SOIL, MANURES AND WATERING. 365 



Sulphate of Ammonia is also used for its nitro- 

 gen, and is less likely to injure the plants than nitrate 

 of soda. For all plants in which a large leaf develop- 

 ment or rapid growth is desired, this chemical is a very 

 valuable fertilizer. One pound to fifty square feet of 

 bench, or a tablespoonful to a bushel of soil, or three 

 gallons of water, can be safely used. 



MIXED CHEMICAL MANURES. 



Nearly every fertilizer manufacturer puts up a fer- 

 tilizer prepared for greenhouse use, and, if purchased in 

 large quantities, they can be obtained at rates but little 

 above the market rates for the materials. 



The following mixtures will be found useful to be 

 added to the soil for nearly all greenhouse crops: Two 

 hundred pounds pure ground bone, 30 pounds sulphate 

 of potash, 50 pounds sulphate of ammonia, or 50 pounds 

 of nitrate of soda; or 200 pounds ground bone and 50 

 pounds nitrate of potash. Either of the above can be 

 used at the rate of one pound to twenty square feet of 

 bench surface, or to two bushels of soil for repotting. 



If desired for use as a liquid manure in water, dis- 

 solved bone black should be employed instead of ground 

 bone, in the following proportions: One hundred 

 pounds of dissolved bone black, 50 pounds sulphate of 

 potash and 50 pounds nitrate of soda, or 50 pounds sul- 

 phate of ammonia. Or, 100 pounds dissolved bone black 

 and 50 pounds nitrate of potash, used at the rate of a 

 tablespoonful of either mixture to a gallon of water. 



LIQUTD MANURES. 



In addition to the use of the above chemicals dis- 

 solved in water, every florist should employ at frequent 

 intervals, especially during the summer, liquid fertilizers 

 made from the animal manures, for which purpose the 

 manure of the sheep, hen, pigeon, cow, or horse, may 



