Jamb Agricultural Science Past Questions For Year 2020
Question 16
Which of the following is not an advantage of drip-irrigation?
- A. fertilizers can be applied through the system
- B. there is reduction in the concentration of salt in the root zone
- C. the system operates on a much lower line pressure than sprinkler system
- D. its efficiency on water distribution in steep slopes is poor
Question 17
The best control ensure for rinderpest disease in cattle is
- A. sanitation
- B. vaccination
- C. use of antibiotics
- D. eradication of infected stock
Question 18
Which of the following characteristics is not correct of pigs?
- A. prolific animals
- B. efficient feed converters
- C. source of meat
- D. source of land
Question 19
During the processes of soil formation, the cracks or crevices that are first noticed on the rocks are normally caused by
- A. ice
- B. man
- C. wind
- D. temperature
Question 20
The soil nutrient which is important as a constituent of plant proteins and hormones is
- A. calcium
- B. sulphur
- C. iron
- D. potassium
