التفاصيل البيبلوغرافية
| العنوان: |
Biophysical factors and agronomic practices associated with Fusarium ear rot and fumonisin contamination of maize in multiple agroecosystems in Ethiopia |
| المؤلفون: |
Deressa, Temesgen, Adugna, Girma, Suresh, L. M., Bekeko, Zelalem, Opoku, Joseph, Vaughan, Martha, Proctor, Robert H., Busman, Mark, Burgueño, Juan, Prasanna, B. M. |
| المصدر: |
Crop Science ; volume 64, issue 2, page 827-845 ; ISSN 0011-183X 1435-0653 |
| بيانات النشر: |
Wiley |
| سنة النشر: |
2024 |
| المجموعة: |
Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: |
In Ethiopia, Fusarium ear rot (FER) reduces yield, quality, and safety of maize and negatively impacts the economics of maize growers. However, there is almost no published information on geographic distribution, severity, or causal agents of FER in Ethiopia or levels of preharvest fumonisin contamination, biophysical factors, and agronomic practices associated with FER. Therefore, we surveyed 480 agricultural fields located in 10 Ethiopian zones to assess the incidence and severity of FER as well as agricultural practices and biophysical factors associated with each field. We also determined the concentration of fumonisin in samples taken from the fields. Results revealed that FER was prevalent with varied disease intensity and yield loss levels among the assessed zones. The highest percent severity index (PSI) was recorded in Mirab Wellega (33.2%), with a correspondingly maximum estimated mean grain yield loss of 13.6%, while the minimum disease severity 11.3% and yield loss 5.4% were recorded from the Ilubabor zone. Fumonisins (FB1, FB2, FB3, and FB4) were detected in 98% of the samples, and the levels ranged from 5 to 7517 μg kg −1 (mean, 540 μg kg −1 and median 82.4 μg kg −1 ). The mean fumonisin contamination of 1524.4, 1316.8, 744.5, and 742.6 μg kg −1 was recorded for Mirab Welega, Misraq Wellega, Assosa, and Hawassa zones, respectively. In total, about 11.3% of the maize samples exceeded the maximum tolerable total fumonisin limit set by the European Union in maize flour (>1000 μg kg −1 ) and are not suitable for human consumption. Disease severity highly significantly ( p < 0.0001) correlated with biophysical factors such as insect infestation ( r = 0.60, p < 0.0001) and weed infestation ( r = 0.64, p < 0.0001) and agronomic practices such as nitrogen phosphorus sulfur fertilizer application rate ( r = −0.39, p < 0.0001) and insecticide spray frequency ( r = −0.55, p < 0.0001). Other agronomic practices such as earlier or later sowing date and inter‐cropping systems ... |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1002/csc2.21159 |
| الاتاحة: |
http://dx.doi.org/10.1002/csc2.21159 |
| Rights: |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
| رقم الانضمام: |
edsbas.AB9859B2 |
| قاعدة البيانات: |
BASE |