Status and Distribution of Leaf Spot of Blackgram Incited by Alternaria alternata in Krishna and Guntur Districts of Andhra Pradesh

Author: Prathyusha D., Adinarayana M., Manoj Kumar V. and Ambarish K.V.

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Abstract

Blackgram is an important pulse crop of Fabaceae grown mainly in India as a source of protein. However, yields can be negatively impacted by numerous factors, including disease, particularly those caused by fungi which create problems in both production and storage. Foliar diseases of blackgram such as Alternaria leaf spot caused by the Alternaria alternata (Fr.) Keissl. is becoming a major problem in blackgram fields of Andhra Pradesh and causes substantial yield losses, with reductions in plant health and seed quality. A minor disease so far, but becoming a major disease in recent times, there is every need to study about the disease. Information regarding work done reports on this disease was found to be scarce across India and abroad. Hence, a systematic and robust survey was conducted during kharif 2018 in Krishna and Guntur districts and also during rabi 2018-19 in Guntur district of Andhra Pradesh at 30-35, 40-45, 50-55 and 60-70 DAS and revealed that the disease incidence kept

Keywords

Blackgram, Alternaria alternata, Survey and Disease severity.

Conclusion

This is the first ever research on status and distribution of Alternaria leaf spot of blackgram in major blackgram growing regions in Krishna and Guntur district, Andhra Pradesh. This research documented that leaf spot disease is widespread and uniform in blackgram fields during kharif as well as rabi seasons. It indicated that environmental conditions prevailing during kharif and rabi season were congenial for pathogen to cause disease. The information generated through this study could help the blackgram growers regarding disease management and selection of resistant cultivars, improving profitability and achieving food security. Furthermore, an exhaustive survey across all blackgram growing zones in Andhra Pradesh is required to identify the hot spot for the disease, as well as characterization of the pathogen population prevailing in blackgram growing is required to design regional specific management strategies. The easiest way of managing the disease is through direct deployment

References

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How to cite this article

Prathyusha, D., Adinarayana, M., Manoj Kumar V. and Ambarish, K.V. (2021). Status and Distribution of Leaf Spot of Blackgram Incited by Alternaria alternata in Krishna and Guntur Districts of Andhra Pradesh. Biological Forum – An International Journal,