Consider the following four measures that could be taken to successfully grow chickpeas in an area where bacterial blight disease is common. (1) Spray with Bordeaux mixture (2) Control of the insect vector of the disease pathogen (3) Use of only diseasefree seeds (4) Use of varieties resistant to the disease Which two of the above measures can control the disease?
Correct answer: B. 1 and 4
- A. 3 and 4
- B. 1 and 4
- C. 2 and 3
- D. 1 and 2
Explanation
Bacterial blight of chickpea is caused by bacterium Xanthomonas campestris. The stems and the leaves of the infected plant give a blighted or burnt up appearance. Control measures include rogueing, 3- year crop rotation, disease free seeds, spray of copper fungicides (Bordeaux mixture) and antibiotics besides sowing disease-resistant varieties.
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