Mcqs Submitted by Shafiq-ur-Rehman, Contributor at PakMcqs

From the point of view of crop production, Soil testing refers to______________?

A. Laboratory analysis assessing plant available nutrient status
B. Collection of plant leaves samples only
C. Salinity & elemental toxicity of a soil
D. Both A & C

Submitted by: Shafiq Rehman

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The diagnostic techniques used in evaluating soil nutrient status and determining fertilizer requirements of the crop include:

A. Nutrient deficiency symptoms & field experimentation
B. Greenhouse pot experimentation & soil testing
C. Plant analysis
D. All of the above

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The major soil fertility problems in Pakistani soils deficiencies of N, P and Zn. Deficiencies K, Fe, and B also occur in specific crop genotypes or soil types, while deficiencies of S, Cu, and Mn are negligible. however, the common nutrient deficiencies are_________________: and some micronutrients including Mo?

A. N, P, K
B. Ca, Mg, S
C. both A & B
D. The above statement is wrong

Submitted by: Shafiq Rehman

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According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation process. As the case in arid and semi-arid climates elsewhere in south-central/southern Asia and Sub-Saharan Africa; _________________ are among the major causes of soil degradation and desertification?

A. Drought stress
B. Accelerated erosion & salinization
C. Depletion of soil fertility and SOM
D. All of the above

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The kind, rate and intensity and pedogenic processes are controlled by ________ ,soil-forming factors?

A. 6
B. 7
C. 4
D. None of the above

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Pedogenic processes bring about changes in the parent materials in the form of _____________________, within the soil body (soil profile)?

A. Additions, losses
B. Transfers and transformations
C. both A and B
D. None of the above

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Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are ________________, with high base saturation and low organic matter content (generally less than 1%)?

A. Alkaline
B. Very much acidic
C. Calcareous
D. both A & C

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The horizons O, A, E and B (other than r and C) are collectively called_____________?

A. Regolith
B. Solum
C. Outer core
D. inner core

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Some times, AB/EB/BA/BE horizons in soil profile are present which are called__________?

A. Master horizons
B. Transition horizons
C. Little horizons
D. All of the above

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Accumulation of Al and Fe oxides and clays coming from the upper profile layers:

A. Zone of eluviation
B. Zone of Illuviation
C. Zone of evaluation
D. None of the above

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Author: Shafiq-ur-Rehman