Food for Experiments with Fertilizers on Tomatoes. 



Plants 



Yield per 



Kind of fertilizer used and Cost of acre in Value of 



quantity per acre. fertilizer. bushels. crop. 



1. No manure 613 $208 . 61 



2. 160 Ibs. Nitrate of Soda $4.00 838 300.64 



3. 160 Ibs. muriate of potash, 



320 Ibs. bone-black 7 . 20 649 252 . 92 



4. 160 Ibs. Nitrate of Soda, 160 



Ibs. muriate of potash, 300 



Ibs. bone-black 11 . 20 867 301 . 25 



5. 20 tons barn-yard manure. .. 30.00 612 218.27 



It will be noticed that 160 pounds of Nitrate of 

 Soda, costing $4.00, made an increase in the value of 

 the crop of $92.03 per acre over the unfertilized land, 

 and $82.37 over the land where 20 tons of barn-yard 

 manure, costing $30.00, was used. It will also be 

 noticed that the addition of phosphate (bone-black) 

 and potash had little or no effect. This does not indi- 

 cate that tomatoes do not require phosphoric acid and 

 potash, but that enough of these elements of plant food 

 was already in the soil. 



The yield of early tomatoes was very decidedly increased by 

 the use of Nitrate of Soda, both alone and together with phos- 

 phoric acid and potash. 



NEW JERSEY EXPERIMENT STATION. 



Bulletin No. 91. 



Some of the early work of this Station was with 

 fertilizers for tomatoes. The results in detail are given 

 in the Bulletin, but it showed that Nitrate of Soda was 

 particularly active with this crop and produced a larger 

 increase than any other single ingredient. An applica- 

 tion 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 particularly vegetables. This work has 



