Which factors are used in the standard form of the Universal Soil Loss Equation (USLE)?
Correct answer D. R, K, S, L, C and P
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Agriculture MCQs
Page 27 of Agriculture multiple-choice questions with answers. Tap an option to check yourself.
Page 27 of 135
Approximately what proportion of Pakistan’s soils suffer from phosphorus deficiency?
Correct answer A. 90%
What is the process called in which eluviated materials are immobilised and accumulate at some depth below the soil surface?
Correct answer B. Illuviation
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Which soil-forming process, involving the mixing of stratified alluvium by earthworms, is the most important in Pakistan’s alluvial plain?
Correct answer C. Homogenization
What is soil made up of?
Correct answer D. All of the above
Which statement about soil is incorrect?
Correct answer D. Dirt which is threat to all living life & crop production
Which of the following makes up the mineral component of soil?
Correct answer D. None of the above
Which soil properties are affected by organic matter?
Correct answer D. All of the above
What names are given to soils containing more than 20% organic matter?
Correct answer D. All of these
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What is the combined study of soil genesis and soil classification called?
Correct answer A. Pedology
Weathering is the natural process of which of the following?
Correct answer D. Both A & C
What name is given to wind-transported material that is dominated by silt?
Correct answer A. Loess
The Indus plains of Pakistan developed from parent material carried down from the Himalayas by the Indus and its tributaries. What type of parent material is this?
Correct answer D. None of the above
Peat soils are absent from Pakistan because they develop only under which conditions?
Correct answer C. Both A & B
What term describes a group of soils formed from the same parent material but occupying different positions on a slope?
Correct answer B. Catena
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Which zone of the soil profile accumulates aluminium and iron oxides and clays washed down from the upper layers?
Correct answer A. Zone of illuviation
What are horizons such as AB, EB, BA and BE in a soil profile called?
Correct answer A. Transition horizons
What collective name is given to the O, A, E and B horizons, excluding the R and C layers?
Correct answer D. Solum
Apart from a few acid soils in the northern mountains of Pakistan (Mansehra, Swat, Dir), nearly all of the country’s cultivated soils have high base saturation and low organic matter (usually below 1%). What is their typical nature?
Correct answer D. Both A & C
Within the soil body (the soil profile), pedogenic processes change the parent material through which of the following?
Correct answer C. Both A and B