a) How many pounds of phosphorus (P) is this?

b) How many pounds of fertilizer will you apply?

2) (30 pts.) Compare and contrast the terms nitrogen fixation, phosphorus fixation, and potassium fixation.

3) (30 pts.) The addition of ammonium-containing fertilizers will lead to the accumulation of nitrate by the process of _______________. This process (increases, decreases) soil pH.

4) (10 pts.) Name the nutrient deficiency on the demonstration plant.

(This would be something really basic--N, P, K)