Table 13. Comparison of soil pH and extractable cations by zone 
(U - upper, M - middle, L - lower) in Blocks I, II, and 
III. Data represent the mean of 9 samples. (Block IV 
was not included since only two zones were analyzed for 
February) . 
Extractable Cations 
*Soil samples collected 9 February 1974. 
37 
