Minimizing yield loss of wheat (Triticum aestivum L.) by controlling leaf rust (Puccinia triticina L.) with an appropriate combination of fungicides
2023
Mustarin, K.E. | Rahman, M.M.E. | Roy, K.K. | Reza, M.M.A. | Ali, M.S. | Ali, M.E. | Gaber , A. | Hossain, A.
Background and Objective: Wheat is the most significant grain crop in the world and in Bangladesh, and leaf rust is a major disease of this crop. Every year it occurs in almost all wheat-growing areas. So it needs to know the chemical fungicide for managing this disease.Methodology: An experiment with seven fungicides, namely Tilt 250 EC (propiconazole), Folicur 250 EC (tebuconazole), Nativo 75 WG (a combination of tebuconazole with trifloxystrobin), Positive 300 SE (a combination of propiconazole with difenoconazole), Awal 72 WP (a combination of hexaconazole with zineb), Rovral 50 WP (iprodione) and Goldman 80 WP (mancozeb) was conducted following randomized complete block design with three replications for three consecutive years.Main Results: The experiment gave similar results in three years (2017–2018, 2018–2019, and 2019–2020) on different agronomic and disease parameters. The lowest (2%) diseased leaf area and area under the diseased progressed curve (AUDPC) were obtained when treating the plot with fungicides Tilt 250 EC, Folicur 250 EC, Nativo 75 WG, Positive 300 SE, and Awal 72 WP with the highest 97–98% of disease control. The mean of a thousand-grains weight and grain yield were obtained highest from the treated plot with Folicur 250 EC followed by Tilt 250 EC, Positive 300 SE, and Nativo 75 WG.Conclusions: Spraying with fungicides Tilt 250 EC, Folicur 250 EC, Nativo 75 WG, Positive 300 SE, and Awal 72 WP provides the best results to manage leaf rust disease to a great extent.
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