Dual Role of Triazole Fungicides in Managing Alternaria Blight and Promoting Growth in Groundnut (Arachis hypogaea L.)
2025
Jyotika Purohit | Anirudha Chattopadhyay | Dasharathlal S. Patel | Somabhai M. Chaudhari | Kantilal K. Patel
Alternaria leaf blight (ALB) is a major constraint to groundnut production, particularly in North Gujarat, where its incidence has intensified in recent years due to changing climatic conditions. Effective and sustainable disease management requires fungicides that not only suppress the pathogen but also promote plant growth. To identify such options, field experiments were conducted during 2016&ndash:2018 to evaluate the bioefficacy of nine fungicides, including five systemic, two contact, and two combination formulations. Among these, propiconazole 25 EC, tebuconazole 25 WG, and carbendazim 50 WP were the most effective in reducing disease intensity and slowing disease progression. The highest pod and haulm yields were recorded in plots treated with tebuconazole 25 WG, followed by propiconazole 25 EC and carbendazim 50 WP. However, the highest cost&ndash:benefit ratio was observed with carbendazim 50 WP, followed by propiconazole 25 EC and tebuconazole 25 WG. In addition, propiconazole 25 EC and tebuconazole 25 WG exhibited notable plant growth-promoting effects, enhancing plant height, root length, and chlorophyll content. Based on these findings, the application of propiconazole 25 EC or tebuconazole 25 WG is recommended for the effective and economical management of ALB in groundnut.
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