Mohammed, A and Chala, A and Ojiewo, C O and Dejene, M and Fininsa, C and Ayalew, A and Hoisington, D A and Sobolev, V S and Arias, R S (2018) Integrated management of Aspergillus species and aflatoxin production in groundnut (Arachis hypogaea L.) through application of farm yard manure and seed treatments with fungicides and Trichoderma species. African Journal of Plant Science, 12 (9). pp. 196-207. ISSN 1996-0824
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Abstract
Groundnut (Arachis hypogaea L.) is an important cash crop in the lowland areas of Ethiopia. However, prevalence of Aspergillus invasions and subsequent aflatoxin contamination compromises the quality of groundnut kernels. This study was conducted to evaluate the effect of farm yard manure (FYM) and seed treatments against Aspergillus species pod colonization and aflatoxin accumulation under field conditions. The inhibitory efficacy of Trichoderma species as biocontrol agents was also assessed. A total of 20 treatment combinations including pre-planting applications of FYM at 0, 2.5, 5, and 7.5 tons/ha and seed treatments with carbendazim at 2 g/kg and mancozeb at 3 g kg-1, and Trichoderma harzianum and Trichoderma viride each at 5 g/kg as well as untreated seed as control were used. Treatments were laid out in a randomized complete block design (RCBD) in three replications. The experiment was conducted in two consecutive seasons (2014 and 2015) at Babile Haramaya University sub-Research Station. The highest pod and seed yields (1901.5 and 1281.5 kg/ha, respectively) were recovered from plots treated with T. harzianum at 5 g/kg seed. A. flavus was abundantly recorded in control plots, which could be responsible for the high aflatoxin B1 (5704.4 µg/kg) and B2 (2219.0 µg/kg) contamination. However, plots treated with T. harzianum at 5 g/kg seed and FYM at 5 tons/ha + T. harzianum at 5 g/kg were free from aflatoxin. Integrations of T. harzianum as biocontrol seed treatment and soil amendment with FYM were effective in the pre-harvest management of Aspergillus spp. and aflatoxins contamination.
| Item Type: | Article |
|---|---|
| Divisions: | Research Program : East & Southern Africa |
| CRP: | CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC) |
| Uncontrolled Keywords: | Aflatoxin, Aspergillus, Carbendazim, Farm yard manure, Groundnut, Mancozeb, Trichoderma species, Aspergillus species, Aflatoxin production, Fungicides, Trichoderma species |
| Subjects: | Mandate crops > Groundnut Others > Aflatoxins |
| Depositing User: | Mr Ramesh K |
| Date Deposited: | 15 Oct 2018 09:44 |
| Last Modified: | 22 Oct 2018 03:37 |
| URI: | http://oar.icrisat.org/id/eprint/10894 |
| Official URL: | https://doi.org/10.5897/AJPS2018.1688 |
| Projects: | UNSPECIFIED |
| Funders: | USAID-FtF and Peanut and Mycotoxin Innovation Laboratory at the University of Georgia, USA |
| Acknowledgement: | The authors gratefully thank USAID-FtF and Peanut and Mycotoxin Innovation Laboratory at the University of Georgia, USA, under the terms of award No. AID-ECG-A- 00-07-0001 and USD-ARS- National Peanut Research Laboratory for offering their laboratory. They also acknowledge Mr. Solomon Debele for his excellent assistance during the field experiment and Haramaya University Plant Protection Laboratory team members for their unreserved assistance. |
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