Control of peanut root and pod rots diseases using certain bioagents
AbstractTo evaluate the potential of certain bacterial and fungal bioagents against Macrophomina phasolina, Rhizoctonia solani and Fusarium oxysporum which causing peanut root and pod rots diseases. Thirty three fungal isolates obtained from infected plants showing typical symptoms of peanut root and pod rot, collected from different localities in Assiut, Sohag and Minia governorates, Egypt were identified as R. solani, M. phaseolina, F. solani, Aspergillus niger, A. flavus, F. moniliforme, F. equesti and F. semitectum. Pathogenicity tests showed that M. phaseolina No. 4 recorded was the most pathogenic as incited root-rot and pod rot on the tested peanut cultivars NC followed by R. solani No. 6 and F. solani No. 7. Under laboratory conditions, twelve isolates of bacterial bioagents i.e Bacillus subtilis (BS1 and BS2), Bacillus megaterium (BM1 and BM2), Penibacillus polymyxa BP, Pseudomonas fluorescens (PF1 and PF2) and Azotobacter spp. (AZ1, AZ2, AZ3, AZ4 and AZ5), as well as, six isolates of Trichoderma spp. (T5, T7, T8, T9, T10 and T34) were tested to study their effects against the mycelial growth of the causal pathogens isolates i.e. M. phaseolina No. 4, R. solani No. 6 and F. solani No. 7. In vitro, our results showed that seven bacterial isolates (B. subtilis BS1, B. megaterium BM2, B. polymyxa BP, P. fluorescense (PF1 and PF2), Azotobacter spp. (AZ2 and AZ5)) and three isolates of Trichoderma spp. (T7, T10 and T34) gave the highest significant antagonistic effects against the test pathogens. The ten bioagents isolates which exhibited the best inhibition to the pathogenic fungi in vitro were tested in vivo during 2019 and 2020 growing seasons and the results revealed that Trichoderma spp. T34, B. subtilis BS1, P. polymyxa BP, Azotobacter spp. AZ2, B. megaterium BM2 and Trichoderma spp. T10, which tested against M. phaseolina, R. solani and F. solani, gave the highest reduction of both peanut root and pod rots diseases.
How to Cite
Abd-Elmagid, W., El-Sheikh Aly, M., & El-Sharkawy, R. (2020). Control of peanut root and pod rots diseases using certain bioagents. Journal of Phytopathology and Pest Management, 7(1), 79-90. Retrieved from http://ppmj.net/index.php/ppmj/article/view/201
Authors who publish with Journal of Phytopathology and Pest Management agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under the Creative Commons Attribution-Non Commercial License (CC BY-NC). This allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Archives of Agricultural Sciences Journal is an Open Access Journal, and articles published are distributed under the terms of the Creative Commons Attribution-Non Commercial License (CC BY-NC). Readers may copy, distribute, and display the work for non commercial purposes with the proper citation of the original work. However, the journal retains the right to exploit subsidiary rights on behalf of the authors.
- Authors are able to enter into separate, additional contractural arrangements for the non-exclusive distribution of the journal's published version of the work (e.g. post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process with full disclosure to the journal, as it can lead to productive exchanges, as well as earlier and greater citation of published work. Following publication in Archives of Agricultural Sciences Journal, the author should update the repository, and include a citation and link to the published work.
Click here for more information on Licensing policy