Question 1 of 20 2,054 total questions
Which of the following insects transmits swollen shoot disease of cocoa?
A stem borer
B mealybug
C whitefly
D scale insect
Yellow colouration of the lower leave of a growing maize plant may be due to deficiency in
A potassium
B phosphorus
C zinc
D nitrogen
A regulatory control of diseases in crop production is
A rouging
B quarantine
C crop rotation
D soil tillage
In crop production, ginger is propagated by
A seed
B bulb
C rhizome
D corm
Tomatoes are staked in order to
A accelerate their growth
B induce flowering
C accelerate fruit ripening
D prevent rotting of fruits
Corms,rhizomes and tubers are examples of
A underground stems
B underground roots
C modified leaves
D earial stems
The correct sequence for the use of coupled implements for land preparation is
A plough,horrow and ridger
B harrow,ridger and plough
C plough,ridger and harrow
D harrow,plough and ridger
The use of animal traction is limited in the forest zones of West Africa because of the
A topography of the forest land
B presence of tsetseflies
C high amount of rainfall
D culture of the people
Limitations of farm mechanization in West Africa do not include
A land fragmentation
B high capital investment
C availability of spare parts
D high level technical know-how
The instrument which enables a surveyor to find the direction of a base line is
A abney level
B ranging pole
C plumb bob
D magnetic compass
Which of the following statement is a disadvantage of human power? it
A controls other sources of farm power
B brings about least damage
C is easily available and controlled
D has low output
The following are advantages of sub-surface irrigation except that
A it is suitable for soils with low water holding capacity
B it can be used only for specific types of crops
C the rate of evaporation is greatly reduced
D it reduces the incidence of pests
The following fertilizers can be used to neutralize soil acidity except
A wood ash
B ammonium nitrate
C limestone
D calcium phosphosilicate
Which of the following groups of rocks is formed as a result of volcanic eruption?
A lomestone,basalt and shale
B basalt,granite and pumice
C sandstone,granite and quartzite
D marble,gneiss and shale
The following crops will enrich the soil with nitrates except
A calopogonium
B pueraria
C centrosema
D exoriepus
A detrimental effect of bush burning is that it
A destroys soil organic matter
B destroys weed seeds
C sterilizes the soil
D adds potash to the soil
Which of the following statements about soil organisms is false?
A soil pH will attack population of soil organisms
B population of soil living organisms is increased with increase in soil organic matter
C soil with good texture and structure cannot harbour soil microbes
D soil temperature affects the activities of soil organisms
Which of the following properties of soil determines its water-holding capacity? I. Texture II. pH III. Colour IV. Structure
A I and II only
B I and IV only
C II and III only
D III and IV only
Which of the following statements is correct about micro-nutrients? They
A promote formation of only root nodules
B are required by plants in very small quantities
C are fixed into the soil through microbial activity
D increase crop tolerance to pest attack
In which layer of the soil profile do most biological activities occur?
A D-horizone
B C-horizone
C B-horizone
D A-horizone
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