558 Journal of Agriculture, Victoria. [10 Aug., 191 i. 



The unit values and methods of calculation are shown hereunder : — 

 Unit Values of Manures for 1911. 



{Calculated from the declared prices of Fertilizers registered at the Office of Secretary 

 for Agriculture.) 



1 per cent, of nitrogen in the form of nitrate 



1 „ nitrogen in the form of ammonia 



1 ,, nitrogen in the form of blood 



1 ,, nitrogen in bonedusts, bone fertilizers, or animal fertilizers 



1 ,, water soluble phosphoric acid 



1 ,, citrate soluble phosphoric acid 



1 ,, phosphoric acid in fine bone 



1 .. insoluble phosphoric acid in superpliosphates, nitro-superphos- 



phates, ground phosphates, and guanos . . 



1 .. insoluble phosphoric acid in mixed manures, Thomas phos- 



phate, bone fertilizers, and in coarse bone 



1 .. potash in the form of chloride 



1 ,, potash in the form of sulphate 



Method of Calculating the Commercial Value of a Manure. 



The commercial value per ton of a manure sold in Victoria is obtained 

 by multiplying the percentages stated of the fertilizing substances by the 

 corresponding unit values fixed therefor and adding the separate values 

 together. Examples : — 



1. Nitrate of Soda. Invoice certificate or tag, 15.50 per cent. 



£ s. d. 

 Calculation— 15-50 x 17s. 4d. = .. .. . . 13 8 8 



Calculated value per ton = . . . . ..1388 



2. Superphosphate. Invoice certificate or tag : — 



Water soluble phosphoric acid . . . . 17 per cent. 



Citrate soluble phosphoric acid . . . . 1 ,, 



Insoluble phosphoric acid . . . . . . 2 ,, 



Total phosphoric acid . . . . 20 ,, 



£ s. d. 



Phosphoric acid (water soluble) — 17 x 4s. 8d. = .. .. 3 19 4 



(citrate soluble) — 1 x 4s. = . . . . 4 



.. (insoluble)— 2 x 2s. = .. .. .. 4 



Calculated value per ton . . . . . . ..474 



3. Bonedust. Invoice certificate or tag : — 



Nitrogen . . . . . . . . . . 3 • 50 f)er cent. 



Phosphoric acid .. .. .. .. 19'50 ,, 



Mechanical condition ; — 



Fine . . • • • • . . 40 per cent. 



Coarse . . . . . . . . 60 ,, 



£ s. d. 



Nitrogen— 3-5 x 12s- .. .. .. ..220 



19-50 X 40 ,. Q^ . 1 11 o 



Phosphoric acid, fine — ^r^ — / »u x 4h. .. i 11 j, 



T.1 T. • -1 19-50 X 60 ,, -^ o 1 ic 1 



Phosphoric acid, coarse — - = 11-70 x 3s. .. 1 15 1 



^ 100 



Total value per ton . . • ■ ..583 



