Twinkle D. Manavadria1*, Prashant, B. Sandipan2, , R. K. Patel, P. S. Patel, Pushpa Ruwali, Navya Sharma and Payal J. Kodavala
1 Department of Plant Pathology, N. M. College of Agriculture, Navsari Agricultural University, (NAU), Navsari, Gujarat, India.
2Main Cotton Research Station (MCRS), Navsari Agricultural University (NAU), Surat 395 007 (Gujarat), India
Email:twinklemanavadariya25@gmail.com
Received-28.01.2025, Revised-15.02.2025, Accepted-26.02.2025
Abstract: Cotton (Gossypium hirsutum L.) is a major fiber crop that contributes significantly to global economic and social development. It is often referred to as “The White Gold” or “The King of Fibers”. Survey was conducted in the cotton growing regions of Surat, Bharuch and Narmada districts of South Gujarat in the year 2023-2024 to know the presence of the Fusarium oxysporum f. sp. vasinfectum on cotton plants and to record the observations on per cent disease incidence (PDI). The maximum disease incidence was found in Bharuch district with 9.89 PDI while, the least disease incidence was found in Surat district with 4.33 PDI. However, the maximum disease incidence was observed in Ranipura village of Amod taluka of Bharuch district with 18.00 PDI while, no disease was observed in the Amkhuta village of Mangrol taluka and MCRS farm of Choryasi taluka of Surat district. At seedling stage, drooping of leaves and cortical decay of seedlings were observed. In case of young plants, leaves turned yellow followed by wrinkling and drying, loss of turgidity with brownish discoloration of stem near soil base, roots became soft and browning of vascular bundles was observed. The vascular discoloration of stem extended throughout the plant. When the roots of such infected plants were split opened and examined, the brownish black discoloration of vascular system was observed.
Keywords: Cotton, Survey, Fusarium, Intensity, Wilt disease
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