Oct. 4. 1915 Effect of Alkali Salts in Soils on Crops 45 



nesium salts in soils do not show them to be particularly toxic. This is 

 probably due in part to the high lime content of the soils used. 



An attempt is made in Table XVI to bring together a summary of 

 results for salts applied to soil singly and in combination. These are 

 grouped as sulphates, carbonates, nitrates, chlorids, and the sodium salts. 

 Under each salt are given certain figures which, when multiplied by 1,000, 

 give the parts per million of salt added to the soil. Each figure is the 

 average for Greenville loam, College loam, and sand. The results include 

 the number of plants germinating in each glass, the weight of dry plant 

 material produced in each glass, the average height of plants, and the 

 average number of days required for the plants to come up. 



