Jamb Agricultural Science Past Questions For Year 2021
Question 21
The main source of power for subsistence agriculture is
- A. animal
- B. machine
- C. electricity
- D. man
Question 22
The method of irrigation suitable for use on a steep slope is
- A. sprinkler irrigation
- B. flood
- C. furrow irrigation
- D. shadoof
Question 23
The effects of practicing crop rotation include the following except
- A. maintaining and improving soil fertility
- B. controlling soil erosion
- C. adding humus to the soil
- D. preventing the build-up of pests and diseases
Question 24
Fertile soil is one which
- A. which easily drained
- B. is well aerated
- C. can produce a good harvest of cowpea
- D. contain all essential plant nutrients in suitable proportion
Question 25
If urea fertilizer contains 46% nitrogen, calculate the amount of nitrogen in 25kg bag of fertilizer?
- A. 11.5kg
- B. 13.5kg
- C. 21.5kg
- D. 26.5kg
