Which of the following is a disadvantage of using organic manure on the soil?
AGRICULTURE
WAEC 1990
Which of the following is a disadvantage of using organic manure on the soil?
- A. spreading of pests and diseases
- B. reducing the rate of evaporation from soil surfaces
- C. improving the nitrogen content of soil
- D. increasing the humus content of soil
Correct Answer: A. spreading of pests and diseases
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