In my previous post I have posted MCQs on plum diseases. Hope you might have enjoyed solving it. Today I am going to post MCQs on Jackfruit diseases. I have included two disease management questions. These will help you in understanding the choice of fungicides in the management of diseases
Q 1 Die back of jackfruit is caused
by
a. Rhizopus artocarpus
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c. Phytopthora palmivora
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b. Stigminia carpophila
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d. Botryodiplodia theobromae
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Q 2 On dying back twigs following vegetative
fruiting structure can be seen
a. Pycnidia
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c. acervuli
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b. apothecia
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d. perithecia
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Q 3 Primary source of inoculum of jackfruit die back is
a. dormant mycelia
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c. soil borne conidia
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b. conidia developed in pycnidia
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d. air borne conidia
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Q 4 Following conditions are
favourable for die back development in jackfruit
a. Temp 15-20oC and RH
80-85%
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c. Temp 25-30oC and RH
80-85%
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b. Temp 25-30oC and RH
85-90%
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d. Temp 15-20oC and RH 85-90%
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Q 5 Fruit rot of jackfruit is
caused by
a. Rhizopus artocarpus
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c. both of these
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b. Phytopthora palmivora
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d. none of these
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Q 6 Leaf spot of jackfruit is
caused by
a. Alternaria alternate
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c. Pestalotiopsis clastica
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b. Pseudomonas syringae pv.syringae
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d. Phytophthora palmivora
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Q 7 Characteristic symptom of jackfruit leaf spot disease is
a. dark brick red spots on upper leaf surface
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c. dark brick red spots on both leaf surfaces
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b. dark brick red spots on lower leaf surface
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d. white spots with grey center
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Q 8 Pink disease of jackfruit is
caused by
a. Botryobasidium salmonicolaor
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c. a & b
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b. Corticium salmonicolor
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d. None of these
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Q 9 Jackfruit leaf spot can be
managed by
a. Carbendazim @0.1%
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c. Thiophanate methyl @0.2%
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b. Difolatan @0.2%
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d. All of these
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Q 10 Phytophthora rot of jackfruit is managed by
a. Bordeaux mixture @1%
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c. Carbendazim @0.1%
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b. Thiophanate methyl @0.2%
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d. Difolatan @0.2%
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