Copper deficiency is most likely to occur under which of the following soil conditions?
A) well drained loamy sand Ultisol with pH 6.1
B) muck soil (Saprist) with pH 5.5
C) silt loam soil with pH 7.0
D) poorly drained calcareous soil with pH 7.6
E) soil with pH 4.3 and subject to frequent flooding
Question 2
Which of the following nutrient elements is usually present in the soil solution as an undissociated acid?
A) Zn B) Mo C) Fe D) Cu E) B