Food for 

 Plants 



154 



The Use of Nitrogenous Fertilizers 



on Vegetables. . 



Kale. 



An application of 50 pounds of Nitrate of Soda and 100 

 pounds of Dried Fish per acre, in May, increased the growth 

 30 per cent. 



Lettuce. 



An application in March at the rate of 250 pounds of 

 Nitrate of Soda and 750 pounds of Dried Fish per acre, 

 to Lettuce, in cold frames, made the crop ready to market 

 one week sooner and increased the yield five pounds per sash 

 or 12,000 pounds per acre; which at two cents per head 

 would have a value of ^240 per acre. 



Potatoes. 



Several experiments have been tried on the use of Nitrate 

 of Soda as a top-dressing for early potatoes. This was 

 applied at the rate of 100 pounds per acre, after the potatoes 

 were up and started to growing. One year this treatment 

 increased the yield of merchantable potatoes 100 bushels per 

 acre, and the average of several years was 20 per cent, 

 increase. 



Tomatoes. 



Some of the early work of this Station was with fertilizers 

 for tomatoes. The results in detail are given in Bulletin 

 No. 91, but it showed that Nitrate of Soda was particularly 

 active with this crop and produced a larger increase than any 

 other single ingredient. An application of 160 pounds per 

 acre caused an increase of as much as five tons of tomatoes. 



There has been much valuable work conducted upon the 

 use of Nitrogenous Fertilizers with various crops, and par- 

 ticularly vegetables. This work has proven that this plant 

 food is a potent factor in increasing the yields and improving 

 the quality. 



