The best way to preserve maize grains on a large scale is by
- A. storing under the sun
- B. storing in earthen pots
- C. hanging over fire places
- D. storing in soils
Ananas comosus is a
- A. fruit crop
- B. oil crop
- C. beverage crop
- D. pasture crop
In cassava farming, rapid growth is promoted at the expense of tuber formation by the application of
- A. potassium fertilizer
- B. nitrogen fertilizer
- C. complete fertilizer
- D. phospate fertilizer
The following crops are common staple foods in West Africa except
- A. coconut
- B. maize
- C. cassava
- D. cowpea
A fruit which will not normally be used in the manufacture of jam is
- A. orange
- B. pineapple
- C. garden egg
- D. pawpaw
Mechanization in West Africa is limited by the following except
- A. size of farm holding
- B. technical know-how
- C. capital
- D. labour
Farm mechanisation in West Africa is not limited by
- A. the large population of farmers
- B. poverty among the farmers
- C. inadequate infrastructure facilities
- D. seasonality of agricultural production
Which of the following parts of a tractor is most essential in operating a mower?
- A. steering wheel
- B. top link
- C. power-take-off shaft
- D. stabilizer chains
A farm implement used for planting grains is the
- A. drill
- B. ridger
- C. harrow
- D. plough
Water power is harnessed and converted into electrical power by
- A. blades
- B. cranes
- C. turbines
- D. hovercraft
The most unreliable source of farm power is
- A. wind
- B. water
- C. electricity
- D. machine
Which of the following methods of irrigation is best for a farm with an undulating landscape?
- A. sprinkler
- B. flooding
- C. furrow
- D. basin
Farm drainage does not lead to
- A. improvement in soil structure
- B. improvement of oil temperature
- C. increased soil aeration
- D. reduction of soil alkalinity
Which of the following will not lead to loss of nitrogen compounds from the soil?
- A. crop removal
- B. burning
- C. lodging
- D. leaching
In the nitrogen cycle, nitrite is oxidized to nitrate by
- A. nitrobacter
- B. nitrosomonas
- C. azotobacter
- D. rhizobium
Leguminous cover crops do not
- A. bind the soil particles together through their roots
- B. increaes the nitrogen content of soils
- C. aid in improving the soil organic matter content
- D. reduce the soil microbial population
A disadvantage of using organic manure on the soil is that
- A. it decreases the potassuim content of the soil
- B. diseases spread fast
- C. it increases the humus content of the soil
- D. it reduces the rate of soil water evaporation
Which of the following processes will not lead to the loss of nutrients from the soil?
- A. erosion
- B. mulching
- C. harvesting
- D. leaching
Which of the following soil water is tightly held to the surface of soil particles?
- A. hygroscopic water
- B. gravitational water
- C. capillary water
- D. superfluous water
The most important soil micro-organism causing decay and nutrient recycling are
- A. bacteria and fungi
- B. fungi and algae
- C. algae and actinomycetes
- D. bacteria and algae
What is the percentage porosity of a soil sample whose volume is 250cm when the volume of air is 200cm?
- A. 20
- B. 25
- C. 50
- D. 80