agriculture MCQs – Page 129

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

2561. The diagnostic techniques used in evaluating soil nutrient status and determining fertilizer requirements of the crop include:
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A. Nutrient deficiency symptoms & field experimentation

B. All of the above

C. Greenhouse pot experimentation & soil testing

D. Plant analysis

2562. Which of the following crops is most tolerant to salty soils?
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A. Corn

B. Carrot

C. Rice

D. Cotton
2563. The unique soil environment under the influence of plants roots is called rhizosphere and this term was given by__________?
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A. Aristotle et al.

B. Hiltner

C. Helium. S. Denial

D. A.Q khan

2564. In tomato, Boron deficiency leads to:__________?
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A. Silvering

B. Piffiness

C. All of the above

D. Cracking
2565. Organic matter influences:_________?
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A. Cation exchange capacity

B. All of the above

C. Water holding capacity

D. Aggregate stability

2566. Which is/are dominating salt/s in alkali soil:
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A. NaHCO<sub>3</sub>

B. Na<sub>2</sub>CO<sub>3</sub>

C. MgSO<sub>4</sub>

D. th a & b
2567. _________refers to the increase in density of a soil as a result of applied load or pressure?
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A. Compaction

B. Pudding

C. Plough soles

D. Traffic soles

2568. The indicator used for the the estimation of the organic matter or organic carbon is;_________?
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A. Mixed indicator

B. Diphenylamine indicator

C. Both a and b

D. None of the above

2569. The term rhizosphere was coined by:___________?
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A. Winogrdsky

B. Baussingault

C. Liebig

D. Hiltner
2570. Most common rocks, after exposed to weathering which cover about ______% 0f the earth:
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A. Sedimentary rocks

B. Igneous rocks

C. metamorphic rocks

D. Shales

2571. International Union of Forest Research Organization (IUFRO) is located:
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A. Pakistan

B. Germany

C. Austria

D. Both a & b

2572. Soils that have more than 20% organic matter are termed as:__________?
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A. Muck soils

B. All of these

C. Peat soils

D. Organic soils

2573. According to one estimate, wind and water erosion over ______ % of the Pakistans total area?
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A. 76%

B. None of the above

C. 36%

D. 46%

2574. What kind of nitrogenous (N) fertilizers should not be used for flooded soil:
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A. Ammonical

B. Nitrate

C. Ammonical-nitrate

D. Both B & C
2575. In Pakistan, The following igneous rocks are found over considerable areas:
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A. Dolomite shale, gneiss

B. None of the above

C. Slate, Shist

D. Marl, gypsum

2576. Which of the following is not a metamorphic rock?
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A. Marble

B. Granite

C. Sand stone

D. both A & B
2577. A mineral horizon that is either too thin, too light in colour, too low in organic matter:
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A. Ochric epipedon

B. Melanic epipedon

C. Umbric epipedon

D. Mollic epipedon

2578. Select the water soluble phosphatic fertilizer from the following__________?
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A. TSP

B. All of these

C. DSP

D. SSP

2579. Sustainable technologies to improve soil fertility and physical condition:
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A. Balance use of NPK fertilizers according to the need of crops.

B. Following proper crop rotation (shallow rooted and deep root crops) in the cropping session.

C. All of the above

D. Regular use of FYM, Composts, acidic mulches, Green manures and Organic fertilizers to increase OM content of Soil.

2580. The removal of excess water from the ground surface is called:________?
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A. Drainage

B. Surface operations

C. All of the above

D. Sub-surface drainage