AGBICULTCEAL EXPERIMENT STATION. 



13 



6(v ?ca goo goo 



A study of the tables and diagram shows: 



1. All the plants receiving- the phosphate of iron and alumina 

 show a gain over those receiving no phosphate. This effect was most 

 marked with the corn, the yield being - three times as great as where 

 no phosphate was used. The weight of the tomato plants was 

 doubled. The turnips and ruta-bagas responded vigorously, the crop 

 of roots being doubled. On the other hand, the peas and potatoes 

 gained but little. 



2. All the plants receiving- the insoluble Florida rock show a 

 gain over those to which no phosphate was given, the crops of clover 

 ruta-bagas, corn, tomatoes and ruta-bag-a roots being more than 

 doubled. The barley, potatoes and especially the potato tubers 

 gained but little. All the plants showed a gain over those receiving 

 the phosphate of iron and alumina except in the case of the barley, 

 corn, turnip roots and potato tubers. 



