Download PTU B.Sc Agriculture 2019 May 6th Semester 74345 DISEASES OF HORTICULTURAL CROPS AND THEIR MANAGEMENT Question Paper

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Roll No.

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Total No. of Questions : 09

Total No. of Pages : 02

Time: 3 Hrs.

B.Sc. (Agriculture) (2014 & Onwards) (Sem.-6)

DISEASES OF HORTICULTURAL CROPS AND THEIR MANAGEMENT

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Subject Code : BSAG-602

M.Code: 74345

Max. Marks : 60

INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.

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2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

Q1. Write the causal organism and mode of perpetuation of the following diseases :

1. Citrus gummosis/Foot rot

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2. Citrus canker
3. Black spot of rose
4. Wilt of gladiolus
5. Early blight of tomato
6. Red rust of mango

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7. Pea rust
8. Purple blotch of onion
9. Anthracnose and fruit rot of chili
10. Brown rot of peaches

SECTION-B

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Q2. Explain etiology of mango malformation and citrus greening. Why mango malformation is more severe in North-West region of the country.

Q3. Name two pathogens of grapes alongwith fungicides against which fungicide resistance has been reported. What strategy should be adopted to check the development of resistance?

Q4. Write down Integrated management practices to control foot rot of citrus and black tip of mango.

Q5. Differentiate between Panama wilt and Sigatoka disease of banana.

Q6. How you will produce disease free seed of potato in your fields?

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SECTION-C

Q7. a) Write the important symptoms, causal agent, disease cycle, favorable factors and management of apple scab.

b) What measures should be adopted in controlling viral diseases of vegetable crops?

Q8. Describe symptoms, etiology, favourable factors, survival and integrated management practices to control late blight of potato.

Q9. Write down the diseases of cucurbits, their symptoms, causal organisms and integrated management practices to control these diseases.

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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.