Survey and Surveillance of Major Greengram (Vigna radiata L.) Growing areas around Udaipur Region to Observe occurrence and Severity of Alternaria Leaf Spot

Author: Neeraj Kumar Meena*, Amit Trivedi , Mahendra Kumar Meena, Suresh Chand Meena and Suresh Kumar

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Abstract

Surveys were conducted to study the occurrence and severity of Alternaria leaf spot diseases in major greengram growing areas around Udaipur district of Rajasthan during Kharif 2017 and 2018. The roving survey of the farmer’s field was carried out to study for symptomatology, severity, distribution, and spread of both the diseases at the flowering and pod formation stage of the crop. Among the different areas surveyed, the highest mean disease severity of 48.23 per cent was observed at Sisarma, where the PDI at the flowering stage was recorded to be 41.65 per cent which increased up to 54.82 per cent at the pod formation stage and the lowest mean PDI of 25.72 was observed in Jhallara village here the PDI at flowering and pod formation stage was 21.93 and 29.50 per cent during kharif 2017. In the subsequent year kharif 2018, the intensity of Alternaria leaf spot disease was lower at RCA experimental field, the mean PDI was recorded maximum of 44.85 per cent and the least mean PDI of 2

Keywords

Alternaria, greengram, Severity, Survey.

Conclusion

The research findings on variability are helpful to know the new biotype in pathogen population that will be useful in screening of breeding lines/ varieties for disease resistance. As such correct and accurate identification will lead to more effective disease control and management, e.g., selecting appropriate organic fungicides or long lasting resistant cultivars.

References

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How to cite this article

Neeraj Kumar Meena, Amit Trivedi, Mahendra Kumar Meena, Suresh Chand Meena and Suresh Kumar (2022). Survey and Surveillance of Major Greengram(Vigna radiata L.) Growing Areas Around Udaipur Region to Observe Occurrence and Severity of Alternaria Leaf Spot