DISEASE PROGRESSION AND INTEGRATED MANAGEMENT OF FINGER MILLET BLAST CAUSED BY Pyricularia grisea (Cooke) Sacc.
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Date
2024-09-20
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DEPARTMENT OF PLANT PATHOLOGY COLLEGE OF AGRICULTURE BANDA UNIVERSITY OF AGRICULTURE & TECHNOLOGY, BANDA-210001, UTTAR PRADESH (INDIA)
Abstract
The present study was carried out during Kharif- 2023 at Banda University of Agriculture and Technology, Banda. In epidemiological studies, the maximum temperature ranging 32.35 to 36.03°C, minimum temperatures ranging 26.79 to 28.43°C, along with >90% relative humidity and intermittent rains were the most important weather factors favouring development of blast disease in finger millet. Minimum temperature, maximum relative humidity and minimum relative humidity was highly significant and negative correlated with PDI of finger millet variety KMR-301. The coefficient of determination (R2) values depicted 72, 70, 76, 74 and 81 per cent disease development in varieties KMR-301, RAU-03, RAU- 08, ATL-01, and GPU-67 was influenced by the weather variables viz. maximum temperature, minimum temperature, maximum relative humidity, minimum relative humidity and rainfall. Maximum and minimum AUDPC of 2180.71 and 601.93 was obtained in varieties KMR-301 and GPU-67, respectively. Maximum apparent infection rate of 0.18 in variety KMR-301 and ALT-01 was observed at 8 week after sowing (WAS), whereas, in varieties RAU-03 (0.09), RAU-08 (0.12) and GPU-67 (0.17) it was observed at 9 WAS. Under in vitro condition, Propiconazole+Tricyclazole was found most effective and significantly superior among all the treatments with 87.12 per cent average mycelial growth inhibition. Among botanicals, Neem seed extract was found most effective and significantly superior among all the treatments with 68.14 per cent average inhibition. Seed treatment with Carboxin+Thiram alongwith two foliar sprays of Propiconazole+Tricyclazole was found most effective with maximum disease reduction (93.03%) and yield of 30.07 q/ha hence, this treatment combination may be recommended for the effective management of blast disease in finger millet.
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SINGH ROMA. (2024) DISEASE PROGRESSION AND INTEGRATED MANAGEMENT OF FINGER MILLET BLAST CAUSED BY Pyricularia grisea (Cooke) Sacc. [Thesis, M.Sc; DEPARTMENT OF PLANT PATHOLOGY COLLEGE OF AGRICULTURE BANDA UNIVERSITY OF AGRICULTURE & TECHNOLOGY, BANDA-210001, UTTAR PRADESH (INDIA)]