Agricultural Science Questions
Question 441:
The effect of clearing agricultural lands clean of all vegetation and or trees include the following except
- A Exposure of soil to erosion
- B Compaction of soil
- C Desertification
- D Complete removal of soil nutrients
- E Exposure of subsoil
Question 442:
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 spinkler system
- D Its efficiency on water distribution in steep slopes is poor
- E There is considerable maximization on use of water
Question 443:
Chlorosis observed along the veins of leaves is a characteristic symptom for the deficiency of
- A Nitrogen
- B Magnesium
- C Potassium
- D Phosphorus
- E Sulphur
Question 444:
The removal of excess water from the soil surface and the upper subsoil is known as
- A Irrigation
- B Drainage
- C Evaporation
- D Surface turn-off
- E Dehydration
Question 445:
Which of the following is not an effect of manuring on the soil?
- A Adding plant nutrients to the soil
- B Releasing adequate plant nutrients of the appropriate time
- C Facilitating soil aeration and movement of soil moisture
- D Enhancing the activities of soil microorganisms
- E Improving the structure of the soil