Fruit Tree Problems: Multiple Choice Questions on Pineapple diseases

Yesterday I posted questions on Jack Fruit diseases. Today I am posting questions on  pineapple diseases. These will help you to understand the crop better. You may answer these questions in comment box.

Q 1 Heart rot of pineapple caused by

a. Phytophthora cinnamomi	c. Phytopthora palmivora
b. Phytophthora cactorum	d. Phytophthora nicotianae

Q 2 Epidemiological conditions that favours heart rot diseases development are

a. Poor drainage	c. Alkaline soils
b. Cool and wet soils	d. All of these

Q 3 Heart rot of pineapple overwinters in the form of

a. Oospores	c. Sporangia
b. Zoospores	d. None of these

Q 4 Heart rot of pineapple can be managed by

a. Avoiding deep planting	c. Removal and destruction of diseased plant
b. Application of Bordeaux mixture	d. All of these

Q 5 Base rot is caused by

a. Ceratocystis fibriata	c. Cyratocystis platani
b. Cyratocystis paradoxa	d. Cyratocystis piceae

Q 6 Pineapple wilt virus is transmitted by

a. Aphids (Aphis gossypii)	c. Mealy bug (Dysmicocus brevipes)
b. Mite (Eriophyes inaequalis)	d. Seed corn maggot (Hylemyia cilicrura)

Q 7 Select the true statement with relation to pineapple wilt virus

a. High soil N reduces disease incidence	c. Hot water treatment can be done at 52oC
b. Hot water treatment can be done at 45oC	d. Low soil N reduces the disease incidence

Q 8 Pink disease of pineapple is caused by

a. Pantoea citrea	c. Botryobasidium salmonicolaor
b. Corticium salmonicolor	d. None of these

Q 9 Pineapple fruitlet core rot disease is caused by

a. Penicillium spp	c. Aspergillus spp.
b. Rhyzopus spp.	d. All of these

Q 10 Pantoea citrea is a

a. Gram-negative	c. facultative anaerobic
b. non-spore forming	d. All of these

Tomorrow I shall be posting the answers in comment box