Journal of Agricultural Research 
Vol. V, No. i 
18 
SAND 
Five sets of tests were conducted with wheat growing in sand similar 
to those with the Greenville soil. 
In figure 7 the results for sodium chlorid, sodium sulphate, and sodium 
carbonate are given. The noticeable thing about these results, as well 
NaCI 
• = One plant. — — 0,1 gm. dry matter. 
Fig. 7.—Diagram showing the number of wheat plants up and dry matter produced in 14 days on coarse 
sand with sodium sulphate, sodium carbonate, and sodium chlorid in different combinations and con¬ 
centrations. 
e.oooppm. 
• = One plant. 
aooo/ap/TL 
40.000 ppm. 
Fig. 8—Diagram showing the number of wheat plants up and dry matter produced in 14 days on coarse 
sand with calcium chlorid, magnesium chlorid, and potassium chlorid in different combinations and con. 
centrations. 
as all those for sand, is that 'only about half as much salt is required to 
stop growth in sand as in either the Greenville soil or the College loam. 
The same general relations between the salts are shown here as in 
the Greenville soil, except that in the sand sodium carbonate is propor- 
