22 



fhe aoi4 radicals were det«railn«<i f i in the soil under 



tn 



o©tton f^r the 1st, 2nd, 3rd, and 4tli fe©t,^a Norfolk gar ly 

 ssoil (Bu. Srilfl 26, 39). th« reault« follow In Table >C. 

 faTt>X« X : Amount water Soluble WO3 aa4 IBPO4 In So lie 

 under Cotton in HorfoUc Sandy Soil, Goldstruo, Iff.C, 

 Sijtrfaoe :^oot 

 Month Hfeo HO3 HPO4 

 April 10.13 26.70 16.20 

 May 9.06 50.00 10.56 



Jime 6.9S 3?. 56 ®.86 

 July 3.41 3.99 10.21 

 August 5.26 2,54 .72 



Sept. 3.74 1.30 2.68 



# rd foot 

 April 16.20 22.70 0.70 

 Hay 15.75 8.07 3.61 



June 13.85 

 July 11.73 

 August 10.99 

 Sept. 12.61 



6.51 6.70 



7.66 6.94 



4.60 .77 



4.88 1.55 



