408 THE MONTHLY BULLETIN. 



No very large applications of sulphur need be or should be made at 

 any time. Our results indicate that there is nothing to be gained by 

 applying more than 300 pounds of sulphur per acre in one year. It 

 will not suffice indefinitely, lio-svever, since large yields of alfalfa con-' 

 sume sulphur very rapidly. 



Undoubtedly there are many soils to which our results will not apply. 

 They certainly will not apply to soils rich in sulphur, as are some of the 

 volcanic ash soils. 



At the present time the cheapest form of sulphur, including freight, 

 for our section of Oregon, is crude powdered sulphur. In many locali- 

 ties sulphur in the form of gypsum is just as cheap or cheaper. 



SULPHUR USED BY OTHER PLANTS. 



The following plants use more sulphur per acre than alfalfa where 

 large yields are obtained : cabbage, turnips, and mustard. 



The following, judging from chemical analyses, require compara- 

 tively small quantities of sulphur : wheat, barley, oats, corn, and fruit 

 trees. 



