Question 1 of 16 56 total questions
Which of the following sources of water is least useful for irrigation purposes?
A sea
B river
C lake
D borehole
When soils are poorly drained,
A they dry up easily
B they form hardpans
C the air content of the soil is reduced
D the rate of decomposition is accelerated
Which of the following is not an effect of water-logging on crop production? it
A inhibits plant development
B encourages leaching
C inhibits the activities of micro organisms in the soil
D causes plant roots to wilt
In the process of recycling carbon in nature, carbondioxide is used by crops during
A respiration
B decomposition
C photosynthesis
D transpiration
Nitrogen is taken up by plant roots in the form of
A nitrate ion
B nitrite ion
C nitric acid
D nitrogen gas
Which of the following describes the effects of excessive nitrogen application on the growth of maize plants?
A high vegetative growth with low yield
B high vegetative growth with high yield
C low vegetative growth with high yield
D low vegetative growth with low yield
Capillarity is highest in
An acidic soil can be neutralized by the addition of
A urea
B ammonium sulphate
C wood ash
D laterite
The most important factor that limits agricultural production in West Africa is
A temperature
B wind
C rainfall
D light
The primary purpose of establishing wildlife reserve is to
A conserve animals for hunting
B prevent extinction of wild animals
C provide constant supply of meat for export
D prevent wild animals from predating on other animals
Plant quarantine regulations are enforced to
A prevent the intoduction of foreign pests and diseases
B increase the resistance of crops to diseases
C encourage the importation of foreign crops
D discourage dependence on temperate crops
Most agricultural policies do not benefit rural communities because
A they aim at benefiting the national economy
B of poor implementation
C of lack of forigen exchange to import the required expertise
D they are formulated by non-practising farmers
When the government provides subsidies in agriculture,
A farm inputs are made available to farmers at reduced prices
B farmers obtain loans from agricultural banks
C farmers are given extended time to repay loans
D farming becomes less attractive
A major problem of grains storage in the rain forest zone of West Africa is high
A temperatures
B solar radiation
C wind speed
D humidity
The major export crops produced in the West African sub-region include
A coffee,pepper,tomato and groundnut
B cotton,cassava,coffee and ginger
C cocoa,rubber,groundnut and cotton
D cocoa,coffe,cashew and tomato
Subsistence agriculture mainly involves
A high capital input on the farm enterprise
B food production on large scale farms
C food production using family labour
D mechanisation of all farm operations
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