Experiments upon Swedes. 15 



Plot 1 5. Manured with G cwts. of Turnip-manure. 



tons. cwts. qrs. Ibs. 



Produce* ' .. .. .. .. 20 7 16 



Increase .. 5 12 3 12 



The turnip-manure used in these experiments on analysis 

 gave the following results : 



Moisture .. .. 15-16 



*Sulphate of ammonia .. , 8'64 



, I Soluble nitrogenized organic matters . . 9*25 



(Insoluble nitrogenized organic matters .. 11-13 



Bi-phosphate of lime ... 4*99 



Equal to bone-earth rendered soluble . . (7*79) 



Insoluble phosphates (bone-earth) .. .. 16*48 



Hydrated sulphate of lime 19*26 



. Alkaline salts 12*55 



Insoluble siliceous matter ' _ .v . Vl .. 2-54 



100-00 



* Containing nitrogen T83 



f Containing nitrogen 3'91 



This is a very superior manure, which it will be seen pro- 

 duced a very large increase on Plot 13, though only 3 cwts. were 

 applied to the acre. It is somewhat remarkable that double the 

 quantity of this manure did not produce a much more consider- 

 able increase. 



Plot 14. Manured with 1 cwt. of Nitrate of Soda. 



tons. cwts. qrs. Ibs. 



Produce 18 9 1 4 



increase 3 15 



I am not aware of any accurate experiments in which nitrate 

 of soda has been used by itself for turnips. The effect which so 

 small a quantity as 1 cwt. of nitrate of soda produced on the crop 

 was decidedly beneficial, for it will be noticed that as 'large a 

 produce was obtained with 1 cwt. of nitrate of soda as with 

 3 cwts. of fine bone-dust. This result is certainly encouraging, 

 and suggests a series of trials with nitrate of soda upon root- 

 crops. The nitrate should be used in such trials by itself, as 

 well as in conjunction with superphosphate or bones. The 

 nitrate of soda used in this experiment was a good sample. It 

 contained in 100 parts 



Moisture 1-87 



Pure nitrate of soda 95'6<S 



Chloride of sodium -79 



Sulphate of soda 1-17 



Sand .. .. -49 



100-00 



