Waec Agricultural Science Questions
Question 676:
The system of growing arable crops at the early stage of forest establishment is referred to as
- A Selective exploitation
- B Regeneration
- C Afforestation
- D Taungya system
- E Forest regulation
Question 677:
The physiological changes that show up during disease attack on crop plants are referred to as
- A Signs
- B Symptoms
- C Necrosis
- D Deformations
- E Abnoemalities
Question 678:
The major pest of maize in Southern Nigeria is called
- A Budworm
- B Stem borer
- C Leaf worm
- D Aphid
- E Mealy bug
Question 679:
Which of the following insect pests of crops is usually controlled by fumigation?
- A Bean weevil
- B Capsid bug
- C Cotton stainer
- D Grasshopper
- E Yam beetle
Question 680:
A major symptom f onion/twister is
- A Appearance of dark brown spots on leaves
- B Motting of leaves
- C Rottening of roots
- D Rottening of bulds
- E Premature drying of leaves