Final Exam Questions

Soil that has high base saturation (BS) has to have alkaline pH, since its exchange complex (or diffuse double layer)is dominated by the base-forming cations.

Cation exchange capacity (CEC) on its own does not tell us anything about the type of cations, it only gives us the total number of cations that that soil can adsorb. Hence, from the CEC itself (and without any other info) we cannot make any assumption about BS.

I am not sure what exactly was the question 7c (don't have time to go and look for it now) but I believe that it asked something along the line to choose one of 4 pH ranges based on the various types of info given in that question. Based on the high BS in that soil the most likely pH range would be around 7.5 to 8.5