Jamb Agricultural Science 2021 Past Questions and Answers

Question 16:

• JAMB 2021

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 17:

• JAMB 2021

The method of irrigation suitable for use on a steep slope is

A. Sprinkler irrigation
B. Flood
C. Furrow irrigation
D. Shadoof

Question 18:

• JAMB 2021

The main source of power for subsistence agriculture is

A. Animal
B. Machine
C. Electricity
D. Man

Question 19:

• JAMB 2021

The most suitable source of power for stationary equipment on the farm is

A. Machinery
B. Electricity
C. Animal
D. Man

Question 20:

• JAMB 2021

An important farm machine used for coupling many implements is

A. Disc harrow
B. Harvester
C. Tractor
D. Plough