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2020•Fundamental and applied agricultureOpen access

Sensitivities of Alternaria brassicicola causing Alternaria blight and yield contributing parameters of mustard to fungicides

Md Atikur Rahman, Fatema Tuz Zohura, Islam Hamim, Md. Bahadur Meah, Mohammad Ali Hossain

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Abstract

Alternaria leaf blight (also called black leaf spot) caused by Alternaria brassicicola is an important disease of mustard in Bangladesh. Twelve commercial fungicides were assessed against Alternaria brassicicola Bangladeshi isolate PMIL-5 in poison food technique. Among these fungicides, three fungicides viz. Contaf 5EC (Hexaconazol 50%), Rovral 50 WP (Iprodione 50%) and Autostin 50WP (Carbendazim 50%) inhibited the total mycelial growth of A. brassicicola isolates PMIL-5 at the lowest concentration 0.0125% in in vitro condition.Contaf 5EC@ 0.1% concentration showed better results in minimizing disease occurrence and frequency of Alternaria leaf blight disease as well as a significant positive impact on the yield parameters of mustard variety BARI Sharisha 14 in the field. [Fundam Appl Agric 2020; 5(3.000): 435-442]

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Alternaria leaf blight (also called black leaf spot) caused by Alternaria brassicicola is an important disease of mustard in Bangladesh. Twelve commercial fungicides were assessed against Alternaria brassicicola Bangladeshi isolate PMIL-5 in poison food technique. Among these fungicides, three fungicides viz. Contaf 5EC (Hexaconazol 50%), Rovral 50 WP (Iprodione 50%) and Autostin 50WP (Carbendazim 50%) inhibited the total mycelial growth of A. brassicicola isolates PMIL-5 at the lowest concentration 0.0125% in in vitro condition.Contaf 5EC@ 0.1% concentration showed better results in minimizing disease occurrence and frequency of Alternaria leaf blight disease as well as a significant positive impact on the yield parameters of mustard variety BARI Sharisha 14 in the field. [Fundam Appl Agric 2020; 5(3.000): 435-442]

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Available abstract

Alternaria leaf blight (also called black leaf spot) caused by Alternaria brassicicola is an important disease of mustard in Bangladesh. Twelve commercial fungicides were assessed against Alternaria brassicicola Bangladeshi isolate PMIL-5 in poison food technique. Among these fungicides, three fungicides viz. Contaf 5EC (Hexaconazol 50%), Rovral 50 WP (Iprodione 50%) and Autostin 50WP (Carbendazim 50%) inhibited the total mycelial growth of A. brassicicola isolates PMIL-5 at the lowest concentration 0.0125% in in vitro condition.Contaf 5EC@ 0.1% concentration showed better results in minimizing disease occurrence and frequency of Alternaria leaf blight disease as well as a significant positive impact on the yield parameters of mustard variety BARI Sharisha 14 in the field. [Fundam Appl Agric 2020; 5(3.000): 435-442]

Key concepts: Alternaria brassicicola, Alternaria, Blight, Fungicide, Yield (engineering), Biology, Horticulture, Alternaria brassicae

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