696 



Agriculhiral Journal of Victoria. 



very small response of Southern soils generally to potassic appli- 

 cations : — 



YlKLDS pKOniCED BV 



From these figures it will be seen that ni combination with a 

 phosphatie manure, potash, in the qnantity nsed, has shown as a 

 maximum eifect an increase of 1 cwt. only of hay to the acre. This 

 slight effective action of potash is again confirmed by the returns 

 showing the addition of an equal quantity of potash to combinations 

 of the two phosphatie fertilizers with nitrogen. 



The Effect of Li(;ht Aih^licatioxs of Potash. 

 It will be remembered that light applications of a nitrogenous 

 fertilizer in combination with small quantities of a phosphatie manure 

 gave far heavier relative increases in yield than heavier applications. 

 The same appears to take place with potash also, although to a 

 less degree. The results of these tests are embraced in the returns 

 of Table C. Potash has been given exclusively in the form of 

 sulphate in this case. 



Icwt. Superphosphate, In favor of 



1 cwt. Superphosphate. l-3rd cwt. Potash Sulphate 



Average of 23 fields . . 



2-23 tons. 



2-32 tons. 



Potash 



■09 tons. 



