| dc.contributor.author | Debela, M. |
| dc.contributor.author | Dejene, M. |
| dc.contributor.author | Mengesha, A. |
| dc.date.accessioned | 2019-12-04T11:08:50Z |
| dc.date.available | 2019-12-04T11:08:50Z |
| dc.date.issued | 2017-01 |
| dc.identifier.citation | Debela, M., Dejene, M. & Mengesha, W. (2017). Management of Turcicum leaf blight [Exserohilum turcicum (Pass.) Leonard Suggs] of maize (Zea mays L.) through integration of host resistance and fungicide at Bako, western Ethiopia. African Journal of Plant Science, 11(1), 6-22. |
| dc.identifier.issn | 1996-0824 |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/1922 |
| dc.description | Open Access Journal |
| dc.description.abstract | Turcicum leaf blight (TLB) (Exserohilum turcicum) is a major disease affecting maize production in western Ethiopia. The objectives of this study were to determine the effect of maize varieties integrated with fungicides on epidemics of turcicum leaf blight; to determine the effect of turcicum leaf blight severity on yield and yield components of maize; and to assess the cost and benefit of using fungicides. The field experiment was conducted at Bako Agricultural Research Center in 2014 main cropping season using six maize varieties (BH-540, BH-543, BH-546, BH-660, BH-661 and AMHQ-760) integrated with foliar sprays of the systemic fungicide propiconazole (Tilt) at the rate of 350 ml ha-1 and the contact fungicide mancozeb (Dithane M-45) at 2.6 kg ha-1. The experiment was arranged in 3 × 6 factorial combinations in split plot design with three replications. A pinch of ground maize leaf infected by E. turcicum was inoculated at third-fifth leaves. Unsprayed plots were left as control or check for each variety. Disease severity was scored using 1 to 5 scale on 12 randomly-tagged plants in the central rows. Integration effects of varieties with fungicides significantly affected the grain yield and thousand kernel weight (TKW) of maize varieties. The highest (11383 kg ha-1) grain yield was obtained from propiconazole-treated hybrid maize variety BH-546. Turcicum leaf blight resulted in grain yield losses of up to 40.7% on the unsprayed plots of the susceptible variety BH-543. Percent severity index, AUDPC, incidence and disease progress rates were negatively correlated with yield components regardless of grain yield loss. The highest marginal benefit (ETB 48,801.28 ha-1) and marginal rate of return (ETB 6.33) were obtained from propiconazole-treated varieties BH-543 and BH-546, respectively. This study contributes to integrated TLB management options, and to make a valid recommendation for TLB management strategy, the study should be repeated over years and locations where TLB of maize is of major economic importance. |
| dc.format.extent | 6-22 |
| dc.language.iso | en |
| dc.subject | Exserohihum Turcicum |
| dc.subject | Fungicides |
| dc.subject | Maize |
| dc.subject | Yield |
| dc.subject | Percent Severity Indices |
| dc.subject | Maize-Varieties |
| dc.subject | Yield |
| dc.subject | Turcicum Leaf Blight |
| dc.subject | Western Ethiopia |
| dc.title | Management of Turcicum leaf blight [Exserohilum turcicum (Pass.) Leonard & Suggs] of maize (Zea mays L.) through integration of host resistance and fungicide at Bako, western Ethiopia |
| dc.type | Journal Article |
| dc.description.version | Peer Review |
| cg.contributor.crp | Maize |
| cg.contributor.affiliation | Haramaya University |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.coverage.region | Africa |
| cg.coverage.region | East Africa |
| cg.coverage.country | Ethiopia |
| cg.identifier.url | http://www.academicjournals.org/AJPS |
| cg.authorship.types | CGIAR and developing country institute |
| cg.iitasubject | Disease Control |
| cg.iitasubject | Maize |
| cg.iitasubject | Plant Diseases |
| cg.journal | African Journal of Plant Science |
| cg.howpublished | Formally Published |
| cg.accessibilitystatus | Open Access |
| local.dspaceid | 85053 |
| cg.targetaudience | Scientists |
| cg.identifier.doi | https://dx.doi.org/10.5897/AJPS2016.1449 |
