A MORE ELABORATE PLAN FOR EXPERIMENTING. 



For those who wish to make a more detailed experi- 

 ment, so as to study the effects of different combinations 

 of potash, phosphoric acid and nitrogen, a more elaborate 

 plan is given on page 34. 



The plan comprises seven plots of equal size and 

 separated by paths four feet wide. The size of the plots 

 must depend somewhat on local conditions and the kind of 

 crop to be grown. A very convenient size is one-tenth of 

 an acre. A strip 93^- feet long by 46! feet wide, would 

 represent one-tenth of an acre in convenient shape. How- 

 ever, it may be best to arrange differently if the size is not 

 convenient. Each plot should be numbered separately. 



