Multiple Choice
Disease suppressive soil often results from _____.
A) Fumigation with a volatile chemical.
B) Heating the soil by natural solarization or steam heat.
C) Repeated tillage to keep the soil bare for at least one full year.
D) Adding organic materials to the soil that stimulate diverse microorganisms.
E) All of the above.
Correct Answer:

Verified
Correct Answer:
Verified
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