Evaluation of efficacy of fungicides against ginger leaf spot (Phyllosticta zingiberi) disease epidemics at Tepi Southwestern Ethiopia

The most devastating disease that affects ginger production and productivity in Southwestern Ethiopia lowers qualitative quantitative rhizome yields is leaf spot, which caused by the pathogen Phyllosticta zingiberi. In Tepi, Ethiopia, during main cropping seasons of 2020 2021, a field experiment was carried out to assess efficacy several fungicides managing epidemics spot disease. evaluated were Ridomil Gold MZ 68 WG (Metalaxyl-M), Ethiozeb 80% WP (Mancozeb), Shega 50 (Copper oxychloride), Matico (Metalaxyl 8% + Mancozeb 64% WP). While plot without spray used as control. results indicated among different tested four times WP) starting from appearance on within 15 days intervals produced lowest severity 10.2% followed foliar with (Ethiozeb 16.2% first at then 3 intervals. Similarly, highest yield 16.3 t ha-1 also obtained spraying 12.56 ha-1. Therefore @ 2.5 kg highly effective against southwestern Ethiopia. Int. J. Agril. Res. Innov. Tech. 12(2): 134-137, December 2022