Agriculture - Mock Test 32

Question 311

Which of the following are the slow release fertilizers?

A) Surface coated urea B) Neem cake and super grain urea C) N-serve D) All of the above

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Question 312

Which of the biochemically weathered constitutes soil?

A) Upper B) Middle protion C) Lower portion D) Portion adjacent to bedrock

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Question 313

Which nutrient is maximum given for raising the field crops?

A) Nitrogen B) Potash C) Phosphorus D) Calcium

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Question 314

Which nitrogenous fertilizer will you recommend for paddy crop?

A) Nitrate fertilizer B) Amide fertilizer C) Ammonical nitrate fertilizer D) All the above

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Question 315

When organic matter with wide C:N (70:1) is added to the soil, the net effect is the disappearance of mineral nitrogen due to?

A) Mineralization B) Immobilization C) N2 transformation D) N2 reduction

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Question 316

When emerging leaves of maize show yellow to white bleached bands in lower parts, it whows the defidency of?

A) Zinc B) Iron C) Copper D) Boron

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Question 317

When a plant is under soil moisture stress, the roots?

A) Shrink in size B) Expand in size C) Remain unaffected D) Both a and b

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Question 318

When a nutrient takes active part in growth and development of plant called?

A) Beneficial B) Essential C) Required D) None of above

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Question 319

What is the P2O5 content of various rock phosphates?

A) 20 - 35% B) 35% C) 11 - 20% D) 18 - 20%

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Question 320

What is the effect of application of P2O5 fertilizer to a green manure leguminous crop on the availabiliity of phosphorus to the succeeding crop?

A) Greater amount of phosphorus is taken up and converted into organic form, which is released on decomposition of green matter B) Green manure increases the availability in organic form to the next crop C) It does not affect the availability of phosphorous to succeeding crop D) It fixes the P2O5 through humus and reduces the availability

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