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  2. Volume 7, Issue 6
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Online ISSN: 2515-8260

Volume7, Issue6

Evaluating faba bean cultivars and fungicide spray intervalsfor managing the chocolate spot (Botrytis fabaeSard.) diseaseinChelia district, West Shewa, Ethiopia

    Kumela Regasa Tiki Alemu Lencho Thangavel Selvaraj Kiran Ramaswamy

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 6, Pages 1403-1427

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Abstract

The experiment was conducted inFarmers Training Center (FTC)at Chelia district, West Shewa Zone, Ethiopiaespecially on cropping season of 2018,for evaluating four faba bean  cultivars (Walki,Hachalu, Asebeka and Local) and the efficacy of the fungicide, Trust –Cyomp 439.5 WP at the rate of 1.5 kg/ha at four various spray intervals (once in a week, after two weeks, after three weeks and unsprayed-control) based on conditions on the field for maintaining and managingfaba bean  chocolate spot disease and its impact on both yield and its relevant components. Entirely sixteen treatments are involved in factorial allignment in Randomized Complete Block Design (RCBD) with three replications. The chocolate spot disease incidence,criticality and region under disease progress curve were the highest in cultivar Local followed by Ashebeka, Hachalu and Walki in unsprayed plots. Among different spray intervals, weekly applied plots were found the most effective in disease reduction with maximum reduction in Walki and minimum in Local cultivar.The effectiveness of cultivars along with spray intervals of fungicide displayed significant variations in pods per plant, yield of the grain, and hundred seed weight; and had no significant effects on seeds per pod. The relative yield loss of 37.31,35.029.0 and 28.5% were recorded fromLocal,Ashebeka, Walki and Hachaluin unsprayed plots, respectively. Economic analysis showed that the highest net benefits were obtained from Hachalu and Walki(46400 and 44480 birr/ ha)when sprayed at every two weeks intervals and from Ashebeka and Local, the highest benefit (41760 and 36640 birr /ha) was obtained on every one week sprayed interval plots and the least was obtained from Local unsprayed plots (28160birr /ha). The Highest rate of margin based on return was achieved when it was sprayed at every two weeks intervals byAshebeka (374.3%) followed by Hachalu sprayed at every three weeks spray intervals (227%), but the lowest was obtained from local with spray of fungicide at every three weeks intervals (Birr 42%). The results of this study provide evidences that the reactive nature offaba bean cultivars to weekly and two weeks spray intervals of fungicide applications found to be effective in reducing chocolate spot severity and increased seed yield of faba bean cultivars under field conditions in Chelia district, Ethiopia.
Keywords:
    Faba bean cultivars Fungicides Spray intervals Chocolate spot disease Yield and yield loss Cost-benefits analysis
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(2020). Evaluating faba bean cultivars and fungicide spray intervalsfor managing the chocolate spot (Botrytis fabaeSard.) diseaseinChelia district, West Shewa, Ethiopia. European Journal of Molecular & Clinical Medicine, 7(6), 1403-1427.
Kumela Regasa Tiki; Alemu Lencho; Thangavel Selvaraj; Kiran Ramaswamy. "Evaluating faba bean cultivars and fungicide spray intervalsfor managing the chocolate spot (Botrytis fabaeSard.) diseaseinChelia district, West Shewa, Ethiopia". European Journal of Molecular & Clinical Medicine, 7, 6, 2020, 1403-1427.
(2020). 'Evaluating faba bean cultivars and fungicide spray intervalsfor managing the chocolate spot (Botrytis fabaeSard.) diseaseinChelia district, West Shewa, Ethiopia', European Journal of Molecular & Clinical Medicine, 7(6), pp. 1403-1427.
Evaluating faba bean cultivars and fungicide spray intervalsfor managing the chocolate spot (Botrytis fabaeSard.) diseaseinChelia district, West Shewa, Ethiopia. European Journal of Molecular & Clinical Medicine, 2020; 7(6): 1403-1427.
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