126 Subtropical Vegetable-Gardening 



the sea coast, it is customary to give a heavy application of 

 salt; this may be applied without injury at the rate of 

 two pounds to the square yard. The application of salt 

 seems to do benefit chiefly by keeping down weeds, and 

 where the cost of salt is less than the cost of cultivation it 

 may pay to apply it. 



Fertilizer for asparagus. 



The proportion of fertilizer ingredients for asparagus 

 should be as follows : ammonia, 5 per cent ; available 

 phosphoric acid, 7 per cent ; potash, 5 per cent. Use 1500 

 pounds to the acre. When possible, 20 to 40 tons of 

 vegetable material should be applied, such as partially 

 rotted Takings, or barnyard manure. When such vege- 

 table matter is procurable, the quantity of nitrogen may be 

 decreased proportionately. If manure is procurable, al- 

 lowance may be made for the fertilizer elements contained 

 therein. Ten thousand potmds of asparagus (edible 

 part) contained 21 pounds nitrogen, 10 pounds phos- 

 phoric acid, and 26 pounds potash. 



The following table indicates the amounts of different 

 fertilizing materials necessary to give the desired quantity 

 01 eacn element i pounds to the acre 



800 to 1000 cottonseed meal ; or 

 350 to 400 nitrate of soda ; or 

 275 to 300 sulfate of ammonia ; or 

 400 to 600 dried blood. 



Phosphoric acid . . . 750 to 1000 acid phosphate. 



300 to 500kainit; or 



150 mm'iate of potash ; or 



150 sulfate of potash, high-grade; or 



250 to 300 sulfate of potash, low-grade. 



Ammonia 



Potash 



