Bacterial leaf spots diseases is caused by
a) Pseudomonad spp
b) Ralstonia solanacearum
c) Erwinia carotovora
d) Agrobacterium tumefaciens
In which of the following plants, bacterial leaf disease occurs due to pseudomonad spp?
a) cucurbits beans
b) corn
c) cotton
d) both a and b
Explanation: the infected plant parts are leaves, stem, fruits and seeds
Which of the following is/are the favorable condition/s for the development of leaf spot disease?
a) warm temperature
b) frequent rains and use of diseased seeds
c) high humidity and overcrowding
d) all of these
The casual organism of bacterial wilt disease is………
a) Pseudomonad spp
b) Ralstonia solanacearum
c) Erwinia carotovora
d) Agrobacterium tumefaciens
Which of the following plant/s is/are the host of bacterial wilt disease?
a) potato, tobacco and bringal
b) cotton
c) sweet potato and tomato
d) all of these
Which of the following is/are the favorable condition/s for the development of bacterial wilt disease in plants?
a) warm temperature and high moisture
b) high soil pH and poor infertile soil
c) leaving the infected crop residues in the field
d) all of these
