Motes ox the Fertilizer Act. 



39 



We find that for one of nitrogen the proportion of phosphoric 

 oxide varies from 1.8 to 9, while potash varies from to 3.3. On 

 examining- some of the mixed fertilizers offered one would conclude 

 that manuring- was a fairly exact science, as instance the following : — 



The apparent nicety with which these crops can. judging by the 

 above figures, distinguish variations in the proportions in which the 

 fertilizer constituents are present is remukable. We are confident 

 that these differences would not be reflected by the crop under 

 ordinary farming conditions. It would have been better had the 

 manufacturers confined themselves to one mixture only. 



It is possible, of course, that in the Aariety of maize fertilizers 

 listed above the farmer may find one which exactly suits his require- 

 ments, but no farmer can afford to determine by experiment — the only 

 satisfactory way — which will be the most suitable for his conditions. 



