Food for 

 Plants 



Per cent Nitrogen. 



Nitrate of Soda 15 to 16 



Sulphate of ammonia i g to 22 



Dried blood 10 to 1 4 



Tankage 5 to i 2 



Dried fish scrap 9 to i i 



Cotton-seed meal 6 to 7 



Castor pomace 5 to 6 



Tobacco stems . 2 to 3 



Bone meal 2 to 4 



Peruvian guano 6 to i o 



Nitrate of potash 13 to 1 4 



Manures 0.3 to 1.6 



The following table shows the 

 Nitrogen removed in one year from 

 specified : 



Wheat 35 



Rye 30 



Barley 40 



Oats 60 



Corn 50 



Buckwheat 30 



Potatoes 200 



Sugar beets 15 



Mangel-wurzel 22 



Meadow hay 2 



Timothy 2 



Green corn 11 



Red clover 2 



Lucerne 8 



Sugar-cane 20 



Sorghum 15 



Cotton 750 



Hops 600 



Tobacco 1 600 



Grapes 2 



Cabbage 31 



Cucumbers 25 



Onions 11 



Oranges 10 



number of pounds of 

 one acre by the crop 



The following table shows the quantity of fertilizer 

 desirable for one acre, with the percentage of Nitrogen in 

 it. The quantities given are for the average soil, under 

 average conditions, the character and amounts of other 

 plant-foods in the fertilizer not being considered here : 



