60 



CHEMICAL FERTILIZERS ; AND LIME 



SEAWEED. (Two samples) x 



Moisture at 100 C. . . . 12.05 



Nitrogen 1.66 



Phosphoric acid 0.44 



Potassium oxide 3.81 



Calcium oxide 2.73 



Magnesium oxide 1.48 



ii 



14.96 

 1.28 

 0.17 

 0.36 

 3.86 

 1.30 



Fertilizer Formulas for Various Crops 



There is no exact method of determining the fertilizer or plant-food 

 needs of the various crops. Certain guides have been established, 

 however, from analyses of the plants and other means, and some of 

 these block formulas are given here for the information of the con- 

 sultant. The careful grower will make tests of his own (see p. 56), 

 and use formulas only as guides. 



Formulas suggested by the Maine Experiment Station. 



It is to be borne in mind in using these formulas that they are only 

 suggestive and that different conditions of soil make such different 

 treatment essential that a formula which may prove successful on one' 

 farm may not be equally so on another. In no case is it to be expected 

 that fertilizers will take the place of good tillage and care of crops. 



