434 



Report of Farmers' Institutes 



Composition of Some Fertilizing Materials Used as Sources of Nitrogen, 



Phosphorus, and Potassium 



Material 



Acid phosphate 



Ammonium sulphate 



Basic slag phosphate 



Blood, dried red 



Blood, dried black 



Bone, ash 



« black 



" black, dissolved 



" dissolved 



Bone meal, steamed 



*' " from glue-making. . 



" raw 



Cottonseed meal 



Fish, dried and ground 



menhaden 



acidulated 



dog-fish scrap 



whale scrap 



Kainit 



Meat scraps 



Muriate of potash (see potassium 



chloride) 

 Nitrate of soda (see sodium ni 



trate.) 

 Nitrate of potash (see potassium 



nitrate.) 

 Phosphates 



Florida hard rock 



Florida land pebble 



Peace River pebble 



South Carolina land 



Tennessee blue 



Tennessee domestic 



Potassium chloride, 80 to 85%.. . 



" carbonate, 90 to 95% . 



96 to 98%. 



" nitrate 



sulphate, 90 to 95% . . 

 " double manure salt, 



48 to 53% 



Potassium manure salt, 20% .... 



Sodium nitrate 



Tankage, general range 



" concentrated 



" crushed 



" garbage 



pounds in 100 



Nitrogen 



20 



13 to 15 

 6 to 12 



1 to 2 



2 to 3 



1 to 1.5 



3 to 4 



7 to 8 



8 to 10 



5 

 7.5 to 9 

 11.5 



13 to 14 



13 



15 to 16 

 4 to 10 



10 to 12 

 4 to 9 

 1 to 2 



Phosphoric Acid (PiOt) 



Total 



13 to 18 

 10 to 18 



30 to 35 

 25 to 35 

 13 to 16 

 13 to 16 

 23 to 25 

 25 to 30 

 21 to 25 



2 to 3 



5.5 to 7 

 3 



3 to 6 

 0.8 



36 

 31 



28 

 27 to 28 



30 

 32 to 34.5 



2 to 18 



2 to 4 



3 to 18 

 0.5 to 1 



Available 



12 to 16 



12 to 14 

 12 to 14 



Potash 

 {K,0) 



1.5 to 2 



12 to 13 



50 to 53 

 61 to 64. 

 65 to 66 . 

 44 

 48 to 51 



26 to 29 

 11 



0.5 to 1 



