOIL 



4. Muriate of potash (one-fourth teaspoonful). 



5. Nitrate of soda and acid phosphate. 



6. Nitrate of soda and muriate of potash. 



7. Acid phosphate and muriate of potash. 



8. Nitrate of soda, acid phosphate, and muriate of 

 potash. 



9. Same as No. 8, but double the amount of each. 



10. Stable manure. 



