Agriculture - Mock Test 29

Question 281

Amongst the following insects which one is monophagous?

A) Spodoptera litura B) Spilosoma oblicua C) Bombyx mori D) Bemicia tabaci

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Question 282

Ammonium carbamate is mixed with alumnium phosphide because?

A) It releases ammonia gas alarming the operator B) It releases CO2 which is fire extinguisher C) It gives cooling effect D) All of the above

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Question 283

Alternaria blight in mustard can be controlled by?

A) Treating seed with hot water B) Soil treatment with alderin C) Bordeaux mixture D) None of these

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Question 284

A typical 'Hopper burn' in rice is caused by feeding of?

A) Aphids B) Gundhi bug C) Brown plant hopper D) Mites

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Question 285

A notorious weed, Lantana camara is controlled by?

A) Lantana bug B) Shoot fly C) Cochnial insect D) None of them

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Question 286

A minimum period of _______ years is to be given before assessing the effectiveness of an important bio-control agent?

A) 2 B) 3 C) 4 D) 5

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Question 287

A better of pect management depends upon?

A) The use of resistant variety B) Interlacing the known control methods C) Proper agronomic practices D) Use of pesticides

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Question 288

11-Hexudecenal is sex pheromone of?

A) Heliothis armigera B) Spodoptera litura C) Trichoplusia nigra D) None of the above

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Question 289

Which of the following is perennial weed?

A) Goat weed B) Pig weed C) Black Jack D) Field bindweed

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Question 290

Which of the following soil is of ashy grey in colour?

A) Brown earth B) Chernozems C) Tundra soil D) Podsols

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