Author Question: The redox potential of a soil is -250 mV. Which of the following forms of the pertinent elements ... (Read 169 times)

Beheh · **on:** Jul 22, 2018

The redox potential of a soil is -250 mV. Which of the following forms of the pertinent elements would you expect to find in the soil?

A) CO2 B) Mn4+ C) Fe2+ D) SO42- E) NO3-

Question 2

If you owned a dairy farm with poorly drained clay soils in a humid temperate region, which of the following would be most satisfactory from the standpoint of soil aeration and temperature?

A) no-till system
B) heavy organic residues
C) conventional moldboard plow system
D) ridge-till system
E) heavy chemical fertilization