IQO 



Journal of Agricultural Research 



Vol. IV, No. 2 



Table II. — Effect of various fertilizer salts on the moisture content of soils 



Treatment. 



NazCOg 



Manure extract. 



NaNOj 



NaCl 



CaCO, 



CaHj(P04)2 . 



KCl 



K,S04 



(NH,)2SO,. . 



Water-retaining power. 



Increased with — Not affected with — Decreased with — 



r Sandy loam . 

 \ Clay- loam. . 

 JSandy loam . 

 \Clay loam . . 

 f Sandy loam . 

 \Clay loam . . 

 I Sandy loam. 

 \Clay loam . . 



f Sandy loam . 

 \Clay loam . . 

 /Sandy loam . 

 \Clay loam . . 



Cla)^ loam . . 



Clay loam . . 



Clay loam . . 



Sandy loam. 

 Sandy loam. 

 Sandy loam. 



3/ / 



e 29 /2 2G /O 2& 



ZZaZ Z//.0 203.2 /93.S /S6.7 /7S.e /7/S /S/.^. /S0.2 y-^.Z /32.0 /23.Z //SS 



Fig. 2. — Curve showing the differences in the moisture content of treated and check clay-loam soils. 



It has already been said that the effect of the single salts on the surface 

 tension of the solutions was too small for any measurable changes in the 

 moisture condition of soil to be expected from this source. In the case 



