No. of Printed Pages: 11 IBLP-004 I
CERTIFICATE IN SERICULTURE
Term-End Examination
June, 2016
BLP-004 CROP PROTECTION
Time Iwurs Maximum Marks 50

Note: Answer any five questions. All questions carry equal marks.

1. Answer in one sentence (Any ten)

Name the important leaf sucker pests of mulberry.

Name the causal agent of leaf spots disease of mulberry.

How can we identify the attack of Bihar hairy Caterpillar in mulberry

In how many days the dermestid beetle completes its life cycle on mulberry silkworm

Give the scientific name of thrips attacking mulberry.

Which is the causative agent of flacherie disease in muga silkworm

What is the causal organism of Muscardine disease in Eri silkworm

How many eggs are laid by a female of uzi fly of mulberry silkworm

What is the common name of Bavistin

What is a fungicide

What is the meaning of EC

Name one equipment used for spraying the fungicides.

2. Choose the correct answer:

The duration of egg hatching in uzi fly of mulberry silkworm is .

10-20 hours

100-200 hours

48-60 hours

None of the above

Virosis in Oak Tasar silkworm is Caused by .

Polyhedral Inclusion Bodies

Protozoa

Fungi

Bacteria

Pseudomonas syringae causes

Bacterial leaf blight in mulberry

Leaf rust in Oak

Bacterial leaf blight in Eri

Bacterial leaf blight in muga

Collar rot in mulberry during nursing is caused by a .

Fungus

Bacterium

Virus

Nematode

Collection and destruction of pest attacking mulberry leaves is .

Biological control

Chemical control

Mechanical control

All the above

Thrips feed on .

Roots

Leaves

Stem

Root and Stem

Mycosis is caused by .

Bacteria

Fungus

Viruses

All the above

White powdery patches appearing on the lower surface of leaves is a symptoms of .

Leaf rust disease

Bacterial blight disease

Fungal leaf blight disease

Powdery mildew disease

Disinfectant means .

An agent that kills plants

An agent that kills microorganisms

An agent that kills insects

An agent that kills rodents

Leaf blister of Oak tasar plants is caused by .

Fusarium solani

Alternaria alternata

Taphriua caernlescurse

Phoma sorghina

3. Answer the following questions in 5 sentences:

Mention the signal words indicated in the fungicide pack which denotes the toxicity level.

Why silkworm rearing house is disinfected

Describe bacteriosis disease in Tasar silkworms

Explain biological control of uzifly in mulberry silkworm

How to manage muscardine disease in mulberry silkworms

4. Define Leaf eaters. Identify the major leaf eating pests of mulberry, their symptoms and management.

5. Write short notes on any five in 2 sentences:

Semi looper pest of Eri silkworm

Red rust of Muga host plant

Preventive measure of dermestid beetle

Root knot disease in mulberry

Mealy bug in Mulberry

Integrated pest management

Termite

6. Fill in the blanks

Presence of knots/galls on roots system is the symptoms of disease.

The most important species of dermestid beetle infesting cocoons is .

The scientific name of the mealy bug of mulberry is .

Danger -poison label on fungicide pack indicates that the product is .

The quantity of spray solution required for 1 acre of mulberry garden is .

Pebrine disease in muga silkworm is also known as .

Clipping and destroying the pest attacked parts is control.

The scientific name of mulberry silkwarm is .

The emulsified concentrate of a fungicide indicates that it is a .

Mycosis is caused by .

7. Describe the life cycle of uzi fly. Explain the damage caused by uzi fly and its control measure.

8. Name various diseases of Eri Silkworm host plants, their causative organism, occurrence, symptoms and control measures.