5
Question
Consider the following four measures (a-d) that could be taken to successfully grow chickpea in an area where bacterial blight disease is common.
a) Spray with Bordeaux mixture
b) Control of the insect vector of the disease pathogen
c) Use of only disease-free seeds
d) Use of varieties resistant to the disease
Which two of the above measures can control the disease?
Consider the following four measures (a-d) that could be taken to successfully grow chickpea in an area where bacterial blight disease is common.
a) Spray with Bordeaux mixture
b) Control of the insect vector of the disease pathogen
c) Use of only disease-free seeds
d) Use of varieties resistant to the disease
Which two of the above measures can control the disease?a) Spray with Bordeaux mixture
b) Control of the insect vector of the disease pathogen
c) Use of only disease-free seeds
d) Use of varieties resistant to the disease
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Solution
The correct option is C c and d
Bacterial blight is a serious disease of field peas that is caused by the pathogens Pseudomonas syringae pv. pisi and Pseudomonas syringae pv. syringae. It can be controlled by crop rotation, time of sowing, farm hygiene, sowing disease free seed and using resistant varieties.The disease is characterized by small, pale green spots or streaks which soon appear water-soaked. The lesions expand and then appear as dry dead spots. In severe infections, a milky gray exudate may be squeezed from the cut end of leaf exhibiting symptoms.
It can be prevented by use of only disease-free seeds and use of varieties resistant to the disease.
Bacterial blight is a serious disease of field peas that is caused by the pathogens Pseudomonas syringae pv. pisi and Pseudomonas syringae pv. syringae.
It can be controlled by crop rotation, time of sowing, farm hygiene, sowing disease free seed and using resistant varieties.The disease is characterized by small, pale green spots or streaks which soon appear water-soaked. The lesions expand and then appear as dry dead spots. In severe infections, a milky gray exudate may be squeezed from the cut end of leaf exhibiting symptoms.
It can be prevented by use of only disease-free seeds and use of varieties resistant to the disease.
It can be prevented by use of only disease-free seeds and use of varieties resistant to the disease.
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