Effects of Stem Rust (Puccinia graminis f.sp. tritici) on Yield, Physical and Chemical Quality of Durum Wheat Varieties in East Shoa Zone, Ethiopia
American Journal of Agriculture and Forestry
Volume 7, Issue 2, March 2019, Pages: 78-83
Received: Jan. 2, 2019; Accepted: Feb. 7, 2019; Published: May 17, 2019
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Ashenafi Gemechu Degete, Ethiopian Institute of Agricultural Research (EIAR), Debre Zeit Agricultural Research Center, Debre Zeit, Ethiopia
Alemayehu Chala, Awassa College of Agriculture, University of Hawassa, Awassa, Ethiopia
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Stem rust or black rust caused by Puccinia graminis f.sp. tritici is one of the major biotic constraints of wheat production in Ethiopia. The disease may cause substantial quantitative and qualitative yield losses but much of the work in Ethiopia on this pathosystem focuses on quantitative yield loss and qualitative losses are often overlooked. As the result, the current research was designed with the objective of elucidating the effect of wheat stem rust on yield, physical and processing quality of durum wheat. For this purpose, a factorial field experiment involving three durum wheat varieties (Ude, Denbi and Hitosa) were selected and Tilt application was conducted at Debre Zeit Agricultural Research Centre for two cropping seasons (2016-2017). The experiment was laid out in randomized complete block design with three replications and untreated checks were included for comparison purpose. Results revealed significant variations in disease parameters and crop performance of treated plots, wheat varieties and their interactions. Stem rust severity was significantly reduced by the application of Tilt across all wheat varieties, and the highest decrease in disease level (8.9 and 15.2%) was achieved by Tilt application in 2017 and 2016 cropping seasons, respectively. Correlation analysis revealed negative relationship between stem rust and durum wheat grain yield and quality parameters, which was highly significant in most cases. However, there was highly significantly positive correlation (r=0.31** and r = 0.39***) between stem rust and grain protein content during the year of 2016 and 2017 cropping seasons, respectively. The results confirmed the economic importance of stem rust to food industry for its effect on grain yield, physical and processing quality of durum wheat in Ethiopia.
Disease Severity, Durum Wheat, Fungicide, Physical, Processing, Stem Rust
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Ashenafi Gemechu Degete, Alemayehu Chala, Effects of Stem Rust (Puccinia graminis f.sp. tritici) on Yield, Physical and Chemical Quality of Durum Wheat Varieties in East Shoa Zone, Ethiopia, American Journal of Agriculture and Forestry. Vol. 7, No. 2, 2019, pp. 78-83. doi: 10.11648/j.ajaf.20190702.15
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