164 Journal of the Department of Agriculture:. 



The following mixtures, in quantiiies per morgen, will conform 

 approximately to the requirements: — 



1. (a) Green Manure — 



450 lb. bone-dust (or 550 lb. supeii)hosph;iie, or TOO lb. 



slag, or 500 lb. Cape Cross). 

 750 lb. kraal ash. 



(h) Green Manure — 



500 11). bone-dust, oi' GOO lb. superphosphate, or 800 lb. 



slag, or 550 lb. Cape Cross). 

 180 lb. sulphate of potash. 



2. 7^ tons stable or kraal manure. 



350 lb, bone-dust (or 400 lb. superphosphate, or 550 lb. slag, 

 or 370 lb. Cape Cross — but when these are used, the manure 

 should be increased to about 8 or tons. If the mauure is 

 of inferior quality, more should be applied). 



-'). (a) 800 lb. Government guano. 



100 lb. bone-dust (or 120 lb. superphosphate, or 150 lb. 



slag, or 110 lb. Cape Cross). 

 GOO lb. kraal ash. 



(6) 450 lb. GoA^ernment guano. 



250 lb. bone-dust (or 270 lb. superphosphate, or ^JGO lb. 

 slag, or 250 lb. Cape Cross — but when these are used 

 the guano should be increased to 500 lb.). 



2000 lb. Karroo sheep manure. 



{c) 800 lb. Government guano. 



150 lb. bone-dust (or 175 lb. superphosphate, or 240 lb. 



slag, or 165 lb. Cape Cross). 

 150 lb. sulphate of potash. 



4. 500 lb. blood-meal (or 300 lb. sulphate of ammonia, or 400 lb. 

 nitrate of soda). 

 500 lb. bone-dust. 

 180 lb. sulphate of potash. 



(Other forms of phosphate can be used here, but then the 

 amount of blood or other nitrogen fertilizer will have to be 

 increased. If kraal ash is used to supply potash, the amount of 

 phosphate will be slightly reduced ; and if sheep manure is 

 used the amount of nitrogen fertilizer will be considerably 

 reduced, and the amount of phosphate slightly reduced.) 



It will readily be seen that a great number of different systems of 

 fertilizing can be adopted, depending on the raw materials at the 

 disposal of the farmer. Economy, of course, is a most important 

 factor. Bone-dust has been taken throughout as the source of phos- 

 phate, as it is probably the most economical form to-day. But 

 market values are liable to fluctuate, and alternative quantities of 

 other forms of phosphate are given, in case they should, in the future, 

 prove more economical than bone-dust. In the following table the 



