• us 



Phosphate Fertilisers, 



Observations. 



For cLy soils deficient in Lime and all of the strong retentive lands 

 which may need Phosphates — Basic Slag— is the best form. It is ad- 

 visable to ai pl}^ it alone and early It must not be mixed with 

 manure containing ammonia Dose 2 to 20 cvvt. per acre according to 

 the crop and the object in view. Its action sjDreads over at least two 

 years. 



No. 1 is a Basic Slag purchased shrewdly as to price but really a 

 dear or inferior article owing to low standard of phosphates and very 

 poor Solubility (56 o/o.) This was bought by a banana planter for use 

 on a stiff soil deficient in available Phosphoric Acid. For 2s. per ton 

 more he might have obtained No. 2 Siag as used by the Board of 

 Agriculture. 



This was Albert's Slag of high grade in fineness showing 2 per cent 

 more Phosphate and a solubility ne .rly 50 per cent greater than that 

 of No. 1. In buying Basic Slag a guarantee of "fineness" should be 



