Sunday, April 12, 2020

Fruit Tree Problems: Multiple choice questions on Pomegranate Diseases

Last week I posted questions on Pineapple diseases. Today I am posting questions on  pomegranate diseases. These will help you to understand the crop better. You may answer these questions in comment box.

Q 1 Bacterial blight of pomegranate is caused by
a. Xanthomonas campestris pv punicae
c. Xanthomonas axonopodis pv punicae
b. Pseudomonas axonopodis pv punicae
d. Pseudomonas campestris pv punicae
Q 2 Light brown zonated spots appear on leaves and fruits of pomegranate are caused by
a. Cercospora punicae
c. Coelophoma empetri
b. Alternaria altarnata
d. Phytophthora nicotianae
Q 3 Primary source of inoculum for Cercospora leaf spot are
a. conidia in acervulus
c. dormant mycelia in infected plant part
b. dormant mycelia in plant debris
d. None of these
Q 4 Wilt of pomegranate is caused by
a. Fusarium oxysporum
c. Fusarium fusariodes
b. Verticilium albo-atrum
d. All of these
Q 5 Flower and fruit spot of pomegranate is caused by
a. Phytophthora palmivora
c. Phytophthora parasitica
b. Phytophthora nicotianae
d. Phytophthora cactorum
Q 6 Favourable temperature for bacterial blight development in pomegranate is
a. 30-34oC
c. 25-30oC
b. 20-30oC
d. 30-40oC
Q 7 Bacterial blight of pomegranate can develop faster under
a. 85-90% RH
c. 80-85% RH
b. 60-75% RH
d. 70-85% RH
Q 8 Most critical period in pomegranate disease development is
a. July-August
c. July-September
b. August-October
d. August-November
Q 9 Characteristic symptoms for bacterial blight of pomegranate includes
a. water soaked lesion with necrotic center
c. Oily brown to black spots on fruits
b. brown to black spots around the nodes
d. All of these
Q 10 Dark brown depressed symptoms on fruits are characteristic of
a. Cercospora leaf spot
c. Leaf spot
b. Fusarium wilt
d. Leaf and fruit spots

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