With Soy Beans: — This crop followed the white mustard, occupy- 

 ing the field in 1896. 



1. It showed a close dependence upon an application of potash 

 — resembling corn and clovers in this respect. 



2. The crop was not materially increased by the application of 

 either nitrogen or phosphoric acid. 



Our conclusions with reference to the questions proposed are : — 



1. This crop differs widely in its requirements from both the rye 

 and the mustard which had preceded it. 



2. No "• specials " are made for this crop in our state ; but fertil- 

 izers for it should be rich in potash. 



GENERAL CONCLUSIONS. 



1. It has been shown that the widest differences in plant-food 

 requirements exist between crops cultivated upon the same soil ; 

 corn, clovers, rye and soy beans being benellted mostly by potash; 

 grasses and oats, by nitrogen ; and mustard, cabbages and Swedish 

 turnips, by phosphoric acid. 



2. Our experiments indicate the desirability of changes in the 

 composition of the complete '•'•special'" fertilizers offered in our 

 markets. For most crops these fertilizers contain too much phos- 

 phoric acid. For oats and grass they contain too little nitrogen. 

 ^3. It is believed that for none of our crops, except those of the 

 mustard family, is the ap[)lication of phosphates to supplement farm 

 manure called for. 



PRACTICAL ADVICE. 



Farmers are urged to try experiments with fertilizers with a view 

 to getting light as to the requirements of different crops upon their 

 own soils ; for soils as well as crops differ in manurial needs. Plain 

 directions for simple experihients will be sent upon application to all 

 who desire to try such experiments. 



Under existing conditions farmers are advised to purchase fertil- 

 izer materials and to make their own mixtures, rather than to pur- 

 chase mixed or complete special fertilizers. This course is believed 

 to be advisable for two reasons : first, because the '• specials " are 

 not properly compounded, and second, because the needed plant- 

 food can be thus procured at lower cost. 



