Pests of crops that feed by piercing and sucking plants include the following except
- A. stem borers
- B. aphids
- C. cocoa mirids
- D. cotton stainers
- E. cassava mealy bugs
The mosaic symptom commonly associated with viral diseases of crops can be best observed on
- A. roots
- B. stem
- C. leaves
- D. fruits
- E. flower
Which of the following groups comprises only oil crops?
- A. groundnut, jute and cotton
- B. melon, coconut and sisal hemp
- C. coconut, cotton and sunflower
- D. sunflower, rubber and jute
- E. oil palm, sunflower and jute
The pest designated as a national pest by the Nigeria Agricultural Advisory Council is
- A. variegated grasshopper
- B. thrips
- C. capsid
- D. cricket
- E. weevil
The following are forestry crops except
- A. tectona grandis
- B. gmelina arborea
- C. anarcadium
- D. pinus eliotis
- E. chlorophora excelsa
The most common weed of pastures in Nigeria is
- A. spear grass
- B. goat weed
- C. water leaf
- D. tridax
- E. sida
If the seed rate for guinea corn is 5.6 kg per hectare, what will be the amount of seeds required for planting 35 acre farm?
- A. 75.1
- B. 78.4
- C. 568.2
- D. 784.5
- E. 960.3
Root knot of tomato is caused by a
- A. fungus
- B. bacterium
- C. virus
- D. protozoan
- E. nematode
Incubators are used to supply heat to
- A. day-old chicks
- B. sick fowls in cold weather
- C. cockerels to increase their libido
- D. poultry attendants for protection against cold
- E. fertilized egg for chick development
Which of the following is not a limitation of farm mechanization?
- A. technical know-how
- B. capital
- C. small holdings
- D. lack of spare parts
- E. labour
What are give and take lines often used in farm surveying?
- A. leveling measurements of farms
- B. chain measurements of farmlands
- C. measuring diversion or obstruction in a farmland
- D. measuring turning points during surveying
- E. measuring farms with irregular boundaries
Soil can be drained by the use of the following except
- A. sprinklers
- B. channels
- C. gutters
- D. ditches
- E. porous pipes
Which of the following farm practices does not have a very harmful effect on the soil?
- A. crop rotation
- B. land clearing
- C. overgrazing
- D. flooding
- E. bush burning
Which of the following is the function of nitrosomonas in the nitrogen cycle?
- A. ammonification
- B. volatilization
- C. nitrification
- D. dentrification
- E. nitrogen fixation
The type of soil formed is affected by the following factors except
- A. farming systems
- B. climate
- C. vegetation
- D. topography
- E. parent material
Which of the following will not contribute to soil formation in Nigeria?
- A. carbonation
- B. oxidation
- C. temperature
- D. hydrolysis
- E. glaciation
By which of the following ways is the agricultural production in Nigeria affected by topography
- A. lowering of crop quality
- B. determining the manure requirement of a farm
- C. lowering the leve of production
- D. increasing the pest incidence on crops
- E. influencing the area of land, actually available for agriculture
Which of the following factors is not considered in 5the use of irrigation?
- A. weed seed distribution over the farm
- B. cost of maintenance
- C. availability of water
- D. build up of pests and diseases
- E. prevention of salt accumulation through adequate drainage
Which of the following is a disadvantage of using organic manure on the soil?
- A. spreading of pests and diseases
- B. reducing the rate of evaporation from soil surfaces
- C. improving the nitrogen content of soil
- D. increasing the humus content of soil
- E. preventing erosion and leaching
Which of the following nutrient element is a macro-nutrient?
- A. phosphorus
- B. zinc
- C. iron
- D. manganese
- E. boron
The major factor influencing the physical or mechanical breakdown of rocks into finer particles include the following except
- A. man
- B. animal
- C. wind
- D. water
- E. solution