40 



Here, again, barnyard manure, because it is a nearly 

 perfect fertilizer, is one of the best and most easily 

 obtainable for the purpose. Ground bones, burned 

 bones, marls and rock phosphates are the fertilizers of 

 commerce and are being more and more extensively 

 used. 



EFFECT OF POTASH APPLIED TO MARSH SOIL. 



Source of Potash. Potash is especially essential to 

 the production of fruits, potatoes and root crops. In 

 most cases, when other conditions are perfect, under- 

 sized, shriveled and imperfect fruits and roots are 

 due to a lack of potash. Here again barnyard manure 

 is the usual remedy. Wood ashes are especially val- 

 uable because of the potash which they contain. They 

 should never be wasted, but saved and put on the land. 



