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