F Piants btained when grown under the intensive system. 



- The soil must be well prepared and an abundance of 



7 all the elements of plant-food supplied. Hence, the 



application of Nitrate may be greater than is usually 



recommended for grain crops under the extensive 



system. 



Although there are many valuable suggestions 

 offered by the experiments, at least two are of funda- 

 mental importance, and cannot be too strongly urged 

 upon the attention of farmers: 



1. That the constituents Nitrogen, phosphoric 

 acid and potash, as found in commercial supplies fur- 

 nishing these elements, do serve as plant-food, nour- 

 ishing the plant in the same manner as those in home 

 manures, and should, therefore, be liberally used, in 

 order to guarantee maximum crops. 



2. Of these constituent elements Nitrogen is of 

 especial importance, because it is the one element 

 which, in its natural state, must be changed in form 

 before it can be used by the plants. Hence, its applica- 

 tion in an immediately-available form is especially ad- 

 vantageous for quick-growing vegetable crops, whose 

 marketable quality is measured by rapid and contin- 

 uous growth, and for those field crops which make their 

 greatest development in spring, before the conditions 

 are favorable for the change of the Nitrogen in the soil 

 into forms usable by plants. 



