1921.] 



Notes on Manures. 



66T 



Percentage Composition of Ordinary Purchased Manures. 



Nitrogen Phosphoric Equal to Pofa'<h. 

 (N). acid (l\^0 s). Phosphate (KjO), 



Nitrate of ammonia 



34.8 







Nitrate of soda 



1-5 -5 







Nitrate of lime ... 



13 







Sulphate of ammonia ... 



20-20-4 







Nitrolim ... ... 



14.5-15 











1 11-5 



26 



Superphosphate (soluble only) 





\ 13-6 



30 







' 16-0 



35 







1.) 1 





Basic slag 





jl5 .> 









I 9"l 



20 



Raw bones 



5 



22 



t Q 



-to 



Bone meal ... ... ... 





20—25 



43—5.5 



(a usual analysis) 



3*75 



20 "6 



45 



Steamed, bone flour ... ... 



1 

 i— z 



Zo—.iz 



00— J 



Dissolved bones ... 



2-3 



15-16 



33-35 



Sulphate of potash 









Muriate of potash (pre-war usual 









quality) ... 









„ „ (now obtainable) 









Kainit (pre-war, usual quality) 









Sylvinite (French Kainit) 









Rape cake ... 



5 



2 



4 



Ashpit refuse, variable, about ... 



0-5 



0-5 



1 



Sewage sludge, variable, about ... 



1 



1 



2 



„ (activated) 



6 



4 



9 



Fish meal 



8-10 



4.5-9 



10-20 



Phosphate guano ... 



5-8 



n-18 



30-40 



