Agriculture - Mock Test 58

Question 571

Phosphorus fixation refers to the phenomenon of?

A) Absorption of P2O5 by plant B) Leaching of P2O5 from soil by percolating waters C) Conversion of soluble phosphorus into plant unavailable forms D) Anion exchange with colloidal constituents of soilc

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Question 572

Phosphorous occurs in soil in?

A) Inorganic form only B) Organic form only C) Both 1⃣ & 2⃣ D) None of these

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Question 573

Phosphates enzyme play a major role in ______ of organic phosphates in soil?

A) Adsorption B) Mineralization C) Immobilization D) None of these

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Question 574

pH value of 7.0 denotes that the soil reaction is?

A) Acidic B) Alkaline C) Neutral D) High alkaline

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Question 575

Percentage of soil solids in soil is?

A) 30% B) 40% C) 50% D) 60%

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Question 576

Percent of total N present in soil is in the form of organic N?

A) 95.99 B) 40.8 C) 100 D) 20

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Question 577

Percent nitrogen is equal to?

A) Percent organic matter x 5 B) Percent organic matter x 0.05 C) Percent of organic matter x 0.06 D) None of the above

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Question 578

Pedology is the study of?

A) Rocks B) Soils C) Nutrient management D) Crop production

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Question 579

Peat soils have _____ organic matter ?

A) 5 - 8% B) 10-40% C) 50-55% D) 60-65%

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Question 580

Peat soils are ______ in nature?

A) 5 - 8% B) 10-40% C) 50-55% D) 60-65%

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