Agriculture Past Questions And Answers
121
The parent material of a soil is formed from the disintegration of
- A. Sand
- B. Silt
- C. Gravel
- D. Rock
122
The effects of practicing crop rotation include the following except
- A. maintaining and improving soil fertility
- B. controlling soil erosion
- C. preventing the build-up of pests and diseases
- D. adding humus to the soil
123
Which of the following factors has the greatest influence on crop production?
- A. light
- B. vegetation
- C. water
- D. air movement
124
In agricultural production, farm gate price is mostly enjoyed by
- A. middlemen
- B. producers
- C. commodity boards
- D. cooperative societies
125
Soil profile important in agriculture because it
- A. Determines the soil catena
- B. Determines the type of the landtenure system
- C. Gives indication of types of cropsto grow
- D. Promotes the weathering of rocks
126
Which of the following plant diseases is not caused by fungi?
- A. rice blast
- B. maize streak
- C. cassava leaf-spot
- D. maize rust
127
A moistened soil sample which can be moulded to form a smooth continuous ring is characteristic of
- A. sandy clay
- B. heavy clay
- C. loamy sand
- D. clay loam
128
Weeds which produce large hollow seeds would most likely be dispersed by
- A. wind
- B. water
- C. insect
- D. explosion
129
Parboiling is a term associated with the processing of
- A. cowpea
- B. melon
- C. sorghum
- D. rice
130
What is the percentage of water content of a soil sample if the mass of fresh soil is 180 gm and mass of dried soil is 120 gram?
- A. 45.5%
- B. 40.4%
- C. 38.3%
- D. 33.3%