Climate change: Preparing for changes in occurrence and distribution of legumes disease

Ghosh, R and Sharma, M (2019) Climate change: Preparing for changes in occurrence and distribution of legumes disease. In: National Symposium on - Recent Challenges and Opportunities in Sustainable Plant Health Management, 26-28 February, 2019, Banaras Hindu University, Varanasi, Uttar Pradesh, India.

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Climate change will change patterns of disease distribution through changes in host distribution and phenology, changes in plant-associated microflora and direct biological effects on rapidly evolving pathogens. We initiated investigations to study changing scenario of diseases in two largest cultivated pulses - chickpea and pigeonpea in India as affected by climate change. These pulses are largely grown in rain-fed environments that are most vulnerable to climate change. Changes in the disease spectrum in chickpea and pigeonpea for the past one decade were monitored through extensive surveys and analysis of disease and weather and its comparison with the historical data indicated shift in the occurrence and distribution of diseases as well as emergence of new diseases in these two pulses. In chickpea, Rhizoctonia blight (dry root rot) is becoming more intense in typically tropicalhumid areas, while viruses and rusts dominate in warm but dry zones. Extension in the range of Ascochyta blight and Botrytis gray mold in chickpea has been recorded due to the extended winters. In pigeonpea, increased incidence of Phytophthora blight (Phytophthora cajani), Alternaria blight and Macrophomina is observed.

Item Type: Conference or Workshop Item (Paper)
Divisions: Research Program : Asia
Uncontrolled Keywords: Plant Disease, Climate Change
Subjects: Mandate crops > Chickpea
Mandate crops > Pigeonpea
Others > Climate Change
Others > Plant Disease
Depositing User: Mr Arun S
Date Deposited: 10 Apr 2020 05:39
Last Modified: 10 Apr 2020 05:41
Acknowledgement: UNSPECIFIED
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