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Journal of Plant Pathology & Microbiology

Abstract

Determination of Fungicide Spray Schedules for the Management of Barely Scald Disease

Yitagesu Tadesse*, Dereje Amare and Asela Kesho

Scald is an economically important foliar disease in the major barley-growing areas of Ethiopia. The current research was conducted to determine the impact of barley varieties and tilt fungicide spray schedule on disease development and barley yield. The effect of barley varieties and fungicides spray schedule on Scald development and barley yield was evaluated at Holetta in a factorial field experiment involving three barley varieties and four fungicide spray schedule. Variety Savini had the highest AUDPC (4762) value followed by Ibon (1888) and HB-42 (1402) varieties. Scald severity were significantly reduced by the application fungicide across varieties. Barley grain yield were the lowest from unsprayed plots regardless of variety. Tilt fungicide spray produced the highest yield (3.77t/ ha). The highest (7131%) and lowest (0%) marginal rate of return were obtained from Ibon variety 14th day interval fungicide spray and from all unsprayed fields, respectively. The present findings confirmed the importance of Scald in Ethiopia and the role fungicides spray schedule play in managing the disease on partially resistant varieties. Therefore in future, giving more attention to develop different Scald management strategies including breeding and screening for Scald resistance varieties and variety-fungicide combinations is important.

Published Date: 2021-12-30; Received Date: 2021-10-01