Agricultural Science

Question 1

1The yam minisett technique produces planting material by

Medium

A. growing yam from true seeds only B. grafting yam onto cassava C. tissue culture only D. cutting yam tubers into small pieces that are treated and planted

Question 2

2Yam is propagated using

Easy

A. flowers B. seeds C. setts or small whole tubers D. leaves

Question 3

3The optimum soil pH for most cereal crops is about

Hard

A. 8.5–9.5 B. 6.0–7.0 C. 10–11 D. 3.0–4.0

Question 4

4The critical period of weed competition in maize is about

Hard

A. after harvest B. just before harvest C. only at tasselling D. the first 3–6 weeks after planting

Question 5

5Seed rate refers to

Easy

A. seed colour B. seed price C. germination speed D. the quantity of seed needed per unit area

Question 6

6Lowland rice is grown mainly in

Easy

A. rocky hills B. flooded or waterlogged fields C. deserts D. dry sandy soils

Question 7

7Weeding in crops should be done

Easy

A. early, before weeds compete strongly B. only at harvest C. never D. after harvest only

Question 8

8Maize planting distance is commonly about

Medium

A. 75 cm × 40 cm B. 3 m × 3 m C. 10 m × 10 m D. 5 cm × 5 cm

Question 9

9Rice is best grown in

Easy

A. rocky hills B. lowland areas with plenty of water C. dry sand D. deserts

Question 10

10Arable crops are

Easy

A. crops grown on cultivated land, usually annual B. grass for animals C. flowers only D. trees only